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BOSCH MOTRONIC ECU
Posted by: quattron8-JC (2339) on 2011-11-29 08:37:35 In Reply to: Frequently Asked Questions (FAQ), Procedures and Resources... posted by EDIGREG on 2009-10-10 12:50:56	Share \| Report

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Frequently Asked Questions (FAQ), Procedures and Resources... - EDIGREG 2009-10-10 12:50:56 (220133 views) (Sticky)
- FULL OF FAIL - ThetaTau87 2011-05-30 18:40:10 (71442 views)
- BOSCH MOTRONIC ECU - quattron8-JC 2011-11-29 08:37:35 (84474 views)
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    - MTM Stage 1+ - quattron8-JC 2011-11-29 09:48:47 (87678 views)
      - Additional MTM chip info with info about Hoppen Motorsports involvement - UrS4boy 2012-03-19 08:19:07 (79202 views)
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- VEMS - EDIGREG 2011-09-15 04:18:52 (82003 views)
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  - Setting up N80 provision in VEMS - UrSobsessed 2012-04-28 09:53:13 (82834 views)
  - Tuning VEMS idle/cranking settings: - EDIGREG 2011-09-15 04:22:30 (83445 views)
  - VEMS Fuel Tuning Guide - EDIGREG 2011-09-15 04:20:21 (82475 views)
  - VEMS installation instructions: - EDIGREG 2011-09-15 04:19:23 (83874 views)
- UrS Chassis Map: - EDIGREG 2011-02-01 04:30:38 (88737 views)
  - Updated link - SpeedTek 2015-11-30 12:47:37 (35065 views)
- UrS Engine Bay Device Map: - EDIGREG 2011-02-01 04:30:12 (88437 views)
  - Updated link - SpeedTek 2015-11-30 12:46:49 (35238 views)
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    - Bob Myers ECU opening procedure (as a pdf) - UrS4boy 2011-02-05 03:07:37 (85075 views)
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    - vag com codes - loadtoad24 2019-01-13 18:14:21 (13123 views)
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  - Ross-Tech Fault Codes Database: - EDIGREG 2009-10-11 14:24:18 (90895 views)
  - 20vt ECU Fault Codes and Symptoms: - EDIGREG 2009-10-11 03:20:03 (99595 views)
- WHEELS / TIRES - EDIGREG 2009-10-10 12:58:57 (90149 views)
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- TOOLS - EDIGREG 2009-10-10 12:57:42 (89385 views)
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- TECHNICAL REFERENCE - EDIGREG 2009-10-10 12:57:24 (89897 views)
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- SUSPENSION - EDIGREG 2009-10-10 12:56:53 (90239 views)
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      - Audi Urs4 lower control arm replacement - 12v.org (mirror) - k2exoman 2019-04-16 16:15:17 (12387 views)
        
        Thank you! - Jehannum 2019-04-16 19:44:46 (11840 views)
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  - Front suspension torque specs - Brdman* 2011-01-23 02:07:30 (91321 views)
    - Complete Front Suspension Torque Specs and Part Numbers - UrS4boy 2012-03-01 01:43:15 (82030 views)
  - Bilstein part numbers: - EDIGREG 2010-09-23 02:29:48 (88685 views)
  - Suspension Rebuild - quattro20v 2010-02-21 15:05:07 (108515 views)
  - Rear Subframe Parts Diagram and Torque Specs: - EDIGREG 2009-10-10 14:53:27 (98183 views)
    - Suspension torque spec values - blackghost 2014-08-04 12:29:02 (53078 views)
- STEERING - EDIGREG 2009-10-10 12:56:42 (89390 views)
  - How the Power Steering System Works - AustinEngy 2021-07-03 14:58:04 (5028 views)
  - Steering Rack Replacement - cosmo 2015-01-03 06:47:41 (46902 views)
    - Notes regarding steering rack lines with different banjo bolts - k2exoman 2016-11-14 04:51:40 (28094 views)
  - Servotronic Power Steering Rack, Connector, and bracket replacement info - ThetaTau87 2013-03-20 09:27:34 (69247 views)
  - Power Steering and Brake Pump R&R DIY by Boxflares (Steve M) - ThetaTau87 2013-03-20 08:49:43 (69238 views)
  - UrS-car Servotronic Control Module PNs and Locations info. - ThetaTau87 2013-03-20 08:47:37 (68203 views)
  - Steering Wheel Swap info - ThetaTau87 2013-03-20 08:35:36 (69047 views)
  - Drag Link Socket for "X-Plug" Info - GreenMachine 2011-07-05 19:21:49 (82809 views)
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    - The substitute O-ring part number and source for the NLA X-plug. - KBATTPO 2019-01-13 20:33:39 (13157 views)
  - PS hydraulic system flush: - EDIGREG 2010-05-10 11:57:22 (90620 views)
  - PS pump R & R (with input from BilltheCat) - boxflares 2010-05-09 00:03:48 (95766 views)
  - Steering Rack R&R - sbitch 2009-12-31 03:40:00 (90409 views)
    - UrS6 Steering Rack R & R - sbitch 2010-06-01 08:55:12 (90118 views)
  - Steering Rack Preload Adjustment: - EDIGREG 2009-10-11 12:28:28 (91184 views)
  - Steering Damper R&R: - EDIGREG 2009-10-10 15:23:04 (90451 views)
- PART NUMBERS / SOURCES - EDIGREG 2009-10-10 12:56:32 (90413 views)
  - Some VAG Audi PNs to Bosch PNs cross-overs - UrS4boy 2011-02-05 03:13:31 (84715 views)
  - TUNERS / AFTERMARKET PARTS: - EDIGREG 2009-10-10 13:12:30 (89805 views)
    - Iroz Motorsport - EDIGREG 2013-11-07 04:58:22 (61516 views)
    - Avalon Motorsports in Denver, CO - scarman 2010-02-15 01:56:58 (90459 views)
    - EFI Express - EDIGREG 2009-10-10 14:58:42 (90710 views)
    - MRC (Mihnea) / Chips-ur-s - EDIGREG 2009-10-10 14:26:51 (90728 views)
    - Intended Acceleration (IA) - EDIGREG 2009-10-10 14:26:07 (90220 views)
    - ECS Tuning - EDIGREG 2009-10-10 14:25:29 (90078 views)
    - Hoppen Motorsports (MTM) - EDIGREG 2009-10-10 14:24:58 (90425 views)
    - Apikol - EDIGREG 2009-10-10 13:17:52 (90332 views)
    - 034 Motorsport - EDIGREG 2009-10-10 13:16:21 (89982 views)
  - ONLINE PARTS SOURCES (OE): - EDIGREG 2009-10-10 13:11:59 (89831 views)
    - IABED INDUSTRIES - scarman 2020-10-28 16:30:26 (6665 views)
    - EMI Parts - stuffinder 2016-05-21 05:42:25 (30267 views)
    - FCP EURO Genuine and OEM European parts - MarvelousS4 2015-07-09 16:19:17 (39346 views)
    - DCH Millburn Audi online - NJ - Contact Carson Heter for forum discount - Quattro_JC 2013-11-03 05:45:07 (61390 views)
      - Carson is no longer affiliated with this dealership, but the discount program he set up is still - scarman 2015-10-02 14:02:15 (35640 views)
        
        They no longer have the same e-commerce website as before but the latest web addy as of Aug 2017: - mannywdc 2017-09-01 08:02:39 (20359 views)
    - Hella online parts search by make and model. - TheCrispyNoodle 2013-06-11 03:58:49 (65925 views)
    - Busdepot - habe Ich gesagt 2013-03-15 08:53:49 (67673 views)
    - Bosch Online Automotive Catalogue - TheCrispyNoodle 2012-07-31 10:07:12 (73402 views)
    - Boge - Sachs - Lemforder Online Cat - TheCrispyNoodle 2012-02-23 17:17:50 (77374 views)
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      - CLOSED - scarman 2015-10-01 17:02:50 (35538 views)
    - All European Auto Supply, Royal Oak, MI - speedydtp247 2011-09-04 13:16:30 (80274 views)
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    - Dave Kase brake accumulator recharge/exchange - scarman 2010-02-15 01:15:40 (90035 views)
    - Audi/VW Special Tools Program - scarman 2010-02-15 01:09:29 (87389 views)
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    - Suncoast Automotive, Sarasota, FL - scarman 2010-02-15 00:44:15 (89100 views)
    - Meadowlands Audi, North Bergen, NJ - scarman 2010-02-15 00:39:25 (89808 views)
      - Audi Meadowlands is a Benzel-Busch dealership in N NJ. They recently changed their discount parts - scarman 2020-08-15 17:44:32 (6758 views)
    - Rector Audi Burlingame, CA - scarman 2010-02-15 00:31:58 (89307 views)
    - Frugal Mechanic - EDIGREG 2009-10-10 14:49:54 (89583 views)
    - For Canadians, especially Western Canada, VM Auto Haus - UrS4boy 2009-10-10 14:43:38 (89665 views)
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      - Name changed to San Diego Audi. Same online parts dept run by Ingrid and Bill. - scarman 2014-03-30 07:48:22 (55709 views)
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- INTERIOR / INSTRUMENTATION - EDIGREG 2009-10-10 12:55:50 (90084 views)
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  - C4 Dash Trim Removal DIY - UrS4boy 2015-02-18 05:53:27 (43988 views)
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    - The link in this post needs to be fixed. Looks like it directs to an 'edit' link. - Dave Doolittle 2021-11-08 19:21:13 (4016 views)
      - Google recently implemented some changes to their Drive and broke many links. Should be working now. - KBATTPO 2021-11-08 20:09:12 (3958 views)
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  - DIY Carbon Fiber CC Surround: - EDIGREG 2009-10-10 16:09:45 (91602 views)
    - Updated Link - AZierer_S4 2021-12-28 21:44:11 (3700 views)
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    - Opening the ECU Procedure - speedydtp247 2010-12-21 22:40:50 (87491 views)
  - Front Console Removal Instructions: - EDIGREG 2009-10-10 15:14:12 (90567 views)
  - Outside Temp Display Bulb Replacement: - EDIGREG 2009-06-09 17:00:00 (90908 views)
  - Rear Console Removal Instructions: - EDIGREG 2009-10-10 14:40:48 (89860 views)
  - 3-spoke Sport Steering Wheel Conversion Instructions: - EDIGREG 2009-10-10 14:38:45 (92431 views)
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  - Seat Heater Switch Bulb Replacement: - EDIGREG 2009-10-10 13:24:17 (90018 views)
  - Instrument Cluster (IC) Lamp Replacement: - EDIGREG 2009-10-10 13:22:09 (91348 views)
- IGNITION - EDIGREG 2009-10-10 12:55:22 (89242 views)
  - Ignition Key part number 443837220 - habe Ich gesagt 2012-10-26 00:57:03 (71961 views)
  - Ignition Switch Replacement: - EDIGREG 2012-06-04 16:24:51 (76021 views)
    - Part no suffix 'A' = manual and suffix 'B' = automatic - TheCrispyNoodle 2014-09-16 04:40:42 (50540 views)
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  - Link to a pictoral G40 Cam Position Sensor (CPS) replacement procedure - UrS4boy 2009-10-11 12:53:41 (91319 views)
  - 1.8t Coil Pack Conversion: - EDIGREG 2009-10-10 16:06:25 (91712 views)
- GENERAL INFORMATION - EDIGREG 2009-10-10 12:55:03 (89178 views)
  - The monthly reminder post with all its links to things that we shouldn't forget. - UrS4boy 2013-07-19 22:49:10 (66147 views)
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  - Some 20V Turbo Inline 5 Audi Engine History - UrS4boy 2012-09-15 12:43:28 (75200 views)
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  - 1995 U.S. Market S6 Volume Records: - oldsklaudidub 2012-02-27 08:32:40 (78537 views)
  - vagcat.com - Free online Audi/VW parts catalog - UrSobsessed 2011-10-02 05:44:41 (81481 views)
    - Vagcat website is defunct. This 7zap catalog is the best source other than ETKA. - scarman 2017-02-25 05:57:38 (24038 views)
  - RE: Importing RS2/S2s - Mcstiff 2010-11-22 06:30:53 (86139 views)
  - Decoding UrS VINs - UrS4boy 2010-11-06 04:58:27 (86841 views)
  - S-cars.org DIY Link Page. Lots of good info to download and save - UrS4boy 2009-10-13 17:08:06 (91148 views)
  - UrS4/UrS6 Technical Specifications: - EDIGREG 2009-10-10 15:43:37 (91346 views)
  - Buyer's Guide: - EDIGREG 2009-10-10 15:30:10 (90645 views)
- FUEL SYSTEM - EDIGREG 2009-10-10 12:54:50 (89235 views)
  - Alternative to Compression fittings and Nylon Fuel Line. Niccop (Nickel-Copper Fuel Line) - GreenMachine 2021-04-21 21:43:31 (6234 views)
  - Fuel Level sending or Guage or fuel light works intermittently. Repair inside. - urs6Josh 2020-09-08 10:36:36 (6566 views)
  - Mance's VAP Fuel Line DIY Replacement Procedure - 1995S6er4life 2015-03-06 06:16:53 (43242 views)
    - UPDATED LINK -January 16, 2017 - UrS4boy 2017-01-16 06:30:50 (25012 views)
  - DIY instructions for adding a battery-to-fuel pump relay - ThetaTau87 2013-03-20 09:12:48 (68707 views)
  - Fuel Line PN and preventative maintenance info - ThetaTau87 2013-03-20 09:09:04 (68314 views)
  - FredM's Fuel Line Maintenance DIY - UrS4boy 2012-07-10 04:18:45 (74302 views)
    - Alternative to Compression fittings and Nylon Fuel Line. Niccop (Nickel-Copper Fuel Line) - GreenMachine 2021-04-21 21:36:11 (3885 views)
  - Power to the Injectors - S72 Thermal Breaker (Circuit Breaker) - Emerald-UrS4 2011-07-26 00:20:35 (82449 views)
  - Fuel System including Fuel Pressure Regulator Info - EDIGREG 2011-01-31 15:11:59 (86198 views)
    - Source for "A" FPR replacement - GreenMachine 2018-12-27 21:33:17 (13121 views)
  - J17 Fuel Pump Relay Information - EDIGREG 2011-01-31 15:10:11 (86311 views)
  - Fuel Injector Info - EDIGREG 2011-01-31 15:06:13 (85168 views)
    - Stan Weiss's Fuel Injector Table - UrS4boy 2012-05-13 06:22:40 (75688 views)
  - Fuel Filter Info - EDIGREG 2011-01-31 15:05:51 (85292 views)
  - G6 Fuel Pump Info - EDIGREG 2011-01-31 15:05:29 (85003 views)
  - Bosch "044" pump DIY install - UrSobsessed 2009-11-20 13:35:51 (109244 views)
  - Fuel Pump Testing Procedure: - EDIGREG 2009-10-10 15:03:20 (90174 views)
  - Fuel Pump Replacement: - EDIGREG 2009-10-10 13:26:35 (91940 views)
    - Updated version. - UrS4boy 2017-01-29 13:51:28 (24933 views)
- EXHAUST - EDIGREG 2009-10-10 12:54:32 (89117 views)
  - Stromung Alternative Downpipe Gasket (Seals 10x better than Vibrant) - GreenMachine 2022-06-01 12:51:18 (2791 views)
  - All the components of the C4 UrS exhaust system, head to tailpipe - UrS4boy 2012-09-15 12:45:01 (74025 views)
  - One solution to eliminate the drone present with many custom exhaust systems - MatLax 2012-09-15 09:51:00 (74228 views)
  - The history of Stromung exhaust for the C4 chassis S car - es-car-go 2010-05-22 13:28:53 (91703 views)
  - This note covers installation of Stromung Gen 5 - es-car-go 2010-05-22 13:20:39 (89617 views)
- ENGINE - EDIGREG 2009-10-10 12:54:20 (89638 views)
  - Analogue Boost Gauge 101 - options, locations and installation suggestions - UrS4boy 2017-09-03 22:17:04 (20820 views)
  - Swapping plastic to metal crossover pipes. Be sure to grab these two brackets for the install: - GreenMachine 2017-06-23 14:49:48 (21683 views)
  - Testing for Boost Leaks - Cash68 2017-01-06 07:10:14 (25638 views)
  - Engine Harness Pdf - Passenger compartment with link to engine compartment info - UrS4boy 2016-06-01 11:33:23 (30063 views)
  - Coolant Flush Procedure - jstoker 2015-10-15 07:30:45 (36917 views)
  - Intake Manifold Removal - GreenMachine 2015-07-31 14:14:25 (38486 views)
  - AAN Oil Pressure Sender, Switches, Wiring and Check Valves (with UPDATES) - skiguy 2015-03-27 11:07:56 (43028 views)
  - Motor and Transmission Mount Replacement - AudiCoupeGT 2014-12-10 16:41:43 (49205 views)
  - G69 / F60 Throttle valve position potentiometer /idle switch repair - KBATTPO 2014-08-15 04:08:21 (52174 views)
  - Victor Reinz engine gasket and seal part numbers for Audi 2.2T (also includes head bolt kit PN) - ThetaTau87 2014-02-11 19:00:28 (57848 views)
  - 034 Garrett turbo coolant line kit modifications - ThetaTau87 2014-02-04 16:15:46 (57912 views)
  - Bosch Starter Rebuilding - GreenMachine 2013-12-31 13:20:27 (59101 views)
  - Adapter PNs to install an oil pressure gauge - ThetaTau87 2013-11-05 15:00:00 (64947 views)
  - Turbo Coolant and Oil Feed and Return Lines - UrS4boy 2013-06-24 10:51:06 (66003 views)
  - By-pass Valve (BPV) Info (AKA Diverter Valve) - ThetaTau87 2013-03-20 12:35:39 (68370 views)
  - Potential solutions to why your AAN-powered UrS isn't starting - UrS4boy 2012-11-01 05:54:01 (72155 views)
  - Things that will fail on your AAN and strand you on the side of the road - UrS4boy 2012-11-01 05:50:56 (72225 views)
  - K24-7000 OE Turbo and K24-7200 Turbo info including disassemby pdf - UrS4boy 2012-10-27 08:36:41 (73108 views)
  - upgrade to Setrab oil cooler - urs6ville 2012-08-02 07:05:17 (74625 views)
    - Installing a larger oil cooler in the stock location. - ThetaTau87 2014-03-07 06:38:20 (57299 views)
    - Aeroquip Socketless hose and ends in place of braided stailess hose - ThetaTau87 2014-02-11 08:35:21 (57953 views)
    - A couple of links for installation references: - UrSobsessed 2012-08-02 07:16:49 (73184 views)
  - How To: Seal your valve cover gasket, once and for all... - EDIGREG 2012-06-25 08:22:50 (77222 views)
  - C4 AAN starter R&R - boxflares 2012-04-11 14:27:02 (78517 views)
    - Some observations of my own from doing this earlier today, before I forget - TheCrispyNoodle 2018-12-27 14:10:42 (13192 views)
  - AAN Headgasket PNs and changes from paper/metal to metal/metal with Head bolt info link - UrS4boy 2011-08-28 10:30:51 (81592 views)
  - Garrett GT turbo Oil and Water line DIY - quattro.pilot 2011-06-25 10:30:42 (83239 views)
  - 3b head bolt tightening sequence and torque specs - urs6ville 2011-03-16 08:41:42 (84178 views)
  - AAN head bolt tightening sequence and torque specs - urs6ville 2011-03-16 08:41:07 (87189 views)
  - Intake Hose Clamp Specifications for OEM & Samco w/ Breeze CT Part Nums - quattron8 2011-02-05 00:20:29 (84950 views)
  - G71 Manifold Absolute Pressure (MAP) sensor information - EDIGREG 2011-01-31 15:12:56 (85108 views)
  - Firewall Connector Rack Connection Call-out - EDIGREG 2011-01-31 15:12:15 (84576 views)
  - Moisture Trap Info - EDIGREG 2011-01-31 15:11:33 (84874 views)
  - N71 Idle Speed Stabilization Valve (ISV or ISS Valve) Info - EDIGREG 2011-01-31 15:10:28 (85705 views)
  - Crank Position (G4) and Engine Speed Sensor (G28) Info - Function , Location and PNs - EDIGREG 2011-01-31 15:09:48 (86152 views)
  - G61 and G66 Knock Sensor info - EDIGREG 2011-01-31 15:08:48 (84714 views)
    - Servicing G61 & G66 knock sensors - quattron8 2011-05-13 03:34:00 (95274 views)
  - AAN Positive Crankcase Ventilation (PCV) System with revised diagram, PNs and Links - EDIGREG 2011-01-31 15:07:46 (86571 views)
  - Serpentine Belt Info, importance, PNs and R&R procedure - EDIGREG 2011-01-31 15:07:25 (85556 views)
  - G42 Intake Air Temp sensor info - EDIGREG 2011-01-31 15:07:01 (85507 views)
  - G69 / F60 Throttle valve position potentiometer /idle switch information - EDIGREG 2011-01-31 15:06:32 (85092 views)
  - G40 Cam Position Sensor (CPS) info - EDIGREG 2011-01-31 15:04:26 (85825 views)
    - If your CPS plug is falling apart - KBATTPO 2016-05-23 14:03:01 (29829 views)
  - Bypass Valve Info - EDIGREG 2011-01-31 15:04:07 (84928 views)
  - N75 Wastegate Frequency Valve (WGFV) location, function and PN info - EDIGREG 2011-01-31 15:03:10 (86674 views)
  - G70 Mass Air Flow (MAF) sensor info - EDIGREG 2011-01-31 15:02:17 (85240 views)
  - Air Filter Info with PNs including the airbox / MAF cover - EDIGREG 2011-01-31 15:01:02 (84496 views)
  - F96 Altitude/Barometric Pressure Sensor Information - EDIGREG 2011-01-31 15:00:37 (84776 views)
  - G39 Lambda Oxygen Sensor Info and Function with PNs - EDIGREG 2011-01-31 15:00:06 (85009 views)
  - Link to deephouse's Throttle Body Service / install /throttle position switch adjustment DIY - UrS4boy 2010-04-11 07:09:41 (90107 views)
  - Serpentine Belt and Tensioner Info - GreenMachine 2010-03-05 18:06:43 (58880 views)
    - Volvo Serpentine Belt Tensioner Roller with Dust boot. - GreenMachine 2017-12-04 16:32:41 (6037 views)
  - Link to a missing and hesitation diagnostic procedure - UrS4boy 2010-01-20 00:22:30 (90255 views)
  - RS2 MODIFICATIONS: - EDIGREG 2010-01-16 16:43:38 (90414 views)
    - RS2 Manifold Diagram with shortened studs - quattro20v 2016-01-30 10:45:56 (33897 views)
      - Order studs from Marc @ EFIEXPRESS, 034s are too long - Cash68 2019-01-08 21:13:58 (12947 views)
    - RS2 Injector Flow Rates: - EDIGREG 2010-01-16 16:50:37 (92048 views)
    - RS2 Turbo FAQ: - EDIGREG 2010-01-16 16:48:34 (90533 views)
    - RS2 Exhaust Manifold Installation Procedure: - EDIGREG 2010-01-16 16:47:32 (97070 views)
      - Location for the short exhaust studs for RS2 manifold - speedydtp247 2011-12-25 10:18:51 (79283 views)
    - RS2 Part Numbers: - EDIGREG 2010-01-16 16:44:47 (90484 views)
  - Engine Bay Device Map with Links to almost everything the ECU needs for inputs and outputs - UrS4boy 2009-12-28 15:33:27 (90359 views)
  - ANN 20VT (& V8) Motronic Self Study Guide 1992 VAG 143 - sbitch 2009-11-10 03:08:57 (92518 views)
  - ECU Output tests for AAN electrical solenoids: - EDIGREG 2009-10-25 13:08:44 (90275 views)
  - Link to AAN engine manual pdf. - UrS4boy 2009-10-24 04:25:58 (96086 views)
  - ECU pin-out complete with diagram, wire colours and function - UrS4boy 2009-10-11 04:10:47 (90520 views)
    - UrS C4, 200 20VT (3B) and S2/RS2 OBD1 Fault Code access port locations and info - UrS4boy 2012-03-02 02:58:14 (76703 views)
  - Detailed Power Output Stage (POS) info including using the spare channel - UrS4boy 2009-10-11 03:04:29 (120484 views)
    - thanks - greg917 2018-03-15 19:02:31 (17058 views)
    - No power Fuses 28 and 34 - Cristi 2016-04-14 13:23:24 (30707 views)
  - Motronic ECU FAQ: - EDIGREG 2009-10-10 15:38:57 (90253 views)
  - K24/RS2 Turbo FAQ: - EDIGREG 2009-10-05 22:37:14 (92227 views)
  - Timing Belt Replacement Procedure: - EDIGREG 2009-10-10 15:18:16 (92710 views)
  - Motronic ECU Wiring Diagram, Fuses and Sensors: - EDIGREG 2009-10-10 14:48:23 (113874 views)
    - Note: the wiring for the N122 and N127 POS units in the diagram is wrong. The correct wiring is - UrS4boy 2009-10-11 03:08:37 (89890 views)
  - Mass Air Flow (MAF) Sensor (G70) General Information, Cleaning and Testing Procedures: - EDIGREG 2009-10-10 14:44:07 (90071 views)
- EMISSIONS SYSTEM - EDIGREG 2009-10-10 12:53:46 (88794 views)
  - N80 Evaporative Emissions Control Valve and Canister info - EDIGREG 2011-01-31 15:10:49 (85229 views)
  - ANN 20VT (& V8) Motronic Self Study Guide 1992 VAG 143 - sbitch 2009-11-10 03:10:23 (89217 views)
- ELECTRICAL / LIGHTING - EDIGREG 2009-10-10 12:53:22 (89622 views)
  - 150A A8Q Bosch Alternator modification and fitting - TheCrispyNoodle 2021-07-20 01:41:08 (4977 views)
  - Fitting Headlight Relays - TheCrispyNoodle 2019-02-09 13:35:27 (14254 views)
  - Repair the broken plastic bevel gear on the headight adjuster - KBATTPO 2016-01-09 10:34:42 (33187 views)
    - Alternate method utilizing the stock gears with baking soda and super glue. - GreenMachine 2017-12-20 10:19:49 (18623 views)
  - Repair and Maintenance of Window Control Modules including PCBs and mechanical relays - UrS4boy 2015-12-12 10:35:44 (33876 views)
  - Huco 14.6V Voltage Regulator Source for the 110A Bosch Alternator (Urs4 Only) - GreenMachine 2015-05-14 09:04:42 (41913 views)
    - Vemo 14.5V Voltage Regulator Source for the 120A Bosch Alternator (Late '94 Urs4 and Urs6) - GreenMachine 2016-01-23 11:42:05 (35371 views)
  - Urs6 Avant Rear Hatch Wiring Info - GreenMachine 2015-02-17 09:40:36 (43523 views)
  - 113 page pdf C4 UrS4 wiring diagrams - UrS4boy 2013-09-15 11:43:10 (68689 views)
    - 95 s6 avant passager mirror drop/ fog and rear window switches illuminate - Brento50 2019-02-02 10:10:54 (12676 views)
      - Welcome to the forum. This is the FAQ section. It's just a recourse. We reply/post in the main - GreenMachine 2019-02-02 10:35:08 (12635 views)
  - Alternator Troubleshooting/Information - lliejk 2013-06-04 18:04:11 (66267 views)
  - C4 UrS and RS2 Firewall Connector Rack Sensor Connection Call-out with PNs - ThetaTau87 2013-03-20 12:21:54 (67556 views)
  - Battery Information (hold down PNs and comments about height and venting) - ThetaTau87 2017-01-04 22:45:40 (68013 views)
  - C4 UrS Auxiliary Relay, Connector Station and Fuse Panels: their locations and details - ThetaTau87 2013-03-20 08:40:47 (69552 views)
  - Battery Information (hold down PNs and comments about height and venting) - UrS4boy 2011-03-17 05:52:09 (83946 views)
  - 110 Amp and 120 Amp alternator PNs with appropriate Voltage regulator PNs - speedydtp247 2010-11-26 13:02:46 (85882 views)
    - 120A Alternator bearing & regulator service workshop - ImQuattro�� 2011-04-14 12:46:17 (83323 views)
      - 120A late model Voltage Regulator part number interchange - ImQuattro�� 2011-06-02 14:33:02 (83189 views)
  - Voltage Regulator replacement: - EDIGREG 2010-10-31 08:46:31 (86309 views)
  - C4 Starting Circuit Wiring Diagram - ImQuattro�� 2010-10-13 07:12:29 (93158 views)
  - How to remove and reinstall tail light - Fonzinator 2010-05-31 09:32:11 (92444 views)
  - Headlight Leveling Motors - quattro20v 2010-03-25 13:40:08 (94378 views)
  - How to lobotomize the autocheck lamp warning module (Remove HID bulb out warning)... - EDIGREG 2009-11-15 10:36:53 (100877 views)
    - Cluster fix for erroneous bulb out warning. - GreenMachine 2014-01-13 12:43:06 (59014 views)
    - S4 & S6 Lamp Module <-> Autocheck Wiring Diagrams - quattron8-JC 2012-10-15 23:46:12 (104659 views)
    - Alternate Method 2 - Non-destructive relay mod - S6 version - quattron8-JC 2010-09-24 03:15:37 (87932 views)
    - An alternative method, without modifying the relay... - EDIGREG 2009-11-15 10:39:01 (90939 views)
  - One-touch Up Relay Information: - EDIGREG 2009-10-30 14:14:36 (90081 views)
  - Link to a 53 pg C4 A6 wiring diagram pdf (not UrS but lots of common info) - UrS4boy 2009-10-11 15:23:26 (90387 views)
  - Ignition Switch Replacement: - EDIGREG 2009-10-10 15:35:51 (89427 views)
  - Audi TT HID Low-Beam Retrofit: - EDIGREG 2009-10-10 15:16:16 (90816 views)
  - Headlight Cleaning Procedure: - EDIGREG 2009-10-10 14:35:51 (90153 views)
- DRIVETRAIN - EDIGREG 2009-10-10 12:53:00 (89034 views)
  - Rear Differential Lock Info - ThetaTau87 2013-03-20 09:15:58 (68379 views)
  - Driveshaft Info including links to replacement centre bearings, CV joints and DIYs - ThetaTau87 2013-03-20 09:06:34 (68861 views)
  - Transmission, Clutch and Flywheel info - ThetaTau87 2013-03-20 09:04:59 (69502 views)
  - Clutch Slave cylinder R&R info - Action Jackson 2013-02-15 06:42:14 (69504 views)
  - Rear Differential Seal R&R: - EDIGREG 2012-08-14 02:21:00 (74417 views)
    - '92-95 left seal is 017525400A; 95.5+ is 017525400C - john.eding 2018-12-24 15:19:53 (13278 views)
  - Comparison of 5 spd versus 6 spd 01E gears CBD, CBL and CYT - UrS4boy 2012-05-20 09:17:21 (75999 views)
  - 01E EDU 6-Speed Rebuild Parts List - islingtonaudi 2012-03-26 04:55:21 (77689 views)
  - UrS4 master cylinder replacement - sbitch 2012-02-08 10:55:44 (77576 views)
  - Manual Transmission, Front/Center Differential and Rear Differential Fluid Changing Procedure - UrSobsessed 2010-12-02 13:24:32 (92822 views)
  - Transmission shift linkage adjustment - UrS4boy 2010-11-06 06:11:15 (87090 views)
  - Clutch master cylinder replacement - quattro20v 2010-06-08 06:14:28 (88900 views)
    - Master Cylinder Replacement (Fred Munro) - GreenMachine 2015-07-20 09:52:51 (38264 views)
  - Rear axle replacment DIY. - turbos4audi 2010-02-09 03:45:15 (90581 views)
  - Clutch Replacement procedure: - EDIGREG 2009-12-30 08:34:09 (91193 views)
  - 5 & 6-speed 01E Transmission Identification, Ratios, and General Information: - EDIGREG 2009-11-12 13:46:40 (92510 views)
  - Driveshaft R&R: - EDIGREG 2009-10-10 15:42:10 (90148 views)
- CLIMATE CONTROL - EDIGREG 2009-10-10 12:52:49 (90235 views)
  - Servicing the AC on a 1995.5 S6 - Audicted (refugee) 2022-07-31 13:04:02 (2541 views)
  - Interchangeability of CC head Unit with other models - Audicted (refugee) 2022-04-08 18:11:11 (3291 views)
  - Climate Control: replacing incandescent bulbs with LEDs - KBATTPO 2015-12-18 17:19:36 (33628 views)
  - Changing the Temp Display from F to C, etc. - GreenMachine 2015-01-26 18:53:21 (44566 views)
  - A/C Condensers R-12 VS R-134a - MarvelousS4 2013-07-05 22:44:18 (65755 views)
  - A/C service port addition for R-12 system. - MarvelousS4 2013-07-05 16:27:53 (65732 views)
  - A/C Climate Control Pollen Filter Info - UrS4boy 2012-06-01 03:40:51 (75282 views)
  - Climate control button repair - ThetaTau87 2010-08-11 09:24:25 (87441 views)
  - Climate Control Wiring Diagram 2 of 2 (sorry only lo res but in color!) - ImQuattro�� 2010-05-03 13:14:20 (99725 views)
  - Climate Control Wiring Diagram 1 of 2 (sorry only lo res but in color!) - ImQuattro�� 2010-05-03 13:12:48 (107485 views)
  - Climate Control Plug Identification - ImQuattro�� 2010-05-03 13:11:20 (90017 views)
  - Climate Control Component Location - ImQuattro�� 2010-05-03 13:10:24 (92358 views)
  - Climate Control Fan Control Unit Location - ImQuattro�� 2010-05-03 13:08:48 (90040 views)
  - Climate Control Diagnostic Channel 52 Legend - ImQuattro�� 2010-05-03 13:05:46 (92462 views)
  - Climate Contol Codes & Channel Diagnostics - ImQuattro�� 2010-05-03 02:47:49 (90805 views)
  - How to enable the recirculation button to work independently... - EDIGREG 2010-01-16 16:43:06 (91088 views)
    - Additional info on climate control headunit coding. - Brdman* 2012-11-11 04:15:35 (71922 views)
  - HVAC LCD/CONTROL R&R (sticky button syndrome) - sbitch 2009-11-10 02:55:30 (90567 views)
  - Improved Heater Core DIY pdf with photos and more hints - UrS4boy 2009-10-20 13:50:07 (91230 views)
    - A few hints and details to add to the most excellent Rev. 1 document - tigerwillow1 2021-08-30 19:45:38 (4452 views)
    - A comparison of Meyle and Behr heater cores. - KBATTPO 2020-08-13 02:23:00 (6948 views)
    - The original "2.5 hr" heater core procedure (by kinderutz) - UrS4boy 2011-09-08 12:02:03 (80876 views)
  - Temperature Flap Servo R&R - UrS4boy 2009-10-18 13:16:26 (90486 views)
    - Link to working HVAC servo repair DIY (quattro8's below doesn't work anymore) - UrS4boy 2017-09-01 11:34:48 (20702 views)
    - Climate servo rehab/cleaning procedure - quattro8 2010-10-04 10:27:46 (87124 views)
  - HVAC Blower Motor R&R: - EDIGREG 2009-10-14 09:09:09 (91456 views)
- COOLING SYSTEM - EDIGREG 2009-10-10 12:52:32 (89875 views)
  - Metal Thermostat Upgrade Part # - Cash68 2015-03-02 06:13:39 (43387 views)
    - Sources for the metal T fitting and block coolant flange. - GreenMachine 2018-09-09 13:00:19 (14828 views)
  - C4 AAN Cooling and Heating System (with hyperlinks to more info) - Cash68 2015-02-12 11:53:25 (44985 views)
  - Climate control coolant Tee PN with Coolant Temp Sender, O-ring and clip PNs and more - Cash68 2015-02-12 10:06:45 (43801 views)
  - Aux Fan part # - WVUrS6 2013-05-29 10:52:30 (66311 views)
  - F76 Multifunction Temperature Switch R&R Info - ThetaTau87 2013-03-20 12:29:06 (68557 views)
  - Coolant Expansion Tank/Reservoir Info - ThetaTau87 2013-03-20 08:54:41 (68074 views)
  - Viscous Clutch Fan Info (mostly bearing info) - ThetaTau87 2014-12-26 15:01:51 (68295 views)
  - Coolant comparison of G12 vs Dexcool vs "Green stuff" - Cash68 2011-07-18 09:28:48 (82415 views)
  - G62 Coolant Temp sensor Info - EDIGREG 2011-01-31 15:12:36 (85881 views)
  - After-run Auxiliary Coolant Pump and Switch Info - EDIGREG 2011-01-31 15:09:29 (86292 views)
  - Coolant Reservoir, Radiator and Coolant PNs - EDIGREG 2011-01-31 15:09:11 (85265 views)
  - Multifunction Temperature Switch R&R Info (with Cross Links to G62 Coolant Temp Sensor) - EDIGREG 2011-01-31 15:08:28 (85008 views)
  - Thermostat Diagnostic and Replacement Procedures - EDIGREG 2011-01-31 15:08:06 (85276 views)
  - Cooling system hose, sensor and hardware info. - UrSobsessed 2009-11-15 15:52:21 (93137 views)
  - After-run pump R&R: - EDIGREG 2009-10-20 08:43:27 (89718 views)
- BRAKES - EDIGREG 2009-10-10 12:52:21 (89515 views)
  - SJM Brake Troubleshooting - ABS, Accumulator aka Bomb - audipete 2024-03-21 14:42:51 (70 views)
  - Brake light Switch part No 1995.5 S6...uses a 4 pin switch 4A0945515A...early models 2 pin 443945515 - Audicted (refugee) 2022-05-24 15:20:12 (2975 views)
  - D2 S8 rear caliper 'upgrade' - urs6Josh 2020-12-16 09:39:58 (6408 views)
  - Rob Edward's (Rennlist) Brembo Caliper rebuild DIY - UrS4boy 2016-08-25 07:15:03 (27775 views)
  - Replacing the brake pressure accumulator aka the bomb - quattro20v 2016-07-13 19:40:03 (29651 views)
  - DIY Power Bleeder On The Cheap... - islingtonaudi 2013-07-19 22:45:21 (66106 views)
  - E-brake cable adjustment and PN info - ThetaTau87 2013-03-20 09:07:52 (68356 views)
  - How our C4 UrS Power Brake System Works - ThetaTau87 2013-03-20 08:46:07 (68763 views)
  - Rear calipers rebuilding (from P.D.Q. on Audiworld) - MatLax 2011-06-29 03:06:44 (88134 views)
  - C4 UrS4/S6 Front Brake Options - GreenMachine 2011-05-30 13:18:14 (86529 views)
  - DIY: Vacuum brake booster conversion - MatLax 2010-11-17 13:04:39 (89337 views)
    - A List of Parts Required for Converison - pltfn 2015-12-07 03:28:32 (34167 views)
      - Add 1 more seal for master cylinder to vacuum booster - running_cold924 2017-10-05 12:32:38 (19886 views)
  - Part No.'s for the 993tt or 928GTS Brembo Big Brake Upgrade with RS2 brackets - UrS4boy 2010-11-07 03:48:01 (88153 views)
  - ABS Defeat Switch Modification (for non '92 S-cars) - GreenMachine 2010-01-23 19:08:05 (90002 views)
  - Brake Servo Replacement procedure: - EDIGREG 2009-12-30 08:28:37 (89965 views)
  - One Rear Brake Caliper R & R procedure (updated Dec. 2/13) - UrS4boy 2009-10-25 02:40:21 (99242 views)
  - Repairing Seized Rear Caliper Guide Pins: - EDIGREG 2009-10-10 15:25:06 (90380 views)
    - archived. - ejg3855 2015-11-18 11:17:22 (34320 views)
- BODY - EDIGREG 2009-10-10 12:52:11 (88892 views)
  - Outside Mirror Glass Heating Diagnosis - GreenMachine 2019-11-22 19:40:44 (10340 views)
  - Replacing the gas spring in the elbow rest - KBATTPO 2017-03-14 16:36:42 (23367 views)
  - Modifying the avant hatch handle to allow the installation for the euro center tail - speedydtp247 2015-12-03 17:07:45 (34256 views)
  - Replacing Driver's Side Door Glass Removal and Replacement DIY pdf - UrS4boy 2015-04-19 22:46:37 (41092 views)
  - Trunk lock actuator vacuum leak repair procedure - KBATTPO 2014-08-01 10:11:51 (52532 views)
    - OEM VW/Audi Repair Boots ($5.99) - GreenMachine 2018-04-26 12:48:32 (16846 views)
  - Mirror glass replacement - c4S6 2013-10-08 21:08:12 (62180 views)
  - Replacing the oval Audi emblem on the front fender - ThetaTau87 2013-03-20 09:03:32 (68008 views)
  - Hood Release: How it works, why it fails and how to fix it. - ThetaTau87 2013-03-20 08:44:59 (68169 views)
  - Front Door Lock and Window info - ThetaTau87 2013-03-20 08:32:52 (68357 views)
  - Front door window R&R - MarvelousS4 2012-06-23 16:10:07 (74563 views)
  - C4 Bumper differences 100/S4 and A6/S6, Euro and NAmerica - UrS4boy 2012-05-03 18:12:16 (76221 views)
  - C4 UrS-car Cowl Drain Issues and their solutions - UrS4boy 2011-11-20 03:07:33 (79217 views)
    - Water in footwell from failed A pillar/windshield cowl seam sealer - audipete 2023-07-10 17:31:41 (751 views)
  - Adjusting the trunk lid - EDIGREG 2011-05-08 12:46:37 (83670 views)
  - Frankenmirror mod (swapping the late C4 mirror from "Nemo" to full size) - boxflares 2010-10-26 05:55:55 (94596 views)
    - Some notes along with pictures from the creator of the original Frankenmirror mod - KBATTPO 2016-01-28 09:15:12 (32454 views)
  - USA C4 Paint / Color Codes by Model Year - boxflares 2010-06-07 21:48:37 (88459 views)
    - All the C4 Paint Codes (including the UrS) with the interior codes (for Build Tag Decoding) - UrS4boy 2017-02-01 15:35:56 (24605 views)
    - 1995.5 MY (07-01-95 to 12-31-95) - boxflares 2010-06-07 22:20:30 (88952 views)
    - 1995 MY (07-01-1994 to 07-31-1995) - boxflares 2010-06-07 22:15:24 (88482 views)
    - 1994 MY (07-01-1993 to 07-31-1994) - boxflares 2010-06-07 22:05:01 (88303 views)
    - 1993 MY (07-01-1992 to 07-31-1993) - boxflares 2010-06-24 02:39:48 (88119 views)
    - 1992 MY (01-1-1992 to 07-31-1992) - boxflares 2010-06-07 21:56:02 (87826 views)
  - Towing Capacity - boxflares 2010-04-12 01:10:25 (89712 views)
  - Sunroof Drain - yaminator 2010-01-20 20:42:29 (90779 views)
  - Trunk lock rehab or swap. - turbos4audi 2009-12-31 12:33:05 (89750 views)
    - Late model C4 avant rear hatch lock cylinder R+R - shmcquilkin 2014-08-10 14:50:39 (51986 views)
  - Location of front and rear UrS badges - UrS4boy 2009-11-10 00:40:56 (94278 views)
    - New UrS badges - speedydtp247 2010-08-09 16:57:33 (87653 views)
      - Another source for UrS badges - speedydtp247 2015-06-08 20:00:00 (83415 views)
  - Vented Wheel Well Liner Modification (Frankenliner): - EDIGREG 2009-10-10 15:22:03 (89941 views)
    - Updated link, the s-cars one is dead. - AustinEngy 2021-11-29 00:06:29 (3946 views)
- AUDIO / ELECTRONICS - EDIGREG 2009-10-10 12:51:55 (89640 views)
  - Coding a Concert Radio for Bose - GreenMachine 2017-07-26 18:44:44 (21373 views)
  - C4 Sedan ('94) and Urs6 Avant Antenna Mast Information - GreenMachine 2015-05-08 15:10:48 (44884 views)
    - Update on Avant Antenna - nick.cfrancis 2023-10-08 18:07:34 (512 views)
  - 5.25" front speaker bracket template - PLANETARY4 2013-02-25 12:54:56 (68718 views)
  - Gamma CC and Delta CC info including reset info and GALA for the Delta - UrS4boy 2012-09-09 05:50:19 (73333 views)
  - C4 Radio Cage Differences and why - UrS4boy 2012-05-20 06:54:00 (75414 views)
  - Jimmy Pribble's Bosectomy - GreenMachine 2011-07-17 00:23:44 (82925 views)
  - Avant Radio antenna / reception improvements - quattro8 2010-10-04 08:22:10 (91692 views)
  - Gamma Radio Pinout Diagram: - EDIGREG 2009-10-10 14:33:39 (100150 views)
  - Installing an Auxiliary Stereo Input: - EDIGREG 2009-10-10 13:10:18 (91161 views)
  - Summary of Audi Radios (Which Radio Do I Have?) - EDIGREG 2009-10-10 13:08:35 (91003 views)
  - Phatnoise Adapter Install: - EDIGREG 2009-10-10 13:07:56 (90079 views)
  - Concert Head Unit Install: - EDIGREG 2009-10-10 13:07:19 (90600 views)
    - ^^^This method is now obsolete. A plug and play relay swap allows a simple, clean install. - GreenMachine 2016-06-27 19:22:23 (29523 views)
    - Just a note: CD Changer won't work if Installing a Concert in place of any Delta/Gamma - ImQuattro�� 2010-10-13 07:27:14 (86099 views)
- ALARM SYSTEM - EDIGREG 2009-10-10 12:51:44 (90013 views)
  - '95.5 Urs6 Defa Remotes Ordering Info - GreenMachine 2018-03-13 10:55:18 (17402 views)
    - Defa/Audi Antenna Box - GreenMachine 2019-08-29 15:38:33 (10723 views)
  - Central Locking Actuator Rubber Boot Replacement with Alternative Bosch part - TheCrispyNoodle 2016-04-09 06:04:32 (33270 views)
    - OEM VW/Audi Repair Boots ($5.99) - GreenMachine 2018-04-28 14:14:05 (16679 views)
      - As of 23 Aug, 2018 these are no longer available from T3 Technique. - markiteight 2018-08-23 22:53:01 (14964 views)
  - Additional info on R&R of the central locking pump - TheCrispyNoodle 2016-04-03 10:58:55 (31334 views)
  - Rundown of the 3 different C4 Alarm/Central Locking Systems (Pumps, Keys, and Remotes) - GreenMachine 2015-02-13 09:53:39 (56333 views)
  - C4 100/UrS4 Infrared Remote Key - Batteries and Reprogramming - UrS4boy 2012-08-13 04:10:53 (87854 views)
  - RF Remote Programming FAQ - iduff 2011-10-01 02:07:55 (81796 views)
  - 95.5 S6 HAA Key & Remote Replacement Guidelines - quattro8 2010-10-04 08:00:36 (88906 views)
    - I successeflully reprogrammed the wife's old 1998 A4 1.8T key to work with my 1997 S6 and vise versa - KBATTPO 2014-12-26 12:08:59 (46148 views)
  - RightClick Installation Part #'s Wiring colors, Lighting, and trunk release info pictures - ImQuattro�� 2010-02-17 10:56:34 (111074 views)
    - New RightClick link inside - speedydtp247 2023-10-22 21:44:57 (537 views)
    - HU49 is the key blank you need for the 92-95 UrS4/6. HU66 is the one you need for 95.5-97 UrS6 - speedydtp247 2010-08-08 14:53:44 (87992 views)
  - Right Click RF Keyless Entry System KE60W installation - sbitch 2009-11-08 00:09:06 (91114 views)
- AIRBAG / SAFETY FEATURES - EDIGREG 2009-10-10 12:51:17 (89838 views)
  - ProCon-Ten passive restraint activation system info - ThetaTau87 2013-03-20 08:43:25 (67742 views)
  - Airbag Control Modules and Diagnostic Connectors: - EDIGREG 2009-10-11 12:27:59 (90241 views)

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