A6 Quattro Sedan V6-3.2L (BKH) (2005)
Ignition Switch Lock Cylinder: Customer Interest
Starting System - Ign Switch Won't Turn/Key Stuck In Sw.
28 Ignition switch cannot be turned on; key may stick in ignition; engine will not start
96 10 07
2012483/6
June 11, 2010
Supersedes Technical Service Bulletin Group 96 number 09-07 dated May 6, 2009 for reasons listed below.
Affected Vehicles
Condition
^ Engine will not start.
^ Ignition cannot be turned on.
^ In some cases, the ignition key cannot be removed from the ignition switch after attempting to start the engine.
Technical Background
No communication with the Access/Start Control Unit (J518), which may be caused by capacitor and or transistor damage within the Access/Start
Control Unit (J518).
Production Solution
Introduction of an improved Access/Start Control Unit (J518).
Service
1. Verify that the wire connections are good at the Access/Start Control Unit (J518), and verify voltage supply and grounds are OK.
2. Remove the black/red wire from position 19 of the 20-pin connector located at the Access/Start Control Unit (J518).
Note:
This wire provides the signal (50) from the starter relay. Removal of this circuit is to prevent a possible voltage spike that could cause damage to the
Access/Start Control Unit (J518).
3. Tape the wire and terminal back on the wiring harness.
4. Replace the Access/Start Control Unit (J518).