Audi A4 Sedan (8K2) L4-2.0L Turbo (CAEB) Technical Service Bulletin # 391006 Date: 100929
Drivetrain - 'Sport Differential' Lamp ON/DTCs Set
39 Sports differential warning on in instrument cluster
39 10 06
2024271/1
September 29, 2010
AFFECTED VEHICLES
CONDITION
^ The "Sport differential" warning light (Figure 1) is illuminated in the instrument cluster.
^ The following DTCs are stored in the sports differential control unit (address 22):
^ DTC C1004F0 (Below torque tolerance in left clutch).
^ DTC C1005F0 (Below torque tolerance in right clutch).
TECHNICAL BACKGROUND
PRODUCTION SOLUTION
Optimized sports differential from serial number MKL0000034M100611.
SERVICE
Carefully perform guided fault finding for the above entries and make any necessary repairs.
^ If the DTCs are gone after completing the guided fault finding, carry out a thorough test drive. If there is no entry, continue to observe the vehicle
if necessary.
^ If the DTC is stored again after the test drive, check the build date of the differential.
602
The build date of the differential is stamped on the bottom of the passenger side of the housing (Figure 2, Point 2).
The build date of the differential in Figure 1 is:
Year Month Day
08 12 09
^ If the build date is before 6/11/2010, replace the rear differential according to the repair manual.
^ If the build date is 6/11/2010 or later, please create a Technical Assistance Center (TAC) ticket and call a TAC consultant.
WARRANTY
ADDITIONAL INFORMATION
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service
manuals for the latest information.
