ASMT - S- Tronic Gearbox Warning Light ON, DTCP174B Or P174F

34 Gearbox warning light on - vehicles with 7 Speed S-tronic (DTC P174B or P174F in gearbox control unit)

34 12 12

2032227/1

December 21, 2012.





Affected Vehicles

Condition
The gearbox warning light is on. The following fault is logged in the gearbox control unit:

P174B (valve 4 in the sub-gearbox 1, electric complaint)

or

P174F (valve 4 in the sub-gearbox 2, electric complaint)

Technical Background
The entry occurs mainly up to an ATF temperature of 30C. Check this in the extended environmental conditions of the diagnosis protocol.

The entry only occurs once and cannot be reproduced.

After a reset there are no more complaints.

Production Solution.
Not Applicable.

Service
SVM Update Instructions

1. Follow all instructions in the attached TSB 2011732 00 Software Version Management (SVM), operating instructions.





2. Update the TCM (J217) using the SVM action code as listed in the table above if necessary.





Warranty

Additional Information
The following Technical Service Bulletin will be necessary to complete
this procedure:

^ TSB 2011732 00 Software Version Management (SVM), operating instructions.

All part and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Dept. and service manuals for the latest information.

Attachment
































TSB 2011732 00 Software Version Management (SVM), operating instructions.