Engine A/T Controls - Delayed Shifts/Low Power
SI B 24 08 07Automatic Transmission
October 2007
Technical Service
This Service Information bulletin supersedes SI B24 08 07 dated May 2007.
[NEW] designates changes to this revision
SUBJECT
GM6 - Various Transmission and Driveability Complaints
MODEL
E83 (X3) with [NEW] 6L45R (GM6) automatic transmission produced from 8/2006 up to 10/2007
[NEW] SITUATION
The customer may complain of transmission shift quality or driveability issues, as described in the situations below:
1. There is a delay in throttle response through the 1-2 upshift when accelerating from a stop.
2. There is a lack of power or hesitation when reapplying throttle, during either a 4-3 or 3-2 tip-in downshift. This may occur after slowing with a closed throttle.
3. Harsh downshifts when slowing on a roadway with a rising gradient (EGS is in a hill program).
[NEW] CAUSES
EGS software calibration DME software calibration
[NEW] CORRECTION
In the event of a customer complaint, reprogram the EGS using only Progman V27.02.00 or higher.
The latest X3 EGS software may be identified as: 0489RZ0RS450 R0FN10 using the following diagnosis path:
Control-module functions / EGS transmission control Diagnosis requests / Status, data reference
It is important that the DME is also at the latest software level. Refer to SI B 12 17 07 for more information concerning the DME software identification and improvements.
DO NOT perform the transmission adaptation under Service Functions, as prompted on the Progman screen. This test module is not functional and will be removed in a future DIS DVD release.
Always refer to SI B 24 11 07 for more information regarding GM6 transmission terminology, adaptation functionality, and adaptation procedures.
Important notes:
^ The transmission must be in the "Park" position, otherwise the programming may abort with the following error:
EGS - Diagnostic trouble 2089 (COAPI) - Programming mode changeover faulty
^ Only use an approved BMW battery charger set to PS (Power Supply) mode and properly configured for the applicable battery AH rating.
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
Please refer to the latest KSD for all applicable labor operations and allowances.
If the appropriate labor operation is not contained in KSD, then a work time labor operation should be used.
Defect Code 24 00 38 61 00
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