A/T - Stays in 3rd or 4th Gear Too Long Driving Uphill
SI B24 05 06Automatic Transmission
December 2009
Technical Service
This Service Information bulletin supersedes SI B24 05 06 dated October 2006.
[NEW] designates changes to this revision
SUBJECT
Delayed Upshift May Occur Uphill in 3rd or 4th Gear
MODEL
E83, X3 with M54 and GM5
SITUATION
The customer complains that the transmission will not upshift, usually after going up a slight incline, and stays in either 3rd or 4th gear too long.
CAUSE
Calibration sensitivity in the Hill recognition program of the EGS transmission module.
[NEW] CORRECTION
Program the EGS using the latest version of ISTA/P.
The latest EGS calibration can be identified by the appropriate program number:
3.0i 7570740
2.5i - 7570736
[NEW] WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
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