A/T - Clunks On Engine Start Up

SI B24 08 08
Automatic Transmission

November 2010
Technical Service

This Service Information bulletin supersedes SI B24 08 08 dated December 2008.

[NEW] designates changes to this revision

SUBJECT
E6x, E70 with 6HP19TU - Transmission Clunks After Engine Start

MODEL
E60, E61 with N52K or N54 and 6HP19TU produced from 03/07 up to 09/08

E70 (X5 3.0) with N52K and 6HP19TU produced from 12/06 up to 10/08

SITUATION

The customer may complain about a clunking noise heard from the transmission, sometimes accompanied by a "bang", felt in the rear of the vehicle after engine start-up. This complaint can be intermittently reproduced when the transmission is in the P position (the noise and/or jolt does not occur when the selector gear is placed in N).

CAUSE

EGS software calibration in regards to the transmission self-check test on the engine start

SOLUTION
[NEW] Check the vehicle's integration level.

If the integration level is:

^ On E60 and E61 vehicles, E060-08-03-550 or lower

^ On E70 vehicles, E070-08-05-525 or lower

[NEW] Reprogram and recode the complete vehicle with the current ISTA/P version. The target integration levels are E060-08-09-520 or E070-08-09-520, respectively, for E60, E61 and E70 vehicles.








[NEW] WARRANTY INFORMATION