Electrical - Numerous System Malfunctions/Failures

SI B61 10 05

General Electrical Systems

August 2005
Technical Service

This Service Information bulletin supersedes S.I. B61 10 05 dated August 2005.

[NEW] designates changes to this revision

SUBJECT
Various Electrical Problems

MODEL
E90 (3 Series) vehicles produced to May 29, 2005

SITUATION
The customer may complain of the following intermittent conditions~ particularly if the vehicle is driven over bumps in the road:

^ Temporary total failure of the vehicle body electronics.

^ Seat heating failure.

^ Airbag warning lamp illuminated

^ ABS warning lamp illuminated.

^ Various K-CAN wire/message faults are stored: e.g. DE84, C944, E184, E584, A550, A3AE, A3AD, E444, E704, D904, C905, C907, C904.

CAUSE
Damaged seat wiring harness.

Note:
The damage is most likely to occur if the seat is adjusted to its lowest position and tilted to its uppermost position.

[NEW] CORRECTION
Repair the wiring harness and adequately insulate the sharp edges of the retaining plate for the fore-and-aft adjustment motor with fabric tape.





The illustration shows the underside of the seat cushion in the area of the seat module with the electrical connector detached, and the sharp metal edge most likely to damage the wiring harness.