Interior, A/C - Heated Steering Wheel Malfunction
SI B32 01 09Steering and Wheel Alignment
October 2009
Technical Service
This Service Information bulletin supersedes SI B32 01 09 dated May 2009.
[NEW] designates changes to this revision
SUBJECT
Heated Steering Wheel Malfunction
MODEL
E90, E91, E92, E93 (3 Series) produced from 9/2008 and equipped with the Heated Steering Wheel (SA 248)
E82, E88 (1 Series) produced from 9/2008 and equipped with the Heated Steering Wheel (SA 248)
SITUATION
Immediately following a cold start, if the heated steering wheel is switched on in addition to other electrical consumers (i.e., heated seats, rear defroster, etc.), it may switch off after 5-10 seconds of
operation. This is an intermittent situation. Cycling the key will typically restore function.
CAUSE
For the first few seconds after start-up, voltage levels may dip momentarily when electrical consumers are switched on. If the supply voltage dips below the threshold for the heated steering wheel, it will be
switched off.
This situation may be present even if the battery is properly charged and no charging system problems are present.
[NEW] CORRECTION
Replace the steering wheel electronics with an updated part.
[NEW] PROCEDURE
1. Remove the steering wheel airbag per Repair Instruction REP 32 34 020 (Standard steering wheel) or REP 32 34 030 (Sports steering wheel).
2. Remove the multifunction buttons per Repair Instruction REP 61 31 229.
3. Replace the steering wheel heating module as shown in the attachment SIB320109 Procedure.pdf.
NOTE:
The routing of the wire harness for the steering wheel heating module varies from model to model. Take note of how the original part was routed, and ensure that the replacement parts are routed the same way.
[NEW] PARTS INFORMATION
[NEW] WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
ATTACHMENTS
view PDF attachment B320109Procedure.
Disclaimer