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      02-02-2010, 04:09 PM   #6
DnA Diesel
Major
 
Drives: 09 335d Sport SGrey/Blk/Blk
Join Date: Dec 2009
Location: Kingston, Ontario, Canada

Posts: 1,101
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It stays on until selected off.

The SIB (#32 01 09) is referred to here.

Quote:
Service Information bulletin SI B32 01 09 dated October 2009.

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.

CORRECTION
Replace the steering wheel electronics with an updated part.

more...
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2009 335d Sport - Space Grey, Gloss Black on Black Leather (pics)

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