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-   -   Drivers side heated seat problem (http://www.maxbimmer.com/forums/showthread.php?t=155409)

Marky_mark 01-22-2013 09:11 PM

Drivers side heated seat problem
 
Hello maxbimmer
As my tiltle states I have a problem with my driver side heated seat.
So the problem is this when you get into the car when its cold like first thing in the morning start the car up get ready to go and push the button to turn on the heated seat and it shuts off right away and if you push it again same thing it shuts off. Now after I have been driving and the car is warmed up and you push the button to turn on the heated seat it works and stays on like it would normaly work. So I have been doing some resarch on this problem and my guess is it could be the switch in the center consloe that needs to be replaced but I could be wrong and I don't want to just throw parts at this problem and not fix it so if anyone can give me some ideas or tips that would be great.
Mark

Lercs 01-27-2013 01:10 PM

try swapping the drivers side switch with the passenger side switch.

If that solves the problem, then get a new switch.

Dinanstu 01-30-2013 08:26 AM

I LOVE logic..!

Eurostyle 01-30-2013 11:26 AM

Quote:

Originally Posted by Lercs (Post 1596315)
try swapping the drivers side switch with the passenger side switch.

If that solves the problem, then get a new switch.

It won't work, as the switch is one unit, not left and right...

Dinanstu 01-30-2013 01:36 PM

Go woth Eurostyles advice - they do this all day long. I was thinking E36....

Eurostyle 01-30-2013 05:45 PM

I am in the same boat with my M5 and happens on both seats, tried changing the switch but it did not solve anything! Had no time to investigate as it never gets driven in the cold...Let us know if you find the solution!

starbuck 01-30-2013 09:36 PM

Having the same issue on driver seat for 2 months now on my 2000 323i. It keeps shutting off until the car warms up and then it will stay on.. Defeats the purpose of having heated seats if it only works when the car is warm.. Passenger seat works fine

Dinanstu 01-31-2013 07:46 AM

On my E36, it was a short in the heating pad itself that had to be replaced, but it never came on when it warmed up. I would guess its a wiring issue that is affected by heat (expansion) and probably at a wiring connection. The drivers side is also the most used, so the first to wear out. I would check out a wiring schematic and see where this common fault could be.

Fault monitoring

The electronic seat heating control system monitors the temperature sensor and heating mats for faults. Detected faults are stored in the fault code memory of the centre console switch centre.

The following faults can be recognized:

Short-circuit or line break

Short-circuit or line break of temperature sensors

Break in heating mats

If a break or short occurs at the temperature sensor, the seat heating is switched off in order to prevent overheating. The function LEDs are switched off.


I couldn't view this schematic for the E39, maybe you'll have better luck..

http://www.bmw-planet.com/diagrams/r...9new/index.htm


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