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Welcome to Hartech, the UK's leading Independent Porsche engine specialists, located in Bolton, UK

996 Heated Seat Wiring Problem

S

SeanD

Suzuka
Joined
25 Aug 2006
Messages
1,139
Ok, this is starting to really annoy me.

A while back the car developed a very intermittent fault where the heated seat will come on its own. The indicator goes to red and sometimes flashes and sometimes is on for longer periods, coming and going with acceleration and braking. Changing the height of the seat makes it go away (or restart).

I dropped it into Reading as soon as it started happening. Unfortunately wiring is excluded from the warranty so I paid for hours and some connections to be re-made. Thought it was fixed but I adjusted the seat tonight and it has started again. Arghhh!

Anyone had this before? If so what was the solution?

Also I am travelling for the next couple of weeks so she will be in the barn under the cover. Does anyone know if the heated seat circuit is totally isolated when the ignition is off? Just a bit wary of wiring faults and the possibility of fire.

Migration info. Legacy thread was 78577
 
Looks like you are on your own with this one - soory I can't hep. Once you find out what it is though, post up the answer.

Migration info. Legacy thread was 78634
 
Sounds like faulty timer relay under seat, this runs the heated seats and is supplied with a constant power, so could techically run the seat heating with the key out.

PS This will flatten the battery very quickly.




Migration info. Legacy thread was 84387
 
Thanks for this. Luckily it only does it in certain seat positions and when teh car is moving. It is booked into the OPC and I will tell them where to look!

Migration info. Legacy thread was 84417
 
Sean

Mine does this - did you ever sort it out ?


Migration info. Legacy thread was 127658
 
Whatever it is, I'd whip the fuse out 'til its sorted.

Migration info. Legacy thread was 128183
 
It was fixed and then it came back. I have been told that the timer relay is the issue, apparently quite fragile.

Migration info. Legacy thread was 128285
 
AFAIK yes

Migration info. Legacy thread was 128427
 
Sean did you get this fixed under warranty in the end??

The switches, relays & control units are all covered.


Migration info. Legacy thread was 128434
 
The final fix yes (although I have a suspicion it has come back), but not the initial one. Wiring is not covered so when they initially stripped it out, did a bit of soldering and added some extra insulation I had to stick my hand in my pocket. We will be having a negociation at the next service mind you.

The relay is covered, as it is a component of the electrical system.

Migration info. Legacy thread was 128447
 
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