Heated Seat Stuck On!

[ChrisIS200SportTTE]

Ok so my wife came home yesterday and said here heated seat on her IS200 kept coming on whilst on her drive home. I laughed at her and said she was imagining it so I took her car for a spin this morning and yep she's right. The seat heater comes on intermittently while driving along without pressing the button in. If you press the button in then it comes on as normal but turn it off and 10 minutes later it's on again!

Any ideas guys? Is this a common problem? I guess some wiring must be knackered or something. will have to take it to an auto electrician. Just wondering if this has happened to anybody else? Her car is getting on a bit now, 11 years old and 153k on the clock.

Thanks

Chris

[sjrainsford]

I'd guess the main power to the seat heater is switched via a relay. If you can find the relay (not sure where as I'm at work) then swap it with the other seat. If the fault moves then it's defo the relay.

[ChrisIS200SportTTE]

Thanks for the reply.

I have no idea about car electronics so wouldn't even know where to start looking.

I looked on the internet and found its a common problem amongst VW's and Fords but not Lexus. It is the relay with those cars.

Hope it's not an expensive fix, I wouldn't have thought it would be?