Question about 1999 Volkswagen Jetta

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Help installing a heated seat in 1999 VW Jetta

Hello, I am adding a heated seat to my 1999 VW Jetta which previously did not have one. I installed the pad in the seat back and the seat bottom. I bought the switch/relay. All that is left is to wire the thing. After a second, closer, look at the wiring diagram I see something called the ''heated seat temperature sensor''. Previously when looking at the diagram I assumed this was part of the heating unit for the seat bottom. It is not. The two pads had only two wires each just like the wiring diagram showed. There was a small pigtail as part of the harness for the bottom unit but no sensor. The callout for the parts shows nothing extra. The parts guy could help no more. There were no technicians around to ask. This sensor goes to ground and the switch per the wiring diagram. I am wondering if anybody has run into this and knows if there is a source for this switch or if I really need it. Thanks, Jim

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You need that sensor or you will overheat the heaters and may start a fire. I imagine that the sensor shuts them down when they reach a certain temperature.

Try going to the dealership and asking the guys in the shop there. They would be the ones who could really tell you whats going on.

I hope this keeps you out of the hot seat!

-Captain Jake

Posted on Feb 13, 2009

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