Trail Mutant
Well-known member
Have an 04 Jetta TDI, 270,000 and cannot find pics or directions on how to replace the thermostat sensor lead or wiring. Can I get help with this?
I mean the wiring that plugs into the sensor. Is this wiring part of the entire wiring harness or can it be individually replaced. The dealer is telling me that the wires have to be individually replaced and I find this hard to believe. My engine light came on and my code reader is telling me that the temperature is below thermostat regulation temperature. I have replaced the sensor and the thermostat, but the dealer is telling me that because I did not use factory parts they cannot tell me the problem.
The wire harness is in like 2 pieces. Repair the individual conductors............................... The dealer is telling me that the wires have to be individually replaced and I find this hard to believe. .................................
VW does not sell replacement harnesses; they sell individual "repair wire" kits which consists of yellow wires a foot long or so with the factory connectors installed at both ends.
Available in the various sizes, you remove the connector(s) associated with the broken wire(s) from the factory connector, install the new connectors, and then cut the yellow wire(s) to the right lengh and splice 'em into the original harness.
4-5 bucks each, IIRC, and a terminal release tool of the proper size is pretty much mandatory to get the old terminals out.