VWVortex - Heated Seats wiring diagram Nov 01, 2006Folks, My drivers heated seat is not working ( Has worked only once randomly though) and would like to be able to diagnose the fault properly with my multimeter. Does anyone have the heated seat wiring diagrams for a 2002 Passat Tdi 130?? I would think that the same seats are in Golfs and Boras, but i am not sure. I think that the fault is with the thermistor, but am not 100% sure as i VWVortex - seat wiring diagramMar 24, 2017VWVortex - Heated seats not working with DIY harness.Sep 15, 2014VWVortex - Seat Wiring HelpApr 22, 2009VWVortex - DIY: Heated seats for cars not pre wired!!Oct 26, 2008See more results The heated seats in my 2002 jetta don't work? - answers The heated seats in my 2002 jetta don't work? The 1990 VW Jetta turn signals will not work when the ground wire is broken or corroded. The turn signals may need the lightbulb's replaced.