Cayenne 2004 Electrical wiring diagrams
 

Hi, I am the happy owner :mad: of a 2004 V6 Cayenne (tiptronic) strugeling With corrosion of the wiring harnesses. The garage is referring to an after market wiring harness set, not documented on Porsche PET, that is including all the wiring within the vehicle.
The car has had problem With the fuel pump (corrosion on a wire), still having problem With the gir (not showing proper gear on Dashboard and not shifting to manual from the stick etc...)
Any ideas?

Have the shop double check the shifter cable adjustment, have seen that cause a similar issue. Never heard of the aftermarket harness your shop recommended.