Rear Wiper Relay

[wwilliams88]

I have a 2013 Cayenne V6 base.  I need the location of the rear wiper relay.  My rear wiper seems to be stuck on and I need to locate the relay to see if it is stuck in the on position

 

Thanks

[wwilliams88]

Anyone?  Is there a separate control module for the wiper or is it integral to the wiper motor?  As of now I've pulled the rear wiper fuse so that it will quit running 

[Loren]

You should have the dealer/opc try re-program that module before replacing it.

Many times that will cure the issue as well as update to the latest firmware.

[wwilliams88]

OK, found the issue.  First a bit of history to put it in context. 

 

During the latter part of the warranty period. the rear window washer quit producing fluid.  The dealership worked on the vehicle to "unclog" the lines and it worked again for a while.  Lately though the amount of fluid squirting out of the nozzles has been anemic at best. 

 

The other symptoms that started last weekend were wiper coming on by itself, not responding to the wiper switch, and randomly stopping in odd locations. After a bit of research it appeared to be similar to a failure of the park electrodes within the wiper motor assembly in other makes and models.  Based on that guess, I ordered a new wiper motor.

 

This is what I found.  It appears that during the repair, the technician did not properly seat the input nozzle of the wiper fluid to the wiper motor.  The base of this nozzle should be flush to the metal, not sitting a couple of mm above it.  If I turn it over it falls off in my hand.  Therefore, the nozzle was squirting fluid both into the sprayer and into the gear assembly, and had been doing so for some time.  When I pulled the cover off the gear assembly the grease looked mixed with rust and water.  So it is very likely that the park electrodes are corroded.

 

Replaced the motor assembly and everything works now.  Total time for repair, about 1.5 hours disassembly and assembly.

 

 

 

 

 

[jwrosen]

Thanks this is exactly the problem I'm having is and I'll now look at replacing my wiper motor... drives me nuts when it stops in random locations and turns on randomly?!? :eek: