Where do I start the windshild wiper off the back window of the porsche cayenne Turbo S ?

http://www.porscheownersmanuals.com/2011-boxster/vid/19/Interior-Windshield-Wipers
try this site

Have you checked to be sure the bulb isn't burned out? It could be that, a bad fuse, or a bad switch. Start by checking that you have voltage to the headlight. If you do, then change the light.

2005 Porsche Cayenne Owners Manual Unknown Binding January 1 2005

you most likely have bad oil seals in your turbo

i just fixed that problem on my 2003 cayenne turbo it is low voltage from the battery itself wich the porsche management system will shut it down to save other things replace battery with a good one under left hand side seat

Press and hold the Menu button until "Adjust Clock" comes up on the display
- Use the "arrow" buttons directly below the Menu button to set the hour
- Press Menu again and use the arrow keys to set minutes
- Press Menu again and choose between 12 and 24 hour clock
- Don't do anything else for a few seconds and the clock mode will turn off automatically

possibly the wiper motor is out or the switch that controls this function has a problem itself.

the repair manual is hard to find, now check the quality of engine oil , maybe need to replace and oil filter, try to use an high grade oil, for example, if now is using 5w_20 then use 10w_40

Have the system checked for a short ,and a possible, power tap into that curcuit.

the most common source is the turbo shaft seals leaking oil.

Hi i like to know how to do front and rear breaks on a 2003 PORSCHE Cayenne s i know to know hwta has to come off the car and what size tools i would thanks robert