Battery problems

[Vman]

I had a guy spend two hours replacing the windshield with the doors open and no key in the cayenne, after the job the battery was dead.

I have the center counsel light main switch and side switches turned to off when the doors open, but the rear trunk light does not have an on off switch...could that be the drain? Hard to believe that one light would kill the battery so soon.

Later the same day I charged the battery, and the car started, then we left the car unlocked with the windows down to to off gas any windshield stuff and the battery died again. The car was purchased in March 2007 and has 30,000 miles, dealer says it is common practice to trickle charge a cayenne battery whenever they are working on a car....sounds a bit suspect.

The dealer offered to check the battery for $110 if it is bad they will replace it under warranty, if not its on me. To buy a new battery is $130...but its under the seat...anybody replaced one of these... is their a DIY somewhere?

Thanks,

VM

[White987S]

This may help you:

http://www.renntech.org/forums/index.php?s...c=27723&hl=

[Vman]

This may help you:

http://www.renntech.org/forums/index.php?s...c=27723&hl=

Its a start, but my car is a daily driver and is losing charge overnight now, so either the battery is dead or their is a draw somewhere, anyone replace a battery without doing to the dealer...DIY anywhere?

[wvicary]

The OEM batteries are rubbish in Porsche. I would replace it and it is sound advice to use a charger when working on these vehicles are they have many high draw consumers. Search and you'll find a DIY for battery replacement.

[cmoore1]

If you replace the battery be sure to get a sealed maintenance free battery like the Varta that came in my 06 S--you don't want to be unbolting the seat all the time to add water!