First of all my appologies for poor english. I will also try to make long story short.
A few months ago my wife was driving the car, all of a sudden a warning appears "Engine temperature to high". So she parked the car and we had a towtruck taking it to an authorised, and the largest Porsche workshop here in Stockholm.
Ok, so they change the oil level sensor. I got the car back a few days later. Then, after driving apprx 45 minutes the same warning appears "Engine temperature to high".
Ok, so back to the workshop, had the car there for about two weeks since they had to order next piece from Germany. This time they changed the whole instrument cluster, and guaranteed that my problem should be fixed by now.
A few days after i got my car back, the following happens - A new warning: "Oil level monitoring failure. Workshop"
+ The oil temperature gauge, not sure if this is the correct name, (iīm meaning the one that shows oil temperature) start dipping to the bottom (lowest) and then up to its original possition (about middle), and then dip again.
This happens sometimes every 15 minutes, sometimes every other day.
Does not matter if engine is hot or cold.

I have payed around US 2500 (+ the insurance company have payed around US 1000) to Porsche for the repairs, but still they have not solved my problem.
I have been fighting a lot for this. They simply say that electronic issues can be difficult, and i simply have to live with the costs. They claim that they just follow a manual. Finally, after going rather high in the Porsche organisation i managed to get around US 1500 back from them.

They said that the next step for them (again following some manual) would be to exchange the whole "cablesystem" (sorry donīt know what this is called in english).

But since i got some money back from them, we are done with eachother + i donīt have much confident in their workshop, obviously i will turn elsewere.

I have been recommended another workshop that is supposed to be very good.
Let me just hope that they can help me out.

What are your thoughts about this matter that is driving me crazy?

thanks guys
Peter

 

hmm...never heard of that happening before but keep us posted.

It's always advisable to get a 2nd opinion from another shop. Do you have Porsche shops (non-dealer) in town? Find one and talk to someone who really knows Porsches....and not just a generic mechanic. Good luck.

 

Based on what I have seen in the past, first thing I would check are the ignition coils. It may sound silly, but trust me. The oil level/temp sensor grounds right next to them, and misfiring coils can cause RFI that can alter the signal. Secondly, you(or your shop) can create a separate ground cable for the sensor, and ground it to the alternator casing/bracket where the OEM engine ground bolts to. The least intrusive of the above is the coils, plus if this is the cause, it needs to be remedied regardless. PM me or post with any further questions.

 

Hi

I am also based in Stockholm and my Cayenne S 2004 have the same problem as you have. Did you find out what was your problem?

Need help!!

Rolf

 

I will send you a PM w my phonenumber so you can call me.