Question about 2006 Porsche Cayenne
Hi. The left hand wiper has stopped working on my 2005 porsche Cayenne.The right one works as normal.Any ideas ? Could it be the fuse ?
The left and right wiper are on the same fuse and same switch, as well as the same wiper motor. That being said- if one works and the other doesn't, the fault lies with the wiper motor itself, or with the wiper shaft (where the arm connects to the motor.)
A wiper motor has 2 output shafts that either wiper arm connects to. At the base of your left wiper arm is a small cap. (there's one on the right side too, but let it be since it is working!) Remove this and unbolt the wiper arm from the output shaft and pull outwards to remove it.
When you examine the assembly you will notice that the wiper arm and output shaft are splined, which allows the rotational movement of the output shaft to be transferred to the wiper arm. It is common for the contact area of these splines to become damaged. This is often caused by excessive drag on the wiper arm and blade. (ie running the wipers over a dry windshield, or trying to unstick a wiper blade that is frozen to the windshield)
The 1st test is to turn on the wipers and observe the now exposed wiper shaft. Does it spin at all? If it does then problem is damaged splines on the wiper arm. (the arm is made of much softer metal than the output shaft, which makes it easier to repair this problem.)
If it turns out that the splines are damaged the 1st thing to try is to clean them up a bit. I have had luck using a very sharp awl to trace the path of the splines. A locksmiths file is very useful if you need to reshape them a bit. After cleaning up the splines reattach the wiper arm and see if it works. If not the arm will need to be replaced.
Now, if you test to see if the output shaft is turning and it is motionless while the other side wipes away, then the wiper motor and assembly needs to be replaced.
When reinstalling the wiper arm do your best to make its position match the other arm. press it onto the shaft and run the wipers a bit to make sure it is where you want it before bolting it back up.
Posted on Apr 24, 2009
I have a right hand drive Cayenne Turbo (2004) and for about a year the passenger side winscreen wiper has failed to clear a section in the centre of the wiper. If you look closely at the blade when it is at rest you can see a small gap, so it can't clear the screen. I have tried tightening the bolts up, this helps a little (90% performance for a while), then after a few days of use they loosen off again and i am back to square one.
I have replaced the blades with new ones and changed them over, but still have the problem.
Any ideas? :)
Posted on Nov 17, 2009
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Posted on Jan 02, 2017
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