My Porsche Cayenne S Key fob no longer unlocks the doors wirelessly but does work on the ignition. I tried unlocking door manually then hitting unlock/lock button of fob and nothing (per the manual) everything else works fine. Then I replaced the battery in the key fob. Still nothing. Any ideas?

With my 2006 Boxster s the key needs to be in the ignition but same thing put in key hold down button 1 presto... With my 2006 Boxster s the key needs to be in the ignition but same thing put in key hold down button 1 presto...

My '11 Cayenne S resolution was as follows...kind of a hybrid approach.

I unlocked door with "working" key. I then stood outside and held the "broken" key fob lock button for about 24 seconds and it finally locked the door. But then it would not unlock it. So, I put the key in and started the car with the broken key...took it out and then tried it and all worked fine.

One common sense thing to check first is to ensure the battery is fresh. You should see a red LED light flash when either button is pushed. If no flash; try changing batteries (CR2032) first. My '11 Cayenne S resolution was as follows...kind of a hybrid approach. I unlocked door with "working" key. I then stood outside and held the "broken" key fob lock button for about 24 seconds and it finally locked the door. But then it would not unlock it. So, I put the key in and started the car with the broken key...took it out and then tried it and all worked fine. One common sense thing to check first is to ensure the battery is fresh. You should see a red LED light flash when either button is pushed. If no flash; try changing batteries (CR2032) first.