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Rick150

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Rick150 last won the day on March 23

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  1. My electrical diagram only shows what's already posted, valid for 2009 4.8L, 3.6L & 4.8L Turbo.
  2. Thanks for the update. Imagine the cost of getting a repair shop to do all this!
  3. Can you take a close pic of the belt? Bend it back 180 degrees so we can see the drive side. Something strange going on unless it's well past it's replacement time. Usually belts just fly off but yours seems to have a lot of energy stored, like a rubber band. If it's not just a belt failure due to age then it's probably going to happen again so you need to understand why it failed. Check the pulleys by rotating them, they should be free running with no noise.
  4. There is no direct wiring from the drivers door to the tailgate, it goes to the Driver identification control unit that decides if all the conditions are met to open or close it then passes it on. As you can see from the circuits of the Tailgate that it all terminates to the CAN BUS which talks to the control unit. Could be that one of the conditions to activate is not true, which one I have no idea. The Cayenne has an electrical system that relies on LOGIC that's present on the CAN lines and in the control unit there will be a 'Truth Table' that decides if to let you activate anything. If you had a scanner it might point to what seems like an unrelated fault code that could help.
  5. The wiring for the lights is quite extensive and quite difficult to put into a format to post. I recommend going to eBay and purchasing a manual. Not all models comply with the wiring diagrams I have as they are mostly for the 957 although 955 is pretty much the same. This shows the lock and light combination.
  6. Just to put my mine at rest did you check fuse 31? when you try and open the tailgate it will make noise but not open if 31 is blown. It's under the left side dash cover.
  7. Don't know much about the trailer hitch, only that it is coded to the vehicle. I would check Ground MB41 near the left tail light.
  8. Your correct, MB23 is an important Ground for all those systems.
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