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Old 10-23-2015, 02:15 PM   #1
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Brake Controller Wiring for 2016 Cayenne

Does anyone have a brake controller wiring diagram for the current model Porsche Cayenne? I went through this frustrating process back in 2008 when I bought my first Cayenne GTS and had hoped by now Porsche would admit the Cayenne is a tow vehicle. Seems the dealerships are still no help on the topic. I have a new Diesel on order which should arrive the same time my new AS 25 International arrives and would appreciate any help with the wiring. Thanks all.
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Old 10-24-2015, 08:10 AM   #2
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Brad,

See post 24 in this thread. It provides details of the parts required, how to locate the connector and a few other tips.

If you have some prior experience with basic wiring you should be able to DIY. A good auto mechanic with these details should also be able to do this for you.
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Old 10-24-2015, 08:52 AM   #3
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Great. Thanks for your help.

Brad
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Old 10-24-2015, 09:03 AM   #4
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The pre-wired brake connector is above the OBD port on your 92A. The dealer can hook up your controller, if the dealer doesn't have an Audi dealer with them it can be tough to get the connector housing and pins, as they need to be sourced from VW usually, but it can still be soldered in without a connector. The "connector" that some people think should come with their vehicle is actually a European 7 pin to US 7 pin receptacle that screws into the hitch. This needs to be bought and installed at the time of delivery, as it is purchased through Westfalia USA. Most dealers will stock it, or can get it the next day. For what ever reason VW does not ship Tauregs and Cayenne's with a country specific 7 pin connector, but it's simply 4 screws, and replaces a blank cover. If you see salt or weather use stainless hardware, anti-sieze and dielectric grease liberally on the screws and body side connector, and inside the 7 pin connector under the cover, as the pins corrode easily and may need replacement more than once if used heavily, this will save a lot of headache versus broken screws and annoying trailer lighting warnings. And contrary to what some posts say, we know plenty about towing....
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Old 10-24-2015, 05:25 PM   #5
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Seems the prewire connector is not in exactly the same place in all the Touaregs & Cayennes....but in the same vicinity depending on the factory installer.
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Old 10-26-2015, 08:34 AM   #6
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Many thanks Franswa. That information will be a huge help.

Brad
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