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06 Turbo S with communication problem

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Hello, Im new to the forum ask me If you got questions about me or my car!

4 years ago I got a 05 Cayenne S  but sold it for an W211 e550 because I wanted something rear wheel drive. But I liked the SUV feeling and always looked back to an Cayenne. So 3 months ago I bought myself again an Cayenne but wanted more Horses, so I got a Turbo S, Im fully in love with the car  but at the moment It got big problems.


After a night with rain I wanted to drive to work but the car showed some weird thinks like brake proportioning warning, ABS light on, no Air suspension and the Brakes lights doesnt work. So no engine wanted to turn over because I got no brake lights. I pressed the Starter relay by hand and the car was runing, gearbox was in limp mode also.


I looked on google for hours and found the cable thing under the carpet. So I looked under the carpet on the driver und passenger side both were wet. So I checked the cables, the looked all fine, but I resolderd them just to be sure, fixed nothing.  At the same time I dryed the carpet, AC was clogged, it's fixed.

After this I looked at a lot of cables and anything and eventually I found a broken 60A under the driver seat this leads to the relay 443 under the seat. Got a new 60A and only the gearbox and air suspension is not longer in limp mode.


My delphi tester which worked fine before can not connect to the DME,ABS/PSM.


Gateway shows:

1314 DME no connection sporadically

1316 ABS no connection permanently

0532 power supply sporadically


Instrument cluster shows:

1299 diagnostic interface for databus no connection permanently

1316 ABS no connection permanently



So far I bought a new batterie, checked all fuses, a lot of wires and connectors, the connector on the Gateway itself and I found nothing wrong with it.

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