'03 Cayenne S - Help.

[ajbanana]

Total newbie when it comes to cars... Just got an '03 Cayenne S with 57,000 Kms from a friend...

The engine is in good condition, however the Car has numerous electrical issues...

Biggest problem is the Rear-mounted Spare tyre not responsive. Rear trunk open light always on...

 

Numerous Fault Codes when I took it to the P-centre... Mobile pics of the codes because they wouldn't give them to me...???

1776 - Selector switch (faulty)

1575 - Manual control switched off (no display)

0778 - Steering angle sensor (No signal/communication)

1299 - GATEWAY (Implausible signal)

1592 - Air quality sensor (faulty)

0023 - Headlight beam adjustment angle sensor, rear....

0893 - Rear lid momentary-switch handle (Short circuit)

0927 - Terminal 30, right (right lighting) (Open circuit)

 

0576 - Terminal 15 (Implausible signal)

0325 - Rear window switch (Short circuit to ground)

0931 - Door lock, rear right (feedback) (Implausible....

0329 - Unlocking of rear lid (Electrical fault in circuit)

0928 - Door lock, driver's (feedback) (Implausible...

0103 - Interior locking button, rear right (button) (Implausible...

0926 - Terminal 30 (Open circuit)

0778 - Steering-angle sensor (No signal/communication...

0166 - Electronic ignition starting switch (Open circuit....

P1614 - Steering-angle sensor control module, no communication....

1314 - DME control module (Open circuit/short circuit to B+)

1336 - CAN comfort OFF (No signal/communication)

1317 - Instrument cluster (No signal/communication)

1218 - Ignition circuit - side airbag, passenger (Above...

1217 - Ignition circuit - side airbag, driver

1915 - Lumbar height adjustment sensor, vertical...

0907 - Load management operat. on vehicle electrical system control module (no display)

 

To add to this nightmare, they gave me 5 pages of spare parts for the car.

 

I have no idea where to start... Any insight as to what I should change asap, and what can wait till later... 

 

Please help...!!

 

[Loren]

The number one cause of "strange electrical problems" in Cayenne is a bad battery.

Check to see if your Cayenne has the optional second battery - both batteries should be both load tested (out of the car) and have their specific gravity (of each cell) tested.

 

Once you have a know good battery situation - then re-run the diagnostics tests using a Porsche tool (PST2, PIWIS, or PIWIS 2) or Durametric software. Only these diagnostics will give you reliable diagnostic data on Porsche cars. 

[wvicary]

If the battery/batteries are not the problem I would check for water migration into the cabin and corroded wiring.