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motivation

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  • Porsche Club
    PCA (Porsche Club of America)
  • Present cars
    08 Cayenne Gts

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  1. Thank you for the replies. I swapped the relay from the Engine Compartment with the terminal 15 relay, but still had the same symptoms. The Kessy has most of the codes stored, I'm thinking maybe something with the CAN Bus could be wrong?
  2. Hey Everyone I have a 2008 Porsche Cayenne GTS V8. I have multiple symptoms, the brake proportioning warning is on, Ignition Lock-fault, ABS light on, Brake light flashing and the brake lights stay on continuously even with the car off. The car runs fine with no issues except for the warning lights on. The Codes I found: 1314 DME Control Module 1315 Tiptronic Control Module 1316 PSM Control Module 0456 KESSY Control Module (CAN Drive) 0455 KESSY Control Module (CAN Comfort) 15582 Please refer to vehicle service manual! 15583 Please refer to vehicle service manual! 0185 Relay for terminal 15 (activation) 0576 Terminal 15 Both these codes fixed by finding two broken wires (corroded), cut the wires and re-spliced them together. 1312 CAN drive I've found numerous forums on this website that helped me fix a couple of the issues, but not most of them. I checked for both front foot well carpets being wet, found passenger front foot well drenched wet. I pulled the passenger front seat out of the vehicle, pulled back the carpet and found a little water build up. I checked all the a/c drains cleaned them out, but found no water come out. Checked the sunroof drain hoses, found them good, checked the evaporator drain and found it to be good also. Cleaned and dried the water out from the passenger front foot well, checked the wire loom and found three broken wires, repaired all three wires. Still none of the symptoms were fixed by fixing those wires. Pulled the driver side seat out and pulled the carpet back, found three wire broken their, repaired them. Two of those wires were for the relay 15 that helped fix the ignition lock fault. Fixed a third wire and found corrosion on four black thick wires combined as a sonic weld. Cut the wire and repaired them, those did not fix any of the symptoms. I checked all three fuse box locations, driver and passenger fuse box and engine compartment fuse box. Found all the fuses good. I checked all the ABS wheel speed sensor and the wires that go to the brake pads, they all seemed in good condition. Checked the battery and found it to be good, but still replaced it just in case with another new battery. Still the same issues, replaced that battery with another new one, just wanted to rule out battery for sure, still found same symptoms. I disconnected the battery for 30 minutes and cleared codes, but still the codes return immediately and the lights also (getting irritated right about now). I disconnected the ABS Module, but the warning lights are still on, I was thinking maybe the ABS Module was bringing down the system, this check I don't think still eliminates the possibility of the module being bad. The brake lights always stay on, when disconnecting the ABS module the brake lights turn off, but when reconnecting the brake lights stay back on. I believe on these newer Cayenne's that it does not have a brake pressure switch, but instead the signal voltage for the brake lights are sent by the ABS Module. I checked the ground wires (thick brown colored wires) for any corrosion none found (checked 8 different ground points on vehicle). I found after market head unit and disconnected it, but found nothing to change. I think perhaps the ABS Pump with Module and DME are bad or maybe something else, but I don't wanna take a guess since those items are extremely expensive. Any help would be greatly appreciated!
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