Markjames1200

Hi, My PCM 2.1 in the 2005 Cayenne is a model number 6663, with the Bose set up and separate dvd drive for sat nav. After a hot day the screen image can be best described as a modern art show, and when you change from pages main to trip to maps to sound etc the text from the different pages stay and overlap on the newly selected page. I’ve been advised by a computer know-all friend the graphics chip solder could be the culprit and reflowing  (“melting it”) to renew the joint could repair it. But it’s fairly impossible to get to! 

I’ve seen another PCM for sale but its model number is a 6635 taken from a 2004. Would anyone know any issues swapping the units? Am I right in presuming all Cayenne’s sat navs would be driven by the separate dvd? Would all models automatically be configured for the Bose fibre optic set up? Or worst case scenario internally they’re built differently and won’t accommodate the fibre optic input. 

Any help greatly appreciated! 

Many thanks,

Mark 

Thank you for the welcome! 

They were telephone connections i had at hand so used for very low voltage. A crimp connector wasn't the best description to be honest, fresh twisted bare wires placed into one cavity of the connector and crushed down, more as a device to protect the connection rather than make the connection. Then that sealed in almalgamating tape.  I've no mechanical background, websites like this allow me to take on braver diy tasks than usual and save a fortune. So thank you very much. 

Ladies and gents, hello, had the dreaded "ignition lock faulty" warning on dash. Problem was the common water getting in from air-con (*correction - seems it was the sunroof drain) in footwell. Passenger side as I'm in the UK. All the cable loom looked fine until cutting into the fabric sleeve and found 4 groups of cables repaired. Water had got in again and started to corrode the thinner of the cables into a very delicate state. The cable that made all the difference was a very skinny single black cable. There were other bunches of (black) cables broken twisted together in bigger groups of 4 or 5 but this particular one was the thinnest of the gauges. I disconnected the battery, repaired that skinny black cable with a crimp and waterproof tape, connected the battery and the beep - beep - beep of before didn't happen. Car started, problem gone. So find that broken skinny black cable and breathe a big sigh of relief!