Hi,

I have problems with PCM 2.0 in my 04 CS.

I get message 'System error: Unknown, Unknown, Unknown...' every time I start the car.

When I press confirm, message goes away. The whole system (radio, navi, phone, cd, cd charger, trip computer...) is working without any problems. There is just that annoying message, which making me nervous every time I sit in the car...

Does anyone know what could be problem?

Here is picture which I borrowed in 997 forum.

Thank you.

 

Hi , I have a 2006 CTTS with the very same fault except I have noticed that the MPG on the trip is stuck on 25.5 and never changes . Everything still works although sometimes the CD won't eject .Did you make any progress with this fault ?

 

I didn't solve this problem. I don't know what could bring this annoying message, since it's everything working without any problems...

 

did you read faults at dealer? it can just need to be recoded.

 

did you try resetting? hold down 3 numbers at the same time....i forget 1 4 and 8?