XC70 2003

[ir20032]

Hello,

I have problems with CEM, its not communicating to other blocks (SAS, BCM, TCM, AOC) .
Checked fuses and all relays cleaned.
Main problem, its sometimes go ok for 2km, and then all in dashbord stops working, gearbox dont go lover to 3 gear, can shift below it manualy
. and if i shut engin down, it wont start it. or sometimes it let start but shut it down after few secents. After take a negative wire off for minut and put it back, i can start it with no problems, but comunication problems stay.

Where to look? ALL wire are in place and not looking bad or that someone had done something there before
I drive with that car for about 6 years, and it has never been problems with electronic.

codes from vida:
CEM-1A5E SAS
CEM-1A5F BCM
CEM-1A61 TCM
CEM-1A64 AOC
CEM-DF14 CAN-L, high speed network
CEM-E000
CCM-0004
CEM-1C01 L-signal signal to high
CEM-df15 CAN-H high speed network

[jonesg]

there are services in europe that repair the cem.
you might want to inspect it for water damage,