My friend and I got a used xc70 from auction. He is going to do the body work and im doing the rest. It was hit in the right rear, pretty light hit. Broke the lower tail and bumper and some trim.

He drove it home, no heat or gauges.

I scanned it with vida and found no network to the rear of the car after the CEM. The auction showed the gauges and miles working. But not when we picked it up. Maybe jumped backwards?

Starts runs and drives, all fuses good in the engine bay, left side of dash and the rear electronic module. The REM is on the left side, not part of the accident.

The three codes i get are CEM-DF01, CEM-E001 and CEM-DF07, all saying lowspeed network signal missing or faulty signal.

The REM has 12v. VIDA says the REM powers the CEM.

I guess i gotta get under the dash to explore the CEM.

Id love some advice!

Thanks.