To do a battery reset yes, you need to disconnect both battery cables and touch them. The networking on this vehicles is very complicated. By touching the cables together you could say it drains any reserve juice it may be storing so just simply disconnecting the ground cable will not reset anything. Once you touch the 2 cables together while disconnected it is like doing a computer reboot. If that does not work call Volvo to see if they are participating in the Volvo service for life program?
What you should get is at least a free scan of the network to see if maybe the network has crashed? If there is an issue with both the High and Low speed CANBus then the Central Electronic Module could have just failed? But you may need to pay some diagnostic time to get in that deep? But try the battery reset first and let me know what happens?
Saturday, November 5th, 2011 AT 4:31 AM