I have S40 2000 model. One day the radio went dead, door sensor came on and odometer and clock resets every time I start the car. This all happened at the same time so I believe that this is all connected. I did go through the fuses and did not find anything wrong there.

Any suggestions?

 

I'm sounding like a broken record, but a) get DiCE / VIDA's opinion. You can also check battery voltage and ALL connections. Volvo's go crazy with slightly low voltage.

 

+1 low voltage (battery, loose/dirty cables, etc) Usually the battery.