I reset mine by removing the radio fuse and leaving it out for 3 hours before reinserting it. After reinserting the radio fuse, the radio will then accept your code unique to your radio.
The reset code is on the back of the radio,
I reset my be removing the radio fuse from the fuse box to the left of the instrumentation panel, and then replacing it 3 hours later. It would then accept the code unique to my radio.
go to dealer ask them 4 code pass
I had to do this on my 96 850, and no, I did not have to have it running, just on accessories on ignition.
The CD player will not function until the radio is reset.
This is a dealer item. They can reset it.
I was told (just yesterday) by a Volvo dealership mechanic to leave the key in the on position for up to 2 hours. This applies to my 1994 940.
Disconnect the battery for 5 minutes get the radio code before doing this
Your car has a special 4 digit code It is able to be reset at a Volvo dealer. They will reflash the radio code and give you a copy. Mine was that way and now I don't have problem. For steps in putting the code in look in your owners manual
how do you reset engine light on 1991 volvo 240
Go to the fuse box at the driver's side and remove the radio fuse for 3 hours then replace.
In order to get your SRS Service Airbag light reset, You have to go to the Volvo dealership.