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,
To reset the radio in a 1994 Volvo 940, start by turning off the ignition and removing the key. Next, locate the radio's fuse in the fuse box and remove it for about 10 seconds before reinserting it. Alternatively, you can press and hold the "Power" button on the radio for about 10 seconds to reset it. After resetting, turn the ignition back on and check if the radio is functioning properly.
To reset the radio in a 2008 Volvo C70, you can try disconnecting the car battery for about 10-15 minutes. This will clear the radio's memory and may resolve any issues. After reconnecting the battery, turn on the ignition and the radio should reset to its default settings. If problems persist, consult the owner's manual or a dealership for further assistance.
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.
To reset the radio code in your 1996 Volvo GLT, first ensure the radio is turned on. If it displays "CODE," you’ll need to enter the correct security code, which is typically found in your owner’s manual or provided by a Volvo dealer. Use the preset buttons to input the code, then press the "OK" or "Enter" button to confirm. If you don’t have the code, you may need to contact a Volvo dealership for assistance.
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