One other thought - on my 1999 V70 I was able to pop out the radio and the code was written on top of the radio.
You can locate the radio code, for your 1991 Volvo, by consulting your owners manual. The owners manual should have all of the vehicle codes.
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.
You need to enter your radio code, it should have been supplied with the vehicle and or written in the front of the owners manual.
Check Owner's Manual. If you do not have one.Check Related links below.
There should be a acura business card in the owners manual that has a reset code
if the code is not located with your owners manual, go to a Lexus dealership to get a code. they may charge you for it.
I had the same problem with mine, I found a web sit with all the codes, all I did was google "codes for daewoo radio" and I found it.
I changed the battery and the auto radio writes or ask code in the crv Honda 2004.althought having it ,the radio writes error 1 toerror eafter many trials. what can I do to go out of it and I have a manual in Arabic which i don't understand I changed the battery and the auto radio writes or ask code in the crv Honda 2004.althought having it ,the radio writes error 1 toerror eafter many trials. what can I do to go out of it and I have a manual in Arabic which i don't understand
In a 1990 Volvo 240, the Radio Suppression Relay is typically located in the engine compartment, near the left fender. It is mounted on the relay board, which is situated close to the battery. If you're having trouble locating it, refer to the vehicle's service manual for a detailed diagram.
try 3523, it worked on my radio.
every radio has its own code it should be in your radio manual
It is part of the security on the car, if someone pulled the radio they could never get it to work. When the car loses power, it resets. The code is in your owner's manual for your car.