Radio volvo v70 :2001: hu603

ALL THAT ANs NEVER SCANNED THE PCM ONCE.
TO SEE RADIO COMMUNICATION ERRORS ON THE NETWORK
yes this radio and all sub units run off the CAN_BUS network.
OR THE SAME ACT SHOWS RADIO, LICENSE CODE LOST.
MODERN CARS NOW EVEN PULLING THE MAIN 12V CAR BATTERY THE RADIO GOES DEAD. (OFFLINE) THE DAY1 NEW ARE THE GLOVE BOX IS OPENED
AND A TAG IS THERE, SAYS DO NOT LOSE THIS LICENSE. CODE
PUT IT IN A SAFE PLACE IT STATES.
THIS ANSWER IF FOR FACTORY oem CAR AND RADIOS.
or ask VOLVO for help, why skip that?

the service manual shows where are fuses reside
some cars have 3 fuse boxes
engine bay
cab
and trunk, <<< some cars with rear amps have fuse here too.
read the service manual and the matching radio page schematics.
wow 9 speakers and SUB woofer here.
ok have the SM on my screen , USA car. (vin)

scan it first and you did not.
f22, f28, f65/ f66/f67 fuse blown
R11B relay bad.

learn to use a scan tool and win.
stop guessing first.
scan it and see comm errors? oops.

does radio have head phone jacks to test for sound"?<< not sure me.

Almost always an internal radio problem

Not sure if you've reset it before but here are the directions. Pay attention to last paragraph.
If you have done this sorry for not having another answer.
The trick is to know that only the channel preset button labeled 1,2,3,4 are used to enter the PIN - each channel button is used to increment the value of one digit on the display. Channel preset '1' increments the first digit, '2' the second, and so on. Each press of a channel button increments the corresponding digit by one, cycling back to 0 and around again.

So to enter 1924 as a PIN, you'd start with the display reading '0000' and press
- preset 1 once (increment 0 -> 1)
- preset 2 nine times (increment 0 -> 9)
- preset 3 twice (increment 0 -> 2)
- preset 4 four times (increment 0 -> 4)

The last one's easy, as the radio unlocks as soon as you hit the right code so you just keep pressing preset button 4 'til it unlocks! (i.e. it's a 4 digit PIN but only as secure as a 3 digit one.

Had same problem with radio in 84 Ford Ranger years ago, was still under warranty and dealer had to replace radio.

You could have a stuck button that is blocking the rest of the buttons from functioning. Check the hand controls on the steering and if all is ok, try get the radio out and unplug it. If this now gives you heater display and functionality the problem is on the radio itself.

Before you delve too deep, disconnect the battery for a few minutes. Sometimes they just get "confused" and need a reboot! Its worth a try!

by audrey_oMember since:21 July 2006Total points:5,110 (Level 5)

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If the code is 2275 for example.

Use the channel select buttons on the front of the radio.
Press channel button 1 twice
Press channel button 2 twice
Press channel button 3 seven times then
channel button 4 five times.

Once the code is in, the radio normally starts automatically.

It sounds like you have a defective radio.

It will stop the search if you push the exit button, I also believe the dealer can do a software uprgrade to prevent it from happening again.

The memory wire of the radio,(the power for the clock and channel settings) is usually connected to the same circuit as the cigarette lighter. (there is a seperate fuse for radio) Check your cigarette lighter socket for damage or dirt, etc. could be causing the memory fuse to blow. Also check your cig lighter accesories (like cell phone chargers,etc.)

P.S. The backlight is also a seperate circuit (connected to interior light/parking light circuit)

check the antenna cable..some have two . One for am and one for fm..No antenna no station..You did not say if the light on the radio is on to show you the station channel..May be fuse