khalilnasser

i have a c240 2002,
the radio is working fine but i dont have the code used to unlock it , now it's working but i am affraid if the battery malfunction the radio will ask for a code and i dont have it , i bought the car used and no catalogue or radio code found.

can i know the radio code , any tricks or something before the disater happen .
any suggestions

Glyn M Ruck

With proof of ownership Mercedes should be able to look up your radio activation code against your VIN as long as it's still the original. There might be a trick around it but I don't know it.

MIKESV8

If it's like other car manufacturers, you need to pull the radio out and give your dealer the code on the back of the radio.it can be done over the phone.

samaritrey

Very easy fix for mine. You need to take the fuse out on the back side of the radio while it is still plugged in. Left fuse out for 10 seconds put back in and it was good to go. I asked my dealer about this once and they said that our radios did not have a code to unlock them but the generation before ours like in the 01 e class did have one. But you know how reliable the dealers are for information

khalilnasser

i read some posts and i found this:
the c class 2002 and above radio dont have a code but if u install it on another car(or a diffrent model car ) it shows PROD on the screen .

can this be true ???
i have to change my battery and i am worried!!

and another guy said it can be programed from the car computer!to recognize the radio

Glyn M Ruck

My 2003 has a coded radio & is fitted with an Audio10

samaritrey

Strange Don't know what to tell you my radio only said Prod once and that is what I did to fix it. But the next time I disconected it I instaled my Command unit. My radio is now in another members car working fine without a code so I don't know.

drcliff

I had the radio replaced in my C240 a few days ago and I was told by the dealer that no code was necessary. I have taken their word on. I used this method a few years ago on my 1997 C230 which had a radio code. I have a battery charger which can connect via the cigarette lighter. Before I removed the battery I plugged in the charger via the lighter and then removed the battery. When I connected the new battery every thing was fine including the radio and clock. A point to note that my C230 had minimal electronics when compared to my C240. On the other hand my SLK is stored for the winter and its radio needs a code if I allow the battery to run down.

Glyn M Ruck

Running a quiescent current device while changing the battery to keep the car powered up is always a good idea with these cars. The cig lighter socket will only work on cars with a direct wired socket.

kirax2

O THANKS DUDE!! IT WORK, but hey think anyone can help? it still show no CD changer message on me... my CD changer is fine, my old head unit works fine, but the new one doesn't seems to sense it...

LokowtherKamiiu

If it's like other car manufacturers