The car radio code is a security system that protects your grundig radio from thieves, but if you remove the radio from your vehicle or disconnect the battery, you will need to enter your grundig smart radio cd mrr unlock code so that the head unit can operate again. most times the radio code is printed on a small card and included in your owner's manual. If you have lost your grundig smart radio cd mrr radio code or bought a used car stereo, you can still easily retrieve your code.




Grundig Mc Series Code Calculator