Benz radios have a security code. If the battery is disconnected they think they are stolenand shut down. You need a code to re activate.
That said, I am unaware that the Crossfire unit is so equiped. I have disconnected my battery often with no issues.
That said, I cannot say for certain the radio does not have such a lockout theft protection.
I do not see it in the manual.
Much less can I find a code on any paperwork.
If the radio is out of the car, try powering it up. If it does,no codes. Your OK to go.
