05 sl 500 replaced rear battery radio dead! Need tunes!!ha

[disbo100]

Hey folks,

My books dont have a code for the radio.

The screen comes up but nothing happens with radio or cd..

Pls help with the trick so I can jam some 70s disco!! Ha!

Thanks

[disbo100]

There is no code for this year. I disconnected the battery again and all came back!! Sweet!!

If anyone has this issue. Take the pos and neg off for a few mins and put back and all should be good