hey guys, a bddy of mine recommended me this website to try and solve a problem i have. My dad has a 92 Mercedes E300 with the original radio in it. I've been driving the car and i had to swap the battery for a new one because the old one kinda started dying out. But now the radio shows CODE whenever i turn it on. He's gonna be back in about a week and i'd really like to get that working when i have to go get him at the airport.
Can anyone give me a hand? I read that you need to get the serial number of the radio, but i have no clue how to get that done.