I have an 03 Mercedes-Benz c320...with a battery problem that I just cant figure out...had charging system checked...all ok...checked seat modules...though im not sure I did it right...i m also having a tail light flicker problem..when headlights are on...headlight flicker alternates with license plate bulb. Any insight is appreciated. Lou from Honolulu.

 

Battery is new and died twice in 3 days.

 

Welcome to the forum Lou - check out the link below to one of our site's DIY tech articles, it may have to do with the voltage regulator being faulty. Hopefully the article will help you troubleshoot and resolve the issue. If you have anymore questions or need specifics, feel free to post a Comment just below the tech article and we'll do our best to provide more details. Best of luck!

Mercedes-Benz W203 Voltage Regulator Replacement - (2001-2007) C230, C280, C350, C240, C320 | Pelican Parts DIY Maintenance Article


-Dmitry

 

The problem began when I put the battery in backwards on a dark early morning.

 

Glad to hear that it was a simple fix. Please let us know if you have any questions or if there's anything else that we can help with.


-Dmitry