Experiencing issues with your OBD2 port on your 2010 Mercedes C300? You’re not alone, and the fix might be simpler than you think. Many Mercedes-Benz owners rely on OBD2 scanners for diagnostics, whether it’s to decipher a check engine light or prepare for a smog test. However, a non-functional OBD2 port can leave you stranded, unable to communicate with your vehicle’s computer.
One often-overlooked culprit behind a dead OBD2 port is a simple blown fuse. In the case of the 2010 Mercedes C300, there’s a specific fuse dedicated to powering the diagnostic port. This fuse, labeled “Diagnostic Port”, is located in the engine bay fuse box. For the 2010 C300 model, you’ll find it at bay number 62, and it’s a 15 AMP fuse.