38 problems related to exterior lighting have been reported for the 2009 Mercedes Benz C300. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Mercedes Benz C300 based on all problems reported for the 2009 C300.
Turned one vehicle and message stated to check left rear signal, signal light appeared to be low. After driving about 30 miles entire rear left signal/break/side light was completely unfunctional. On August 30th a visual inspection showed wiring to be frayed and a burnt mark on the plastic was observed.
At some point in time the left rear taillight started to dim dramatically. I opened the enclosure to change the bulbs thinking they were burnt out and found the wire harness as well as the bulb dock had melted because of overheating. A fuse did not blow and the cars computer never gave any indication of this issue. My concern is that the system could actually catch on fire and it is in the trunk and not far from the gas tank. After researching on mb world this appears to be a known problem and flaw. I think it should be looked into and determine if there is a greater issue here.
Tl- the contact owns a 2009 Mercedes Benz C300. The contact stated that all rear passenger lighting failed to illuminate on her vehicle. The vehicle was taken to the dealer for diagnostic testing, the dealer determine the contact's VIN was not a part of NHTSA campaign number: 14v177000 (exterior lighting), they would need to change the entire corroded connectors and bulb holders. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 40,000. Az.