One problem related to fog lights has been reported for the 2010 Mercedes Benz C300. The most recently reported issues are listed below.
2010 C300 Mercedes Benz. Consumer states the fog light is defective the consumer stated the right side glass fog light cover cracked without any external force. The dealer informed the consumer the replacement cost would be $300. The dealer stated the light might short circuit the entire electrical system if left uncovered. The consumer stated on April 9, 2011 the left side glass fog light cover cracked. The consumer took the vehicle to the dealer where they replaced it, because they said it was defective. However, they did not replace the right side fog light cover.