keys locked in trunk
You have two choices: Immediate Relief: Call a mobile locksmith Have a few days?: Take a copy of your registration or title to a Benz dealer and they will make you new keys from your VIN number. You MUST be able to prove you own the car - or don't waste the trip.
Do you have a spare key?
Search Mercedes-Benz 300-Class Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Mercedes-Benz 300-Class Experts