Just bought an '05 C240 from a non-MB dealer. How hard is it to obtain an extra key? I was told it's possible to buy one on ebay and have the dealer program it. I'm about 80 mi from a MB dealer. Thanks in advance for any response you can provide. - Peter

 

It is best to buy from a dealer. They will cancel the code on the missing key to avoid stealing the car. If you need a third key, they can can issue another one for you.