Hello all you fellow Merc fans! I was checking out your site to find out how I could replace the 3 button key on my 2004 C200 CDi Avantgard as the plastic housing cracked...I liked what I saw and thought you are all doing a fantastic job of keeping us all on the road for minimum investment! I've still got a dodgy key (thinking of getting a used key off eBay and changing the housing) but in the meantime I have a hint some of you might like to use... as a mountain biker....I thought about putting a self adhesive inner tube repair patch over the cracked bit of the key, and hey presto it does make a great repair. I'm looking forward to contributing and trawling the site for many happy motoring years to come. THANK YOU! Terry.