- Mercedes-Benz C-Class: Why is My Key Fob Not Working?
Guide to diagnose trouble and recommended solutions
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DIY : How to Replace batteries in your keyfob with Pictures


I've been gone from the forum for quite some time, but have not forgotten how valuable a tool this is. I want to publicly thank the OP of this thread, blackcls63, for being so helpful. I was just able to open the key fob to my 1999 CLK320 Cabriolet. It's the first battery replacement in the 15 years I've owned the car. Yes...it's a garage queen with only 37000 miles, but it's the first Mercedes I've ever owned. I still remember the day I ordered it back in 1997 and when I took delivery in 1999. Thanks once again for your helpful DIY post.






