320 clk w208 intermitent key fob locking

[320clk]

my kepy fob is only intermitently locking my car, i dont have a spare key or anything, starts fine etc, but doesnt lock or unlock at times. could this be battery or something else?

if battery how to replace?

 

[grumpyoldgit]

First thing is to try new batteries.

If it's a three button remote, they are £227 from MB Dealers.

Check this video for how to replace batteries How to Swap a Battery in a Mercedes Benz Key Fob B200 used in Example - YouTube

 

[320clk]

thanks replaced new battery all sorted now.