clk 270 keyless go, drivers car can not lock/open

[johnny021]

I can start, stop engine.
Also I can open/close car with my key in pocket but from passenger side.

From driver side this is not working.

What should I check?
Going to official service takes them to give me a answer for 2 months.

I have clk 270 cdi elegance, from 2003.

 

[BlackC55]

I expect it will be a faulty door handle.

It needs to go on a Star to check some values. A Star is a MB diagnostic tool.

 

[karozza]

As already recommended, you really can't do much yourself but have it checked on STAR diagnostics to find the fault. It could be a problem with the door antenna which acknowledges the Keyless Go key when you press the door switch in the handle.