Parking Aid issue

[Goodie]

Can anyone help before i take to mercedes?

My reverse parking aid has stopped working but the front is fine!
Any suggestions please
Looked in hand book but not much help

 

[grober]

Tried cleaning the sensors? Not !!!with a pressure washer which can evidently damage them.

 

[Goodie]

They seem clean, but will give the a clean

Thanks for reply

 

[grumpyoldgit]

Have you checked the fuses. I don't know about the W204, but the W203 has two fuses showing on the fuse chart for the Parktronic. Chart normally stowed in the dashboard fusebox I believe.