After washing the car today, I wanted to adjust the seats, but unfortunately, the electric controls aren't working. The last time I adjusted the seats was two weeks ago.
I thought my car's problems would eventually end, but here we are again...
What advice can you give me before I go to an electrician?

 

Step one, check fuses, step two, replace the seat relay. Nothing slid under there to jam them, did it?

 

This morning I went to the garage to pick up my car and the seats adjusted without any problems.
I drove the car a few miles, and the seats again couldn't be adjusted. This happened a few more times.
In short, the seat adjustments work sometimes, and then sometimes they don't.

In the owner's manual, I identified two fuses responsible for the electric seat adjustments, numbers 21 and 22.
Unfortunately, I couldn't find the seat adjustment relay.

 

Use the search feature at the top left of the page. Enter, seat relay replace.

 

I found it in the PDF documentation on this forum.
https://www.crossfireforum.org/forum...seat-relay.pdf

 

I just ordered a new seat relay (A0025422219) from a Mercedes dealership, which is supposed to cost $56.
I learned that they only had two of these relays in stock at all Mercedes dealerships in Poland.

 

Best wishes.

 

Here is a video on how to remove the lower console cover located to the left of the steering wheel - to gain access to the seat control relay.

 

Today my mechanic replaced the seat control relay.