My 07 R56 S, has a problem with the front driver's seat: the backrest is a bit shaky, so it moves a bit forward when braking.

The passenger's seat is OK and doesn't have this play (or it's very minimal). Is there a fix for this, or must I change the seat's frame?

Everything else, including the memory function works fine.

 

My 08 does this, and drives me crazy. Both passenger and driver seat have the same play. Dealer claimed it was normal.

 

:(

I wouldn't think it is fixable without changing the seat frame... And it is a big hustle to take it out, "undress" it, just to find out the catches are worn.

 

OK... After quite some time I came up with a (temporary??) solution...

What I did was wrap the locator pin with some stainless-steel wire I had home and the problem was solved! I am trying to improve the fix by putting something rubbery around the pin, but it is not easy to push it around the pin (it buckles).

I wrapped the wire around itself so it was stronger... I redid the fix after taking the photos so that the wire is thicker and better spread over the surface.

I don't think this will really last long, but for 15min and no cost, I would do it again instead of gambling with buying a new backrest frame...

PS: The backrest will still shake a bit, but it is more like 0.5mm than the 4mm (measuring the top) it previously was. This is the same as the passenger's side seat, which always was felt sturdier. I guess if you can wrap the pin with a thicker and more stronger material the shake would be completely gone...

Here are some photos: