BMW Seat Switch Repair

Writeup by Bill Rickard

Edited by: Mike Oswald

Then with the switch levers pointing down you carefully pry open at the arrows.

You may want to put the whole thing in a large plastic bag to do this and set it on a table facing down.

Once you get it apart you'll see the contacts which look like little silver barbells and small springs underneath them.

The contacts will have some arced or pitted spots on them. If you roll them around slightly so that a new surface is exposed

that will be all you need to do to them.

You can see here the spots on the bottom of the contacts where they have been arcing, just roll them

around a quarter turn and then reassemble the whole thing. Reinstall the switch and try it.

Once in a while you'll have to pull it back out and clean off a little more corrosion in spots.....

Also after you sand the flat plate smear some of the conducting grease that you didn't disturb back over the areas you sanded.

The same thing can be done to the window switches, sunroof switch and transmission mode switch.

All of these switches have the same spring setup and contacts.


The same thing can be done to the window switches, sunroof switch and transmission mode switch.

They have the same spring setup and contacts.




Editor's note:

I have personally used this procedure to fix and repair my seat switches.

I found that using a dremel with a buffing wheel seemed to clean up the arcing marks on the board very easily

as the wheel on the dremel moves so quickly it seems to buff the surface clean and is very accurate. - M. Oswald


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