Continue here.
Now we have to take apart the connector with the 4 pins. Just use a flat screwdriver and careful pry it apart.
The 2 pins with the arrow are for the rear up/down and Back for and back. This connection only has power with the ignition on.
Now we have all 3 ends unplugged and the switch can be removed.
After the complete switch frame is pulled out, the individual switch can be pulled from the frame by pressing the 2 taps (arrow) with a screw driver.
There you have it.
Above is the old and below the new switch
The replacement switches are the same for left and right, and they are basically right switches. So the connectors for the left seat must be reversed in order to work correct. Otherwise the seat moves up when you push down, the back goes for when you push back.
The left one must be reconnected the same way as the old one.
This is the connector which must be reversed for the driver seat.
Now connect everything back as it was.
It's always a good idea to test all function before the seat is installed. I just use the Battery jumper for testing.
Hope this will help somebody who has the same issue.
Cheers
Engelbert