I just replaced the old cracked wood centre console around the stick shift of my 420sel (1986).

Upon doing so, the motorized driver's window became sluggish going down. I took out one of the switches from the old console and replaced the "faulty" switch that was in the newer console and immediately it worked perfectly.

So, I put the whole thing back together again and everything worked beautifully. I went for a drive and parked. When i came back to the car, 2 hours later, it wasn't working at all again. I went back and plugged in 2 other spare, functioning switches and it still didn't work. All wires and plugs are secure and fuses are fine too.

Up until I changed the console, the window was working perfectly.
What's going on??????

The solder on one of the pins in the connector that plugs on to the switch may have become brittle. It's possible when you moved the console, and later replaced the switches, the wires moved enough to loosen a connection, resulting in high resistance and a slow motor. Then, the solder joint completely opened, and thus no motor operation.

It's not for the faint of heart, but the connector can be pried open. The connector pins and wires will then be loose, so take care and keep track of which pin/wire went where... If you find a pin that's separated from its wire, it can be re-soldered. Not fun, but possible

Best Regards,
Jim

thanks

i opened them up and took a look at them - they are all solid and well connected.

anything else i should look at??

thanks!!!