1989 Camry 4 door with power windows.

For the first time today, the driver's door window would not roll up on the driver's door master control. The other windows work fine at the individual doors and the master works fine for them, too.

The switch was loose at the beginning. I turned off the car, waited a few minutes, then the window worked and the switch was not loose.

Is there a quick fix, like spraying penetrating oil?

 

The switch was not loose after turning the car off?

Don't use penetrating oil. If using something use electrical contact cleaner such as CRC electrical cleaner. WalMart sells it.

 

Thanks.

I did NOT check whether the switch was loose when the car was turned off. Right now, the switch is snug with then engine off, but it worked fine yesterday. Will check for looseness with engine off next time.

Is there anything I should do at this point?

What are the causes?

 

Is the electrical plug loose in the switch, switch lever loose, switch loose in the switch holder, etc.

Remove the electrical plug and check the switch electrical pins for looseness. Check how the plug fits into the switch and the plug connectors fit into the switch pins.

 

Look at my issue which is similar, not identical and the feedback from toyomoho. This may provide some more help. Name is wdc123. Toyota Camry 200000 miles in title.