Intermitant windows
 

Hi World,

I am havin a weird problem that I dont really understand.

My electric driver side window fails on me every day in the middle of the day and comes back to life sometime in the evening.

Assuming that these vehicles (79 300d) are not equiped with a "how to pain me the most in my day sensor". I have to assume that this issue is related to the heat of the day.

If i were to make further assumptions I would assume that the issue is in the switching mechnisim and not the motor. . .but any guidence and suggestions would be grand.

J

PS I know what assuming does also!!

The central lock in my right front door won't open if the car has been sitting in the sun for a while.. Heat does strange things to a car.

I am not familiar with the '79 300D. But one of my power windows also only worked when it felt like it.
I replaced the switch in the center console and the problem dissapeared.

On a w124 you can lift the wood off of the center console by pulling up the rear end of the wood piece. Then you can simply pull the window switches out of their sockets.
You can try switching them around to determine if one of them is bad. Very easy.

Freestyler