mot76

I noticed on '15 c300 that my left rear window will go down but will not raise with either window switch. If I use the key fob to raise the windows, it then closes.
What could be causing this and is there something I could do to reset it?

PaulR7

A short in the driver's side window switch, buy it off of here https://www.aliexpress.com/item/33041347830.html and have this guide handy to replace it.

mot76

Thanks for the info. Have you replaced yours? I'm curious to know if these replacements fit like the originals.

PaulR7

Yes I did, unfortunately I can't provide you with a pic as I traded the car in. The fit, feel and finish was on par with OEM if not better as the light appeared to shine through better during the night.

mot76

Sounds good to me. I’ll give it a try.
Thanks again.

mot76

When removing the switch, do you have to first remove the trim bezel or will they both come out together?
The video doesn't really specify that.

PaulR7

The trim comes out first from what I remember, it was a bit snug inside so I used a heat gun to make sure it doesn't break on its way out.

CaliBenzDriver

If you don't own a scanner buy one!

The door modules, buttons, windows and locks are starting to cause problems ... a scanner will save you time.

Aboid rain on these buttons, tiny circuit traces are easy to bridge with oxidation then they act up.