Driver's window s-l-o-w to wind: 500SL

[adaco]

1990 500SL. My driver's side window has just begun to wind up excruciatingly slowly, then stop short about 2/3 of the way up. Winds down, but slowly also. This problem has just started to show up.

Does this generally indicate a fault with the window regulator or the window motor? Is there any way of determining if it's one or the other before I trot off to the dealer?

Thanks

Barrie

 

[television]

Only by working out if the glass is too tight in the channels Barrie, does it go up or down with some assistance

 

[adaco]

Malcolm:

Not sure if that was a question. But, yes, it will go up beyond the "stopping" area with assistance from me.

Barrie

 

[television]

Malcolm:

Not sure if that was a question. But, yes, it will go up beyond the "stopping" area with assistance from me.

Barrie

OK most electric motors either work or they do not, try and adjust or lubricate the window channels.

you can see all by opening the link and then the other parts

http://www.detali.ru/cat/oem_mb1.asp?TP=1&F=129066&M=119.960&GA=722.353&CT=F&Cat=515&SID=72

 

[rayhennig]

Electric motors on the way out ...

I would respectfully suggest, Telly, that motors do sort or peter out - my wiper motor got slower and hotter on the journey home from Germany over the central plateau here in France during a blizzard.

I have a similar, reluctant and slow window motor on the front door of the 300ce - similar to the SL, there's no frame and I feel the resistence to the glass's movement is greater than a "framed" window you find in the saloon.

I would recommend getting a new motor and ensuring that the assemblies are well cleaned and lubricated during installation. Try some silicon lubricant of the glass guide rails.

Good luck.

RayH

 

[Parrot of Doom]

Get a tin of silicone lubricant spray, and spray the channels on the doorframe. If that doesn't work, time to pull the door card off