SL-Class (R129) 1990-2002: SL 280, SL 300, SL 320, SL 500, SL 600, SL 60 AMG

SL/R129: Window Down thingy

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Old Jul 13, 2014 | 03:02 PM
  #1  
deneals's Avatar
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From: St. Louis & Cincinnati
1997 SL500
Window Down thingy

The thing that makes the window go down slightly when the door is opened (on the drivers side) doesn’t work. Passenger side works as intended. At the same time that this stopped working, the warning buzzer (lights left on, key in ignition.etc) stopped working as well.

Has anyone had this problem that can relate a fix for me?

Thanks all!
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Old Jul 14, 2014 | 06:41 PM
  #2  
SRHsl600's Avatar
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From: Eastern Kansas
94 SL 600, 98 993, 89 XJS Conv., 85 Daimlier Princess 16 Hybrid Lincoln 16 Chevy crewcab
The locking system is the start place for the window "twitch" and it is a "halls sensor" thing that counts turns on the electrical motor that moves the window. Starting in 96? the locks, top controller used the sensor as a gateway for the systems to start their functions.
A window sync, in the owners manual is a coordinated movement of the window to full close and the holding the two switches for several seconds (5??)
If the door locks or door interior panel has been removed you may have a disconnect of the switch.
Good luck on your sort of the problem
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Old Jul 14, 2014 | 10:28 PM
  #3  
deneals's Avatar
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From: St. Louis & Cincinnati
1997 SL500
Thanks.... I'll check into that. I understand there was a change in how the system works @ '96 or '97
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