GL Class (X166) 2013-2015 after facelift became GLS (X166)

Right Rear Vent Motor

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Old Sep 6, 2023 | 11:20 PM
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LIRS6's Avatar
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From: Long Island
'14 GL550 , '79 911SC
Right Rear Vent Motor

Can’t close the right rear vent window. presume motor is shot - not a peep out of it when engaging the open/close button, I bought a replacement motor on EBay, now I need instructions on how to get into that area. Where to find?

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Old Sep 7, 2023 | 12:17 PM
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oldmangrimes's Avatar
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From: Gresham, OR
GL450
When you do get to it, I would recommend checking the voltage at the electrical connector before you replace it. There's always a chance the switch itself is bad, or the wiring, etc. so I would recommend a quick check to make sure the voltage at the motor changes when the switch is pressed.

As for the procedure, this nice tutorial shows how to remove the rear side panels to get to the rear strut tower bolts. The motor for the rear vent window may be shown in one of the pictures.
https://mbworld.org/forums/gl-class-...-tutorial.html

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Old Sep 7, 2023 | 05:28 PM
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LIRS6's Avatar
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From: Long Island
'14 GL550 , '79 911SC
Update

Originally Posted by oldmangrimes
When you do get to it, I would recommend checking the voltage at the electrical connector before you replace it. There's always a chance the switch itself is bad, or the wiring, etc. so I would recommend a quick check to make sure the voltage at the motor changes when the switch is pressed.

As for the procedure, this nice tutorial shows how to remove the rear side panels to get to the rear strut tower bolts. The motor for the rear vent window may be shown in one of the pictures.
https://mbworld.org/forums/gl-class-...-tutorial.html
great advice, and thanks VM for the link!

Update: magically my vent window has closed. I had other car windows open, and used the “close all” feature on my key fob, and the vent closed. Mind you I had tried this countless times already without result. I am assuming a poor connection??

Last edited by LIRS6; Oct 2, 2023 at 08:37 AM. Reason: Update
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