GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

Power seat drivers side stuck on one side

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Old 02-07-2017 | 01:31 PM
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Rob Rose's Avatar
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2007 Mercedes GL 450
Power seat drivers side stuck on one side

My drivers side power seat was making some noise and would occasionally stop moving on the left side. I could move it up and down and jigger with it to get it going, now the left side is stuck, right side moves fine. Any suggestions?
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Old 02-07-2017 | 03:15 PM
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'08 GL 320 CDI
Originally Posted by Rob Rose
My drivers side power seat was making some noise and would occasionally stop moving on the left side. I could move it up and down and jigger with it to get it going, now the left side is stuck, right side moves fine. Any suggestions?
Is that sort of like "getting jiggy with it"? Or do you mean "jiggle" it?

Look for obstructions. Unseat/reseat all electrical connections.
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Prerna (04-01-2019), Rob Rose (02-07-2017)
Old 02-07-2017 | 03:41 PM
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A machine or vehicle with a part that rocks or moves to and fro, e.g. a jigsaw:
‘they invented a jigger that pulls nets under the ice’

Oxford Dictionary
Old 02-07-2017 | 04:19 PM
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Ah, yes, but a "jigger" is a thing/noun. To use it like "jigger with it" references an action/verb, which a jigger is not.

Another "real" answer... possibly a bad switch?
Old 02-07-2017 | 05:12 PM
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Jigger is both a noun and a verb. More commonly a noun. But to jigger, a verb. Jerking something back and forth is jiggering.

https://en.wiktionary.org/wiki/jigger

I think if it were a switch it wouldn't move at all? I'll try disconnecting and reconnecting things.Meanwhile I am pouring a few jiggers of gin while I jigger with the problem.
Old 02-07-2017 | 05:14 PM
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Verb[edit]
jigger (third-person singular simple present jiggers, present participle jiggering, simple past and past participle jiggered)

To alter or adjust, particularly in ways not originally intended.
You'll have to jigger it from the original specifications to get it to work.
(pottery) To use a jigger.
To move, send, or drive with a jerk; to jerk; also, to drive or send over with a jerk, as a golf ball.  [quotations ▼]

Exactly the word I meant for what I was doing to it
Old 02-07-2017 | 05:42 PM
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Interesting... I have never heard of jigger being used as a verb. I stand corrected! Well, truth be told, I'm actually sitting down right now...

Originally Posted by Rob Rose
Meanwhile I am pouring a few jiggers of gin
On that, I can agree 100% the FIRST time!

Yes, it could definitely be a switch. They can get "flaky" and the contacts may not always be making a good contact ("worn out" for lack of a better term). It can be from age, or even if something spilled on them.

I don't know enough about the specifics of the seat motor wiring, but if there are relays involved with it (as opposed to the switch being directly connected to the motor), it's also possible that the relay is old/flaky, as opposed to the actual switch. It depends on how much current the motor draws (compared to wire size and switch rating) as to whether a relay is used. Someone with more in-depth knowledge will have to help with that aspect, though.
Old 02-07-2017 | 08:45 PM
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Forgot to mention, although you probably already knew this...

If you're vewy, vewy quiet (I'm huntin' wabbits) and can still hear the motor running, when the seat isn't moving, then definitely look for obstructions. If no motor noise, an obstruction won't be the culrpit.
Old 04-01-2019 | 08:02 AM
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Same issue here with the front passenger seat. It happened after I loaded a large cupboard that put quite a bit of pressure on the seat... Will check for obstructions, although I have the impression it could as well be derailed somehow.

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