Thigh support repair

dadysev · 03-28-2016, 02:07 PM

Wow. What a PITA. Took the car out of winter storage and tried to use they the thigh support. Could hear the motor but no movement . I could move it back and forth freely.
Of course a broken gear that the dealer doesn't sell. You have to buy the complete motor assembly 250$+ !
I'm trying Jb weld to see what happens but ordering one from eBay.

https://www.ebay.ca/ulk/itm/121877433238

Just to add. I think what can break this is added force, so if you are detailing, working on the car, etc. Don't put any extra lateral force on it. It all rest on that plastic gear !

I've attached the little gear glued.

TopQuark · 03-28-2016, 09:41 PM

20 sold in eBay! It must be a common problem.

marmit2017 · 02-13-2019, 10:27 AM

Did it work? Do u have details on how to detach the thigh support? Do u have to remove the entire seat?

harris69 · 02-18-2019, 05:46 AM

I have the same issue on passenger side that I need to address. There are several YouTube videos (one guy explains it real good on a 7-series) that shows how to replace the gear. As the OP pointed out it is plastic gear that breaks with any amount of weight on the thigh support, and is a real PAIN. Gear sells for $15-20, but the time it takes to replace is probably 2 hours easy.

03-28-2016, 02:07 PM	#1
dadysev Captain 169 Rep 687 Posts Drives: Man Join Date: Jul 2013 Location: Toronto, Canada iTrader: (0)	Wow. What a PITA. Took the car out of winter storage and tried to use they the thigh support. Could hear the motor but no movement . I could move it back and forth freely. Of course a broken gear that the dealer doesn't sell. You have to buy the complete motor assembly 250$+ ! I'm trying Jb weld to see what happens but ordering one from eBay. https://www.ebay.ca/ulk/itm/121877433238 Just to add. I think what can break this is added force, so if you are detailing, working on the car, etc. Don't put any extra lateral force on it. It all rest on that plastic gear ! I've attached the little gear glued. Attached Images __________________ website
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03-28-2016, 09:41 PM	#2
TopQuark Private 7 Rep 54 Posts Drives: 528i Join Date: Feb 2016 Location: Cupertino iTrader: (1)	20 sold in eBay! It must be a common problem.
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02-13-2019, 10:27 AM	#3
marmit2017 Captain 106 Rep 808 Posts Drives: 11 535i 13 328i xDrive Join Date: Mar 2017 Location: TN iTrader: (0)	Did it work? Do u have details on how to detach the thigh support? Do u have to remove the entire seat?
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02-18-2019, 05:46 AM	#4
harris69 Lieutenant 64 Rep 431 Posts Drives: 1997 M3/4, 1984 533i,1997 328i Join Date: Jul 2010 Location: Asheville, NC iTrader: (0)	I have the same issue on passenger side that I need to address. There are several YouTube videos (one guy explains it real good on a 7-series) that shows how to replace the gear. As the OP pointed out it is plastic gear that breaks with any amount of weight on the thigh support, and is a real PAIN. Gear sells for $15-20, but the time it takes to replace is probably 2 hours easy.
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