Adjustable Side Bolsters Not Working

dom55 · 07-17-2011, 06:41 PM

The adjustable side bolsters on both the driver's and passenger's seat have stopped working on my car. Has anyone else had this issue? Any ideas what the problem could be?

I searched the forums and did not see any posts regarding this issue. Any help is appreciated.

I will make an appointment with the dealer to have this looked at but would like to avoid a dealer visit if possible. They will probably just make it worse.

TIA

arter · 07-17-2011, 07:45 PM

For both to not work I would check the fuses. Your manual should tell you which one that is. Does the lumber support also move?

dom55 · 07-17-2011, 08:18 PM

The lumbar does not work either. My brother suggested checking the fuses as well, I will check the fuses and see if that fixes the problem. Thanks for the help.

laoha · 07-17-2011, 09:59 PM

I noticed the same issue on the delivery day. It's actually a user error. Just press the button more than a few seconds. The inflation might take a while. You should feel the deflation noticeably if you press the opposite button.

headshrinker · 07-18-2011, 02:03 PM

Hello all, I am newly registered on the forum. I have learned much from reading different threads. I had this exact problem, actually the only problem I have had with the M3 to date. Took it to the dealer twice, first time I was told it was the fuse; picked it up, drove it for a few miles and still the same situation. Took it back to the dealer and they looked more carefully. I was told it was analogous to an inflatable balloon that had popped. The piece was replaced; it now works perfectly and I have had no further problem. Service advisor was Maurice Bryant at Performance BMW in Chapel Hill and I'm sure he could tell you the specifics...I hope this helps and let me know if you have other questions! Take care!

mpritz · 09-12-2020, 02:53 PM

For whatever it is worth, I was having an issue whereby both the driver and passenger side inflatable lumbar and bolsters were not working (2010 E90 M3). I read a bunch of comments online and decided to dig down into the fuse issue since everything else with my seats was working just fine. I found a comment on another forum that said that fuse slot #20 was the fuse to check. Just like the other commenter who said there wasn't even a fuse in #20, mine was also empty as well. I went down to autozone and bought 5 10 amp microblade fuses for $3.99, popped one in the # 20 fuse slot, and voila!! my inflatable bolsters and lumbar support work perfectly now. Here is a link to anther post that includes a diagram of the fuse box that was, at least for my car, identical to what I had.

https://www.m3post.com/forums/showthread.php?t=321638

07-17-2011, 06:41 PM	#1
dom55 Lieutenant 33 Rep 407 Posts Drives: 2016 X5M Join Date: Jun 2007 Location: Westchester, NY iTrader: (4)	Adjustable Side Bolsters Not Working The adjustable side bolsters on both the driver's and passenger's seat have stopped working on my car. Has anyone else had this issue? Any ideas what the problem could be? I searched the forums and did not see any posts regarding this issue. Any help is appreciated. I will make an appointment with the dealer to have this looked at but would like to avoid a dealer visit if possible. They will probably just make it worse. TIA __________________ 2016 X5M Silverstone on Silverstone
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07-17-2011, 07:45 PM	#2
arter collecting toys 41 Rep 810 Posts Drives: M3 MCB Join Date: May 2008 Location: rochester, ny iTrader: (1)	For both to not work I would check the fuses. Your manual should tell you which one that is. Does the lumber support also move? __________________ 2011 e92 M3 Monte Carlo Blue ESS 535 - gone but not forgotten 2015 cayman GTS - new toy 2006 SLK 55 AMG sold
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07-17-2011, 08:18 PM	#3
dom55 Lieutenant 33 Rep 407 Posts Drives: 2016 X5M Join Date: Jun 2007 Location: Westchester, NY iTrader: (4)	The lumbar does not work either. My brother suggested checking the fuses as well, I will check the fuses and see if that fixes the problem. Thanks for the help. __________________ 2016 X5M Silverstone on Silverstone
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07-17-2011, 09:59 PM	#4
laoha New Member 0 Rep 14 Posts Drives: 2011.75 E92 M3 6MT SSII FR Join Date: May 2011 Location: WA iTrader: (0)	I noticed the same issue on the delivery day. It's actually a user error. Just press the button more than a few seconds. The inflation might take a while. You should feel the deflation noticeably if you press the opposite button.
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07-18-2011, 02:03 PM	#5
headshrinker New Member 0 Rep 16 Posts Drives: 2011 M3, 2008 Z4MC Join Date: Jul 2011 Location: Columbia SC iTrader: (0)	seat bolster Hello all, I am newly registered on the forum. I have learned much from reading different threads. I had this exact problem, actually the only problem I have had with the M3 to date. Took it to the dealer twice, first time I was told it was the fuse; picked it up, drove it for a few miles and still the same situation. Took it back to the dealer and they looked more carefully. I was told it was analogous to an inflatable balloon that had popped. The piece was replaced; it now works perfectly and I have had no further problem. Service advisor was Maurice Bryant at Performance BMW in Chapel Hill and I'm sure he could tell you the specifics...I hope this helps and let me know if you have other questions! Take care!
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09-12-2020, 02:53 PM	#6
mpritz New Member 5 Rep 15 Posts Drives: 2010 E90 M3 Join Date: May 2016 Location: Arlington, VA iTrader: (0)	Problem with Inflatable Lumbar and Bolsters For whatever it is worth, I was having an issue whereby both the driver and passenger side inflatable lumbar and bolsters were not working (2010 E90 M3). I read a bunch of comments online and decided to dig down into the fuse issue since everything else with my seats was working just fine. I found a comment on another forum that said that fuse slot #20 was the fuse to check. Just like the other commenter who said there wasn't even a fuse in #20, mine was also empty as well. I went down to autozone and bought 5 10 amp microblade fuses for $3.99, popped one in the # 20 fuse slot, and voila!! my inflatable bolsters and lumbar support work perfectly now. Here is a link to anther post that includes a diagram of the fuse box that was, at least for my car, identical to what I had. https://www.m3post.com/forums/showthread.php?t=321638
	Appreciate 0 Quote