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2018 drivers power lumbar support

4K views 4 replies 3 participants last post by  arudlang 
#1 ·
Hey everyone the other day I was driving and didn’t notice my wallet feel from my pocket and was stuck on the lumbar support button and soon I felt and heard a subtle pop and now the bottom part of the lumbar support doesn’t work. Is there a fix for this or do I have to take it to the stealership?
 
#2 ·
It kinda sounds like it popped the drive belt (I assume there is a belt for this) from the servo motor. Can you till hear the servo working if you press the button? If you can find a way to reach or access the motor, you should be able to pop it in. Otherwise dealer.


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#3 ·
See I was under the impression that the lumbar was an inflated rubber bag/pillow of sorts, pumped full of air. I hear what I think is a pump when I want the lumbar increased, when I decrease the lumbar there is no sound which is consistent with a valve simply opening and letting out some air. I don't know for sure though. If it is an air-filled bag it would make sense that it would literally "pop" when over-pressurized.

I have no idea if warranty would cover that or not but I don't know what your odds are of fixing yourself either. I guess you'd have to replace that bag somehow? Which would involve taking the seat material apart? That does not sound like a good time. I would bring it to the dealer.
 
#4 ·
See I was under the impression that the lumbar was an inflated rubber bag/pillow of sorts, pumped full of air. I hear what I think is a pump when I want the lumbar increased, when I decrease the lumbar there is no sound which is consistent with a valve simply opening and letting out some air. I don't know for sure though. If it is an air-filled bag it would make sense that it would literally "pop" when over-pressurized.



I have no idea if warranty would cover that or not but I don't know what your odds are of fixing yourself either. I guess you'd have to replace that bag somehow? Which would involve taking the seat material apart? That does not sound like a good time. I would bring it to the dealer.


Hmm I never considered it to be an air filled bag. That is a possibility for sure. But if that is the case, wouldn’t the lumbar support “settings” change with the ambient temperature, since the gas would expand or contract with changing temperatures?


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#5 ·
Tripod said:
But if that is the case, wouldn’t the lumbar support “settings” change with the ambient temperature, since the gas would expand or contract with changing temperatures?
Only very slightly, I would think? I'm imagining its generally not more than 1, maybe 2 PSI in there and then the % change that comes with temperature change would be very low. I'm just guessing out loud though, I really don't know for sure.
 
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