Lumber adjust not working - MBWorld.org Forums

Jun 30, 2016 | 10:37 AM

Firenza

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Member

Joined: Jul 2002

Posts: 89

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From: Taiwan

E350

Lumbar adjust not working

Just noticed my driver side power lumbar adjust is not working at all. It's not inflating or deflating air, nor moving up or down. But I can hear the motor making a very short sound (1 sec.) each time I press up or down.
What could be the main cause for this and how to disassemble the driver seat to see the lumbar control unit located ?
Thanks for helping....

Last edited by Firenza; Jul 1, 2016 at 02:47 AM.

Jun 30, 2016 | 04:32 PM

homeofstone

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Joined: Oct 2011

Posts: 1,084

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From: Athens, GA USA

2011 E63, 2011 Hyundai Genesis 4.6 v8, 2013 GMC Denali XL, 1965 Ford Mustang, 2005 Merc. E500

I think you mean Lumbar

Jul 1, 2016 | 02:49 AM

Firenza

Thread Starter

Member

Joined: Jul 2002

Posts: 89

Likes: 4

From: Taiwan

E350

Quote:

Originally Posted by Plutoe

Post the fault code!!

You do get a fault code for lumbar adjust malfunction ?

Jul 1, 2016 | 09:53 AM

RA72825

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Joined: Oct 2005

Posts: 4,957

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I don't think you would get a fault code for that. You would need to hook up to SDS to diagnose with codes. Your bladder may have expired with a pin hole, or the pump is seized up somehow.

Jul 1, 2016 | 12:17 PM

konigstiger

Out Of Control!!

Joined: Jul 2003

Posts: 15,901

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From: North Scottsdale, AZ

'71 Pinto

May be permanently installed in the backrest padding and cannot be replaced
separately.

Attached Files

front seat back lining.pdf (170.7 KB, 191 views)

front seat.pdf (306.1 KB, 192 views)

Last edited by konigstiger; Jul 1, 2016 at 12:19 PM.

Apr 14, 2019 | 12:32 PM

smokinb

Junior Member

Joined: Aug 2016

Posts: 20

Likes: 0

From: Charlotte, NC

2004 S430, 2011 E350 Cabriolet, 2010 GL450

My 2011 lumbar has dials on right side of driver seat. These do nothing.

How can I diagnose the issue without taking it to the dealer for code read?

check fuse?
remove seat to check something?

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