2010GL550

My wife and I have a 2010 GL550 and recently the multi-contour seat function stopped working on both the driver and passenger seats. I know, I know the obvious answer is a fuse, but it checks out fine (assuming it is the fuse in location 66 in the rear cargo area).


What else could this be? I also checked fuses 27 & 28 and they are both fine too. If it were just one seat, I'd suspect wiring/motor/switch...but it is both seats.

2010GL550

Anybody? The wife is pestering me to find a solution.

islandbeef

Check codes?

and808

check fuses ?

WaveyKat

probably needs to be check out with the DAS..

2010GL550

Yep, so a trip to the Dealer. Will probably wait until needs another service.


It's NOT fuses and there are no fault codes.

2010GL550

I could REALLY use some help. So, just picked up the 550 from the Dealer. $380 for a new battery/labor, plus $500 for replacement rear door handle/labor. I opted NOT to do the multi-contour seat function repair, as I was quoted $750. They stated that the pneumatic pump has failed (one pump for both seats).


Where is this pump located? Several Internet searches come up with pump locations, but for different model MB (S class, E class, etc.).


I really want to get this fixed but there's no way I'm spending another $750 to do it.

WaveyKat

did you Check the EPC?

also they change the door handle why? do you have keyless go?
My Driver Side Front & Rear Door is starting go dead..

2010GL550

What's EPC? Yes, the rear door handle would not lock and/or unlock the car. The part isn't that expensive but I hear it's a real PITA to replace.

WaveyKat

Epc is a service of Mercedes where you can look up parts and get the options that your car came with its a free service

http://epc.startekinfo.com/epc/

2010GL550

So we've been using the vehicle without the ability to adjust the multi-contour seats (yes I know, how terrible), but I'm back on my kick to get them fixed.


Can anyone tell me where the air compressor/pump is located?

srfrboy

I cannot tell you where it is located, but I can say that I am having the same issue.

2010GL550

Well, I think I have this problem beat!! It's definitely the vacuum/air pump. It's located in the rear compartment, behind the first aid kit. It's amazing how expensive, yet how cheap the pump actually looks. Gets voltage just fine, but no motor rotation. Hit it with a screw driver handle and away it goes. Most placed wanted $250-325 for a replacement, but I found a rebuilt one for $95. It should be here within a few days. It will be a super easy fix, once the pump unit shows up (less than ten minutes).


The dealer wanted over $700 for this repair...unbelievable!

2010GL550

It's fixed!

Nacho82

Can you give me an idea where (web/vendor) you found the rebuilt pump? I recently got a GL that neither multifunction seat adjustment works on. Probably worth a look at the compressor if that was as simple of a fix for you.

mbgl350x166

I have the same problem except for the model is x166 (2012 and after) don't know if they changed the pump location. Can you post a picture of the pump location?

2010GL550

In the back LH side of the vehicle, behind the first aid kit:

2010GL550

2010GL550

This is going to sound silly, but I assure you it will work. To troubleshoot, remove the pump from the insulated padding, but leave it plugged in. With the ignition turned on, have someone sit in one of the front seats and hold down one of the multi-contour buttons.


Give the pump housing a good "pop" (I used a screwdriver handle). Not too hard, but hard enough. I am quite certain you will then hear the motor/pump start working. It seems that the pump motors go bad very frequently. This is just to test to make certain it's the pump. This will NOT be a long-term fix, lol.


I am under the impression that the part number for the pump is the same for quite a few MB vehicles.

2010GL550

The receipt I posted was at a discount, as the initial pump I received stopped working in about 90-days. The second unit has been working perfectly.

YodaSyrup

Thanks for the follow-up post on the fix!

LukasN

Dear all, thank you for the posts. Thanks to that I was able to locate the problem and fix it.

I repaired the pump motor myself.

I disassembled the pump, opened the engine, cleaned the commutator and brushes with a fine sandpaper.
Also cleaned the commutator gaps with needle.
Then all put together and pump just works fine.

All went really easily.

SPT260

I just looked a car i was thinking of buy, with the same issue.

mbgl350x166

Mine turned out to be some sort of electric short circuit because the cap from the head light was off and water was getting in. It was also giving me light errors on the dash. Once I replaced the light and put the cap the seats worked and have been working fine since.

amitosr

Thank you.!!!!!!!! Sooooo much.!!!!!

you have no idea you have really made my day..!!!!

$0 spent..

1. knocked the air pump with a screwdriver after turning the ignition on- motor started and stopped.

2. so I knew it is the air pump.

3. I opened the black and gray compartment and disconnected the motor.

4. I did open the motor up with the screwdriver to pull the magnet core out.

5. I did clean the carbon deposit on the commutator (the copper piece on the core with sand paper)

6. I also used a brush to remove any other deposits or copper powder or carbon graphite powder left on that copper piece and the gaps within commutator.

7. I also cleaned a little too magnet squares with sandpaper and toothbrush.

8. Reinstalled it back.








amazingly easy to do.!!