GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

2009 GL550 airmatic problems

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Old 04-05-2016, 11:10 AM
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2009 GL550 airmatic problems

Hi guys. I tried to serch for info on my problem but could not find anything. Maybe you can help me. A few days ago my 2 years old son was playing in the car by pressing all the buttons in the car. The next day when i started the car it was stuck in spot mode and the ride was very firm and uncomfortabile. The height was good and when the height control button was pressed the car would rise and lower as it supposed to. So the pump was working. I checked fuses (32, 53, 107, 108) and all seemed to be fine. I pulled the airmatic control relay (green) and tried to replace it with the yellow from the right corner because it had the same configuration. Something wrong happend and now my engine stalls all the time when i turn on the pump. If i drive it, when it goes above 30mph the pump tries to kick in and the engine stalls again. Please help!
Old 04-09-2016, 02:38 AM
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Thats messed up
Old 04-09-2016, 10:07 AM
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Have you put the relays back EXACTLY where they were before you replaced them? I think you have TWO different problems. Stuck in sport mode and now engine stalling. I'd be the stalling issue is something you did when swapping the relays.


As far as the sport mode goes, just leave it for now. Get the other issue fixed first.
Old 04-09-2016, 11:01 AM
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Originally Posted by 2010GL550
Have you put the relays back EXACTLY where they were before you replaced them? I think you have TWO different problems. Stuck in sport mode and now engine stalling. I'd be the stalling issue is something you did when swapping the relays.


As far as the sport mode goes, just leave it for now. Get the other issue fixed first.
I put the relays back the way it is suppose to be. I even bought new ones from the dealer and replaced the ones i pulled out first. The problem still there. I think i figured out the problem with the sport/comfort mode. I found 2 out of 3 wires cut from left front acceleration sensor. wires are cut so short from the harness. I will try to solder to see what happens.

Last edited by Vadimaparatu; 04-09-2016 at 11:34 AM.

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