2019 GLS550 - front seat removal for pneumatic air leak
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2019 GLS550
2019 GLS550 - front seat removal for pneumatic air leak
Good day,
Does anyone have a link to a good guide on removing / re-installing the front seats in the GLS550? I am tracking an air leak that is causing the pneumatic features to not function. I repaired one leak in the driver's seat and another sounds to be coming from under the seat. I'm not short nor skin and bones so removing the seat seems the easiest way handle tracking down and repairing the leak(s). It amazes me at just how brittle some of the air lines are on a 6-7 year old car.
Does anyone have a link to a good guide on removing / re-installing the front seats in the GLS550? I am tracking an air leak that is causing the pneumatic features to not function. I repaired one leak in the driver's seat and another sounds to be coming from under the seat. I'm not short nor skin and bones so removing the seat seems the easiest way handle tracking down and repairing the leak(s). It amazes me at just how brittle some of the air lines are on a 6-7 year old car.
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From: Fleriduh
W212 E63S Wagon - GSL580 - E63 - E350 - C300
I have found (more than once) you DO NOT NEED TO REMOVE THE SEAT.
There are two tubes that go from the pump, in my case a black and blue. One of the two was all cracked to hell (I forget what one). They are wrapped together in a black fabric tape. What I did was simply tape new tube to the old (two lengths) and pull them towards the front of the car. You can cut the fittings from the old tubes with a razor and with a tiny bit of heat get them into the new tubes.
There are two tubes that go from the pump, in my case a black and blue. One of the two was all cracked to hell (I forget what one). They are wrapped together in a black fabric tape. What I did was simply tape new tube to the old (two lengths) and pull them towards the front of the car. You can cut the fittings from the old tubes with a razor and with a tiny bit of heat get them into the new tubes.
Thread Starter
Newbie
Joined: Jun 2025
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2019 GLS550
I have found (more than once) you DO NOT NEED TO REMOVE THE SEAT.
There are two tubes that go from the pump, in my case a black and blue. One of the two was all cracked to hell (I forget what one). They are wrapped together in a black fabric tape. What I did was simply tape new tube to the old (two lengths) and pull them towards the front of the car. You can cut the fittings from the old tubes with a razor and with a tiny bit of heat get them into the new tubes.
https://www.amazon.com/dp/B07RJ1BYKV...fed_asin_title
There are two tubes that go from the pump, in my case a black and blue. One of the two was all cracked to hell (I forget what one). They are wrapped together in a black fabric tape. What I did was simply tape new tube to the old (two lengths) and pull them towards the front of the car. You can cut the fittings from the old tubes with a razor and with a tiny bit of heat get them into the new tubes.
https://www.amazon.com/dp/B07RJ1BYKV...fed_asin_title
That's a rather less difficult solution to implement! Would these be the same small blue and black tubes the run into the seat back? The black one, that appears to go into a filter or air dryer, is the one I had just spliced a new segment into. Was 30' length cut in half, for 2 15' lengths, sufficient or would you advise the 50' length option?
Last edited by Chris0212; Jun 4, 2025 at 09:40 AM.
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From: Fleriduh
W212 E63S Wagon - GSL580 - E63 - E350 - C300
That's a rather less difficult solution to implement! Would these be the same small blue and black tubes the run into the seat back? The black one, that appears to go into a filter or air dryer, is the one I had just spliced a new segment into. Was 30' length cut in half, for 2 15' lengths, sufficient or would you advise the 50' length option?
The kid I had linked to would do 3-4 cars.
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From: Fleriduh
W212 E63S Wagon - GSL580 - E63 - E350 - C300
it's actually quite simple to do. The first time I did a seat I unbolted it so I can lean it back. The second time and further I don't even unbolt the seat.
all you really need to be able to do is get your hands in there so your fingers can grip the hoses. That said if you look like one of the characters on Wall-E I am not certain you can get in there
all you really need to be able to do is get your hands in there so your fingers can grip the hoses. That said if you look like one of the characters on Wall-E I am not certain you can get in there
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2019 GLS550
it's actually quite simple to do. The first time I did a seat I unbolted it so I can lean it back. The second time and further I don't even unbolt the seat.
all you really need to be able to do is get your hands in there so your fingers can grip the hoses. That said if you look like one of the characters on Wall-E I am not certain you can get in there
all you really need to be able to do is get your hands in there so your fingers can grip the hoses. That said if you look like one of the characters on Wall-E I am not certain you can get in there
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2017 GLS 550
Hmm.. I have noticed that the driver's seat lumbar, under-leg, side bolsters and the massage function all stopped working a few months ago. I'm not hearing any obvious leaks but I'm guessing that's what it has to be. Do you get at the hoses by just taking the back of the seat apart?
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From: Fleriduh
W212 E63S Wagon - GSL580 - E63 - E350 - C300
Hmm.. I have noticed that the driver's seat lumbar, under-leg, side bolsters and the massage function all stopped working a few months ago. I'm not hearing any obvious leaks but I'm guessing that's what it has to be. Do you get at the hoses by just taking the back of the seat apart?
I have never heard a hiss. My tubes (three seats now) had such big splits that it was just an open hose. No hiss at all.
And yes, the back of the seat (remove bolts - push DOWN to remove the cover). Depending on the model remove the storage under the front of the seat. Possibly remove the seat bolts and just lean it back if you need more clearance.
Thread Starter
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2019 GLS550
Hmm.. I have noticed that the driver's seat lumbar, under-leg, side bolsters and the massage function all stopped working a few months ago. I'm not hearing any obvious leaks but I'm guessing that's what it has to be. Do you get at the hoses by just taking the back of the seat apart?
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From: Fleriduh
W212 E63S Wagon - GSL580 - E63 - E350 - C300
Nope. it is all contained under the seats. I have done a few seats, never had to change the lines to the tank.
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well that’s not fun. Mine stopped working out of the blue after a 2 hour trip, but I get a loud hiss and BOTH front seats have stopped working. I thought it may be a connector at the pump but now I’m worried. Guess it’s time to dive in and start troubleshooting! Where is the pump buried on these? Back left like the cars?
