2017 E400 air suspension question
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2017 E400 air suspension question
Not new to MB but new to forums, have searched quite a bit to find answer before I waste anyone’s time as well.
I have a 2017 E400 wagon and with the colder weather (well below freezing) I am waking up to the rear seemingly completely deflated and resting on the bump stops, finally got the warning light today.
Compressor still works and gets rear inflated but want to address before issue compounds. My question, the E400 wagon only has air bags in the rear while using air shocks up front, I have found a self leveling air valve block for the rear with three ports but also an air block valve with six ports, does mine have both? I am going to start with the air valve block assuming bad O rings/corrosion causing the leak and work from there, but want to ensure I am addressing the proper one or both if I have two.
I have a 2017 E400 wagon and with the colder weather (well below freezing) I am waking up to the rear seemingly completely deflated and resting on the bump stops, finally got the warning light today.
Compressor still works and gets rear inflated but want to address before issue compounds. My question, the E400 wagon only has air bags in the rear while using air shocks up front, I have found a self leveling air valve block for the rear with three ports but also an air block valve with six ports, does mine have both? I am going to start with the air valve block assuming bad O rings/corrosion causing the leak and work from there, but want to ensure I am addressing the proper one or both if I have two.
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From: Indianapolis, IN
2017 Mercedes E400 Wagon
Do you have the leveling button on your center console or on the dash in a row of buttons to the left of the steering wheel (on dash)?
If you have the button, you have 4 wheel air suspension.
If you have the button, you have 4 wheel air suspension.
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No leveling button, just the rear axle leveling control. Paid for Alldata, appears I would need the Arnott VB-3499 which has one inlet two outlets, even though the Mercedes parts site lists the one that is for cars with Airmatic suspension, one inlet five outlets.
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2017 M-B E400 4Matic Wagon AMG-Line
How do you know it's the valve block? Could be that or
A slow leak in an airbag (or both)
A hole in the line
A bad compressor
Possibly a sensor
When mine did that, it was the compressor.
A slow leak in an airbag (or both)
A hole in the line
A bad compressor
Possibly a sensor
When mine did that, it was the compressor.
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Trying to back into the culprit starting with most logical. Holds air in cooler and warm weather, will go down to bump stops overnight when it’s sub 15-20 degrees. Compressor works, immediately inflates when vehicle is started and there is no standby to my knowledge when car is off. So that would leave dry rotted O rings, corrosion in the air valve block, both bags have holes in them. Later being least likely, although that could certainly be it, but I’d doubt it.
Was really looking to confirm proper air valve block as replacing that in turn solves a few O rings and if corrosion if present due to condensation in current unit.
Was really looking to confirm proper air valve block as replacing that in turn solves a few O rings and if corrosion if present due to condensation in current unit.
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Joined: Dec 2023
Posts: 170
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2017 M-B E400 4Matic Wagon AMG-Line
Trying to back into the culprit starting with most logical. Holds air in cooler and warm weather, will go down to bump stops overnight when it’s sub 15-20 degrees. Compressor works, immediately inflates when vehicle is started and there is no standby to my knowledge when car is off. So that would leave dry rotted O rings, corrosion in the air valve block, both bags have holes in them. Later being least likely, although that could certainly be it, but I’d doubt it.
Was really looking to confirm proper air valve block as replacing that in turn solves a few O rings and if corrosion if present due to condensation in current unit.
Was really looking to confirm proper air valve block as replacing that in turn solves a few O rings and if corrosion if present due to condensation in current unit.
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Of course it does, but if I end up needing new bags, I’m going to take the wheel off and replace the block while I’m at it…I’ll wait on the compressor though, save a $1,000 and have another excuse to get out in the garage when it kicks the bucket.
Using that workflow, I’ll replace block/filter/relay first, problem solved, great. If not, I’ll go after the bags, and if I’m still stuck, time to do compressor.
I really just wanted to know if anyone has done non-Airmatic wagon before and if the three valve block is correct, Alldata says it is, MB website a bit murkier.
Using that workflow, I’ll replace block/filter/relay first, problem solved, great. If not, I’ll go after the bags, and if I’m still stuck, time to do compressor.
I really just wanted to know if anyone has done non-Airmatic wagon before and if the three valve block is correct, Alldata says it is, MB website a bit murkier.
