Wagon Suspension
Thread Starter
Junior Member
Joined: Nov 2014
Posts: 57
Likes: 3
From: Savannah, GA/Mystic/CT
2009 E350 4matic wagon, 1980 450SL, 2011 GL450
Wagon Suspension
I have owned a 2009 E350 4matic wagon for about 4 years. Purchased with 130k miles now 157k miles. The rear end has always sunken down evenly after a week or so and now sometimes drops overnight. Always evenly and always back up with 1.5 minutes (or less). Are the bags leaking, a hose leaking or a valve? Replace everything or convert to coil springs?
MBWorld Fanatic!
Joined: May 2021
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From: US
2008 E350, 2012 ML350, 2014 E350, 2015 ML350
Have you scanned the car for any codes?
I would approach the issue with a budget in mind. Check for leaks:
1 - If it is a hose or a valve , just fix or replace. Done
2 - If it is an airbag, then you need to work out the total replacement cost: "how many bags + labor + unknown parts when replacing" vs "coil conversion plus unknowns"
It is always best to check for leaks and find the root cause, estimate cost and weight future costs vs convenience. You gain something with coil springs as well as you loose something --> your call
I would approach the issue with a budget in mind. Check for leaks:
1 - If it is a hose or a valve , just fix or replace. Done
2 - If it is an airbag, then you need to work out the total replacement cost: "how many bags + labor + unknown parts when replacing" vs "coil conversion plus unknowns"
It is always best to check for leaks and find the root cause, estimate cost and weight future costs vs convenience. You gain something with coil springs as well as you loose something --> your call
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From: Orbiting the planet
This place is a joke.
Senior Member
Joined: Jul 2013
Posts: 401
Likes: 44
From: Cedar Rapids, IA
2009 e550 4Matic
I've also got them in the rear of my e550. They don't leak, and they work great. As long as you don't need the adjustable suspension, as mine has had a bad resistor since nearly new.
Member
Joined: Apr 2018
Posts: 205
Likes: 15
From: Bayside, NY
06 E500 4Matic Wagon
Unrelated to the airbag system, I had the Arnott coil over set for my wagon and the rear springs sagged 3". The fronts were fine but I could not get the car to be level. The "Engineering" team attempted to help resolve the problem but then ghosted me after I sent pics of the issue. Arnott makes decent airbag replacements but, DO NOT buy the coil kit. BC Racing FTW.
Last edited by Onyxthecat; Jun 22, 2023 at 03:45 PM.
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MBWorld Fanatic!
Joined: May 2017
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C320
Unrelated to the airbag system, I had the Arnott coil over set for my wagon and the rear springs sagged 3". The fronts were fine but I could not get the car to be level. The "Engineering" team attempted to help resolve the problem but then ghosted me after I sent pics of the issue. Arnott makes decent airbag replacements but, DO NOT buy the coil kit. BC Racing FTW.
Do not buy Arnott.
Last edited by tjts1; Jun 22, 2023 at 09:06 PM.
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