Air suspension issues

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Kor_JeongYeon

Junior Member
Joined
Dec 19, 2024
Posts
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Location
South Korea
Ram Year
2015
Engine
Hemi 5.7
Hello.
I would like to ask for help regarding Ayrsus.

1. Rear air suspension slumped on both sides after overnight parking
2. Changing air suspension height while driving changes later after cooling down please wait alarm occurs

The current symptom is this situation.

Would it be better to replace the back airbag?
Or where will it leak?
And can I check the remaining nitrogen amount through alfaobd?

I would like to ask for your help.

- 2015 Rebel
 

jimmylangley

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Feb 23, 2024
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Location
Kentucky
Ram Year
2017
Engine
5.7 Hemi
Do you ever hear air intake kick on? It should be right behind the right tail light. The system is closed but it can lose nitrogen over time and top off the system with air using the intake. If its doing this then you likely have no nitrogen left in the system.

As far as the slumping, you can spray the bag/lines with soapy water to look for a leak. More often, its in the valve body. Might be an exhaust valve stuck in the open position.
 

PaleFlyer

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Jan 1, 2022
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Location
Charlotte NC
Ram Year
2018
Engine
Hemi 5.7
I haven't seen anything saying there is ANY indication of the nitrogen/"ambient" air volume, but remember, even if there was, ambient air is ~70% Nitrogen anyway.

I'd say if your truck is more than 2-3 years old, you probably at best are 50% N2, and 50% "ambient" air.

I had an issue where my FRONT was bottomed out on my 18, but that seemed to be related to my battery dying, as I did end up having to replace it a couple months later (and like 2 days later the battery was dead...)

Looking at the system, you have a "potentiometer" at each wheel to clock how high/low your wheel is currently, a POLY hose running down the frame, and flipping to the muffler side as it passes the muffler, before flipping back to the other side, it is in about 3/4" of insulation, but... and the solenoid/compressor at the back passenger side, as well as the 2 tanks above the spare tire. There is also some information hidden on here that I was looking at 2+ years ago to add an inline filter/dryer, as a lot of us have tracked air suspension issues in the cold, likely due to moisture in the system, and freezing.

I spent too much time under my ram a couple months ago trying to figure out why I was nose down the whole time for days.

Pulled fuses/relays... ended up just driving with the air ride relay in my center console cubby for a couple days, and suddenly it started working again, and has been fine since.
 
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