Skip the auto shop - Our mechanics make house calls

Symptoms of a Bad or Failing Air Suspension Dryer Assembly

air suspension

Bad or Failing Air Suspension Dryer Assembly Inspection

by a top-rated mechanic at your home or office

Air bag suspension systems are a common feature found on many modern luxury vehicles and SUVs. They work by using compressed air to pressurize inflatable shocks to suspend and support the vehicle. Because they operate using compressed air, excessive moisture accumulation is one of the biggest issues that must be addressed for a properly functioning system. It is the job of the air suspension dryer assembly to keep the compressed air in the system as dry and moisture-free as possible. Moisture is a problem because it can react with the metal components of the system and cause rust and corrosion to form on the internals of the system. Internal rust and corrosion on the system’s components can quickly develop into bigger problems due to the high stress and high pressure nature of air suspension system.

The air suspension dryer assembly is what protects the system from moisture. If the dryer fails or has a problem, it will usually present itself as a symptom or problem with the entire system or a specific component (usually the compressor) and should be serviced. For this reason, most of the symptoms associated with a problem with the dryer assembly are similar to those of a problem with the compressor.

HAVE SYMPTOMS OF CAR TROUBLE?
Get an $80 diagnostic
by a top-rated mechanic at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

1. Suspension sagging

One of the most common symptoms of a problem with the air suspension dryer assembly is a sagging suspension. When the dryer fails, moisture can accumulate in the air suspension system and interfere with its leveling capabilities, which may cause one or more of the vehicle’s corners to sag. In more serious cases, components may even become damaged by the corrosion and additional stress caused by moisture build up from a failed or leaky dryer.

2. Bouncy suspension

Another symptom of a possible problem with the dryer assembly is a bouncy suspension. If excessive moisture builds up anywhere in the system, or a leak occurs from corrosion, then the ability of the system to hold and maintain pressure may be hindered. This may result in a bouncy suspension that leans excessively at takeoff, when turning, or during heavy braking.

HAVE SYMPTOMS OF CAR TROUBLE?
Get your car fixed at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

3. Compressor does not come on

Another symptom of a problem with the air suspension dryer is a compressor that fails to come on. If the air compressor becomes damaged due to excessive moisture buildup, it may cease to function completely. As the compressor is what pressurizes the entire air suspension system, if it fails due to any sort of moisture-related issue possibly stemming from a problem with the dryer, it will cause problems for the entire system.

Because the air suspension dryer assembly is what protects the entire air suspension system from moisture, it is one of the system’s most important components. For this reason, it is important to make sure that the dryer is always in good functioning order. If you are experiencing any of the symptoms above you are likely experiencing a problem with the suspension. In you need help with this, a technician from YourMechanic can diagnose your suspension and replace your air suspension dryer if necessary.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Still not sure about your car's issue?
Diagnose your car
What kind of issue are you experiencing?
Brakes are squeaking
Car is not starting
Car is overheating
Car is shaking (vibrating)
Fluids are leaking
Heating and A/C
Smoke or steam is coming out of the car
Warning light is on
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....


Related questions

Q: Where can I find an A/C compressor clutch (compressor is fine).

Hey there. You may be able to find a complete clutch at an aftermarket parts store. The compressor with a new clutch may be a better choice since they are most likely available and cheaper then purchasing the clutch parts....

Q: Where can I purchase the limp-home buffer A2203280839 for the rear suspension in my 2003 E500 MBZ?

Hello. If your rear air suspension is lowered then it will likely need to be repaired before it can be restored to full height. Any component you need to make the repairs can likely be sourced from a Mercedez Benz...

Q: After four alignments, car still dangerously pulls to right

Hello! I have not come across this issue specifically related to BMW's. However, what jumped out at me was the fact that two BMW dealership service departments aligned your 740i, took your money, and sent you away with a very...