What Are the Symptoms of a Faulty W221 Valve Block?

What Are the Symptoms of a Faulty W221 Valve Block?

The w221 valve block is responsible for distributing the air made by the compressor to each of the four corners on your car that use air suspension. It contains six solenoid valves that must all work properly to control the amount of air sent to each individual air strut or air spring based on the ride height that is required by the car's computer. If any of the valves in the w221 valve block go bad the ride height will become unstable and your car will sag in one or more corners.

The most common reason that the w221 airmatic valve block will fail is because the o-rings dry out. This can cause air leaks that overwork the electrical solenoids inside of the w221. It can also allow moisture to enter the w221, which degrades the electrical components.

Another common problem is because the w221 airmatic valve block can overheat. This can also cause the o-rings to dry out and lead to air leaks. It's important to understand the symptoms of a faulty w221 valve block so that you can determine whether or not it is the cause of your suspension problems.

If you suspect that your w221 valve block is the culprit then it is time to replace it. We recommend using a reputable brand like RMT to ensure that you are getting the best replacement possible. Each of their w221 air suspension valve blocks are inspected and tested to ensure that it meets the exact specifications for your Mercedes S class. In addition, they are all backed by an exclusive limited lifetime warranty. Having a faulty w221 valve will cause your suspension to be unreliable and make it hard for your air springs or air compressor to maintain the correct ride height.