2004-2011 Infiniti QX56 Coil Springs (x2) - What we love! Coil springs hold the vehicle up but be careful, the stock coil springs on this vehicle are rated for and designed to work specifically with the air suspension system, so when you change air shocks to passive shocks, then you will need a different rated coil spring that works well with the new type of shocks.
2004-2011 Infiniti QX56 Air Shock Absorbers (x2) - the air shocks are pumped up automatically to keep the vehicle level and to assist with the ride quality. These shocks contain a rubber bladder which is notorious for dry rotting, causing leaks in the shocks which inevitably leads to multiple failures in the air system.
2004-2011 Infiniti QX56 Air/Electronic/Magnetic Shocks (x2)- shocks that contain an air bladder or magnets whose dampening capabilities is controlled by the suspension control module.
2004-2011 Infiniti QX56 Height Sensors (x2) - a linkage located near each wheel of a vehicle with any electronic suspension that, either mechanically or electronically, constantly measures the height of the vehicle, and reports this information back to the control module so that the computer can identify if changes in height need to be adjusted accordingly. The ride height sensor is a moving part, and like all moving parts, they will eventually wear out.
2004-2011 Infiniti QX56 Coil-over Struts (x2) - a type of shock, absorber; has metal tubing filled with gas-charged hydraulic fluid that is connected to the wheel of a vehicle in order to reduce the effects of vertical travel on a rough surface which controls the bounciness, and therefore comfort, of a vehicle. Coil-over struts have a coil spring seated at the top which controls the height of the vehicle. Over time, coil springs can become weakened and will need replacing.
2004-2011 Infiniti QX56 Air Lines- tubes that run from a compressor to the air which carry pressurized air to the air bags in order to adjust the height of the vehicle, respectively.
2004-2011 Infiniti QX56 Solenoids (x2) - usually L-shaped, these plastic components connect the electrical connection and lines of suspension components to the suspension control module on vehicles with active suspension. The solenoid regulates the air pressure for each air spring. Solenoids start to leak as they wear out causing the vehicle to sag or to lean. This will cause the ride height sensor to send a signal to activate the compressor in an attempt to inflate the air suspension and level out the vehicle. This excessive work load will eventually lead to total failure of the compressor.
2004-2011 Infiniti QX56 Compressor Assembly- creates/sends pressurized to active suspension components. When the air suspension starts leaking, the compressor/pump starts working harder to try to keep the system inflated. By the time air suspension leaks down completely, sitting the vehicle on its tires, the compressor will either have failed or be well on its way to full failure. Buying replacement air springs and taking the time to install them only to find out the compressor still needs to be replaced can be very frustrating, time-consuming, and expensive.
2004-2011 Infiniti QX56 Dryer- prevents moisture build-up inside of air suspension parts.
2004-2011 Infiniti QX56 O-rings- Although they are the least expensive parts of the air suspension, they are responsible for maintaining the seal where all of the air lines connect. Be sure to replace the O-rings when repairing any air suspension system.