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Home >> Mercedes Benz >> 2011 >> GL550 >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Suspension - 164 Chassis >> Basic Knowledge >> AIRmatic valve unit, component description - GF32.22-P-5105GZ

AIRmatic valve unit, component description - GF32.22-P-5105GZ

MODEL 164.1 /8 with CODE (489) Airmatic (air suspension with level adjustment and adaptive damping system ADS) 

MODEL 164.8 

with CODE (489) AIRmatic (air suspension with level adjustment without ADS adaptive damping system) 

with CODE (494) USA version 

Shown on model 164.1 

Location 

The AIRmatic valve unit is a component of the AIRmatic compressor unit, which is located on a bracket behind the right bumper.

Fig 1: Identifying AIRmatic Valve Unit Components (Shown On Model 164.1)
G05258010Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task 

The four level valves LR, RR, LF, RF serve to adjust the vehicle level.

P: To AIRmatic compressor unit

SP: To central reservoir

Function 

If one of the level valves is actuated, air can be delivered into the corresponding bellows via the compressor and/or the central air reservoir (lifting vehicle). On the other hand, if the release valve is actuated when a level valve is actuated (with compressor switched off), air can escape from the bellows and the vehicle level is lowered.