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Home >> Mercedes Benz >> 2010 >> GL350 >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Suspension - 164 Chassis >> Basic Knowledge >> Compressor unit, component description - GF32.22-P-5103GZ

Compressor unit, component description - GF32.22-P-5103GZ

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

MODEL 164.8 with CODE (489) AIRmatic (air suspension with level adjustment without ADS adaptive damping system) with CODE (494) USA version up to Model Year 8 

Shown on model 164.1 

Fig 1: Identifying Airmatic Compressor Unit - Shown On Model 164.1
G10116186Courtesy of MERCEDES-BENZ USA

Location 

The AIRmatic compressor unit is located on a bracket on the right behind the bumper.

Task 

The AIRmatic compressor unit is used to generate the air pressure required to raise the vehicle.

Function 

The compressor motor is not actuated directly by the AIRmatic control unit (N51), but rather the load current is switched via the AIRmatic relay (K67). Furthermore, deflating valve is integrated into the AIRmatic compressor unit, and it is used to lower the vehicle level.

IMPORTANT If in the event of a fault the pressure in the AIRmatic compressor unit should be too high, then this is automatically reduced by means of an integrated, mechanical pressure relief valve.