Mercedes GL450 air suspension compressor replacement. In this video I'll show you how to replace the air suspension compressor ( A 166 320 01 04 80 ) on your Mercedes.
Tools Required: Floor jack, Jack stand, Wheel chocks, Tire lug wrench, 12mm wrench, 17mm socket, 10mm socket and ratchet, 8mm socket, panel clip remover, pliers.
Make sure the fuse is removed before uninstall. Secure the vehicle with jack stands and wheel chocks. Jack up the vehicle and remove the wheel. Use a clip remover to remove an inner fender liner. Once you remove the panel, you will see the air compressor. Use a 12mm openend wrench to disconnect the airline. Unplug two electrical connectors that go to the air compressor. Disconnect the air intake hose( use pliers). Remove three nuts that hold the air compressor. Remove the air compressor unit.
Assemble in reverse order.
Install the new compressor (do not overtighten the nuts). Install two electrical connectors. Connect the air intake hose ( use pliers). Install an inner fender liner. Install the wheel and slowly lower the vehicle. Reinstall the air compressor fuse (40 amp, number F238). Start up the engine and allow it to rise. When replacing Air Suspension (AIRBAG), Air Suspension Valve Block or Air Suspension Compressors necessary to elevate vehicle of the the ground to help bags inflate. Elevate vehicle and start pumping before bringing vehicle to the ground. Hope you have found this helpful!
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