airmatic suspension pump

R320 2007 CDI Diesel (110Km) Issue: Short loud "T-H-H-H-R-R-R-U-S-H-H-H-H" sound after 3 min. at Cold Startup (passenger side) Description: Start car in cold (winter morning) (there's no noise) Wait 3 minutes, while engine is running (still no noise) After 3 minutes, a 2 second...

Hi Have a W211 E320CDi with the airmatic suspension, recently warning light( Take to workshop) has come on and at first level didnt change however the car has lowered right down on all 4 wheels still drivable taken to local Garage to check fuses. Garage ( not mercedes no local independent)...