W221 Air Pump Not Working


New Member
Apr 21, 2018
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Your Mercedes
Mercedes S class W221 S320 3.0
Hi everyone, My W221 2006 air pump not working after the fuse no56 blowing twice and I put a new fuse in but no luck and I checked to see if there was any power coming through to the fuse but nothing there and I tried direct power to the fuse but it shorted out. So I tested the relays and they both turned out fine. Before I take the next step lifting the car to see if there is any damage to the wires. Can someone shed some light on this issue please. Also worth mentioning that at the same time the pump fuse blew the parking symbol came on so no hand brakes anymore.
Many thanks in advance

Chris Knott Insurance, see oursticky posts here!
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