Help with ABC noise please (video attached) - Mercedes-Benz Forum

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post #1 of 1 (permalink) Old 08-20-2015, 02:57 AM Thread Starter
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Date registered: Oct 2008
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Help with ABC noise please (video attached)

I have recently changed my ABC pump as it wasn't supplying enough pressure and often shut the suspension down.

Just before I installed the new pump I noticed a hissing sound coming from the area of the pump, as the pump was shot I put it down to being that.

With the new pump installed I am getting the noise still. It is best heard when the engine is switched off, if the car is cold the noise lasts a couple of seconds, but if the car has been driven/or suspension worked up and down the hissing can last a good minute after the engine has been shut off.

I have bled the lines in the wheel wells, but am still getting the noise.

Here is a link to a video showing noise;

By the way I have only managed to bleed air out of the system with car in the raised (2 lamps on) position as I cant get jacks under. Will this still bleed the system?

Car is a 2003 SL500

Many thanks

2003 R230 SL500 AMG Obsidian Black
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