Hi there,
And welcome to another video where i will be showing how to diagnose and repair modern mercedes air suspension.
The car in this video has a severe but intermittent leak, where it depend on which way was parked for the leak to appear.
I follow standard diagnosis procedures and i used soapy water to test the valve block, hose, fittings and air spring with no luck to find the leak, however i used the scan tool to make an educated guess for which component has failed.
The car in the video is an X164 chassis, but they are all the same more or less.

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