Baldbloke
Active Member
A couple of days ago I changed out the rear (non-ADS) air suspension bags. All was good as the car immediately came up and sat correctly, and it drove well without issues until my wife took it to work. Today the message came up on the Command screen that the car was too low, and right enough, on arriving where she'd stopped at the roadside, the car was equally down at the back on both sides.
Drove it home and jacked it up to find the new air bags were fine and holding considerable pressure, but obviously not quite enough to sit up correctly.
I did notice after fitting the new air bags two days ago that there was a noticeable dump of air when I jacked the suspension back up to check all was well after a test drive. Presumably this was because the suspension was hanging down and giving the ride height sensor a false indication that the car was sitting too high, and needing to lose some pressure.
Now my wife heard a noise just before the fault message came up. She said it wasn't a pop as if a bag had exploded but sounded like air being released......
I have now taken the inner splash guards off from the nearside inner wheel arch and found the compressor and filter. I note one thin airline coming from the compressor heading rearwards through the wheel arch into the passenger compartment. Could this be where the valve block is that I heard operating after jacking up the car two days ago, and could this be the issue?
Is the valve block contained within the compressor or is it seperate, if this is a common failure, and how to check it please?
Or is it a case of replacing it anyway as it's cheap enough to not warrant fannying around?
Drove it home and jacked it up to find the new air bags were fine and holding considerable pressure, but obviously not quite enough to sit up correctly.
I did notice after fitting the new air bags two days ago that there was a noticeable dump of air when I jacked the suspension back up to check all was well after a test drive. Presumably this was because the suspension was hanging down and giving the ride height sensor a false indication that the car was sitting too high, and needing to lose some pressure.
Now my wife heard a noise just before the fault message came up. She said it wasn't a pop as if a bag had exploded but sounded like air being released......
I have now taken the inner splash guards off from the nearside inner wheel arch and found the compressor and filter. I note one thin airline coming from the compressor heading rearwards through the wheel arch into the passenger compartment. Could this be where the valve block is that I heard operating after jacking up the car two days ago, and could this be the issue?
Is the valve block contained within the compressor or is it seperate, if this is a common failure, and how to check it please?
Or is it a case of replacing it anyway as it's cheap enough to not warrant fannying around?
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