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As a follow up to my front strut leak detection project. .. I have spayed all the lines at the compressor and the tops of both front struts and the left front strut completely. I have no bubbling. I did get a quarter turn on all the air lines at the head of the compressor. My car drops 2-3 inches during a 7 day period if left untouched in the garage. If left in Jack Mode for the same amount of time the front left will be significantly lower than the rest. Any ideas on where to go from here?
In addition to other troubleshooting login to address 34, I believe this is the suspension level controller in vcds. Perform the output tests. The tests will go through different operations of the air suspension. One test runs the compressor and checks the pressure reservoir if it achieves the proper level.
Unfortunately reading through old threads, to my knowledge no one has ever come back and explained the solution to the mysterious sinking suspension problem when all else appears normal.
All the cars will sink eventually, not as fast the OP guy's car usually. There's a Phaeton on display (or was) at the Dresden glass factory where they are made. Visitors report that this car is usually in some state of suspension drop and they have to start it every once in a while to keep the suspension pumped up. And that's at the factory.
Obviously the fact that the air suspension tries to keep the car level for seven days after shutdown, means that to avoid damaging the pump you would have to select Jack Mode whenever the stopcock was closed.
Are you saying that the compressor is kicking on when the car is off to keep the suspension full of air?
I do think the idea to isolate which leg of the system is leaking makes a lot of sense. Thanks
Oh wow. Where is that located? I didn't bother tracing all the lines looking for leaks because I don't think it's possible for a line to leak that slowly.
Is it possible that these shocks will only leak when under a load? Has anyone not found a leak in a shock until they put it under a load with tires on the ground? I have checked the suspected shock only with the wheel off.
