Thread: Air Suspension dropping no leaks

Absolutely. I did exactly the same thing and got exactly the same result, which was driving me nuts. I then put a time lapse camera on the car for a couple of days to watch.

With the fuse out, the car moves around a *lot* with temperature variations in the environment causing pressure changes in the bags. Up, down, left, right. I was quite stunned by how much it pivoted around. Made worse by the suspension sticking, so the torque slowly builds up until it moves with a creak.

Now put the fuse in and when the suspension computer wakes up one of the corners isn't where the computer left it, so it drops the other 3 corners a whisker to compensate because that's the only tool in its box.

This repeats until eventually it's down as far as the computer will let it go.

Did you take actual measurements from the hub centre to wheel arch and look for slight changes at each corner over that week?

Me? Daily. Nothing really notable on a daily basis if the fuse was out.

Originally Posted by BradC

Me? Daily. Nothing really notable on a daily basis if the fuse was out.

Either of you. So what was your problem then Brad? So it doesn’t move when the fuse is out, yet goes to ground if it’s in. You said one corner must have been affecting it. How did you work out which one it was?

Originally Posted by DiscoJeffster

Either of you. So what was your problem then Brad? So it doesn’t move when the fuse is out, yet goes to ground if it’s in. You said one corner must have been affecting it. How did you work out which one it was?

My "problem" is ongoing and non-specific. We don't have a garage, so it's parked in the drive. If I leave it for a week it'll gradually work its way down (anywhere from "a bit" to "a lot"). Looking at it, the car seems to "shimmy" around as the environment and sun position changes. That causes the occasional re-level which results in a 4 corner drop. It just happens "randomly", but watching the video I can see the car moving around which would explain it.

If I leave it parked under a building in the CBD for a week, it doesn't drop. No sun, and the temperature varies very little.

Checking the CCTV now, it's been in the driveway since the 24th of May and doesn't appear to have dropped much. It does seem to happen more in the hotter weather.

When it had a leak, it was pretty obvious and totally obvious on timelapse with the fuse out.

I’ve not taken measurements, plan to put a diagnostic tool on it and I’ll also put the standard rods back in and see what it does.

I would love to see that time lapse!

I was hard up for space a couple of months ago and I deleted them. I've just found the script I used to create it though, so next time I go away for a week or more I'll run it up and create another one. Just need to remember to take the suspension fuse out.

The time lapse of the leak for diagnostics is in this post however : D3 EAS C1130-66 fault