So, I go to work and come home for lunch and car is sitting fine. Come out to go back to work and the driver rear air suspension is fully inflated! This is of course really dropping the passenger side of the car front and back.
I get in and it up road to frontage road to get to higher mph. Turn around and come back home. No change. Driver side feels like no suspension at all- very rigid and passenger rear offers no support at all.

So, recent history is that I had front tire replaced and discount tire used a floor jack out in parking lot. I didn’t have a suspension codes before that, but after I did have suspension fault & adaptive dynamics fault, but car drove normally.

When I parked, the front passenger tire was up on this metal plate that may have been two inches tall. Seemed negligible to me. I didn’t hit any pot holes, or anything like that. Now, the weird thing is that when I started the car, the suspension fault and adaptive dynamics fault were and are still gone and while driving it, I noticed this odd beep approx every fifteen seconds while checking to see if it would balance itself out. How could the codes have disappeared?

No new info in resetting air suspension, or finding a way to release air from suspension, or manipulating sensors? I looked around on site, but last info I found was from 2017.

I’m trying the “touching the battery cables together” tactic right now. I really appreciate any advice.

Thanks,
Dan






Oh and this hose comes from trunk floor, but isn’t connected anywhere. I don’t know what it is.

 

Calibrate the suspension. Need SDD or capable scanner. Most EURO shops can do something.

When someone manually jacks these vehicles, and sometimes think sitting and starting the car with the door open is ok (it's not) you end up with what you have going on.

 

The tire change happened two weeks ago and that car literally did this while parked for lunch. Also, what do you attribute the suspension faults being gone all the sudden?

I read you reply on my other post. Thanks, I’ll look into that sdd.

 

Ah I see. You mentioned "recently", so I thought it was something like same day recent.
I see your left rear is higher than your right rear, so I imagine there was a difference before. Whatever reason it's now exacerbated.

In any case, I see no reason not to follow the same advice. You don't need the root cause right now, you just need a fix, which will drive out the root cause.

Dealer will charge you, my independent recalibrated my suspension for free the first time I asked before I bought a new scanner. If you have a sensor go bad or pull in an incorrect reading (short of mechanical fault) the vehicle will attempt to reach a new height in the rear, compensating for the front springs, in order to stay within spec lower and upper limits. See vehicle shop manual in the stickies for more details, it specifies per model year and wheelbase which is the correct height setting in front and thus the rear, or vice versa.

 

Battery cable solution didn’t help.

I released the air from the driver side all the way down and connected battery again and the rear inflated to what looked pretty normal. The left side was about 3/4” taller though. Unfortunately, as soon as I drove around the problem came back while I was driving.

To hell with it. Lol I just dropped it off at the shop.

 

Good luck, always curious what the outcome will be. There are limited failure modes: wrong sensor height front, wrong sensor height rear, some kind of air related problem/line blockage, or wrong calibration to start. If it returned to the same setting after letting air out, it did it purposefully, i.e. your calibration was off to begin with. Root cause could be mechanical. Warnings going off make no difference, means it went back to ride setting. So I venture to guess someone had this in maintenance mode with the door open during cold start.