2 axle air suspension mystery..

[Brandon002]

So for the past month or so I've been having weird issues with my front air suspension. I have noticed the driver's side front corner sits a tad lower than the rest of the car. If I raise it all the way up and leave it overnight, it doesn't sag one bit. It's only slightly lower at cruise height. The bags always feel rock hard even first thing in the morning. Sometimes if I raise it all the way up, start driving and it lowers down after 30MPH it will sit even. When I lower to access mode it's even, at high mode it's even, it's only at cruise (normal) height that the front left corner sits a bit lower than the rest of the car and this isn't a constant thing, only certain days. Car rides and handles perfectly fine, doesn't pull to one side or the other.

I know that I have to replace the thrust arms and such as I get the wobble when braking lightly over 45mph. Could a worn bushing cause the uneven height?

[TwinTurboGTR]

The system may just need to be recalibrated. Sometimes the values get shot and will need to be brought back.

[Brandon002]

That's what I figured.

Does anyone know where there is a write up on the calibration procedure? I have a buddy with the software, but neither of us has ever messed with the suspension settings through it.

[TwinTurboGTR]

If you do a search, somewhere there is the calibration sheet that gives the values. You will need to measure from center of hub to the fender and convert it into metric. From there, you add the values into the program and the computer will sort it out. Now if after you do this, it doesn't stick, you may need to look at the level sensors and the arms

[Brandon002]

Ok, thanks. I'll search around.

[Ricky Bobby]

The height values chart is somewhere in the forum, a search should bring it up, I really should save it.

I'd run a ride height recalibration, its pretty self explanatory through DIS as they tell you what you need to do for each step, basically measure the corners, park on level ground and input the values at each corner then save the calibration.

If you still have sagging after doing a calibration, you have a leaky bag.

I dont think the worn thrust arms will cause the uneven height, but I'd get them replaced as they are annoying as all hell lol

[Brandon002]

I ordered the thrust arms today. Should have them by the end of the week. It's definitely annoying. Nothing like feathering the brakes at 45mph to have the steering wheel wobble back and forth. Driving a 70K dollar hooptie is a blast.