Air Suspension Issue
 

So about a week ago I took my car in to the shop to get the drivers side rear wheel bearing replaced and after driving the car home I get out and realize the left side of the car is sitting much lower. I go into Inpa and tried to do the ride calibration and always end up with the car at almost max height. I tried typing in negative numbers to lower it and the front responds very well and almost instantly but the rear doesn't really respond. I went into "hand mode" which allows the car to be raised up with the pump manually and am able to control the rear pretty well but it seems the rears end up lowering themselves while driving or until the self level inactive message comes up. Once the self level message comes up they somehow end up in max height both front and back. Last time I pulled the self level code on inpa it gave me the (air pressure constant message). I did install the compressor repair kit this weekend and it hasn't really changed much. Not sure what to think. This inconsistency started after the wheel bearing was changed. I'm not sure if the cause is maybe the level sensor isn't plugged in, bad compressor, or bad module. Is the level sensor something that can be checked while the car is parked or do I need to have the wheel removed. Car is parked on street during week so no access until the weekend if I need to remove my wheel. Also, I left the car parked for 3 days on the max setting and the height did not drop at all.

Check your message box.

Cmon bud, spill the beans! The other 138,000 readers want to know what your saying!

Maybe you have something wrong, I don't know. When your adjusting/calibrating the ride height, the vehicle needs to be level and negative numbers in the calibration menu raise the vehicle. Adjusting one side only, will affect the height of the other side. Meaning if you raise or lower one corner, the other side of the vehicle will be at a different height. Hope this helps.

Nothing important then my phone number and to come down to get it fixed. Took care of multiple members on here already to get their rides running right or lowered @ request.

Sweet! Just thought you were telling secrets or something :stickpoke

Maybe I should pm him my number and have him come down so I can fix it.....Astoria? Guess there's one in Pennsylvania too?

Thanks for PM's. So far I got DIS running and first code I got was

64 ehc distortion plausibility

then

7a ehc accumulator pressure rises.

Once the self level message comes on the suspension stays where its at.
Also, compressor is at 15.5 bars

Check the level sensors. Maybe they are twisted.

So after going crazy on DIS and Inpa I've narrowed it down to an issue in the Rear Left. Either the level sensor or the Air Strut. I'm leaning towards the level sensor since I did the ride calibration on DIS cleared all codes measures all around to make sure the height was perfect. Then went for a test drive. 10 minutes later the rear left is almost fully deflated. I then put the car in assembly mode where the self level suspension message is popped up and ride height switch is disabled. Drove around for 15 minutes and height stayed the same. Is there any easy way to check the sensor without taking the wheel off? What should I be looking for?

what voltage readings are you getting on each sensor? That is where you would start.