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Old 03-27-2016, 03:40 PM
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Jeep Not Level - air suspension

I think my Jeep doesn't sit level. Seems like the rear is about 2.5 inches higher than front (33" front and 35.5" measured to the bottom of the fender flare).

Also seems like there is also 1 inch difference between passenger side and driver side (33 vs 32 in front ) and (35.5 vs 34.5 in rear). Is that what it should be? I would imagine that it probably wouldn't be perfectly even but 2-3 " differences seems to be excessive especially because it should be self-leveling. Especially rear driver side corner seems to be quite high or front passenger quite low.

EDIT: Or maybe the front is to LOW and makes it look that rear is to HIGH.

Can somebody with air suspension check the heights for me? Is your Jeep level? My is 1" off side to side and 2-3 " off front to back.
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File Type: jpg IMG_5346.jpg (371.0 KB, 31 views)
File Type: jpg IMG_5344.jpg (525.9 KB, 38 views)

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  #2  
Old 03-28-2016, 09:11 AM
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Jeep Not Level - air suspension

33 in the front and 34 in the rear, is that what it should be?

Air suspension ride height
Normal ride height?

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Old 03-28-2016, 09:35 AM
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Re: Jeep Not Level - air suspension

All you are measuring is the height the fender opening is above the ground. Between the front and rear those aren't supposed to be level...infact no car I have owned is. The Grand Cherokee does have a slight forward rake with the front a bit lower. If they were level it would give the appearance that the back is sagging. A slight difference between driver and passenger side is fairly common as well. I will say your rake does look sort of excessive though. What does it look like in entry/exit lowered setting?
If you want to bring the rear down just a little you can make your own suspension links and put your ride height anywhere you want. There are some threads on the DIY links and they are simple to install.
My 2015 has a 1" height difference between front/rear. And from side to side it's within 1/4". Hope this helps.
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Old 03-28-2016, 10:02 AM
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Re: Jeep Not Level - air suspension

I can't really be any help, all I know is that the ass of my 15 Overland does not sit that high.
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Old 03-28-2016, 10:04 AM
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Re: Jeep Not Level - air suspension

Thanks a lot for the reply.

Yes, I would expect back to be a little bit higher - about an 1" or so. I have an earlier picture of the truck which looks a bit more normal.

My heights measured at normal height with engine ON and after cycling through the air suspension.

Front Driver: 33.0"
Front Pass: 32.25"

Rear Driver: 35.5"
Rear Pass: 34.75"

Seems like I'm off 0.75" side by side and and 2.5" front to back. Measured from the ground to the bottom of the fender flares at highest point:

When I raise / lower the car the numbers go up proportionally (ORA1 +1.5 from normal and ORA2 + 2.75 from normal) on all corners. Makes me believe this is NOT an issue with the suspension but with somehow calibration.

Full disclosure: Dealer couple of weeks ago replaced Air Suspension Module / Computer due to some failure/throwing code. I bet you they didn't perform calibration at all or they did it incorrectly. Made the appointment with the dealer but working with them is like pulling teeth...

Below is an older photo. Seems like a bit more level.
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Old 03-28-2016, 11:36 AM
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Re: Jeep Not Level - air suspension

In that older the pic you are right it does look a little more level. The rear still seems so high, but I think it appears more level because the front is up a bit. So it almost seems that on your newer picture the front came down some. 2-2.5" front/rear rake is a bit much. I measured my 2015 High Altitude and like I said before the rake is 1" difference between front and rear. Surprisingly it's just about dead even between left and right side.
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Old 04-08-2016, 03:17 PM
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Re: Jeep Not Level - air suspension

I was able to get it fixed ... although it took some drama. After swapping out the ASCM (Air Suspension Control Module) they need to calibrate the suspension - and they obviously didn't. On the first attempt I was berated and send to read owner's manual as in "You are an idiot, what the f$#$ you want?".

Took a bit of f$#$# bombs and a chat with service manager to get it fixed. Again questioning my sanity for buying MaxCare as I'm going to deal with those guys for another couple of years.

The car now sits at:
33 3/4 33 1/2
34 3/4 34 3/4

so about 1" diff front to back and front passenger corner is off by 1/4" left to right. I would love to have it perfectly even but I'm guessing this is within the spec. Also wondering since I'm adjusting the car while inside then getting out and measure that side might be a bit higher due to me just leaving the car and suspension not compensating for 180 pounds that fast.
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Old 04-18-2016, 01:49 PM
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Re: Jeep Not Level - air suspension

Also "even" and "level" describe two different states. You would have to check the ground at all four corners with a laser transit to determine if you are parked on a "level" surface. If not, the suspension leveling the vehicle will keep it from being "even".
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Old 04-20-2016, 09:56 AM
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Re: Jeep Not Level - air suspension

Good info...I wonder what the calibration process entails?

Is there a program to let consumers access the control modules of the car? Similar to vag-com for the Audi /VW guys out there?
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Old 04-20-2016, 07:19 PM
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Re: Jeep Not Level - air suspension

AFAIK there is nothing to let you tweak any of this.

Suspension height is measured at two points on the suspension on the four corners, not anywhere on the body. IIRC when the suspension is recalibrated, these four pairs of measurements (or maybe the difference of each pair) are stuffed into the computer and it recalculates the height settings.
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Old 04-21-2016, 08:29 AM
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Jeep Not Level - air suspension

You need witech software to do this = say hello to dealer.

Also ... The suspension is designed to keep the heights the same meaning if any corner sags it will get raised to a programed height. So it is level in relation to all its corners and not in relation to surface. It does NOT work like bubble level.

If you park on an incline it will be at the incline but if you throw a bag of sand in the trunk the back or any corner should not sag and they should be at the same height in relation to each other. Each corner is programmed to be at specyfic height and that height should be always maintained if system is working.

Hard to explain ...


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Old 11-17-2016, 01:23 PM
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Re: Jeep Not Level - air suspension

Okay, so I need a suspension calibration... because mine is doing the exact same thing yours was. Slightly lower on the passenger side than the driver side. Really annoying. That inch difference is really noticeable.
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