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Old 02-02-2014, 04:57 PM
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Air Suspension Malfunction Due To Snow/Gravel Buildup?

I just got back from a weekend trip to our Wisconsin cabin, and when I got in my 2012 Overland, the EVIC told me, "Immediate Air Suspension Service/Repair Required." The suspension would not cycle out of the "normal" height until about 150 miles into the trip, when it began to operate normally.

I had a substantial buildup of snavel (snow and gravel) in and around my wheel wells. Is it possible that this buildup was interfering with the suspension and resulted in this warning? All seems to be good now...I blasted the heck out the accumulated junk with a pressure washer once I got back.

If this is a known issue and is cleared up with the removal of the snavel, I'll forego a dealer visit. Any experiences with this?
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Old 02-02-2014, 05:10 PM
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Quote:
Originally Posted by MikeBoom View Post
I just got back from a weekend trip to our Wisconsin cabin, and when I got in my 2012 Overland, the EVIC told me, "Immediate Air Suspension Service/Repair Required." The suspension would not cycle out of the "normal" height until about 150 miles into the trip, when it began to operate normally. I had a substantial buildup of snavel (snow and gravel) in and around my wheel wells. Is it possible that this buildup was interfering with the suspension and resulted in this warning? All seems to be good now...I blasted the heck out the accumulated junk with a pressure washer once I got back. If this is a known issue and is cleared up with the removal of the snavel, I'll forego a dealer visit. Any experiences with this?
There were a few posts last month on here and other places where folks saw this in the extreme cold and or having a scenario where there was a lot of snow build up. In all instances the issue resolved itself when there was some form of warm up, e.g in a garage, parking garage, outside temp - giving things the chance to warm up or melt.

This sounds similar and if it's acting fine now I wouldnt sweat it unless it comes back under different circumstances.
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Old 02-02-2014, 06:40 PM
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Re: Air Suspension Malfunction Due To Snow/Gravel Buildup?

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Originally Posted by TurboRush View Post
There were a few posts last month on here and other places where folks saw this in the extreme cold and or having a scenario where there was a lot of snow build up. In all instances the issue resolved itself when there was some form of warm up, e.g in a garage, parking garage, outside temp - giving things the chance to warm up or melt.

This sounds similar and if it's acting fine now I wouldnt sweat it unless it comes back under different circumstances.
Thanks! I appreciate you sharing that info; had not seen that.
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Old 02-02-2014, 11:23 PM
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Re: Air Suspension Malfunction Due To Snow/Gravel Buildup?

There are some little links that dictate the ride heigh for the air suspension Jeeps. Probably yours got stuck with snow and gravel and froze up causing it to not raise/lower at speed or when placed at different ride heights.
Attached Files
File Type: pdf JGC Adjustable Air Suspension Height.pdf (292.1 KB, 38 views)
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Old 02-03-2014, 09:40 AM
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Re: Air Suspension Malfunction Due To Snow/Gravel Buildup?

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Originally Posted by f1anatic View Post
There are some little links that dictate the ride heigh for the air suspension Jeeps. Probably yours got stuck with snow and gravel and froze up causing it to not raise/lower at speed or when placed at different ride heights.
Thanks. That document contains some helpful illustrations. My wheel wells were absolutely packed with crud in exactly the areas where the links are located, so it's a pretty good bet that the buildup with the cause of my issues.

As I mentioned, it all started working after a couple of hours of driving, and I blasted the crud out after I got home . . . at least as well as I could. I drove to ORD to pick up my wife last night and everything was fine on the roughly 60-mile round trip.

This is my second winter with my JGC, and I hadn't previously encountered this. However, I drove through 200-plus miles of fairly snow, some of it on gravel roads, then parked outside in subzero temperatures before this occurred. The whole vehicle was pretty much invisible beneath the snow and ice.
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Old 02-03-2014, 06:01 PM
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Re: Air Suspension Malfunction Due To Snow/Gravel Buildup?

glad i could help. You seem to be someone who doesn't completely mind getting the Jeep dirty. I am still hoping to find a few more locals and enjoy some light off-road around Chicago
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Old 02-03-2014, 06:15 PM
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Re: Air Suspension Malfunction Due To Snow/Gravel Buildup?

not sure why this is for Russian market only:

TSB 17-004-13


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Old 02-03-2014, 06:22 PM
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Re: Air Suspension Malfunction Due To Snow/Gravel Buildup?

Quote:
Originally Posted by MikeBoom View Post
Thanks. That document contains some helpful illustrations. My wheel wells were absolutely packed with crud in exactly the areas where the links are located, so it's a pretty good bet that the buildup with the cause of my issues.

As I mentioned, it all started working after a couple of hours of driving, and I blasted the crud out after I got home . . . at least as well as I could. I drove to ORD to pick up my wife last night and everything was fine on the roughly 60-mile round trip.

This is my second winter with my JGC, and I hadn't previously encountered this. However, I drove through 200-plus miles of fairly snow, some of it on gravel roads, then parked outside in subzero temperatures before this occurred. The whole vehicle was pretty much invisible beneath the snow and ice.
I've packed in enough frozen crud in below zero under the vehicle to have the ice literally dragging on the ground under the vehicle, and the tires chewing at the ice in the wheel wells enough to make them quite warm.

The vehicle would not go into park or aero mode, but it would go up slightly at all times.

You may have just gotten yours so packed in the suspension thought it better to stay in one place rather than risk moving at all.

The only other thing I can think of is that the nitrogen pressure in the system dropped as a result of having the bejasus frozen out of it... maybe if it were at the low side of truly full at the time.

What these vehicles need is a set of super hot water nozzles in each wheel well... however, trying to pressure wash the crud out when the temperature is well below zero and the washer water just freezes in place isn't that encouraging this would even work.
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Old 02-05-2014, 03:26 PM
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Re: Air Suspension Malfunction Due To Snow/Gravel Buildup?

Quote:
Originally Posted by fnkychkn View Post
not sure why this is for Russian market only:

TSB 17-004-13


Have you seen how and where they drive over there?
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Old 02-10-2014, 04:20 PM
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Re: Air Suspension Malfunction Due To Snow/Gravel Buildup?

Quote:
Originally Posted by f1anatic View Post
glad i could help. You seem to be someone who doesn't completely mind getting the Jeep dirty.
Truth be told, I'm a little anal retentive when it comes to vehicular cleanliness. But, owning a cabin on a gravel road and having to drive 200-plus miles through snow, slush and general nastiness is slowly curing me of this affliction.

I do think it was almost certainly the buildup of crud that caused this. The temperatures were in the low double-digit range when I drove to Wisconsin, but--as has been the case quite often this winter--dropped below zero overnight. The buildup probably was pretty rock-hard by the time I headed out the next day. I think that the combination of vibration and flexing over the drive back caused enough of the buildup to fall off that the Jeep's brain figured it was safe to start operating again. When I did pressure wash the wheelwells, more snow/ice/dirt/gravel washed away than I had ever imagined could have build up.
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Old 02-18-2014, 08:58 PM
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Re: Air Suspension Malfunction Due To Snow/Gravel Buildup?

Quote:
Originally Posted by TurboRush View Post
There were a few posts last month on here and other places where folks saw this in the extreme cold and or having a scenario where there was a lot of snow build up. In all instances the issue resolved itself when there was some form of warm up, e.g in a garage, parking garage, outside temp - giving things the chance to warm up or melt.

This sounds similar and if it's acting fine now I wouldnt sweat it unless it comes back under different circumstances.
I just wanted to note that I had my 2012 Overland in the garage 3 times in Jan and Feb (Metro Detroit) due to warning messages with Quadra-Lift Air suspension. My symptoms. Remote start the vehicle first thing in the morning to warm it up. I hear a brief squealing / whistling noise come from under the from passenger side of the hood. Temps were anywhere from -20F to +15F. If I walk out to the vehicle while idling you can hear a compressor run briefly followed by a hissing sound (presumably to relieve pressure). EVIC message comes up. Vehicle would not raise or lower. Later in the day (or the next day) after things warmed up it may work. Seems to work if temps stay above 20F.

The first time this occurred I received the same EVIC message as others. I immediately brought it to the garage. The dealer kept it for three days. In the end they say they found error codes but nothing was wrong. I said bullshucks. I've read about compressor problems in the forums. This is a similar case. I asked if they checked nitrogen levels. The guy looked at me as if I was from space.

The second time I left the vehicle parked outside (remaining cold) when I dropped it off. The suspension was locked out as before. I suggested they test it immediately since it was exhibiting the same problem reported earlier and was currently non-functional. The technician didn't get in until 6 hours later after it had warmed up. Gee, problem went away.

The third time the vehicle was stuck in park position. I had to drive it 20 miles to the dealership lowered in park position. During the transition the rear wheel must have rubbed the back fascia. The rear bumper trim was dislodged from the snap clips on the drivers side rear. I pulled it into the garage and left it running. I told the service manager to have a look at it immediately since it was currently non-functional. They reported back later in the day error codes existed but no problems found. WTF? I had to refasten the rear bumper trim myself later that evening.

They say this system is incredibly complex and difficult to diagnose. The sad thing is I believe I know much more than they do by spending a few hours in the forum.

Insert a paragraph of swearing here.

My problem. The vehicle has not acted up in the last few weeks. QLII still works as long as temps are above 20F. For now. However, if something is screwed up I'm out of options. The vehicle just went out of warranty. The right dealership would have corrected the problem beforehand. However even in Detroit , where the vehicle was designed, it is still impossible to find a dealership that knows his system well enough to diagnose and correct.

What good is QLII if it can't lift your vehicle up in deep snow or bad weather?

How about them apples?

Gerb...
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