I purchase a brand new 2012 Jeep gc overland. Since then I have replaced the air compressor and modulator 3 times. The first time was within the first 24 months, then again a bit over 48 months of ownership and this last time within the past month. Vehicle have 80K miles on it. Every time the suspension fails, the vehicle lock the suspension at a weird angle, producing a very bouncy ride and extremely unsafe/unstable at speeds higher than 50 mph.

- Walnut Creek, CA, USA

Quadralift suspension management system has a high propensity for failure. This results in an unsafe/unstable driving condition. 100's of complaints are found on the internet. A design defect in this system has caused the high failure rate. Expensive replacement parts are unavailable or very difficult to find. The vehicle is not road worthy and difficult to control due to the poor design of this system. Have opened a case with Jeep hq......hoping to get some support for not just my failed vehicle but the 10-15% of Jeep owners that have experienced this mode of failure.

- Englewood, CO, USA

Vehicle vibrates past 65 mpg... defective lower control arms and bushing...

- San Antonio, TX, USA

1. none of the controls on the steering wheel work. I cannot use the controls to change channels on my radio or increase / lower the volume. I cannot use the telephone hands free controls when trying to make a phone call... 2. all of the interior lights inside the vehicle stopped working. Regardless of what car door is opened 3. light came on saying traction control was off. The light was a picture of a car with two squiggly lines behind it. I tried pressing the traction control button on the dash board panel alongside the steering wheel heater button. But it would not work. 4. my windshield wipers will not turn off (have to remove the fuse in order to stop the wipers). I tried squirting the windshield washer fluid --- but it will not work. My rear window wiper will not turn on.... even though I tried to turn it on several times. 5. I have no turn signals. They would not come on no matter how many times I flipped the lever up or down. Major safety issue 6. my horn does not work - major safety issue 7. my headlights will not go to high beam even though the dial is set to auto. Not to mention my windshield was defective and had to be replaced (leaks lots of water when raining) replaced --- steering control module (part # 1he80hl9af) - according to northwest Jeep in beaverton Oregon that was the issue -not did not fix a single issue totally integrated power module (part # 68244852aa) - according to other complaints, this part also needs replaced (seems that part of th tipm was replaced - the whole unit should have been replaced.) we are extremely upset and displeased with Chrysler.... for the poor quality of the parts they used when building my 2011 Jeep Grand Cherokee overland. We bought this 2011 Jeep Grand Cherokee overland in June 2015 and for being 4 years old, it should not being having all these problems!!!

- Beaverton, OR, USA

While driving through a parking lot left front spindle broke causing me to hit a wall. My speed was under 4mph.this break resulted in the bending of lf front strut, lf outter tie rod along with other problems. If break had occured at highway speed would have been much worse.

- Greenville, SC, USA

I was involved in an accident and my 2011 jgc would not stop while hitting the brake, it speed up after impact. I am sure I was hitting the brake. I was on the highway at impact but left the road after the impact into a parking lot where it finally stopped.

- Pearson, GA, USA

The contact owns a 2011 Jeep Grand Cherokee. The contact stated that the vehicle was repaired for NHTSA campaign number: 14V154000 (service brakes, service brakes, hydraulic), but the failure recurred. The contact stated that the brake light illuminated randomly. Upon applying the brake pedal, the vehicle veered to the right which caused the suspension to be unstable. In addition, the vent control failed to work for the heater and air conditioner. The vehicle was taken to the dealer for various repairs, but the contact continued to experience the unstable suspension. The vehicle was not repaired. The manufacturer was notified of the failure and provided no remedy. The approximate failure mileage was 19,500.

- Orlando, FL, USA

The contact owns a 2011 Jeep Grand Cherokee. While driving approximately 65 mph, the quadra lift suspension system suddenly malfunctioned causing the suspension to completely fail. The vehicle abruptly lowered approximately 6 to 8 inches. When the failure occurred, the "immediate air suspension repair required" message displayed. The failure occurred on four separate occasions. The vehicle was taken to the dealer who diagnosed that the quadra lift system was faulty and needed to be repaired. The vehicle was repaired, but the failure continued to occur. The manufacturer was notified of the failure. The VIN was not available. The failure mileage was 75,000.

- Brighton, MI, USA

The contact owns a 2011 Jeep Grand Cherokee. The contact stated that while driving approximately 50 mph, a noise was heard from the rear of the vehicle. The contact pulled over and noticed that shock fluid was leaking from the rear of the vehicle. The vehicle was taken to a dealer for diagnostic testing. The technician stated that the rear air level shocks needed to be replaced. The vehicle had not been repaired. The manufacturer was notified of the failure. The approximate failure mileage was 62,000.

- Plymouth, IN, USA

Purchased 2011 Jeep Grand Cherokee overland used in summer of 2012. 3rd Jeep and have stayed with Jeep because felt they were a safe reliable car. Shortly after purchase the car would sound like it was "computing" near the engine--while off and key not near car. Told this was normal. Alarm started to go off for no reason, day time running light on driver side stopped working (not bulb) and started working a few days later on its own. Car no start or hard start several times. Check engine lights on and off, key not found, etc. 5/19/14 exiting highway at approx. 75 mph (59,000 miles) brakes don't work. Car slows but won't stop. No light illuminated for brake problem. It was petrifying. Called dealer in morning and they indicated not warranty and not recall so ordered brake booster from dealer and replaced. Was without vehicle for several days. 5/28/14 driving approx. 75 on highway--dash lights flash, car shakes and shudders uncontrollably, screen reads service air suspension system and etc code. Exit highway car has no suspension. Stop make phone call and restart car and no lights, warnings, and suspension back. Driving 35 mph on busy city street (in front of school) car dash flashes and goes black--a red lightning bolt appears and the car shuts off while driving. No brakes, power steering, hazard lights, suspension, etc. I was terrified! pushed down accelerator and car starts back up (similar to depressing gas peddle on golf cart). Took to dealer and they replaced a brake sensor and the suspension worked. Said they could not replicate the car shutting off while driving. Tipm must be the cause based on 1000S of owners comment. Filed complaint with Chrysler today. Frightened for my safety and the safety of other cars, people, etc. Drive over 100 miles per day on highway. Can't obtain tipm part. Must use car to work but safety concerns with driving.

- Albion, MI, USA

This has been an ongoing issue since I have had the vehicle regarding the tipm's unit. It first came up a few months after purchasing the vehicle in April 2013. The unit was flashed and the problem "fixed" under warranty. This January it is now not only taking 2-10 attempts to start, my gas mileage has severely decreased and there is a funny odor once the car is started. I cannot go to the dealership in my current town as there are overly innondated with work trucks for the oil field so I am forced to take my car to abilene which is an 85 mile trip each way to have any work done on it. I work for a non profit in my town and therefore drive around to not so safe places daily and hate being stuck with a car that wont start. This possible could correlate to the issues with my motor in the air ride suspension that had to be replaced in December of 2013 that luckily was covered under warranty since it had been an issue as well before the warranty mileage ended.

- San Angelo, TX, USA

On 10/18/13 I was traveling 40 mph on a main road and an F-250 pulled out into oncoming traffic from being stopped on a side road and we collided. Both our vehicles had to be towed away. I hit his driver side area and my whole front end was smashed, bumper torn off, fluid leaking from the car. It was not drivable. I had my baby in the car seat in the back but he was fine. I was fine too aside from being sore for 3 weeks and getting whiplash but the main issue that concerns me is that my driver side airbag never went off. It seems to me it should have gone off and I'm wondering if something is faulty. We contacted Chrysler and they were supposed to look at it while it was in the shop, didn't do that, now they want us to bring to dealership to have code read and in the meantime I'm still driving around in a potentially unsafe vehicle. And someone else out there with the same type of vehicle might be as well.......

- Lebanon, CT, USA

The 1st time this happened was about a year ago then now at 25K miles clunking sound from rear end the dealer is replacing the shocks and shock mounts for the 2nd time.. no reason why but I am now out of warranty am I going have to pay for this when it happens again this is a safety issue!!!!!

- Ballwin, MO, USA

I have a 2011 Jeep Grand Cherokee overland.the vehicle clunks in the rear end going over bumps at low speeds. Turns out this is due to a defect in the shocks/shock mounts. It only affects vehicles with quadra lift suspension and towing package. Including the originals, I have had 4 sets of rear shocks put on--with 3 individual shocks breaking-which I consider a safety hazard. From reports on jeepgarage.org, there are at least 12 of us in that small group ranging from 2011 to 2014 model years with this issue. I made 5 or 6 100 mile round trips to the dealer who changed shocks as he was told to by Chrysler. They came out with 3 different shock types (#'s) and shock mounts to fix this-no success. Now one of our group with a 2013 jgc Laredo has been told that it is "normal to have clunking"-even after he told them that one shock was completely frozen.they also have had 2 or 3 tsb's addressing the problem with ineffective solutions. So now a "problem" is normal. All any of us want is for our shocks to be safe and quiet on vehicles we paid over 40K for. Perhaps you can hold Chrysler accountable.

- Hays, MT, USA