Under heavy breaking the rear wheels of my vehicle lifted off of the pavement. This loss of traction and shift in weight resulted in a head on collision with a vehicle in the opposite lane of traffic. After the accident I discover that the suspension for my vehicle was incorrect to the level that FCA released a TSB regarding the issue. The suspension that was equipped with the vehicle was designed for the gasoline motor and the weight associated with that motor. My vehicle has the diesel motor (approximately 600lbs heavier) along with factory equipped steel bumpers adding additional weight. This factory design failure created a vehicle that could not perform as designed and as I found out via an automotive accident, a vehicle that under heavy breaking can lift its rear wheels off of the ground.

- Denver, CO, USA

The vehicle suddenly accelerates. The rpm-??s shoot up real high, the Jeep accelerates and the brakes do NOT work. This has occurred while driving at 55-60 mph and twice driving in city traffic going approx. 30-35. The acceleration increases and is stuck. I press the brakes and they do not work until whatever is sticking releases.

- Virginia Beach, VA, USA

The contact owns a 2021 Jeep Gladiator. The contact received notification of NHTSA Campaign Number: 22V767000 (Fuel System, Gasoline, Engine) however, the part to do the recall repair was unavailable. The contact stated while driving approximately 60 MPH, the vehicle started losing motive power, and then after a minute the vehicle functioned normally. The contact stated that there was no warning light illuminated. The contact stated that the failure was intermittent. The dealer was contacted to have the vehicle diagnosed and repaired; however, the dealer advised that the failure could be related to NHTSA Campaign Number: 22V767000 (Fuel System, Gasoline, Engine) however, the part was not yet available. The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The failure mileage was approximately 21,000. VIN tool confirms parts not available.

- Baltimore, MD, USA

On 3 different occasions the acceleration got stuck and increased speed. I pressed the brake over and over and the Jeep would NOT reduce speed or slow down for what ranged between 30 - 45 seconds. Had there been a vehicle directly in front of me I would have slammed into the vehicle. If I had been trying to stop at an intersection I would not have been able to stop. I had my child in the car two out of the three times this has occurred. The dealership states that they have not had any complaints of this occurring and could not replicate it during the few minutes they drove it and do not seem to be concerned that this issue could seriously injure or kill me, my child, or others. This is a SERIOUS issue that should be addressed immediately.

- Virginia Beach, VA, USA

2021 Jeep Gladiator. Consumer writes in regard to stop/start system not functioning. The consumer stated the stop/start feature reads as not ready. The dealer was unable to determine the cause of the failure.

- Sarasota, FL, USA

I was driving the vehicle, while towing a 5000lb trailer (vehicle tow rating is 6000lb), up a 4-5% grade at 4000'-6000' elevation, with ambient temperature around 80 degrees, and the vehicle unexpectedly derated / limited speed to approx 45 mph with no warning indicators on the vehicle. I had a number of cars and semi trucks behind me, and so I unexpectedly needed to find a safe place to pull over, which was limited due to the road conditions. I travel in areas frequented by semi trucks with limited shoulders. If I had not found a pull-out, this could have been dangerous. This appears to be an issue countered by a number of Jeep Gladiator Diesel owners, relating to either engine oil temperature too high, or EGT temp too high when towing uphill.

- Victor, MT, USA

Engine oil temperature reached 265 degrees while towing within capacity - engine derated power and I could not drive above 35mph on a road with a speed limit if 75mph. It was dangerous!

- Las Vegas, NV, USA

After stopping for fuel in Quartzite, Arizona I began to merge onto HWY 10. As I accelerated the vehicle limited my speed to 45 MPH. This is on a 70 MPH section with heavy truck traffic. I was able to pull onto the shoulder and limp to the next exit without incident. I then drove around backroads for 10 minutes, starting and stopping the vehicle and accelerating to 55 MPH. After this period of time the vehicle operated normally. This happened with no warning at all, temperatures were all within normal ranges. Since the incident I have found that this "derating" is common to the diesel engine in hot ambient temperatures or while going up hill. My safety was definitely at risk, in a different scenario it could have been much worse. I have spoked with several factory service centers and Jeep directly, they say they have never heard of the issue and don't have any advice.

- Chatsworth, CA, USA

3.0 EcoDiesel in the Jeep Gladiator has cooling issues. Thousands of users affected and discussing on forums and on Facebook groups but the manufacturer is unwilling to fix. Core of the issue is that the engine was altered in the Gladiator and Wrangler over previous installations in the Ram and Grand Cherokee by removing oil coolers and a larger oil pan, which has resulted in high oil temps. At 265 degrees (which is accomplished easily during the summer with a trailer UNDER the tow rating), the engine starts derating and limp mode. The aftermarket community has tested everything... removing hoods, fenders different cooling solutions, etc and nothing is working at the moment other than aftermarket solutions to cool the oil (which are negligible at best at the moment due to the space constraints imposed by the engine being quite large in the engine bay not not substantial room for a larger oil pan and external cooler). Chrysler should have put more work in to the design, or not sold the EcoDiesel in the vehicle.

- Smithville, TX, USA

While towing a trailer the vehicle suddenly reduces power to less than half and multiple check engine lights appear. This seems to happen only when outside temperatures are above 80f. I went from going 65mph to 45mph within 1/4 mile which caused sudden traffic issues behind me. I have had the vehicle to the dealer multiple times and they do not find anything even though there are multiple engine lights. I have had it happen a over 8 times in 1 year. I also have a co-worker that has had the same issue.

- Jackson, MI, USA

Overheating during normal driving.

- Warrenville, IL, USA

When operating the vehicle under heavier loads (5%+ grades, towing even light trailers, higher highway speeds) vehicle loses power limiting speed to 15-50mph depending on how hot the water or oil temperature is. I have had this issue in ambient temperatures as low as 31?F while towing 4000lb up a steep incline, but will absolutely overheat if ambient temp is over 100?F. Vehicle must be left running during a fuel stop or heat soak caused by the vehicle is not running will prevent me from merging back on the highway at a safe speed....max speed is 50mph until the engine oil cools off. Air conditioner use as expected makes the problem worse. There are many threads going on the Jeep internet forums with many diesel equipped Jeep Wranglers and Gladiators having the same issues, so I know these aren't isolated incidents from my vehicle alone. If you were to search "Ecodiesel power derating as temps rise" on Google, you would see some discussion. Engine fan runs at full speed, coolant is full, and radiator/grill is clean/free of debris. I have owned this vehicle since new and have operated in many types of conditions/loads over the past 14 months 23,000 miles from 9?-126?F. The first time I had the issue was late May of 2021 (At approx 5,000 miles) and it has happened no less than 20 times since then. The only visual alarm is when coolant temp reaches 248? and the vehicle speed drops to 10mph. The gauge does not read linear........Meaning the vehicle is almost already overheated by the gauge shows the temp is rising. I can only assume the is intentionally programmed into the code by the vehicle manufacturer to make the operator feel like the high temps are normal. I have not had the vehicle inspected by the local dealer because in the past they were never able to duplicate the conditions in my opinion due to laziness or incompetence. I own an auto repair shop and know the problem to be an undersized cooling system which Chrysler does not have an approved fix for.

- Redding, CA, USA

The vehicle auto starts when the AC is turned on with the Auto HAVC set to off. The owner-??s manual states that -??the engine will start automatically when-?? the -??Actual cabin temperature is significantly different than temperature set on Auto HVAC.-?? The vehicle is operating in direct conflict with owner-??s manual. This auto start issue poses a serious safety hazard as the vehicle will unexpectedly start and may begin to roll when the driver is not ready. Additionally, if someone is operating on or under the vehicle, it will result in a serious injury or the loss of a finger when the vehicle auto starts in violation of the driver-??s intent. The unexpected / wanted start could cause a collision with another vehicle or pedestrian leading to serious injury or death. The malfunction was reproduced and confirmed by multiple service personnel, who expressed safety concerns. The malfunction was also recreated by 4 independent mechanic shops and documented as a safety concern. However, an FCA Technical Advisor (TA) claimed that the vehicle is -??operating as designed-??. This portion of the vehicle-??s Auto Start / Stop System is NOT operating as designed and documented in the owner-??s manual. I feel unsafe driving the vehicle, as this is one of numerous hardware / software malfunctions plaguing the vehicle. The vehicle is available for inspection upon request.

- Kingwood, TX, USA

The vehicle auto starts when the fan is turned on without the AC. The owner-??s manual does not list this as one of the -??Conditions that will cause the engine to start automatically-??. The vehicle is operating in direct conflict with owner-??s manual. This auto start issue poses a serious safety hazard as the vehicle will unexpectedly start and may begin to roll when the driver is not ready. Additionally, if someone is operating on or under the vehicle, it will result in a serious injury or the loss of a finger when the vehicle auto starts in violation of the driver-??s intent. The unexpected / wanted start could cause a collision with another vehicle or pedestrian leading to serious injury or death. The malfunction was reproduced and confirmed by multiple service personnel, who expressed safety concerns. The malfunction was also recreated by 4 independent mechanic shops and documented as a safety concern. However, an FCA Technical Advisor (TA) claimed that the vehicle is -??operating as designed-??. This portion of the vehicle-??s Auto Start / Stop System is NOT operating as designed and documented in the owner-??s manual. I feel unsafe driving the vehicle, as this is one of numerous hardware / software malfunctions plaguing the vehicle. The vehicle is available for inspection upon request.

- Kingwood, TX, USA

The vehicle auto starts when the defrost is turned on below the max or full setting. The owner-??s manual specifies that -??the engine will start automatically when-?? the -??HVAC is set to full defrost mode-??. The vehicle is operating in direct conflict with owner-??s manual. This auto start issue poses a serious safety hazard as the vehicle will unexpectedly start and may begin to roll when the driver is not ready. Additionally, if someone is operating on or under the vehicle, it will result in a serious injury or the loss of a finger when the vehicle auto starts in violation of the driver-??s intent. The unexpected / wanted start could cause a collision with another vehicle or pedestrian leading to serious injury or death. The malfunction was reproduced and confirmed by multiple service personnel, who expressed safety concerns. The malfunction was also recreated by 4 independent mechanic shops and documented as a safety concern. However, an FCA Technical Advisor (TA) claimed that the vehicle is -??operating as designed-??. This portion of the vehicle-??s Auto Start / Stop System is NOT operating as designed and documented in the owner-??s manual. I feel unsafe driving the vehicle, as this is one of numerous hardware / software malfunctions plaguing the vehicle. The vehicle is available for inspection upon request.

- Kingwood, TX, USA

The vehicle auto starts when the brake pedal is pressed. The owner-??s manual does not list this as one of the -??Conditions that will cause the engine to start automatically-??. The vehicle is operating in direct conflict with owner-??s manual. This auto start issue poses a serious safety hazard as the vehicle will unexpectedly start and begin to roll when the driver is not ready. Additionally, if someone is operating on or under the vehicle, it will result in a serious injury or the loss of a finger when the vehicle auto starts in violation of the driver-??s intent. The unexpected / wanted start could cause a collision with another vehicle or pedestrian leading to serious injury or death. The malfunction was reproduced and confirmed by multiple service personnel at 2 Jeep dealerships, who expressed safety concerns. The malfunction was also recreated by 4 independent mechanic shops and documented as a safety concern. However, an FCA Technical Advisor (TA) claimed that the vehicle is -??operating as designed-??. This portion of the vehicle-??s Auto Start / Stop System is NOT operating as designed and documented in the owner-??s manual. I feel unsafe driving the vehicle, as this is one of numerous hardware / software malfunctions plaguing the vehicle. The vehicle is available for inspection upon request.

- Kingwood, TX, USA

The vehicle auto starts when opening the driver-??s door. This is not listed under -??Conditions that will cause the engine to start automatically while in STOP/START AUTO STOP ACTIVE mode-?? in the owner-??s manual. Other Jeep models do not auto start upon opening the driver-??s door. This auto start issue poses a serious safety hazard as the vehicle will unexpectedly start and begin to roll when the driver-??s door is open and the driver is not properly secure in the driver seat. The unexpected / wanted start could cause a collision with another vehicle or pedestrian leading to serious injury or death. The malfunction was reproduced and confirmed by multiple service personnel at 2 Jeep dealerships, who expressed safety concerns. The malfunction was also recreated by 4 independent mechanic shops and documented as a safety concern. However, an FCA Technical Advisor (TA) claimed that the vehicle is -??operating as designed-??. This portion of the vehicle-??s Auto Start / Stop System is NOT operating as designed and documented in the owner-??s manual. I feel unsafe driving the vehicle, as this is one of numerous hardware / software malfunctions plaguing the vehicle. The vehicle is available for inspection upon request.

- Kingwood, TX, USA

The vehicle auto stops when the defrost is turned off, in direct conflict with owner-??s manual. The owner-??s manual specifies that -??HVAC is set to full defrost mode-?? will prevent an auto stop, but preventing the auto stop is the opposite of initiating the event. Additionally, this issue occurs when the HVAC is operating at less than full defrost mode. Furthermore, the instrument cluster never presents a -??STOP/START READY-?? message which is the first necessary condition for an auto stop. This issue creates a serious safety hazard, as the vehicle presents incorrect information to the driver and the vehicle unexpectedly stops in traffic which confuses and distracts the driver. The unexpected / wanted stop in heavy traffic could cause a rear-end collision leading to serious injury or death. The malfunction was reproduced and confirmed by multiple service personnel, who expressed safety concerns. The malfunction was also recreated by 4 independent mechanic shops and documented as a safety concern. However, an FCA Technical Advisor (TA) claimed that the vehicle is -??operating as designed-??. This portion of the vehicle-??s Auto Start / Stop System is NOT operating as designed and documented in the owner-??s manual. I feel unsafe driving the vehicle, as this is one of numerous hardware / software malfunctions plaguing the vehicle. The vehicle is available for inspection upon request.

- Kingwood, TX, USA

The vehicle auto stops when the steering wheel is turned, in direct conflict with owner-??s manual. The owner-??s manual specifies that -??Steering angle beyond threshold-?? will prevent an auto stop, but preventing the auto stop is the opposite of initiating the event. Furthermore, the instrument cluster never presents a -??STOP/START READY-?? message which is the first necessary condition for an auto stop. This issue creates a serious safety hazard, as the vehicle presents incorrect information to the driver and the vehicle unexpectedly stops in traffic which confuses and distracts the driver. The unexpected / wanted stop in heavy traffic could cause a rear-end collision leading to serious injury or death. The malfunction was reproduced and confirmed by multiple service personnel, who expressed safety concerns. The malfunction was also recreated by 4 independent mechanic shops and documented as a safety concern. However, an FCA Technical Advisor (TA) claimed that the vehicle is -??operating as designed-??. This portion of the vehicle-??s Auto Start / Stop System is NOT operating as designed and documented in the owner-??s manual. I feel unsafe driving the vehicle, as this is one of numerous hardware / software malfunctions plaguing the vehicle. The vehicle is available for inspection upon request.

- Kingwood, TX, USA

The failure of the vehicle-??s safety condition check for an empty driver-??s seat for an auto stop indicates that the -??Occupant Restraint Controller (ORC)-?? and/or the -??Advanced Front Air Bag system-?? are not receiving proper information. This creates a serious safety hazard as the front air bags may not deploy or may not -??adjust the inflation rate of the Advanced Front Air Bags-?? as specified in the owner-??s manual. For driver safety, these systems and their associated sensors should be fully examined and tested. The vehicle auto stops when the driver-??s seat is not occupied, in direct conflict with owner-??s manual. The owner-??s manual specifically states that if the -??Driver-??s seat is not occupied-?? that the -??engine will not stop.-?? Note that this system safety check is separate and distinct from the -??Driver-??s seat belt is not buckled-?? check. The vehicle fails to properly check for the empty driver-??s seat safety condition before initiating an auto stop. The associated auto stop malfunction was reproduced and confirmed by multiple service personnel at 2 Jeep dealerships, who expressed safety concerns. The malfunction was also recreated by 4 independent mechanic shops and documented as a safety concern. However, an FCA Technical Advisor (TA) claimed that the vehicle is -??operating as designed-??, despite the vehicle operating in violation of the owner-??s manual. I feel unsafe driving the vehicle, as this is one of numerous hardware / software malfunctions plaguing the vehicle. The vehicle is available for inspection upon request.

- Kingwood, TX, USA