2021 Jeep Wrangler driver assist problems

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

The forward collision/emergency brake engages when it is not needed, necessary or appropriate, and even when the brake pedel is already being pressed. I have adjusted the sensitivity of the emergency braking and forward collision system and I still have this issue.

NHTSA complaint #11743872 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

The forward collision/emergency brake engages when it is not needed, necessary or appropriate, and even when the brake pedel is already being pressed. I have adjusted the sensitivity of the emergency braking and forward collision system and I still have this issue.

NHTSA complaint #11743872 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

My 2021 Jeep Wrangler Rubicon (3.6L eTorque, automatic transmission) has had recurring drivetrain instability since about 2,000 miles while under factory warranty. It intermittently has high RPM flare during acceleration, delayed shifting, shuddering under load, and abrupt engagement. At low speeds (about 10–5 mph), it harshly downshifts, grabs suddenly, RPMs jump up and down, and it can feel like it will stall; it has stalled intermittently. Braking feels inconsistent, and at times it feels like the vehicle resists braking or surges before slowing. The forward collision warning/automatic emergency braking has activated with no obstacle present, and the power steering assist has been lost intermittently. There is also an engine tick and a high-pitched whining noise from the engine/drivetrain area. In January 2026, the transmission catastrophically failed and required replacement of the transmission, torque converter, cooler, and control module. The vehicle was out of service for over 24 days. After installation of a new Mopar remanufactured transmission and torque converter, the same symptoms returned. AAMCO has now found that the new torque converter failed, with metal shavings throughout the transmission, in the fluid, and at the bottom of the pan. I was advised that the vehicle should be sent to a Jeep dealership because no codes are currently present. I was also advised that the dealership may replace only the torque converter rather than the entire transmission, despite recurring failure and metal contamination. This presents a safety concern due to loss of acceleration, unpredictable torque engagement, stalling, unintended braking activation, power steering loss, engine/drivetrain noise, and repeated drivetrain failure. I have all the records if requested, file is too large to send in the upload area.

NHTSA complaint #11724303 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

My 2021 Jeep Wrangler Rubicon (3.6L eTorque, automatic transmission) has experienced recurring drivetrain instability beginning at approximately 2,000 miles while under factory warranty. The vehicle intermittently exhibits a high-RPM flare during acceleration, where the engine speed increases without a commensurate increase in vehicle acceleration. The transmission then abruptly engages, causing sudden jerking. At low speeds (approximately 10–5 mph), the vehicle shudders and harshly downshifts, creating a sudden grabbing sensation. Engine RPMs fluctuate during deceleration as if the transmission cannot smoothly match engine speed. Braking feels inconsistent, and at times it feels as though the vehicle is accelerating or resisting braking input before abruptly slowing. The vehicle has felt as though it would stall at low speeds and has stalled intermittently. Additionally, the forward collision warning / automatic emergency braking system has activated without an obstacle present. There have also been intermittent instances of loss of power steering assist. The engine has developed a ticking noise and a high-pitched ringing/whining sound from the engine area during operation. In January 2026, the transmission catastrophically failed and required replacement of the transmission, torque converter, cooler, and control module. The vehicle was out of service for over 24 days. Following installation of a Mopar remanufactured transmission and torque converter, the same symptoms have recurred, including RPM flare, delayed shifting, shuddering, harsh downshifts, unstable deceleration, and abnormal engine noises. These conditions present a safety concern due to loss of expected acceleration, unpredictable torque engagement, unintended braking activation, intermittent power steering loss, stalling behavior, and drivetrain instability. The vehicle is currently under further diagnostic evaluation. I have multiple documents, but the file is too large to upload

NHTSA complaint #11721573 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

Two issues that I want to make known. First is a classic jeep issue with the death wobble. I currently have the jeep back in the shop for the current recall and having them fix the wobbling again. This would be the second time that it has happened. worried because the warranty is about to expire. Next is a problem that I almost forgot about until recently because I started driving a rental jeep wrangler. With my jeep, when I have the adaptive cruse control on, it some times thinks there is a car in front of me when it is in the next lane, and right in the middle of the highway, my jeep tries to stop because there is a car next to me in its own lane. This has been going on for a while now but i have never gotten it looked at because of the cost. im going to have both issues looked at during the recall because my extended warranty is ending and im worried that if i dont get it fixed now, im going to have to pay more in the future. Side notes about my jeep, it was a buy back before I purchased it. Was supposedly fixed. At around 10k miles I had a radiator issue and then needed to have a complete engine replacement. With both of these battery recalls, I have had to get a new battery. Im about to get by 3rd. There has also been hvac issues fixed in the past. I tried to contact jeep about another buy back, but they denied the claim without even talking to me. Currently working on trying to actually talk to someone.

NHTSA complaint #11710496 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

I was driving 72 miles per hour on 4 lane highway and the steering wheel and front end of the jeep was vibrating uncontrollably. The cruse control stopped working, i applied the brake and was able to slow down and pull over to the side of the road. No flat tires so I pulled back on to the highway and arrived at my destination without further incident. 10-24-25 The same thing happened last week but i thought maybe the lane assist went off because there were no road lines (newly repaved road) but my Jeep doesn't have lane assist. After researching on line I believe what occurred is what they call "Death wobble" there were no bumps in the road - the road is in good condition so I'm not certain what prompted the death wobble.

NHTSA complaint #11695510 — an unverified report by a vehicle owner.

LANE DEPARTURE: ASSIST

Purchased this vehicle used from Chrysler Dodge Jeep in Mesa, Arizona. I was told the tires were newer and in great shape they looked to have a good amount of tread on them. However, I had an issue with one tire and the dealership patched it incorrectly making it a safety hazard Therefore they replaced one tire with the plug and when I went to a tire place for pressure issues and TPS sensor they pointed out the tires were over five years old which means these were the original tires that came with the Jeep in 2021. After only owning this vehicle for two months, I now have to replace all four tires Because there is a safety issue with the age and the tread. There was also issues with the steering damper, which they did repair due to wobbling, however there is a slight wobble still because I have one brand new tire from the dealer and three tires that are not new. The dealer refuses to take ownership of the sale of unsafe tires.. dealer offered three month 3000 mile max care warranty and they still won’t address the tire issue.

NHTSA complaint #11662136 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

Purchased this vehicle used from Chrysler Dodge Jeep in Mesa, Arizona. I was told the tires were newer and in great shape they looked to have a good amount of tread on them. However, I had an issue with one tire and the dealership patched it incorrectly making it a safety hazard Therefore they replaced one tire with the plug and when I went to a tire place for pressure issues and TPS sensor they pointed out the tires were over five years old which means these were the original tires that came with the Jeep in 2021. After only owning this vehicle for two months, I now have to replace all four tires Because there is a safety issue with the age and the tread. There was also issues with the steering damper, which they did repair due to wobbling, however there is a slight wobble still because I have one brand new tire from the dealer and three tires that are not new. The dealer refuses to take ownership of the sale of unsafe tires.. dealer offered three month 3000 mile max care warranty and they still won’t address the tire issue.

NHTSA complaint #11662136 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

I have a 2021 Jeep Wrangler 4XE Rubicon. My vehicle has been recalled three times for updates. I have had one recall done for the defroster due to the faulty software that can cause reduced visibility increasing a risk of a crash. The second one was for risk of fire from a faulty high voltage battery driving or parked. The third recall call was to update software for the high voltage battery in which doing so caused my vehicle not to fully charge and to lose power when driving and not be able to start for hours at a time. I now have brought my vehicle back to the Jeep service center for a diagnostic test and it was found that the high voltage battery pack is faulty in which Jeep has said they will put a new battery in once approved from Chrysler. Jeep has not been able to be able to fix the problem with Hybrid battery packs possibly catching on fire or exploding and the new one I'd be getting would risk the same problems possibly injuring or killing myself or any passengers I might have in the vehicle. Jeep is not able to get to the root of the cause of why these high volt battery can go on fire even when they are not in use causing possible property damage to my home or neighbors. I am told in the recall to park my vehicle away from properties and other cars which is impossible to do. I hope you take this serious matter into consideration that Jeep Corporation must find a solution for this Nationwide problem and for people on the road.

NHTSA complaint #11644188 — an unverified report by a vehicle owner.

LANE DEPARTURE: BLIND SPOT DETECTION

I have a 2021 Jeep Wrangler 4XE Rubicon. My vehicle has been recalled three times for updates. I have had one recall done for the defroster due to the faulty software that can cause reduced visibility increasing a risk of a crash. The second one was for risk of fire from a faulty high voltage battery driving or parked. The third recall call was to update software for the high voltage battery in which doing so caused my vehicle not to fully charge and to lose power when driving and not be able to start for hours at a time. I now have brought my vehicle back to the Jeep service center for a diagnostic test and it was found that the high voltage battery pack is faulty in which Jeep has said they will put a new battery in once approved from Chrysler. Jeep has not been able to be able to fix the problem with Hybrid battery packs possibly catching on fire or exploding and the new one I'd be getting would risk the same problems possibly injuring or killing myself or any passengers I might have in the vehicle. Jeep is not able to get to the root of the cause of why these high volt battery can go on fire even when they are not in use causing possible property damage to my home or neighbors. I am told in the recall to park my vehicle away from properties and other cars which is impossible to do. I hope you take this serious matter into consideration that Jeep Corporation must find a solution for this Nationwide problem and for people on the road.

NHTSA complaint #11644188 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

I had the most recent incident driving Westbound in the evening hours shortly before Sunset around October 10, 2024. It appears the sunlight from the setting sun triggered my adaptive cruise control and forward collision alert and triggered an alarm sound and activated emergency braking at the same time. I have had two previous incidents like this. One at the exact same location on my commute home at around the same time and maybe a week before. A third occurrence was on an Eastbound morning drive with the rising sun. All three incidents triggered emergency braking from a speed of ca. 65mph. I was able to react fast enough to deactivate the ACC by lightly pushing the brake pedal and could avoid serving or complete stopping of the vehicle. Luckily during all incidents I had no close traffic behind me, otherwise the incidents could have caused a rear end collision.

NHTSA complaint #11625688 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

I had the most recent incident driving Westbound in the evening hours shortly before Sunset around October 10, 2024. It appears the sunlight from the setting sun triggered my adaptive cruise control and forward collision alert and triggered an alarm sound and activated emergency braking at the same time. I have had two previous incidents like this. One at the exact same location on my commute home at around the same time and maybe a week before. A third occurrence was on an Eastbound morning drive with the rising sun. All three incidents triggered emergency braking from a speed of ca. 65mph. I was able to react fast enough to deactivate the ACC by lightly pushing the brake pedal and could avoid serving or complete stopping of the vehicle. Luckily during all incidents I had no close traffic behind me, otherwise the incidents could have caused a rear end collision.

NHTSA complaint #11625688 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

I had the most recent incident driving Westbound in the evening hours shortly before Sunset around October 10, 2024. It appears the sunlight from the setting sun triggered my adaptive cruise control and forward collision alert and triggered an alarm sound and activated emergency braking at the same time. I have had two previous incidents like this. One at the exact same location on my commute home at around the same time and maybe a week before. A third occurrence was on an Eastbound morning drive with the rising sun. All three incidents triggered emergency braking from a speed of ca. 65mph. I was able to react fast enough to deactivate the ACC by lightly pushing the brake pedal and could avoid serving or complete stopping of the vehicle. Luckily during all incidents I had no close traffic behind me, otherwise the incidents could have caused a rear end collision.

NHTSA complaint #11625688 — an unverified report by a vehicle owner.

LANE DEPARTURE: BLIND SPOT DETECTION

Hi the two major issues that need to reported. 1. The vehicle would just shut down while driving at highway speeds. It would have trouble restarting and you would have to cost to the shoulder. This issue was random, we took it to the dealership and they drove it for a week until it left them on the side of the road. They kept it for just over a month and a star case had to be opened. 2. 2nd issue, The vehicle would shutter when accelerating and would shutter when braking. Extremely dangerous when trying to drive it back to the dealership. It had something to do with the vehicle not knowing if it wanted to be in electric or gas. this also caused the ac to stop working and the blind spot system not to work . This time they had it for just over a month to change the main battery. Both case the vehicle was unsafe to be on the road and could have led to a major accident.

NHTSA complaint #11603959 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

ON NOVEMBER 2022 I HAD THE FIRST LOST OF POWER ON MY JEEP WRANGLER 2021 4XE SAHARA, I WAS DRIVING ON THE FREEWAY ON THE CARPOOL LANE ABOUT 65 MILES PER HOUR AND THE CAR COMPLETELY SHUT DOWN LEAVING ME, MY MOM, MY AUNT AND MY SERVICE DOG IN THE MIDDLE OF THE [XXX] IN LOS ANGELES WHICH HIGH TRAFFIC FREEWAY WITH NO POWER TO KEEP MOVING I COULD HAVE GET KILLED AND MY FAMILY AS WELL. AFTER THAT THE JEEP HAS BEEN IN FOR REPAIRS FOR THE SAME ISSUE ANOTHER FOURTEEN (14) TIMES. CHRYSLER WONT ANSWER TO OUR REQUESTS. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11601279 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

Several times last two weeks while driving the power steering failed. Vehicle became almost impossible to steer. At 55 mph serious. Also the vehicle would start stopping as if the passive speed control saw something ahead when nothing was in road

NHTSA complaint #11560126 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

6 - 29 - 23 when engine was started several warning lamps lit up including service electric stability control . as i drove the vehicle the power steering was out and vehicle was hard to control . had vehicle towed to dealership service dept. vehicle in warranty . no repairs done to vehicle and as of 8 - 7 - 23 vehicle is still in the shop. safety of me and others at risk if vehicle continues in this condition without repair.

NHTSA complaint #11536942 — an unverified report by a vehicle owner.

LANE DEPARTURE: BLIND SPOT DETECTION

Earlier this year vehicle would sometimes do the following, not at start up but when driving; Wipers on by themselves & driver can't shut off, turn signals inop, Both sides blind spot warning continously on alerting driver every time a vehicle on either side is passed or passes vehicle, anywhere from three to five dash warning lights illuminated. Took to dealer in April 2023 & diagnosed a bad can bus connector. Replaced connector (approx $700). Seemed to be the fix until it started again June 2023. This time all the above issues started up again including loss of power steering. I was on I70 at highway speeds in rush hour traffic and it was very dangerous. Returned to dealer yesterday 6/29/23 Immediately following loss of power steering while vehicle was displaying faults & they read codes. They are booked for 2 weeks so I'm scheduled to drop it off 7/10/2023. Dealer has been fine to work with and willing to help. My chief complaint is I have found numerous others that this is happening to (internet Wrangler JL forum) & I feel like car mfg knows about this and is not doing anything about it.

NHTSA complaint #11529740 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

While stopped at a light on a busy highway I heard a loud sound similar to the automatic emergency braking system engaging. When the light changed the vehicle would not move. I tried turning it off and then back on again with no luck. The dash displayed the message "service charging system" and then ultimately illuminated an icon for the 12V battery and the charging system. I wound up having the vehicle towed to a local dealer where it currently remains waiting to be repaired. My biggest fear here is that there was no way to move the vehicle, some type of limp mode would be a much better solution so at least I could have moved out of traffic.

NHTSA complaint #11489610 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

i was. driving on the FWY, when I pass the bridge, there is a small rupper bump. the car starts shaking vertically and starts to slow down in the middle of the Fwy. I try to speed up to pull over to the right, but no response, where I felt the gas peddle is not working at that moment. I was lucky there were not too many cars behind me on the Fwy. I went to the dealer and they say something about, dead throttle.

NHTSA complaint #11485141 — an unverified report by a vehicle owner.

LANE DEPARTURE: BLIND SPOT DETECTION

I was driving down the freeway, came upon traffic which caused me to come to a stop. When the traffic cleared and I put my foot on the gas, the jeep refused to go forward and stalled out. I had just enough power to get to a safe area on the side of the freeway. My jeep flashed the D on the gear shifter and I got a notification to put the car in "park." On the control panel screen it showed "check charging system" and "check transmission." It also showed a message showing blind spot alert was disabled and the battery light. I had nearly a full tank of gas when this happened and at least 34% of electric left to drive on electric mode when this occurred. My Uconnect app showed the message "charging fault error has occurred" when this happened on the freeway.

NHTSA complaint #11478368 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

Traveling about 55 mph and a car in front of me, exited to the right in a different lane. My jeep slammed on the brakes as I was in the lane beside the turning car. Scared me to death, there was nothing in front of me and thankfully, there was no car behind me. Very scary feeling and almost lost control

NHTSA complaint #11464272 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

Traveling about 55 mph and a car in front of me, exited to the right in a different lane. My jeep slammed on the brakes as I was in the lane beside the turning car. Scared me to death, there was nothing in front of me and thankfully, there was no car behind me. Very scary feeling and almost lost control

NHTSA complaint #11464272 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

Traveling about 55 mph and a car in front of me, exited to the right in a different lane. My jeep slammed on the brakes as I was in the lane beside the turning car. Scared me to death, there was nothing in front of me and thankfully, there was no car behind me. Very scary feeling and almost lost control

NHTSA complaint #11464272 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

1. Water leak and windshield cracked because windshield seal broken. Windshield seal found to be broken or cracked by dealership. 2. Windshield cracked and water leaking into Forward Crash Collison Avoidance Radar housing and onto viewscreen which has quit working. 3. Cracked windshield causing visual impairment.

NHTSA complaint #11463494 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

1. Water leak and windshield cracked because windshield seal broken. Windshield seal found to be broken or cracked by dealership. 2. Windshield cracked and water leaking into Forward Crash Collison Avoidance Radar housing and onto viewscreen which has quit working. 3. Cracked windshield causing visual impairment.

NHTSA complaint #11463494 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

I was driving down the highway when the engine on my Wrangler 4xe suddenly shut off forcing me to cut off traffic to get to the shoulder. Numerous error messages were displaying but I did not have time to see them all. Final message I could see was "Charging System Error". After turning the Jeep off then back one the problem cleared. I suspect this was caused by the Adaptive Cruise Control system. It had started to brake hard for a car not actually in my lane. At the same moment people were pulling in behind me to move over for a police car on the shoulder. The Adaptive Cruise Control started what was a hard brake check on this traffic, so I overrode it by pressing on the accelerator, at which point it died. At the dealer they determined from the codes that the transmission control unit had shut off the engine control unit. Otherwise nothing could be determined as being wrong with the vehicle. Seeing all the other complaints of similar incidents involving Wranglers I think there is bad software code in the vehicle's control systems.

NHTSA complaint #11440822 — an unverified report by a vehicle owner.

BACK OVER PREVENTION: CAMERA SYSTEM

I purchased this vehicle new and over the past 12 months, the back-up camera and stereo has stopped working four times. It usually fixes itself after a day or so, but this time it has been 3 days and it still will not work.

NHTSA complaint #11437703 — an unverified report by a vehicle owner.

BACK OVER PREVENTION: CAMERA SYSTEM

' IMMEDIATELY AFTER PURCHASE OF MY 2 DOOR 2021 JEEP WRANGLER JL (ANNIVERSARY) THE REAR VIDEO CAMERA STOPPED WORKING AT START UP, AND CONTINUED TO BE AN ONGOING ISSUE, DESPITE SOFTWARE REINSTALLS. ' TWO AND A HALF MONTHS AFTER PURCHASE AND WITH JUST 2000 MILES ON IT, WHILE DRIVING IN THE RAIN I NOTICED THAT APPROXIMATELY 10 SECONDS AFTER I PUT ON THE WINDSHIELD WIPERS, THE DASHBOARD LIGHT WOULD DIM SIGNIFICANTLY, WHICH MADE IT DIFFICULT AND DISTRACTING TO SEE THE SPEED AT WHICH I WAS DRIVING, OR THE CRUISE CONTROL. DIMMING MIGRATED QUICKLY AFTER THAT TO THE MONITOR WHICH BECAME HARD TO READ OR SEE. UCONNECT WAS ALSO NOT WORKING WITH IMAGES AND AUDIO BEING IN DISCERNABLE. ' NOT LONG AFTER THAT, I NOTICED THAT THE CRUISE CONTROL WAS ALSO INCREASING THE MPH ON ITS OWN WHILE IT WAS BEING SET. CLEARLY HAVING ELECTRICAL ISSUES. ' FIVE DAYS LATER GOING SOMEWHERE BETWEEN 40-50MPH ON A HIGHWAY, THE JEEP SHIFTED INTO MANUAL AND I COULD NO LONGER ACCELERATE. LUCKILY, THERE WAS NOT A LOT OF TRAFFIC AND I COASTED TO THE SIDE OF THE ROAD AND PULLED INTO A PARKING LOT WHERE I STOPPED THE CAR, SHUT IT OFF, TURNED IT BACK ON. THE CAR WAS STILL WORKING, BUT I WAS SCARED BY WHAT CLEARLY COULD HAVE BEEN A LIFE-THREATENING CIRCUMSTANCE. ' AT THE DEALERSHIP WHILE THE CAR WAS BEING DELIVERED TO ME IN THE GARAGE BY AN EMPLOYEE, IT STOPPED DRIVING IN FRONT OF MANY EMPLOYEES AND MYSELF. THE WINDSHIELD WIPERS WERE GOING AS FAST AS POSSIBLE AND RAIN WAS POURING DOWN, AND THE CAR SLIPPED INTO MANUAL OR PARK, AND BECOMING UNDRIVABLE. ' THE CAR CLEARLY HAS SERIOUS SAFETY PROBLEMS WITH THE TRANSMISSION AND MY DEALERSHIP SEEMS UNCONCERNED ABOUT THE SAFETY OF THEIR CLIENTS. THE JEEP CONTINUES TO BE A CONCERN FOR ME, AND I DO NOT FEEL SAFE DRIVING IT. I ALSO BELIEVE THIS IS NOT A NEW PROBLEM FOR JEEPS.

NHTSA complaint #11406742 — an unverified report by a vehicle owner.