Owner-reported complaints naming the driver-assistance system, filed with NHTSA
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Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems. Every record below is an owner-reported complaint about the 2019 Toyota Highlander submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 29 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
The 25 most recent of 29, in the owner's own words
Whining sound can be heard while accelerating the vehicle. Maintenance crew is reporting an issue with transmission. UA80F 8 speed transmission on V6 engine in Toyota Highlander has this failure noise. Given that the transmission can fail anytime. It is dangerous to operate the vehicle. No action is taken from Toyota yet.
The contact owns a 2019 Toyota Highlander. The contact stated that while driving approximately 60 MPH under a local under path the vehicles the braking system suddenly activated causing the vehicle to come to a complete stop. Previously the while driving at the same location the vehicle suddenly reduced speeds. The contact indicated that each time the failure had occurred the cruise control feature was activated. The cause of the failure was not determined. The manufacturer and local dealer were not yet contacted. The failure mileage was 80,000.
1. What component or system failed or malfunctioned? System: Power Train: Automatic Transmission Specific Component: UA80 8-Speed Automatic Transmission (Internal Failure) Available for Inspection: Yes, the vehicle is currently available. 2. How was your safety or the safety of others put at risk? While merging onto the highway, the transmission failed to upshift, resulting in a sudden and unexpected loss of acceleration. The vehicle could not reach or maintain highway speeds (speed limit). This created an immediate hazard as I was unable to keep up with the flow of traffic, forcing me to make an emergency exit across multiple lanes while moving significantly slower than other vehicles. The loss of motive power increased the risk of a high-speed rear-end collision. 3. Has the problem been reproduced or confirmed by a dealer? Yes. The problem was confirmed by Heritage Toyota Service. The technicians confirmed an internal transmission failure. A secondary consultation with a transmission specialist (AAMCO) also identified the failure as a known mechanical defect common to this transmission model. 4. Has the vehicle been inspected by the manufacturer... or others? Yes, it has been inspected by the authorized Toyota Dealership listed above. I have also reported the issue to Toyota Brand Engagement (National), but a corporate field inspection (DSPM) has not yet been performed. 5. Were there any warning lamps... or other symptoms? Symptoms: A distinct whining noise from the engine/transmission area that increased with vehicle speed. Prior Events: The vehicle was taken to the dealer specifically for this noise. The dealer performed a fluid change and released the vehicle. The catastrophic failure (loss of power) occurred less than 24 hours after leaving the dealership. No dashboard warning lights illuminated prior to the loss of power.
Adaptive cruise control issue and transmission issue transmission is whining. Vehicle taken to the dealer and I am told nothing is wrong with the vehicle.
I had just driven up a steep driveway and made a slightly sharper than 90 degree turn at a very low speed to pull into a home parking spot when the car lunged forward suddenly and slammed into the stone wall of the house at a high speed. The section of this driveway after the turn is only 2.5 car lengths, but the car picked up enough speed to smash the front of the car in. The car was totaled and driver and side curtain airbags all deployed. I do not know why this happened as there is no way I would have hit the gas hard while pulling up to a building to stop. I also would not have slammed on the gas thinking it was the brake since there would have been no reason to slam on the brake when I was only going 5-10 miles per hour max around the tight turn. My shoe was not caught on a pedal, both sandals were still on my feet after the accident. I am not a two footed driver. I feel that it was an accelerator malfunction, as the gas pedal had always been a little strange with a delayed response, but may have also involved the transmission after driving up the steep hill and then returning to a short but flat stretch leading up to the house. I was very bruised up, particularly my shins and ankles. Two months later, I still have some visible bruising. I also had injuries from the seat belt on my chest and what appeared to be a powder burn from the airbags. I was quite traumatized by the sudden acceleration and violence of the crash and not understanding how or why it happened. If someone had been standing in front of the house to greet me on my return, they would have been killed. The car was towed away and totaled by the insurance company, so the problem hasn't been reproduced or confirmed. There were no warning lamps or messages that I'm aware of prior to the incident, except that the gas pedal has always felt inconsistent concerning when it engages. My phone self-dialed 911 and law enforcement came out to do an accident report.
ENGINE CHECK LIGHT coming on constantly Cylinder 3 misfire reported under DIAGNOSTICS of ADVANCE AUTOPARTS 500 Rte 291, Lee's Summit, MO 64063 another workshop said NO MISFIRE however now it says Engine Misfire 1, 3, 5, 6 4 cylinders misfiring as per diagnostic on 02/15/2025
The contact owns a 2019 Toyota Highlander. The contact stated while driving at an undisclosed speed and attempting to accelerate, the vehicle hesitated and was sluggish while responding. There was an abnormal humming noise detected. There were no warning lights illuminated. The vehicle was taken to the local dealer, where the transmission was replaced, but the failure recurred. While driving 71 MPH and merging into traffic while accelerating, the vehicle failed to respond. The contact was able to veer to the shoulder. The vehicle was taken back to the local dealer; however, the dealer was unable to duplicate the failure. There were no fault codes retrieved. The mechanic at the dealer reported that during the test drive, there was hesitation while downshifting. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 16,000.
The contact owns a 2019 Toyota Highlander. The contact stated while attempting to make a turn in a parking a lot, the accelerator pedal became stuck on the mat, and the vehicle accelerated unintendedly. The contact stated that she depressed the brake pedal, but the vehicle failed to respond. The contact stated that as she was approaching a guard rail, she turned off the vehicle. The vehicle jerked and the front end of the vehicle crashed into the guard rail. The air bags did not deploy. The contact stated that she sustained pain on the right foot and underwent surgery later. A police report was filed. The vehicle was towed to the dealer collision center, where the vehicle was repaired. The contact related the failure to an unknown recall. The manufacturer was not notified of the failure. The failure mileage was approximately 10,000.
I was using the adaptive cruise control on I-68 in Western Maryland. I was in the fast lane (on the far left of three uphill lanes). A dump truck was in the center lane going well below the speed limit. The road curved to the left at the point where I got up to the dump truck. There was no one in front of me in my outside lane. My car sensed the presence and speed of the dump truck and slowed me abruptly. There was considerable risk to me and to the driver of a white pick-up truck that was behind me, and who was also driving at passing speed. We were both going approximately 75 mph when my car slowed--a slowing that does not display brake lights. The cruise control has not been inspected. It is the default setting on ignition. I routinely disable it, opting for regular cruise, each time I use it, but the potential is always there for me and for other owners. If there was any sort of warning (I don't remember) it would have been inadequate to prevent an accident. The alertness of the pick-up truck driver saved us both a collision.
Originally, 2019 Toyota Highlander lost engine power, steering, and braking on U.S. Route 30, a very busy highway. Managed to pull off side of road AND WAITED. AFTER A FEW MOMENTS CAR STARTED AND RAN AS EXPECTED.Took to local dealer who had the car for several days, but couldn't identify the problem. This instance was 2020/2021. Fast forward to this past September 26th. Pulling out of a private parking lot the car stalled exactly as it had previously.This complete failure of engine is going to get me killed. Further I now notice my dash lights are dimming for no reason then coming back to bright. Now I read where other Highlander are doing the exact thing. I have a car, I'm afraid to drive.
The interior lights stopped working and the drive side sun visor won’t stay up and the beep never worked when I back up to something to close
Display screen Brake fluid low. Stop safety. Engine stop to start..
While I am driving my Toyota Highlander XLE 2019 in a parking lot to park my car, I stopped to yield to people crossing and I slowed down and applied brake , but my car stopped and unable to restart as car display showing an error - Braking Power Low I unable to star the car and ended up towing to Toyota Dealer ship in Plano,TX I am still waiting for Dealer to check on and advise on the issue I feel this is huge safety issue as car can stop in middle of traffic or on busy highway with out any warning and can cause a serious accident I am really pissed off at Toyota quality
The door locks will not unlock or lock. Had to replace two so far and now the other side is doing the same. Pre collision, Lane departure, cruise control and traction have malfunction. Unknown as to why at this moment.
Vehicle constantly drift to the left which make it very unsafe because the driver is in a continuous correction mode to remain in one lane - can inspect anytime, alignment and tire rotation has been complied with at least 8 times within the last 3 months by Toyota Dealer and Firestone conclusion alignment is OK sometimes with minor correction. I'm constantly holding pressure on the steering to the right and left to remain in my lane doesn't matter about the road. The problem is worst on multi - lanes in the same direction with tractor trailers passing due to air current.
I was involved in an accident that I believe was caused by sudden unintended acceleration (sua). In a very busy commercial parking lot, I was pulling into a parking space proceeding at a very slow speed, when there was a sudden surge in acceleration accompanied by a grinding/acceleration sound. I hit the brake to no effect, and the vehicle jumped the curb and hit a building shop and entered the shop. The air bags did not deploy, and I was shaken up but not injured. Thankfully, there was no one at the front desk area of the business. The car was not drivable and was towed to a body shop.
While driving threw a construction zone the car upfront of me stopped. Upon applying the brakes nothing happened. There was a tractor trailer beside us and I was at the reR and another car was at the front plenty of time to stop. Brakes didn't activate until right before impact and the nose dove down. ABS never activated and the collision avoidance never activated. I was traveling with my wife and two young kids lucky no one was hurt and I had no avenue of escape due to cement barriers and 18 wheeler.
Problems: 1) Check Engine Light lit up. 2) "Hybrid System Malfunction" warning on heads-up display. 3) "Pre-Collision System Failure" warning on Heads-Up Display. 4) Gasoline engine stalls after an intentional deceleration and is unable to come back up to speed. First Event: On July 4th, my wife and I were driving on an interstate highway. We entered an exit ramp interchange to merge onto another highway and when trying to accelerate the car suddenly became sluggish, and gave messages for problems 1), 2), and 4) stated above. Problem 3) did not occur during this event. Messages stated to pull over in a safe location. We parked on the shoulder and immediately shut the car off, waited 5 minutes and then started the car again. We were able to drive to the next off-ramp to a city street (about 100 yards) before the engine started becoming sluggish again and lurching, error messages remained throughout the event. OBD codes stated simply "faulty engine" on a car with 16,000 miles. Dealership was unable to find a cause, but did find a code for ignition failure. They checked some things but did not do any repairs, and were unable to replicate the issue as it seemed to have cleared. Diagnosis was "vapor-lock" and no explanation for why. Second Event: On August 6th, my wife was driving the vehicle to visit family, when pulling onto an exit ramp, was unable to accelerate again afterwards. All the same warnings popped up, but this time also had problem 3). Engine stalled when warnings appeared and did the same sluggish lurching. After pulling off in a safe area, Shut the car off and tried to restart 4 times, warning did not clear. Gasoline Engine does not operate when pedal is pressed. Shut the car down for 2 hours and tried to restart afterwards, warnings still present, engine now runs when pedal is pressed, but stalls when idle. Shutdown for another hour while waiting for a tow, warnings still present, still stalls when idle. Waiting on callback from dealership.
While driving onto an exit ramp I applied my brakes to my 2019 Toyota Highlander but the engine just roared up, took my foot off the brake and applied both feet to the brakes and the engine roared up again, I then came up right behind a car at the intersection and the front end collision did not stop me so I survived to the left lane but then I was headed into the highway and was T-boned by another Toyota Highlander and came to a stop on the right side of the highway. All the air bags deployed in the other SUV but none deployed in mine. The fireman had to use the jaws of life to get me out of the SUV. My wife and I were very shook up but had no serious injuries. But my brakes, the front-end collision, and the airbags all failed in the Toyota. My Highlander was totaled by my insurance company but they will not investigate the failures.
DRIVING ON A TWO LANE ROAD FOLLOWING A CAR IN FRONT OF ME. CRUISE IS ON AND THE CAR IN FRONT OF ME IS NOT AFFECTING MY SPEED. THE CAR IN FRONT OF ME TURNS LEFT INTO THEIR DRIVEWAY AND IS COMPLETELY OFF THE ROADWAY. MY CAR BRAKES VERY HARD LIKE THERE IS SOMETHING IN FRONT OF ME. THEIR WAS NO ON COMING TRAFIIC. I'VE HAVE HAD THIS HAPPEN AGAIN BUT THE OTHER CAR WAS TURNING RIGHT. THE CAR WAS COMPLETELY OFF THE ROADWAY AND AGAIN MY CAR STARTS BRAKING VERY HARD. I WAS ALMOST REAR ENDED BY THE CAR BEHIND ME.
A MONTH AGO, WE WERE DRIVING ON THE HIGHWAY THROUGH SNOW SHOWERS UP TO NH TO GO SKIING, WITH OUR NIFTY ADAPTIVE CRUISE CONTROL ON, WHEN I REALIZED THAT WE WERE ACCELERATING INTO THE CAR IN FRONT OF US. I ASSUMED THAT THE FRONT SENSOR WAS COVERED IN SLUSH, TOOK OFF THE CRUISE CONTROL AND DROVE MANUALLY. ONLY ABOUT 5 MINUTES LATER DID THE DASHBOARD ALERT NOTIFY ME THAT THE FRONT SENSOR WASN'T WORKING. BROUGHT IT INTO THE DEALER. THEY COULDN'T FIND ANYTHING WRONG. HERE'S THE PROBLEM: THE CAR SAYS "TRUST ME. IF YOU USE MY COOL SAFETY SYSTEMS, I'LL KEEP YOU FROM HITTING THE CAR IN FRONT OF YOU...AND SHOULD SOMETHING DISABLE THE SENSOR THAT CARRIES OUT THIS FUNCTION, I'LL LET YOU KNOW, SO THAT YOU WON'T DEPEND ON ME." BUT THAT'S NOT TRUE. AND, A DRIVER WHO ASSUMED THAT THE CAR WAS KEEPING ITS PROMISE, AS IT DOES MOST ALL THE TIME--MIGHT NOT HAVE REALIZED THAT IT WASN'T UNTIL THEY HIT THE CAR IN FRONT OF THEM.
VEHICLE IS SLOW TO RESPOND AND/OR HAS INTERMITTENT PERFORMANCE WHEN ACCELERATING OR MOVING FROM COMPLETE STOP. THERE IS LAG TIME IN THE VEHICLE'S RESPONSE TO DRIVER ACCELERATION WHICH MAKES IT CHALLENGING TO ENTER (FROM ROADWAY OR DRIVEWAY) ONCOMING TRAFFIC OR MERGE INTO INTERSTATE/FREEWAY TRAFFIC. THE DELAY IN THE RESPONSIVENESS AND INCONSISTENT PERFORMANCE CAUSES DRIVER TO NEED EXTRA TIME AND DISTANCE WHEN ENTERING THE FLOW OF TRAFFIC. THE FRONT END ALSO BECOMES JUMPY AND ENTERS WITH A SKID/PULL FORCE CAUSING THE NEED TO STEER INTO THE VEHICLE AND COURSE-CORRECT. VEHICLE ALSO DOES NOT ACCELERATE WELL OUT OF A RIGHT-HAND TURN ON 90DEG TURNS AND LAGS TO ACCELERATION PAST APEX. THIS PARTICULAR VEHICLE WAS PURCHASED 07/25/2020 WITH 4,278 MILES. TOYOTA ISSUED A RECALL FOR LOW-PRESSURE FUEL PUMP IN 01/2020 AND ADDED THIS MODEL TO THE RECALL LIST IN 10/2020. AN INTERIM SAFETY RECALL NOTICE STATING THE VEHICLE COULD STALL WHILE DRIVING INCREASING THE RISK OF A CRASH, PARTICULARLY AT HIGH SPEEDS. AS OF 02/15/2021, TOYOTA HAS NOT ISSUED A REMEDY TO THIS SAFETY RECALL WHICH HAS BEEN OPEN, IN TOTAL, FOR MORE THAN A YEAR. AS A DRIVER WHO RELIES ON FREEWAY TRAVEL IN ARIZONA, THIS IS DISTURBING AND THE ADDITIONAL ERRATIC PERFORMANCE IN-TOWN DURING NORMAL TRAFFIC IS EQUALLY UNSETTLING. THIS VEHICLE IS STILL BEING USED IN NORMAL CONDITIONS DUE TO THE OWNER BEING IN AN ESSENTIAL INDUSTRY DURING THE PANDEMIC, BUT RECREATIONAL DRIVING IS BEING LIMITED DUE TO THE OPEN AND UNRESOLVED SAFETY RECALL ISSUED BY TOYOTA. I ALSO CONTACTED MY SERVICE WRITER AT TOYOTA BEFORE RECEIVING THE LETTER, SHORTLY AFTER PURCHASING THE VEHICLE TO ASK IF THE ACCELERATION DELAYS AND INCONSISTENCY WERE NORMAL IN THIS VEHICLE BECAUSE THE DRIVER EXPERIENCE IS SUBPAR TO WHAT SHOULD BE EXPECTED WITH A NEW, LOW-MILE XLE VEHICLE.
TL* THE CONTACT OWNS A 2019 TOYOTA HIGHLANDER. THE CONTACT STATED THAT THE CHECK ENGINE AND TRACTION CONTROL WARNING LIGHTS ILLUMINATED WITH A MESSAGE REFERRING THE CONTACT TO HAVE THE VEHICLE TAKEN TO THE NEAREST DEALER TO BE REPAIRED. THE VEHICLE WAS TAKEN TO KINGS TOYOTA (4700 FIELDS ERTEL RD, CINCINNATI, OH 45249) TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE FAILURE WAS DIFFERENT FROM THE PREVIOUS FAILURE THE VEHICLE HAD EXPERIENCED IN WHICH THE SPARK PLUGS WERE REPLACED. THE TECHNICIAN REMOVED THE SPARK PLUGS AND THE COIL PACKS AND RELOCATED ANOTHER CYLINDER. THE VEHICLE WAS REPAIRED. THE CONTACT STATED THAT THE FAILURE RECURRED THREE TIMES AND WAS TAKEN TO THE SAME DEALER AND WAS INFORMED THAT 20 PERCENT OF ALCOHOL WAS FOUND IN THE FUEL INSTEAD OF THE RECOMMENDED 10 PERCENT IN THE FUEL MIXTURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT THAT THE VEHICLE WAS INCLUDED IN NHTSA CAMPAIGN NUMBER: 20V012000 (FUEL SYSTEM, GASOLINE). THE FAILURE MILEAGE WAS APPROXIMATELY 14,000.
TL* THE CONTACT LEASED A 2019 TOYOTA HIGHLANDER. THE CONTACT STATED THAT WHILE DRIVING SLOW AND ATTEMPTING TO PARK IN A PARKING SPACE, THE ENTIRE INSTRUMENT PANEL FLASHED ALONG WITH A CHIME. THERE WAS A LOUD NOISE COMING FROM THE ENGINE WHILE THE VEHICLE PROPELLED FORWARD. THE BRAKE PEDAL WAS DEPRESSED TO STOP THE VEHICLE HOWEVER THE VEHICLE CONTINUED OVER A CURB AND CRASHED INTO A POLE WHERE IT CAME TO A STOP. THE VEHICLE WAS POWERED OFF IN ORDER FOR THE VEHICLE SPEED TO STOP. NO AIR BAGS DEPLOYED. THERE WERE NO INJURIES REPORTED. A POLICE REPORT WAS FILED AND THE VEHICLE WAS DRIVEN TO THE RESIDENCE. THE LOCAL MILLENNIUM TOYOTA DEALER (257 N FRANKLIN ST, HEMPSTEAD, NY 11550) WAS CALLED WHERE IT WAS SUGGESTED TO HAVE THE VEHICLE TOWED AND THAT THEY WOULD FOLLOW UP ONCE THE VEHICLE WAS IN THEIR POSSESSION. THE VEHICLE WAS TOWED THE DEALER BUT NO CALL WAS RECEIVED SO THE CONTACT CALLED AND LEFT A VOICEMAIL. THE MANUFACTURER WAS THEN CALLED AND MADE AWARE OF THE FAILURE. THE CONTACT WAS ALSO INFORMED BY THE MANUFACTURER THAT PAPER WORK WAS NEEDED TO HAVE THE VEHICLE INSPECTED AND THAT THE BLACK BOX WAS TO BE INSPECTED WHICH COULD TAKE A WEEK FOR THE RESULTS AND A MONTH FOR A SOLUTION. THE CONTACT RECEIVED NHTSA CAMPAIGN NUMBER: 20V012000 (FUEL SYSTEM, GASOLINE) HOWEVER THE RECALL REMEDY WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 6,000.
FIRST INCIDENT OCCURRED IN DEC 2019 AND THEN AGAIN IN JAN 2020. WHILE DRIVING ENGINE LOST POWER AND VEHICLE BEGAN LURCHING FORWARD AND BACK UNCONTROLLABLY. AFTER PULLING OVER ENGINE SHUT DOWN. THANKFULLY WE DID NOT CAUSE AN ACCIDENT. CHECK ENGINE LIGHT CAME ON, ALSO SAID REDUCED ENGINE POWER AND TRACTION CONTROL OFF. FIRST TIME DEALER SAID IT WAS BAD GAS. SECOND TIME THEY TESTED FUEL PUMP AND IT WAS PRODUCING 5 PSI. WAY BELOW 50-60 PSI NORM. NOW OUR VEHICLE IS PARKED WAITING FOR TOYOTA TO DEVELOP A FIX FOR THEIR FUEL PUMP. NO IDEA HOW LONG THAT WILL TAKE. OUR CAR IS PART OF THE ALMOST 700,000 TOYOTA RECALLED. TOYOTA USED TO MEAN QUALITY, NOT SURE ANY MORE.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Categories with enough reports to have a page of their own
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