2020 Toyota Highlander Driver assistance Problems

The Pre-Collision System with Pedestrian Detection is a good thing, but there's a problem. It stops the car too abruptly on the highway, leading to rear-end collisions. When you release the brake pedal, the car remains stationary. To get it moving, you need to press the accelerator pedal. There have been four instances of the Pre-Collision System with Pedestrian Detection being activated in the last 12 months. Two of them ended in rear-end collisions. In the other two cases, there were no cars behind.

NHTSA ID

11734587

Incident

Mar 12, 2026

The vehicle is a 2020 Toyota Highlander experiencing a transmission system malfunction, specifically involving the automatic transmission and/or torque converter. Component/System Failure: The transmission produces a noticeable whining noise during acceleration and exhibits abnormal shifting behavior, including hesitation and delayed response when pressing the gas pedal. The issue appears to originate from the internal transmission components. The vehicle is available for inspection upon request. Safety Risk: This condition creates a serious safety concern, as the hesitation and delayed acceleration can impair the driver’s ability to safely merge into traffic, cross intersections, or respond to changing road conditions. The unpredictable response increases the risk of a collision, especially in high-speed or congested traffic environments. Reproducibility / Confirmation: The issue is consistently reproducible and occurs whenever the vehicle is accelerated. The problem has not yet been fully resolved and is in the process of being addressed with a dealership/service center. Inspections: The vehicle is scheduled to be inspected by a Toyota dealership. At this time, it has not yet been inspected by the manufacturer, police, or insurance representatives. Warning Signs / Symptoms: There were no warning lights or dashboard messages prior to or during the issue. The first symptom noticed was the whining noise during acceleration, followed by abnormal shifting behavior and hesitation. These symptoms have progressively become more noticeable over time. This issue appears consistent with reported transmission problems in similar model vehicles, raising concern that this may be a broader defect affecting vehicle safety. I took my vehicle to 3 different mechanics and they told me that my vehicle is not safe to drive long term without a total transmission replacement. Thank you!

NHTSA ID

11728866

Incident

Dec 26, 2025

Vehicle: 2020 Toyota Highlander XLE Purchased: August 2020 Owner: Original owner Transmission: UA80F Dealer quote for “Transmission assembly remove and replace: $8,666.22 +tax The vehicle is experiencing delayed acceleration (lagging power) and a loud whirring noise from the transmission when the accelerator pedal is pressed. The whirring noise immediately stops when the accelerator pedal is released. The Toyota Highlander had just exceeded the 60,000 mile/5 year powertrain warranty. Vehicle has 68,079 miles and is 5 1/2 years old. The delayed acceleration creates a serious safety hazard, particularly when starting from a complete stop while attempting to make a turn into traffic. On multiple occasions, the vehicle failed to respond promptly when the accelerator was pressed, placing the vehicle at risk of being struck by oncoming traffic. On February 17, 2026, Oakbrook Toyota diagnosed the vehicle with a failed/bad transmission after charging a $200 diagnostic fee to investigate the whirring noise and power delay. This failure occurred on a vehicle that has been properly maintained and has not been modified. Upon searching the Internet, there are many, many complaints regarding the UA80 transmissions failing between 60,000 and 70,000 miles. There are also multiple lawsuits filed for failed transmissions.

NHTSA ID

11721186

Incident

Feb 17, 2026

At approximately 120,000 miles, the vehicle began exhibiting a pronounced shudder or vibration between 40–50 mph under light acceleration or steady cruising. The condition progressed to delayed shifting and intermittent loss of acceleration response. The most concerning issue is hesitation and reduced acceleration when attempting to merge into traffic or increase speed. On multiple occasions, the vehicle failed to respond promptly to throttle input, creating a potential safety hazard due to loss of propulsion. The vehicle was evaluated at two authorized Toyota dealerships. Both indicated that the condition is consistent with torque converter or transmission failure. Full transmission replacement was recommended at an estimated cost of approximately $9,000. No whining or grinding noises are present; symptoms primarily involve shuddering and hesitation. The vehicle has not been driven since October 21, 2025, due to safety concerns and to prevent further damage. The vehicle has been regularly maintained at Toyota dealerships and has not been used for towing. This complaint concerns loss of acceleration, transmission shudder, and potential premature failure of the 8-speed automatic transmission.

NHTSA ID

11719509

Incident

Oct 21, 2025

The contact owns a 2020 Toyota Highlander. The contact stated that while reversing, the rear-view camera screen displayed a black screen. The contact stated that the failure was persistent. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The dealer was made aware of the failure. The contact referenced an unknown recall with a similar failure; however, the VIN was not associated. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 153,000.

NHTSA ID

11711392

Incident

Jan 2, 2026

Mileage

153,000 mi

my wife was pulling into a driveway slowly approximately 5 mph when she went to stop the Toyota Highlander sped up to full speed and smash the tree while my wife was depressing the brake. All airbags were deployed and it looks like they are going to total the Toyota Highlander that has all the maintenance records Very lucky to not have somebody seriously injured.

NHTSA ID

11628820

Incident

Dec 2, 2024

When coming to a stop the vehicle will often lurch forward. The lurch is powerful and could easily cause a collision. This problem occurs both when stopping in traffic and pulling into parking spaces. We were told by the dealer that the problem is caused by hybrid cars but we've had hybrid cars before that did not exhibit this behavior. It sounds like the dealership is aware of the problem but Toyota is not addressing it. This issue certainly poses a safety issue, especially for vehicles in front of the affected vehicle when attempting to stop.

NHTSA ID

11626803

Incident

Feb 1, 2024

There is an open recall which has not been addressed in a timely manner. The below has been open since OCT 26, 2023. I have been advised that I would be notified when a remedy was available but it's been ten months with no solution. My front bumper detached while I was on the interstate causing damage to the front end of my vehicle. The subject vehicles are equipped with a resin front lower bumper cover assembly, connected with mounting tabs. If there is minor impact to the lower front bumper cover assembly that causes the mounting tabs to detach from the vehicle during normal operation, one or more parts of this assembly could detach, which could become a road hazard, increasing the risk of a crash or injury for other road users.

NHTSA ID

11610814

Incident

Aug 25, 2024

I was pulling into a parking space in a parking garage. As i was pulling in, the car unintentionally had a rapid acceleration event and crashed into a cement pillar causing the car to be a total loss

NHTSA ID

11594195

Incident

May 3, 2024

On numerous occasions when applying the brakes on my vehicle there is a very noticeable "surge" when the vehicle slows to a near stop. It feels like there is a momentary loss of braking before the brakes re-engage. I have had the vehicle since new and it seems like the problem has become more noticeable over time. I have lost some confidence in the safety performance of the vehicle due to this dangerous issue.

NHTSA ID

11584472

Incident

Apr 22, 2024

The contact owns a 2020 Toyota Highlander. The contact stated that after slowing down to come to a stop, the vehicle would inadvertently surged forward. There were no warning lights illuminated. The vehicle was taken to the dealer who was unable to determine the cause of the failure. The vehicle had not been repaired. The failure had since become more frequent. The manufacturer was made aware of the failure. The approximate failure mileage is 36,009.

NHTSA ID

11522590

Incident

Aug 18, 2022

Mileage

36,009 mi

When I am using the brakes an a medium rate the vehicle will loose its brakes for a second causing a loss of control on the vehicle. This happens randomly and caused us to almost go off a culvert of a driveway once. It has scared us many times to thinking we were going to hit the car in front of us. It makes my wife sick every time it happens. Smart motors and regional techs from Toyota have looked into this issue and determined this to be a “feeling” and not a safety hazard. This is not the case and needs to be fixed before someone gets hurt. Lane Keeping assist is unusable. When it is turned on it fights with the driver. It will swerve back in forth in its lane and sometimes so bad it feels like the car would roll if it was not turned off and got worse. Every once in a while it will try to take an exit on the highway by itself. Date of incident in questionnaire is approx to the last time it happened. It has happened too many times to count. Vehicle mileage is when we first started really having issues with the brakes. Lane assist is an always thing.

NHTSA ID

11512616

Incident

Mar 17, 2023

The contact owns a 2020 Toyota Highlander The contact received notification of NHTSA Campaign Number: 22V239000 (Electronic Stability Control) however, the part to do the recall repair was not yet available. The dealer was made aware of the issue. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID

11465511

Incident

Apr 20, 2022

The contact owns a 2020 Toyota Highlander. The contact stated that upon the depression of the brake pedal, the vehicle would intermittently surge forward without warning. The contact stated that he would shift the vehicle into neutral to stop the vehicle from surging. The contact also stated that the blind spot monitor's unavailable warning message would intermittently appear on the instrument panel. The contact had taken the vehicle to Bayside Toyota and Waldorf Toyota and each dealer was unable to duplicate or diagnose the cause of the failure. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 21,000.

NHTSA ID

11447885

Incident

May 1, 2021

Mileage

21,000 mi

The lane keeping assist does not work properly on my vehicle. The lane keeping assist does not keep my car in the center of the lane as intended. For instance, it very forcefully makes the car drift to the left and right of the lane and frequently pulls it into the other lane. I have reported this to my local dealership - Sparks Toyota in Myrtle Beach, SC and Toyota Corporate. Sparks Toyota service has admitted that there are many customer complaints about this issue. They have stated that there is a software download "fix" in the works, but not yet available. I did not take their word for this and called Toyota Corporate. The only "solution" I have been offered is an offer to show me how to turn the feature off. This is totally unacceptable as the is an important safety feature that does not work properly and in fact, creates an unsafe situation while driving. Since my report of the issue, I have been made aware of an owners Facebook forum that other owners state they are having the same issue and seems to be a widespread problem.

NHTSA ID

11426238

Incident

Jul 1, 2021

VEHICLE WENT INTO LIMP MODE REIEVED CODE P0300 REDUCED ENGINE POWER ON HIGHWAY WHEN ACCELERATING

NHTSA ID

11387820

Incident

Jan 13, 2021

Mileage

12,995 mi

DRIVING 50 MILES/ HOUR VEHCLE STARTED LOOSING POWER AND STARTED TO SHAKE. ENGINE LIGHT CAME ON AND TWO DIFFERENT MESSAGES IN DASHBOARD POP OUT. ONE ABOUT HYBRID MALFUNCTION AND THE OTHER OUTPUT POWER REDUCED.

NHTSA ID

11386179

Incident

Dec 31, 2020

Mileage

1,960 mi

WE RECENTLY PURCHASED OUR HIGHLANDER AND IT HAS A LITTLE OVER 4,000 MILES. TODAY WHILE DRIVING DOWN THE ROAD AT ABOUT 45 MPH, THE CAR JUST LOST POWER AND THE CHECK ENGINE LIGHT CAME ON. 1. CHECK ENGINE - REDUCED ENGINE POWER 2. SECONDARY COLLISION BRAKE SYSTEM MALFUNCTION WE HAD TO PARK AND WAIT FOR THE TOYOTA DEALERSHIP TO COME AND TOW IT TO THE SERVICE CENTER. AT THIS POINT I DON'T KNOW WHAT WAS WRONG OR WHY IT JUST CUT OUT WHILE DRIVING. I AM VERY CONCERNED AND CAN ONLY HOPE TOYOTA CAN ADDRESS THIS OR REPLACE THE CAR.

NHTSA ID

11384736

Incident

Dec 23, 2020

Mileage

4,000 mi

BLIND SPOT MONITORING IS NOT WORKING. TOOK IT TO DEALERSHIP THY SAID IT NEEDED RE-CALIBRATION BUT IT STILL DOESN'T SEE SEMI TRUCKS. MY WIFE ACCIDENTALLY RAN ANOTHER WOMEN OFF ROAD BECAUSE SHE TRUSTED THIS TOYOTA SYSTEM. SYSTEM IS CURRENTLY STILL WORKING INTERMITTENTLY.

NHTSA ID

11374846

Incident

Nov 13, 2020

Mileage

4,800 mi

HIGHLANDER LE 2020 CAR HAS A BIG SAFETY ISSUE.WHEN I TURN OFF ENGINE WITH GEAR CHANGER IN D POSITION THE GEAR GOES IN N NEUTRAL POSITION WHILE STILL IN D POSITION WITHOUT GIVING ANY ALERT NOISE.I PARKED MY CAR IN 3RD FLOOR OF A PUBLIC PARKING WHERE THE FLOOR HAD SLOP, AND TURNED OFF ENGINE IN D POSITION BY MISTAKE AND STARTED READING AN EMAIL IN MY CELLPHONE WITHOUT LOOKING OUTSIDE OF CAR. THE CAR DIDN'T GIVE ANY ALERT NOISE SAYING THAT THE CAR IS TURNED OFF IN D POSITION.MY WIFE AND SON HAD EXITED THE CAR AND WERE WAITING FOR ME TO EXIT WHILE I WAS READING MY EMAIL IN MY CELLPHONE.I HEARD MY WIFE AND SON SCREAMING " STOP THE CAR" STOP THE CAR" WHEN I LOOKED OUTSIDE AND SAW THAT THE CAR WAS ROLLING BACK TOWARDS OTHER PARKED CARS. I STOPED THE CAR AND TURNED ON ENGINE AND MOVED CAR FORWARD AND SHIFTED THE STICK TO P POSITION. I WAS REALLY SUPRISED WHY THIS CAR DIDN'T GIVE ANY ALERT NOISE THAT THE CAR WAS ROLLING BACK WHEN ENGINE WAS TURNED OFF IN D POSITION. THIS ISSUE WAS GOING TO BE A BAD DISASTER FOR ME IF MY WIFE AND SON HADN'T SCREAMED TO LET ME KNOW THAT THE CAR WAS ROLLING BACK ON 3RD FLOOR OF A PUBLIC PARKING.THE ONLY ALERT I NOTICED IN THAT TIME WAS A SMALL POP UP ON DASHBOARD WITHOUT ANY NOISE. I CALLED TOYOTA CORPORATION AND THEY SAID THAT THERE IS NO ANY PROBLEM WITH MY CAR AND THAT THIS CAR DOESN'T HAVE ANY SAFETY PROBLEM.FOR SURE SOONER OR LATER THIS WILL BE A BAD DISASTER FOR SOME CAR OWNERS OF THIS MODEL. I DON'T HAVE PEACE OF MIND WHEN MY WIFE DRIVES THIS CAR WITH MY KIDS INSIDE. PLEASE SOLVE THIS BIG SAFETY ISSUE FOR ME AS TOYOTA CORPORATION DOESN'T ACCEPT THIS ISSUE AS A SAFETY ISSUE. THE TOYOTA DEALER SERVICE MANAGER SAID THAT THIS PROBLEM IS SOFTWARE PROBLEM AND MUST BE REPORTED TO TOYOTA CORPORATION, BUT CORPORATION SAYS THAT THERE IS NOT ANY PROBLEM. EVEN 1980'S OR 1990'S CAR WHEN YOU TURN OFF THE ENGINE IN D POSITION THE CAR GIVES NOISE ALERT.

NHTSA ID

11341514

Incident

Jun 18, 2020