2020 Toyota Highlander Complaints

SERVICE BRAKES — Filed 10/02/2026

We were behind a vehicle that had come to a rolling stop because the vehicle in front of him had hit the person in front of him , we were going about 25 miles per hour and about 2 car lengths from him . I applied the brakes but the vehicle failed to stop . It was as if I did not press the brakes at all. We rearended the person in front of us . The person behind us hit us as well . It was like we were on ice but we were not .

POWER TRAIN — Filed 08/14/2026

• What component or system failed or malfunctioned, and is it available for inspection upon request? The UA80 8-speed automatic transmission assembly (specifically internal mechanical wear resulting from front carrier assembly bearing degradation/torque converter heat buildup). No, the component and the contaminated transmission fluid are currently being replaced at the dealership. • How was your safety or the safety of others put at risk? The severe mechanical wear and metal-on-metal degradation inside the transmission create an imminent hazard where the vehicle can experience sudden slipping, severe hesitation, or a complete, unexpected loss of motive power while traveling at highway speeds. This loss of acceleration in active traffic creates an immediate risk of a rear-end collision and leaves passengers stranded in an unsafe traffic pattern without warning. • Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. A professional diagnostic inspection confirmed that the transmission fluid was catastrophically low, and the assembly sustained severe internal damage via metal-on-metal contact with metal shavings actively circulating throughout the unit. • Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The vehicle has been inspected and diagnosed by a service facility. It has not been inspected by the police or insurance representatives, as no crash has occurred yet. However, this failure directly mirrors the mechanical defects acknowledged by the manufacturer in Toyota Technical Service Bulletin T-SB-0008-21 and active federal class-action lawsuits. • Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There were no electronic dashboard warning lamps or no electronic dashboard warning lamps or visible signs of prior leakage/seepage.

STEERING — Filed 09/03/2026

The steering wheel heating component burned my fingers twice due to a malfunction. I had to attempt to pull over immediately because the steering wheel began smoking and the pain from my finger/hand. Dealership confirmed and fixed issue and the wheel is no longer available to inspect. I was burned while holding the steering wheel and could have steered into another car/pedestrian while driving. I brought it to Toyota and they confirmed a defect and replaced parts of the wheel. I did not bring this up with any other entity. There were no warnings on my dash/anywhere in the vehicle. Smoke appeared after I burned my finger each time. I have attached an image of the smoke, but the only smoke I could capture was limited due to safety issues and not wanting the heating component to be in-use. A video shows it better

UNKNOWN OR OTHER — Filed 07/31/2026

My 2020 Toyota Highlander only has 68,826 miles on it. It began making a high-pitched whining sound three months ago. I have taken it to my mechanic and he said the transmission is about to go out. Toyota is not willing to fix it out of good faith/Goodwill since my warranty has ended. My argument is I bought that car thinking it would go 150,000 miles at least.

POWER TRAIN — Filed 07/18/2026

My Highlander started making a whining noise while accelerating. Took it to my local dealership and was told I need a new transmission. I have 87,000 miles on it! Total cost = $8,000.

ELECTRICAL SYSTEM,UNKNOWN OR OTHER — Filed 05/09/2026

develop a high-pitched whine, shuddering, or harsh shifting between 25 and 45 mph, which can lead to premature wear or complete failure. Also, On/ Off from no where and stopped in the middle of the road

UNKNOWN OR OTHER — Filed 09/17/2026

I was traveling on hwy US1 South about 56-58 mph when I heard what sounded like a gunshot. I immediately slowed down and pulled off the road. As I drove off road on grass/gravel I heard crumbling of glass above on sunroof. The sunroof glass exploded. I called the nonemergency 911 for a police officer to come to the scene. I explained what happened and that there was no rock or large debris. He inspected and suggested I contact my insurance and if they needed a police report it would be in the system.

STEERING,FUEL SYSTEM, GASOLINE,ENGINE — Filed 09/14/2026

The contact owns a 2020 Toyota Highlander. The contact stated that while driving, the vehicle stalled and abruptly stopped in traffic at a traffic light. The driver exited the vehicle. The vehicle failed to restart, and the steering wheel was inoperable. The contact was concerned the vehicle might move forward. The check engine warning light was flashing, and the message “High Power Consumption” was displayed. The ignition and steering warning lights were illuminated, and “Low Power” message was displayed. The vehicle was running but failed to move. The contact associated the failure with NHTSA Campaign Number: 20V162000 (Fuel System, Gasoline, Engine) and Special Service Campaign 21TC05. Bystanders nearby attempted to assist the contact. The Emergency Services was contacted, and the Local Police responded to the scene. The insurance company was called and arranged a tow. The vehicle was towed to the local dealer, and the battery was replaced. Additionally, the contact spoke with the service director, management, and the technicians. The manufacturer was contacted by phone, and a case was filed. The failure mileage was approximately 29,296.

SERVICE BRAKES,FORWARD COLLISION AVOIDANCE — Filed 08/08/2026

Incident: [XXX] Conditions: Clear daylight, dry pavement, normal highway conditions Crash/Injuries: Allstate Claim #[XXX]; several people injured At approximately [XXX], I was driving my 2020 Toyota Highlander Hybrid at about 55 mph in the slow/right lane. The vehicle ahead suddenly made a hard stop. I immediately and forcefully applied the brakes for an emergency stop. My front-seat passenger, [XXX], also saw the danger and yelled for me to stop at the same time. Based on our recollection, approximately five seconds elapsed between his warning and the collision. Despite the rapidly closing distance, the Toyota Pre-Collision System (PCS) did not appear to activate. There was no audible warning/beeping, no flashing red warning, and no “BRAKE!” indicator on the dashboard. This was also observed by [XXX] and [XXX], who was seated in the second row and is particularly attentive to warning signals. The vehicle also did not appear to provide any automatic emergency braking or brake-assist intervention. Despite my immediate and forceful braking, the vehicle did not stop in time and collided with the vehicle ahead, causing significant damage and injuries. The forward-facing sensors and windshield were clean and unobstructed. There were no dashboard warning lights or known system malfunction indicators before the crash. I purchased the Toyota Plus service package after completing the required maintenance during the initial coverage period. All scheduled maintenance and inspections were performed on time by certified Toyota technicians. I was repeatedly assured that the vehicle, including the braking system, was operating normally. I request that NHTSA investigate the possible failure of the PCS, forward collision warning, automatic emergency braking/brake assist, and their integration with the braking system. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

ELECTRICAL SYSTEM,UNKNOWN OR OTHER,SERVICE BRAKES — Filed 05/28/2026

I was told by oxmoor dealership I had to talk to toyota corporate before I could get my car touched and that I did not need to talk to a lawyer. I called. Prior to the accident, the vehicle had been exhibiting multiple symptoms: an intermittent airbag warning light had illuminated briefly on the dashboard on a few occasions, and the vehicle had begun requiring noticeably longer physical distances to come to a complete stop at traffic signs and lights when not using cruise control. The vehicle was experiencing regular phantom seatbelt warnings—dinging as if a passenger was unbuckled when the seat was completely empty. The phantom seatbelt warnings i didnt think we're a big deal were occurring across multiple seating rows simultaneously in front and back. Directly preceding the crash, while making a turn, the vehicle swerved slightly. When I applied the physical brake pedal, the vehicle did not decelerate normally; instead, it experienced a sudden, abrupt forward acceleration surge into the building. I still haven't gotten my vehicle back or any information on what has been done or when I am getting my car back. I was also charged for an extra day for my rental when I was told to return it on the 16th. I haven't had a rental since then. I keep contacting oxmoor toyota and they said they were waiting on toyota corporate. I haven't had my car for a month. I tried to email. It was returned. My mailbox on my phone has been full of drs and other calls non stop. I texted online on the toyota page for the claim as well. Ive repeatedly asked the toyota dealership what is going on and I get we are waiting on corporate. I called toyota corporate again today and was told they would get back to me. I told the dealership. I am under medical care and in severe pain. Yes my safety was put at risk. Police and fire department were here the night it happened. They said they don't do a police report on private property. There is an insurance claim through state farm.

ELECTRICAL SYSTEM,SERVICE BRAKES,FUEL/PROPULSION SYSTEM — Filed 06/28/2026

I pushed the brake and swerved and the car kept going and a greater speed and surged into a house.

SEAT BELTS — Filed 05/31/2026

The contact owns a 2020 Toyota Highlander. the contact stated that while driving, the back driver side , the minor child occupant expressed an issue with the seatbelt which began to tighten, The vehicle was stopped to assist the minor child occupant, the seatbelt became tighter and the contact had to go into a store to get scissors to free the minor occupant from the seatbelt. The minor occupant sustained light abrasions from the seatbelt rubbing but no medical treatment was sought. The vehicle was taken to the dealer; however, the vehicle was not diagnosed of repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 59,000.

SERVICE BRAKES,FORWARD COLLISION AVOIDANCE — Filed 03/12/2026

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.

AIR BAGS — Filed 04/17/2026

The contact owns a 2022 Toyota Corolla. The contact stated that while driving at an undisclosed speed, a passing vehicle suddenly attempted to merge lanes and struck the vehicle on the passenger side door at approximately 45 MPH. No warning lights were illuminated. The contact stated that the air bags did not deploy. The contact stated that she sustained pain in her right chest, head, and left arm, and medical attention was sought. A police report was filed. The vehicle was towed to a local tow lot, where it remained for further investigation. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 89,083.

VEHICLE SPEED CONTROL,BACK OVER PREVENTION,FORWARD COLLISION AVOIDANCE — Filed 12/02/2024

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.

VEHICLE SPEED CONTROL,UNKNOWN OR OTHER,FORWARD COLLISION AVOIDANCE — Filed 05/03/2024

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

SERVICE BRAKES — Filed 10/06/2023

Was following a truck that was pulling a utility trailer. We had just stopped and started moving again when when he suddenly stopped. I had just sped up maybe going 10 to 15 mph when I applied my brake, the brakes did not engage until after I hit the trailer in front of me and jammed it into truck it was being pulled by.I had front end damage and radiator damage and the car was not drivable. I had noticed previous to this that at times at low speeds the brakes would not engage and would need to be double tapped to get them to engage. Could go weeks without it happening or could happen multiple times in a day. No consistency to the issue.

POWER TRAIN — Filed 02/11/2023

I pulled my vehicle into the driveway and stopped outside of the garage. I stepped out to fold my mirrors on both sides of the vehicle as the garage is very narrow. I also need to unload my belongings from the rear hatch. I walked around to the Right side mirror, folded it and headed to unload the hatch when the vehicle PULLED ITSELF INTO THE GARAGE; literally! I could not open the doors as they lock and the space is so narrow. The vehicle stopped when it hit the back wall of the garage. I immediately opened the door and turned the vehicle off. The Vehicle sounds an alarm and shows the message "Shift to park" if not in Park. This did not happen. I sat in the car putting my sunglasses away and unplugging my phone before exiting. If I had not put the vehicle in Park, I would have heard and seen the warnings immediately and the car would have moved immediately; not 30-60 seconds after exiting. Note: our driveway is flat

AIR BAGS — Filed 01/31/2023

Air bags didn’t deploy in severe accident. Vehicle is available for inspection. Air bags not deploying in accident could have led to injuries. No service or dealerships has seen the vehicle. Police didn’t inspect the vehicle. Insurance company is going to look at the vehicle on February 13, 2023. No indication of any service lights for air bags on vehicle’s dash.

UNKNOWN OR OTHER — Filed 06/03/2022

While driving around 60 MPH all the sudden I heard a loud explosion like a shot gun going off and then my sunroof exploding and shattering all over me and the interior of my car. There was no impact from another vehicle, rock, tree, anything. It just exploded into thousands of little pieces out of nowhere. It was terrifying. I was able to safely pull over. There were cuts experienced.

AIR BAGS — Filed 04/28/2021

While making a legal left turn on a green arrow, we were struck on the passenger side of our vehicle by a vehicle that did not stop at the red light.

STRUCTURE,UNKNOWN OR OTHER — Filed 08/04/2021

Several times pulling out from stop signs I failed to see cars coming from the passenger side. On August 4th 2021 I failed to see a car until it was directly in front of me and I collided with it. Wondering how I could have failed to see it I started doing research on the internet. I discovered others had this same problem also involving an accident. It was brought to my attention the mirrors are large and placed high in regards to the passenger window. I noted others sighted their height as part of the problem. I have a bad back and kept my seat low to ease getting in and out of the vehicle. My vehicle was totaled but the air bags never deployed and no one was injured.

STEERING,ENGINE,FUEL/PROPULSION SYSTEM — Filed 04/17/2021

In my 2020 Highlander I approached a stop sign at a "T" intersection behind 4 other cars. After stopping and looking to see road was clear of oncoming traffic, I pulled out and started my left turn. As I was turning into my lane the car engine turned OFF and the steering wheel was LOCKED in the left position. There was no power for the brakes, which left me jamming on the brake pedal as hard as I could only slowing the car slightly. The steering wheel was LOCKED LEFT and I thought I was going to break it trying to force it back. With no ability to move the steering wheel or brake, I braced myself as the Highlander continued turning in the left direction into the other lane. The result was a head on collision with a Mini Cooper, both cars totaled, and injuring both myself and the other driver. Highlander was investigated by forensic company in the employ of the insurance company, but they could not find any error in the cars CDR (Crash Data Retrieval) system.

STEERING,SERVICE BRAKES,ENGINE — Filed 04/17/2021

I WAS AT A STOP SIGN IN MY 2020 HIGHLANDER WAITING TO TURN LEFT ONTO A BUSY ROAD. UPON TURNING LEFT ONTO PA STATE HIGHWAY 999, THE HIGHLANDER ENGINE TURNED OFF AND THE STEERING WHEEL WAS "LOCKED" INTO A LEFT POSITION. THIS CAUSED THE CAR TO CONTINUE TURNING INTO THE OPPOSING LEFT LANE RESULTING IN A HEAD-ON COLLISION WITH AN ON-COMING CAR. WITH THE ENGINE TURNED OFF THERE WAS NO POWER STEERING, NO BRAKES, AND NO WAY TO UNLOCK THE STEERING WHEEL. THE COLLISION CAUSED MY CAR TO BOUNCE BACK AND SLOWLY FREE ROLL BACK TO THE STOP SIGN AS THOUGH I NEVER ENTERED THE ROADWAY.

POWER TRAIN — Filed 10/02/2020

TL* THE CONTACT OWNS A 2020 TOYOTA HIGHLANDER. THE CONTACT STATED THAT WHILE THE VEHICLE WAS TURNED OFF AND IN THE PARK POSITION IN ORDER FOR THEIR MOTHER TO UNLOAD THE TRUNK, THE VEHICLE SUDDENLY ROLLED AWAY IN REVERSE. THE VEHICLE ROLLED OVER THEIR MOTHER. ONCE THE INCLINE OF THE STREET WAS MORE OF A PLATO THE VEHICLE COASTED TO A STOP. THEY WERE ABLE TO CATCH UP TO THE VEHICLE AND RETURN THE VEHICLE TO THEIR HOME THE CONTACT STATED THAT THEIR MOTHER RECEIVED INJURIES TO HER FACE, RIGHT ARM, RIGHT HAND, LEFT RIB AREA, LEFT LEG, AND FOOT AREAS. MEDICAL ATTENTION WAS NEEDED. THE CONTACT HAD THE VEHICLE TOWED TO THE DEALER (HIGHLAND TOYOTA LOCATED AT 5500 45TH AVENUE DR, MOLINE, IL 61265; (309) 764-2481 ) WHO DIAGNOSED THAT NO DEFECT OR MALFUNCTION COULD BE DETECTED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND SENT AN INVESTIGATOR. THE APPROXIMATE FAILURE MILEAGE WAS 500.