2021 Toyota Highlander
Problems, recalls and owner-reported issues
Power train is the leading concern among 520 owner complaints filed for this model year. This is the highest complaint count among 25 Highlander model years with reports.
Of the 2021 reports, 16 involved a crash and 4 involved a fire. 18 people were injured.
What owners report most often
Recalls and investigations
Seats, mid/rear assembly, reclinerMar 5, 2026
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2021-2025 Highlander and Highlander Hybrid vehicles. The second-row seat backs may fail to lock into position during seat back adjustment.
A seat back that fails to lock may not properly restrain an occupant during a crash, increasing the risk of injury.
Dealers will replace the return springs in the seat back recliner assemblies, free of charge. Owner letters were mailed September 9, 2026. This is a phased recall. Owners may contact Toyota’s customer service at 1-800-331-4331. Toyota's numbers for this recall are 26TB06 and 26TA06.
Campaign 26V128000 on NHTSA.gov
TiresJun 18, 2024
Southeast Toyota Distributors, LLC (SET) is recalling certain 2021-2024 Highlander vehicles. The 20-inch accessory tires with an insufficient load rating for the vehicle's Gross Axle Weight Rating (GAWR) were installed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims."
Tires with an insufficient load rating can be overloaded and fail, increasing the risk of a crash.
SET will inspect and replace the tires and information placard, as necessary free of charge. Owner notification letters were mailed August 16, 2024. Owners may contact SET's customer service at 1-866-405-4226. SET's number for this recall is SET24A.
Campaign 24V452000 on NHTSA.gov
Air bags, sensor, occupant classificationDec 20, 2023
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020-2021 Avalon, Avalon Hybrid, Corolla, Highlander, Highlander Hybrid, RAV4, RAV4 Hybrid, Lexus ES350, Lexus RX350, Lexus RX450H, 2021 Sienna Hybrid, Lexus ES250, 2020-2022 Camry, Camry Hybrid, and ES300H vehicles. A short circuit may develop in the Occupant Classification System (OCS) sensor, preventing the front passenger air bag from deploying.
An air bag that does not deploy during a crash increases the risk of injury.
Dealers will inspect and replace the sensor as necessary, free of charge. Interim letters notifying owners of the safety risk were mailed in February 2024. Some final remedy owner letters were mailed October 31, 2024. Letters will continue to be mailed in phases through January 2026. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is 23TB15/23TA15 Lexus 23LB03/23LA03.
Campaign 23V865000 on NHTSA.gov
Structure, body, bumpersOct 26, 2023
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020-2023 Highlander & Highlander Hybrid vehicles. During normal vehicle operation, minor impact to the front lower bumper cover may result in the cover coming loose or detaching.
A detached front bumper cover can become a road hazard, increasing the risk of a crash.
Dealers will repair or replace the upper and lower front bumper covers as necessary, free of charge. Owner letters were mailed April 22, 2024. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is 23TB12/23TA12.
Campaign 23V720000 on NHTSA.gov
Representative owner complaints: other or unspecified
65 reports, newest first. Show all
Other or unspecified, Sep 28, 2026
Apple CarPlay: The touchscreen occasionally loses connection or fails to pair with Apple CarPlay and Android. I changed my chargers so many times thinking it was wire issue.
Other or unspecified, Sep 28, 2026
Beep alert went off first then on dash board it notified me not to press on gas pedal & sensory collision 2. Parked the car for three days after the 3 days when starting the car the beep notification was still there on dash board still same notification. Then my neighbor came looked at it and said the all Toyota have same issue with the AC. He advised me not to turn the AC on just use fan. He said that when AC is on part of the car where the air blow is freezing. Now it is concerning when winter comes to turn on the heater.
Steering, Other or unspecified, Engine, Sep 24, 2026
I bought a vehicle in cash three weeks ago at Universal Toyota located at [XXX] . Two days later, I called the sellers [XXX] and [XXX] to have a noise fix /checked. It turns out the transmission is bad/damaged and of course it's not safe to drive. Universal Toyota don’t want to fix it (expensive) INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Electrical system, Other or unspecified, Sep 3, 2026, fire
On August 24, 2026, my vehicle was parked, turned off, and locked for more than 6 hours in a parking lot. Without warning, the vehicle experienced a spontaneous thermal event/self combustion. The fire and thermal damage were entirely localized to the dashboard area inside the passenger cabin. The engine compartment, battery area and front mechanical components remained completely unaffected by the fire. The vehicle was off, motor was cold and car was closed and parked for about 6 hours when this incident occurred.
Other or unspecified, Aug 22, 2026
My system information warning signal and chime indicates that an unbuckled passenger is present in my front passenger seat when nobody is there. Additionally, buckling the seat belt does not turn off the signal and chime. The sporadic signal and chime can continue for a very long time before eventually stopping. However, after another 30 seconds or so, it can start again. This cycle can continue for over an hour. It tends to occur more frequently above 35mph, but can also occur under that speed. From my research, this problem appears similar to another recall (Recall #23TA15 / Campaign 23V-865000), however my VIN currently isn't included in that recall.
Structure, Other or unspecified, Aug 8, 2026
This is a formal report of Recall Non-Compliance regarding Safety Recall 23V-720 (Toyota Recall 23TA12) on my 2021 Highlander Hybrid. An authorized dealership performed the recall on May 6, 2024, utilizing Op Code 23TA12R1 (Inspection & Install Fasteners). The dealership only addressed the lower bumper and failed to properly remedy the upper bumper retention tabs, stating it isn’t part of recall. The upper bumper cover has completely separated from the fenders during normal daily driving. The upper plastic mounting slots are torn out and clips will not hold. The dealership is refusing further repairs, instructing me to file a car insurance claim or pay a body shop myself to correct an un-remedied federal safety defect. The vehicle currently remains an active structural road hazard because the official recall remedy completely failed to secure the bumper assembly from detaching. A TAS case has been opened at the dealer, but federal intervention is requested to ensure recall compliance.
Other or unspecified, Jul 27, 2026
Transmission is shifting very hard including a clunking noise from first gear.
Electrical system, Structure, Other or unspecified, Jul 1, 2026
The back hatch of the car has issues closing regularly. Nearly half of the time you push the button to shut the back hatch when it is open it will not close and has to be shut manually. Typically, it shuts an inch or two and then beeps at you and when you push the button again nothing happens but beeping. This is an issue because it is very difficult to close. Even as a 6' 200+ lb man who does strength training regularly, shutting the back hatch is difficult to do manually let alone for my much smaller wife. This has let to her having to ask for help from strangers in a parking lot to help close the door which is unsafe, particularly since we have small children. Toyota has acknowledged that this is a known issue and have stated that there is nothing that they can do to fix it. This acknowledgement came when the car was very new and my father was the owner and again just a few months ago when we brought up the issue again with Toyota.
Other or unspecified, Jun 25, 2026
Have been having issues with my 2021 highlander power liftgate strut failure. It will not open at times unless you have to repeat pressing the button. It makes a noise that you know it is definitely not working right. This has been going on for three years and the service department keeps telling me it is working fine for right now...
Other or unspecified, Jun 6, 2026
Car has stopped while pumping gas seems to be specifically after rain. There was a heavy rain and immediately after while pumping gas car was not able to start. Received message steering power low. Happened 3 times after first incident while pumping gas. Car was checked by a mechanic and believe it might be a defect with a part called purge flow ? After part was inspected all check engine lights and alerts on cars went away for a few weeks. Once again we had light rain and the same issue restarted , with unable to power car after pumping gas
Other or unspecified, Engine, Apr 30, 2026, fire
My vehicle was parked for about an hr 30 min , and it started smoking from dashboard area and immediately went into flames .
Structure, Other or unspecified, Feb 25, 2026
I bought this vehicle used on 04/23/2024 with 18,596 miles on the odometer. When I was inspecting the vehicle prior to delivery at the dealership, I noticed a crack low on the windshield. The dealership replace the windshield prior to my taking delivery of the vehicle. In the spring of 2025 I had a crack develop in the windshield and had to have it replaced. Another crack has since developed (it is now 2/25/26), and I will, once again, have to have the windshield replaced. I have not driven on any freeways recently, so no high-speed travel. I have been driving for over 40 years and have never had this frequency of windshield failures. I have become aware that this issue is discussed by numerous newer model year (2021, 2022, 2023, etc) Toyota Highlander owners. Some have replaced their windshield multiple times like me. It would appear that there may be an issue in the design/aerodynamics of the front/windshield or a defect in the structure of the body that supports the windshield, that leads to this increased frailty of the windshield. I would very much like to see the NHTSA look into this issue and to force Toyota to look carefully at the high number of windshield failure incidents in these vehicles.
Suspension, Other or unspecified, Service brakes, Feb 10, 2026
•The transmission malfunctioned and developed an abnormal internal noise at approximately 67,000 miles, which is an unexpected failure at low mileage. The vehicle had been properly maintained and had no prior mechanical issues. Atlanta Toyota inspected the vehicle and confirmed the transmission had failed and required full replacement. The dealer also stated that as a result of the transmission failure, other related components showed excessive and abnormal wear. A second independent service center inspected the vehicle and confirmed the same diagnosis. The vehicle is available for inspection upon request. • This unexpected transmission failure created a serious safety risk due to the possibility of sudden loss of power, inability to accelerate, or complete transmission failure while driving. I rely on this vehicle daily to transport my child to school and to commute to work. A sudden failure while in traffic could result in becoming stranded or involved in a collision. • The vehicle was inspected by an authorized Toyota dealer and an independent service center. Both stated that the failure was unusual given the low mileage and normal use of the vehicle. • There were no warning lights, messages, or diagnostic trouble codes prior to the failure and afterward. The only symptom was an abnormal internal noise from the transmission, which began suddenly at approximately 66,000 miles. • The vehicle has received regular maintenance and is used for normal daily driving. There was no abuse, heavy towing, or unusual use that would explain a transmission failure at this mileage.
Other or unspecified, Service brakes, Engine, Feb 6, 2026
Vehicle makes a loud noise when under 65mph. Car shakes when breaking. Transmission needs to be replaced.
Wheels, Other or unspecified, Service brakes, Nov 20, 2025
I am reporting a serious safety defect involving the rear brake system of my 2021 Toyota Highlander, purchased from Penn Toyota (Glen Cove, NY). The dealership represented the vehicle as “Toyota Certified” and indicated that it passed all safety inspections. On November 15, 2025, I discovered that the rear brake rotors and pads were in extremely unsafe condition, showing severe corrosion, deep pitting, uneven pad wear, and structural deterioration. This damage clearly developed over a long period of time and indicates that the vehicle could not have passed a legitimate safety inspection at the time of sale. The rear brakes had to be replaced immediately to prevent potential brake failure. After replacing the rear rotors and pads, the vehicle passed the New York State Inspection on the same day, proving that the previous brake condition was unsafe and improperly inspected. This raises concerns of: Brake safety failure Improper or falsified dealership inspection Risk of reduced stopping power Potential loss of vehicle control I am submitting photos, the repair invoice, and the inspection result that confirmed the brakes were unsafe prior to repair.
Other or unspecified, Nov 3, 2025
Started with a transmission whining. Now is setting check engine light and jerking. Toyota knows there is a manufacturing defect in the UA80 transmission in these vehicles, but continued to sell them even after the released TSB# T-SB-0008-21, and refuses to repair this under warranty. Toyota is the only company offering replacement transmissions and therefore can set there own price to scam consumers. Please help us get a resolution.
Electrical system, Other or unspecified, Oct 24, 2025
The rear hatch of the vehicle started malfunctioning right when the three year manufacture's warranty was expiring on 08/2024 (very convenient). It would only open part way, barely or sometimes not open at all. One instance, my dog's tail got stuck in the hatch and it would not open. I had to force it open and thankfully I am able to do that. January of 2025 I took the car into Will's Toyota in Twin Falls, ID (where I purchased it new) and they told me that my option was to replace the hydraulic struts that were $1000 for the service. I took the car in on 10/23/25 due to the issue getting worse to have them replace the hydraulic struts. The dealership said they've had a lot of cars with the same issue. I just do not understand how a company can sell a car and a major part of the car fail conveniently when the warranty is to expire. Oh and I called Toyota customer service to complain and they said they don't keep track of this kind of thing...
Structure, Other or unspecified, Sep 24, 2025
During rain, the A-pillar and headliner show evidence of a leak. Open source research found this is likely due to faulty or poor quality components used in the roof rail system. My vehicle is completely stock with no additions or installations on the roof, just the factory rails.
Other or unspecified, Sep 19, 2025
Glass in sunroof exploded, loudly, while driving on interstate, at 65 miles an hour, showering passenger and driver in shards of glass. There was no impact to the sunroof. Just a loud explosion. Heavy traffic at high speed while covered in glass had to make emergency stop. Glass could have easily gotten in our eyes. Thank goodness the two of us were wearing a ball cap and a visor. Would gladly have car available for inspection upon request. We will take pictures.
Other or unspecified, Aug 10, 2025
Transmission. I believe the transmission is defective. A lot of customers has complained that toyota Highlander 2021 transmission is defective I was driving my car and the transmission went bad, I could not move my car again. I had to tow it to a mechanic and they diagnose that the transmission is bad
Other or unspecified, Jul 31, 2025
My car has been making a grinding and whining noise. I took it to the dealership and the service manager stated Toyota has been having a known issue on transmission and it will have to be replaced. The vehicle can stop working while i am driving and cause a very bad accident.
Other or unspecified, Jul 20, 2025
The sunroof glass on our 2021 Highlander unexplainably shattered on our ride home on 7/20/25 at approximately 12:30PM. Sky was overcast, and the temperature was in the mid 80's. We had just entered the highway and were still accelerating to highway speed. We were not near a pedestrian overpass where a rock could have been tossed from above. Broken glass edges are pointing upward. The sunroof was in the fully closed position and not tilted. Safety would have been at extreme risk if we did not have the inner slide closed. The vehicle has not yet been inspected by the Toyota dealership or insurance.
Other or unspecified, Jul 17, 2025
Transmission is making a wheezing noise
Other or unspecified, Jul 13, 2025
Air conditioning lines eroded and needed to be repaired after 26,000 miles/ 3 or 4 years. A/C line repair cost was $2500. Vehicle is garage kept and cleaned regularly during winter, it should not be having rusting problems, especially in this good of condition.
Other or unspecified, Engine, Jul 2, 2025
My 2021 Toyota Highlander experienced transmission problems mainly related to the transmission models. My vehicles reported issues such as whining or grinding noises, which were attributed to problems with the pinion shafts in the front carrier assembly.