Toyota Highlander Complaints (2021)

550 consumer complaints on file.

#11759634August 26, 2026
POWER TRAIN
At 66,000 miles the transmission on my 2021 toyota highlander is failing. This is a known issue with these transmissions and toyota is actively working against people to help get the parts replaced at their cost.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759561August 25, 2026
STRUCTURE:BODY
Lift gate does not open. Hydraulic struts have failed and the lift gate will only open with significant manual effort. This means that the rear door cannot be opened from inside the car.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758715August 22, 2026
UNKNOWN OR OTHER
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758572August 21, 2026
POWER TRAIN
I made my last payment on my Toyota in June and the week I made my payment my mechanic confirmed a whining that had just started to be a transmission failure. After taking to another specialty transmission shop my transmission is failing. The internal bearings are failing just like the recall in other 2021 models. I’ve been told my VIN isn’t part of the recall but it is the same problem. I am having to pay $8500 on a transmission for a just paid off Toyota. I was so excited to be debt free. This is unacceptable. A Toyota transmission should not fail the minute it’s paid off. I’m very disappointed in Toyota. I contacted the dealership and the warranty help team to try to get part or all paid for and got nowhere. My car needs to be included in the recall of Highlanders with the internal bearing failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758405August 21, 2026
POWER TRAIN
Bought my 2021 Toyota Highlander XLE AWD 3 years ago due to supposed safety and reliability. Transmission went out right after warranty at 64,000 miles. Was not made aware that this is a common issue. Vehicle hard shifted and suddenly lost power when driving home with my 4 year old while making a left turn, and we were almost hit by oncoming traffic. Have not had prior issues in the past to suspect this would happen, so it was very sudden and unexpected. There has been no recalls or awareness for this which could have seriously injured my child and I. Went to take it to the closest mechanic right away to troubleshoot since the vehicle was not throwing any codes.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11757967August 19, 2026
POWER TRAIN
This vehicle experienced transmission failure at 43,000 miles. There is a technical bulletin regarding a known manufacturer defect for this Make/Model/Year (TSB-008-21) and we were told by our Toyota service technician that our vehicle displayed all of the same symptoms as those identified in the technical bulletin. Unfortunately the serial number for our vehicle was not included in the bulletin and we were four months outside of the power train warranty, therefore Toyota refused to cover the costs of replacing the transmission. We are requesting that TSB-008-21 is reviewed and expanded to cover additional vehicles including ours that were affected by this manufacturer defect that caused both a safety risk as well as a financial hardship for our family.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11757911August 19, 2026
POWER TRAIN
At around 75000 miles (less than 5 year old vehicle) the transmission exhibited a noticeable whine. After further research I presented the vehicle to the local Toyota dealer service department. An active technical service bulletin T-SB-0008-21 that describes a manufacturing defect with the front carrier assembly pinion shaft (essentially a catastrophic transmission failure) was matched to the symptom the vehicle was exhibiting. Further, my transmission serial number is directly within the affected production defect list. Failure to replace this transmission at significant cost (should not normally be routine maintenance on a highway driven vehicle at this age and mileage) could result in total loss of power and control causing the potential for a severe traffic hazard or accident.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11756472August 12, 2026
SEATS
The contact owns a 2021 Toyota Highlander. The contact received notification of NHTSA Campaign Number: 26V128000 (Seats). The contact stated that while the vehicle was parked, the contact attempted to lower the second-row seats, and the seat failed to lock into position and failed to recline as intended. The vehicle was taken to a dealer approximately five months later when a remedy became available, and the recall repair was attempted, but the dealer stated that the spring was replaced; however, the spring did not allow for the second-row seat to latch or lock securely. The manufacturer was not notified of the failure. The failure mileage was 58,900.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11755975August 10, 2026
SERVICE BRAKES
I had the dealer perform the repair described in Toyota Technical Service Bulletin T-SB-0059-23 (Hybrid Regenerative Brake Transition Feeling Improvement), which reprograms the brake actuator control module. Following this repair, the vehicle continues to exhibit the same lurching behavior at the same frequency as before the update. The TSB did not resolve the underlying condition. This is a safety concern because the unpredictable brake transition affects the driver’s ability to judge stopping distance and vehicle behavior in real time, particularly in traffic or on downgrades. The vehicle now has over 36,000 miles, placing it outside Toyota’s Basic Warranty; however, this is a safety issue that should be addressed by a recall. I am aware of numerous other Highlander Hybrid and Sienna Hybrid owners reporting the same defect, including reports that the same TSB reflash failed to resolve the issue for them as well.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11755623August 8, 2026
STRUCTURE:BODY, UNKNOWN OR OTHER
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11754750August 4, 2026
POWER TRAIN
My transmission started to have a noticeable whine at 53k miles. It became noticeably louder during acceleration. It was diagnosed at the Toyota dealership as a failing transmission. My vehicle was a few months out of warranty. I was told to contact Toyota corporate to ask for assistance. I was told since I did not have a service record at the dealership, they would deny my claim. I advised them the transmission was a sealed unit with no dipstick. My vehicle has been meticulously maintained with records. They said sorry, and the conversation ended.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11754631August 4, 2026
POWER TRAIN
Vehicle is experiencing a distinct, high-pitched mechanical whine or grind sound from the transmission during acceleration that increases in pitch with vehicle speed. The noise does not happen while cruising or coasting. This symptom aligns directly with Toyota Technical Service Bulletin T-SB-0008-21 ('Whine or Grind Noise From Transmission'). I am concerned about a premature, catastrophic internal bearing or gear assembly failure of the UA80 8-speed transmission while driving at highway speeds, which poses a severe sudden loss of propulsion safety risk.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11754021July 31, 2026
POWER TRAIN
High pitched whirring from engine when accelerating. Took to mechanic who diagnosed worn internal transmission bearings that could lead to transmission failure. No warning lights or indicators. Toyota is aware of this issue (see Toyota Technical Service Bulletin T-SB-0008-21) but is doing nothing in response.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753805July 30, 2026
POWER TRAIN
This vehicle was purchased new in 2021 with 4 original miles. Today it has 58,000 miles and has been maintained, per manufacturer recommendations, a certified Toyota dealership. At around 56,000 miles we noticed a slight whine in first gear. This was attributed to normal noise that we simply had not noticed. by 58,000 miles the while had extended to all gears and become more prominent. Research online shows that this is a known issue with the UH80 transmissions and has been since at least 2017. Toyota has a TSB for it (TSB-0008-21). This was not mentioned at the time of purchase or any of the various maintenance appointments in the last 5 years. This KNOWN issue WILL lead to complete transmission failure. This can happen while parked or in motion and can include the transmission shifting out of an active gear, locking into a gear and being unable to shift to another or park/neutral and there is no way to avoid it. I called Toyota corporate about this because I was not made aware of the TSB until July of 2027 and was advised that, although I was below the 60,000 mile allowance, I had surpassed the 60 month coverage period by two months and would not be granted a warranty exception (Toyota case number: 260710000821). Due to a known defective part on a vehicle that Toyota sold without advisement of said known issue, I am expected to pay $8,000 in repair fee's for a 40,000 dollar car that I have already spent over $20,000 on. The dealership confirmed the issue on 7/28/2026 and are attempting to use my 3rd party warrant which only covers parts. I will still be expected to pay for the labor costs which they expect to land between 2-3k dollars. Toyota is knowingly allowing a defect to persist that puts their customers and anyone else on the road at the time, at risk of serious injury and death. They expect their customers to cover the cost of repairs for an issue that they were aware of at the time of sale
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753720July 30, 2026
FUEL/PROPULSION SYSTEM
On July 25, 2026, while driving my 2021 Toyota Highlander Hybrid at high speeds on the freeway, the vehicle experienced a sudden loss of drive power accompanied by a check engine light and a severe hybrid system error warning. The failure occurred without any prior warning or degradation in performance, forcing an immediate emergency maneuver through traffic to reach the shoulder. The vehicle was towed to Toyota of El Cajon for diagnostic evaluation. The dealership service invoice details the following findings: - Primary Failure: Primary fuel injector failure (direct injection system). - Diagnostic Behavior: The engine experienced severe cylinder misfires under load at freeway speeds when the direct injectors were commanded on. - System Impact: Engine misfires triggered a hard safety shutdown of the hybrid system, immediately cutting motive power to the wheels. - Repair Executed: Replacement of the failed fuel injector assembly Safety Concern: A primary fuel injector failure at highway speeds causes an instantaneous engine misfire under load, which immediately triggers a hard hybrid drive system shutdown. Cutting motive power suddenly in heavy traffic without advance warning creates an extreme hazard for rear-end collisions. I am requesting NHTSA document and investigate this failure mode and its automated system shutdown logic.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753484July 29, 2026
POWER TRAIN
The contact owns a 2021 Toyota Highlander. The contact stated that while driving 25 MPH, there was an abnormal whining sound coming from the engine. The vehicle was taken to the dealer, where it was diagnosed with transmission failure due to a pinion shaft failure. The dealer determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 62,300.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753168July 27, 2026
UNKNOWN OR OTHER
Transmission is shifting very hard including a clunking noise from first gear.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11752018July 22, 2026
POWER TRAIN
The transmission has failed due to a defect within the transmission. Toyota is aware of the defect but refusing to assist owners claiming warranty expiration despite the transmission failure occurring due to a defect and not normal wear and tear. Toyota service bulletin accepting the defect. T-SB-0008-21
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11751494July 20, 2026
POWER TRAIN
The contact owns a 2021 Toyota Highlander. The contact stated that the vehicle was taken for oil filter maintenance and a spark plug change, and after the maintenance, the vehicle made an abnormal sound each time while accelerating. The dealer was contacted and diagnosed the vehicle with transmission failure. The vehicle was not yet repaired. The manufacturer was contacted and stated that the vehicle was out of warranty. The failure mileage was approximately 59,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11751011July 17, 2026
POWER TRAIN
I bought the vehicle used from a Cadillac dealer in Orlando with 72700 miles on it. At approximately 75000 miles my wife and I noticed a faint whine coming from somewhere. As it worsened, I researched the issue to find that Toyota has a TSB for a manufacturing defect in the transmission. As I understand it, the transmission can fail suddenly causing a serious safety concern. I need to fix this problem as soon as possible for my family’s safety but since I am out of the warrantee period and there are class action law suits in progress I am starting here. The cost of the repair, I am told will be $9000 a $11000. There should be a safety recall for this.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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