Equipment Problems of Toyota Highlander - part 2

The part that failed is the driver side mirror cover. It has never been struck by anything and just flew off the side of the car while driving on the highway. This part flying off the car could cause an accident if striking a motorist, motorcycle, pedestrian. I do not have the part that flew off because I can't go back and pick it up off the highway. This just happened today. I have called a body shop to order a new part. The plastic part can only be replaced by purchasing the whole $1500 side mirror assembly. There was no sign that it was going fly off the car as there has never been struck by anything. It was in perfect shape just as the rest of the car.

See all problems of the 2022 Toyota Highlander 🔎.

My driver side rear door handle comes off when I open the door. I am having the dealership look into this on 8/28/2025.

See all problems of the 2024 Toyota Highlander 🔎.

All at once the windows, moon roof, blinkers, reverse lights, running lights and brake lights stopped working - also the automatic headlight function stopped working and we must turn on and off the headlights or risk draining the battery. It's interesting to note that the flashers work, but the blinkers do not. The wipers, radio, cruise control, etc. Are all fine. It appears all fuses associated with these items are intact - I don't know how to check the viability of the relays, but have been told it could be a relay and or a ground wire. I've purchased a new multifunction blinker headlight replacement switch and a master window replacement switch to see if this will resolve the issue - but the fact that it happened all at the same time concerns me that it could be electrical or wiring. All the wires under the dash are intact.

See all problems of the 2005 Toyota Highlander 🔎.

Whining noise upon accelerating. Diagnosed as bad transmission by a Toyota dealership. No warning indicator 62,500 miles.

See all problems of the 2020 Toyota Highlander 🔎.

The side mirrors (more on the drivers side) have a vibration in them no matter how smooth of a road in which I am driving. This causes the visual to be blurred and makes me dizzy. I have been driving for 30 years and not one other vehicle I have ever driven or owned has had this problem. I see that there are many other complaints online about this issue and this needs to be a recall as my dealership won’t deem it a problem under my warranty. This is a significant problem.

See all problems of the 2023 Toyota Highlander 🔎.

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.

See all problems of the 2019 Toyota Highlander 🔎.

Went to close the right rear passenger door and heard splashing. Door is leaking from somewhere and running down to the bottom of the door filling it with water on the inside.

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.

See all problems of the 2021 Toyota Highlander 🔎.

On August 3, 2025, the vehicle developed a loud humming noise. After an inspection on August 12, heritage Toyota informed me that the transmission had failed and would require replacement at an estimated cost of $9,000. This failure occurred only days past the five-year warranty and just 8,834 miles beyond the 60,000-mile powertrain limit. I immediately contacted Toyota’s brand engagement center (case #250814000192). Despite speaking with multiple representatives over several weeks, my inquiries were repeatedly delayed, escalated, or dismissed. At one point, I was even informed that further follow-up on my case would be deleted through Toyota website. Ultimately, I was offered 50% coverage of the transmission replacement. While I appreciate this offer, it does not fully address the seriousness of a transmission failure occurring under such circumstances. I also contacted heritage Toyota directly to request assistance, but my calls to the service manager went unanswered, and the dealership declined to provide any additional support. I believe this situation raises concerns about both product quality and customer care. A transmission should not fail in under five years with fewer than 70,000 miles, especially on a well-maintained vehicle serviced exclusively by Toyota. I respectfully request that Toyota be held accountable for this failure and that further review be conducted to determine whether this issue represents a larger pattern of premature transmission failures in Highlanders.

While driving, I began noticing a high-pitched whining or buzzing noise when pressing the accelerator, particularly at low speeds. The sound resembles an electric or remote-control car and rises in pitch with engine rpms. The noise disappears when I release the gas pedal. A mechanic initially suspected a wheel bearing, but after further inspection, it appears the noise is coming from the transmission or drivetrain. I later discovered that this issue is widespread among 2017–2020 Toyota Highlander models equipped with the ua80e/ua80f 8-speed automatic transmission, which has been associated with internal gear and pump whine. Toyota has issued customer support program pol19-04 and technical service bulletin t-sb-0008-21 addressing similar transmission whine and gear damage, but my vehicle is outside the standard 5-year/60,000-mile warranty and was not included in the extended coverage list, even though the symptoms match exactly. The problem appears to be a design or component defect within the ua80-series transmission, leading to premature wear and potential failure. This can affect drivability, safety during acceleration, and could result in transmission failure without warning.

My car only has just over 70,000 miles and my transmission failed. I get regular maintenance services when needed and never had any prior issues with transmission. I was driving when the transmission failed on me leaving me stuck on the road. I took the car to Toyota service center and was told it needs to be replaced and no further details.

Instrument cluster.

3 of the 4 door lock actuators do not work properly. Some don't lock and some don't unlock. The only door that currently works is the driver's door. If I don't realize that a door did not lock someone can break into my vehicle.

The ac stopped working on our 2019 Highlander. The vehicle has very little corrosion underneath or in the engine bay, yet the rear ac lines have corroded at a location where two different types of metal contact each other. This has been happening with many Highlanders after 5 years, and the cost to replace is expensive.

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.

I think there is odometer fraud by this company selling this car. [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2012 Toyota Highlander 🔎.

I own a Toyota and have always been a strong supporter of the brand — I truly believe Toyota’s reliability and build quality are unmatched. That’s why I was shocked and disappointed to discover that the paint on the roof of my car, especially near the sunroof, had started peeling. I left for a two-week trip, and when I returned in June 2025, I noticed that the paint had begun to flake and peel severely. The surface felt brittle and dry, and simply touching the area caused more paint to come off. It was clear that the damage had occurred during sun exposure while I was away. I later learned that Toyota had launched a customer support program related to paint issues on white vehicles, but I was completely unaware that it existed or that it had ended in 2024. Had I known, I would have brought the vehicle in sooner. My car only started showing signs of this defect in mid-2025, well after the program had expired. I’m reporting this because I believe the issue is still ongoing and more widespread than Toyota may realize. As a loyal Toyota owner and enthusiast, this experience has been incredibly frustrating and disappointing.

See all problems of the 2013 Toyota Highlander 🔎.

Transmission yes it’s available for inspection rite now on vacation on a very steep hill the transmission quit pulling at the top of the hill in the middle of a very narrow street and we had to ease backwards down to a place on the hill to turn around and get to level ground all this happened with no previous warning.

See all problems of the 2017 Toyota Highlander 🔎.

My 2021 Toyota Highlander, purchased with 16k miles, has a leak in the ac system in the rear of the vehicle (as of may 2025, at 3 years 10 months into the vehicle's service, with 28k miles). This pipe runs the length of the car and costs $2000-$3000 to repair. This was confirmed at an independent service center that used leak detection dye to identify the problem. I am finding multiple reports of people having this problem in young Toyota vehicles (<4 years old) and with low miles. I believe this is a design flaw and not indicative of normal corrosion, as the vehicle does not exhibit corrosion elsewhere in the under carriage.

Car is shaking heavily when stopped. Several misfires while engaging the brakes. Mechanic is telling me that he has seen many vehicles of this model with faulty purge valves.

So there was a service bulletin put out by Toyota in December 2020, about its ac repair. Well no notice was given to Toyota owners about this. Well fast forward to yesterday may 21, 2025, my mechanic told me that the ac lines to the rear were leaking and needed to be replaced as it was leaking refrigerant into the environment. Well after reading reviews and other folks problems it seems Toyota knows there is a problem with the ac lines and the type of material they used. Toyota should be issuing a recall notice on these cars to replace the ac lines so it does not pose an environmental hazard inside or outside the vehicle.

Hello, it seems that my vehicle is having a whirling noise when accelerating at different rpms. When I researched, it isn’t an isolated incident because many others online are experiencing the same issue with most of them being told that the transmission must be replaced. And further investigation, I found that the issue could be the trans axle assembly component which can cause issues if not replaced.

My car was parked in the driveway with the engine running. The engine was then turned off from outside the vehicle using the start/stop button. Once the engine stopped, the car moved backward down the sloped driveway and struck a pickup truck that was parallel parked on the street. I then entered the vehicle and attempted to shift into drive, but a warning appeared indicating the hybrid system was off and instructing me to put the car in park. Multiple attempts were made to drive the car forward, but instead, it was driving in reverse. The car would not move forward for approximately five minutes. I eventually turned the engine off and restarted it after a couple of minutes. After restarting, I was able to drive the car off the street.

Transmission is making a wheezing noise.

The component that failed is the roof rail clips that hold the roof rack to the vehicle (Toyota service bulletin t-sb-0040-24). The clips under the rail fail and cause water to leak into the headliner and down the a-pillars on both sides of the vehicle. It presents itself by causing water staining where the headliner meets the a-pillar cover. This issue presented itself in January of 2023, a few months after we bought the vehicle. Toyota bountiful (utah) tried to tell us that it is the sunroof drain lines that are clogged and required a $100 service to clear them which is an annual service. After some push back they found the problem with the roof rack clips. However, they only replaced the passenger side and neglected to repair both sides. April of 2025 the driverside failed and Toyota bountiful once again confirmed that the driverside clips failed. This creates a danger to the front occupants of the vehicle by allowing a possible mold issue within the cabin. Secondly, it allows water into the front curtain airbags of the vehicle.

Faulty transmission that Toyota doesn’t want to cover fixing.

Transmission failure; see attached customer support program bulletin no. Pol19-04 [xxx] (for 2018 Highlanders). My vehicle is a 2019, same body style, same transmission type, etc. Toyota dealership diagnosed my vehicle today and confirmed that the issue is the same as listed in the bulletin. I filed a case with Toyota (corporate). I have located thousands of other customers online reporting the same issue as described in this bulletin. I'm requesting that Toyota modify the bulletin or create a specific one for 2019. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

1- most of the time my rear hatch will not close unless you use the inside button - cost 1,198. 10 to repair. 2- my car started making a whining noise on acceleration. Took it Toyota and they said that I need to replace my transmission that it has an internal failure. Of course my warranty was of no use b/c it stopped at 100,000 miles. At the time of the inspection I was at 104,000. To get a new transmission it will be 7,425. 60 (not including the labor). I really wish the dealership could have been honest about this year model transmissions failing. I would have passed on this car.

When the ac system is turned on, the idle increases from 740rpm to 760rpm. It engages the torque converter in the automatic transmission causing the car to move forward on its own. This makes it difficult, whether you are in traffic or at a stop light where there are vehicles stopped infront of you. The driver has to press hard on the brake pedal to keep it from moving forward. The local Toyota dealership (hendrick service manager and two service technicians) said it was fine. Toyota brand engagement sent eric who is their corporate regional engineer to inspect the car. He said it was fine. I have spoke with Toyota brand engagement several times and at various levels who all say it functions fine as the idle is within limits. I asked Toyota for an idle specification sheet but no one (the local Toyota dealership, engineer from Toyota brand engagement, or ceo office of Toyota brand engagement) is able to produce an idle specification sheet for the vehicle. They continue to state it is normal. Toyota executive office case xxx information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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.

While driving my hybrid system malfunction, check awd, check engine, and pre-collision system malfunction all came on simultaneously, it also said to put in p. It wouldn’t accelerate so I had to have it towed to the dealer since it had only been 3 days since I bought it. It was sent to a Toyota service center where it took 3 weeks for them to diagnose and replace the high pressure fuel pump. I got the vehicle back, it drove fine for a week until the same thing happened again. It stopped accelerating, said to shift into p-only the hybrid system malfunction, check engine, and pre-collision system malfunction came up this time. I had it towed back to the Toyota service center since the problem clearly wasn’t solved and am awaiting a new diagnosis.

Toyota continues to knowingly not remedy an airbag sensor issue. My vehicle has the light on indicating it is suffering from the same recall. I bought this car from them in 2024 and they sold it to me with the knowledge that there was a safety issue. I’ve tried to find a solution as this is a major safety issue. Toyota took my money in full for the car, yet can only offer me a loaner for 25 days. They said in CA, it most likely won’t get fixed until the end of 2026. I don’t have money. I have one car and I need a vehicle to transport to work and kids to school. This is not right and this is not safe. A remedy for people in CA that won’t be fixed for two more years that is an actual safety issue , is not right. This is to document the safety complaint as the dealership continues to ignore the issue, and the 1-800 Toyota line continues to ignore it. All bbb complaints shows I’m not the only one. I can’t take a rental because they won’t pay me back, it’s not guaranteed, and I’m out another $40,000. They put people in impossible situations. The manager at the service center it’s your fault if you walk out of here without taking a loaner. You’re choosing to put your family at risk. And I said no, you’re offering me a loaner and you can’t guarantee a vehicle that will fit my family. I don’t know what to do.

The dictation had stopped working, can not longer send messages while driving.

Driver's side mirror has been vibrating since vehicle purchase. The issues causes vibration / shaking of the driver's side rearview mirror creating blurry traffic (in the mirror) at highway speed and is a serious safety concern. Dealership claims it is due to attachment of a blind spot mirror on my vehicle. However there are hundreds of posts online of other people discussing / complaining about this exact same issue on Toyota Highlanders and rav4. Other people are also reporting dealers claiming there is no fix. The issue can be fixed quiet easily by using a glue / tacky adhesive (or double sided tape) between the rearview mirror glass assembly and the backing plate of the mirror motor. Toyota should issue a recall since the issue is obviously prevalent and poses a safety hazard. Here are some links to other people complaining about the same issue since 2020: [xxx] [xxx] [xxx] [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The rear hatch has been causing me issues for quite a while. Last year, I would have to hit the close button once or twice for it to close. It would close a few inches, beep, and then stop. It has become much worse the last six months. I have to manually close the hatch myself because it won't go down all the way using the button. We took it to cedar rapids Toyota and they said this is a very common issue in this vehicle. They adjusted the hatch and lubricated it. Once they were done, they said it doesn't work any better. It costs over $1,000 to replace the parts and they can't get the parts until June because so many people are having the same issue. This vehicle needs to be recalled. Thanks,.