2018 Toyota Highlander Problems

This vehicle has a UA80 8-speed transmission that has prematurely failed. This is a KNOWN issue to Toyota and they have refused to provide a fix. It is a safety hazard when all acceleration stops when attempting to merge into heavy traffic (as had happened to me last week) or on a highway traveling at top speed. I have only 27,000 miles on this automobile and it failed with NO WARNING! Within a very short time frame the following occurred: the check AWD system, TRAC off, check engine and the transmission fluid at a high temperature lights appeared on the dashboard. Shortly thereafter I experienced a burning smell, suddenly no acceleration with a high TAC response and vehicle jerking. My transmission is toast. This would have ended very badly for me as it failed on a highway at speed with heavy traffic. Toyota needs to address this and recall and replace. Shame on you Toyota!

While driving my 2018 Toyota Highlander Limited, the check engine light began flashing off and on. I was near an exit and drove off the freeway. I could feel the car (near the gas pedal) start shaking, then the power went down quickly... as I was trying to find a safe place to go. The farther I drove, there was less power until the car was going about 2 miles an hour. The check light continued flashing as I pulled into a parking lot. This was very scary as I'm sure the car would have just stopped on the freeway if I had not been near an exit as it just simply had no power left. (The check engine light has been on over a year and I took it to three different mechanics. Not one could fix it. This car wiped out my savings and now sits at a Toyota dealership)!

The brakes are very soft and unreliable. There is a recall #18V-211 dated April 2,2018. This recall did not include this specific car but the car was manufactured within a few days of the recall. After Toyota failed to repair the problem I took the car to a a private auto repair shop who replaced the Vacuum Pump. The brakes now work as they should. I beleve the recall should be extended to include more vehicle made about this time.

Car will not start due to message that says "Braking Power Low. Stop in a Safe Place" There have been recalls on 2018 Highlanders for the brake vacuum pump but it is not listed for my particular vehicle

I just got my vehicle inspected and successfully passed with no codes on 07/07/2026. Today 07/10/2026 as I was driving to work my vehicle began to jerk/ jitter and when into limp mode. I took it to a shop to have the codes checked on it and they said it was something to do with the transmission and they don’t specialize in that type of work. My vehicle has less than 45400 miles on it and been maintained regularly. I was told this was a common issue with these vehicles. I don’t know where to go to get this serviced. I called around to local shops with no luck at getting someone to fix or look at the cause of it.

First symptom I noticed was the car smell while it was running. I used a device to see what codes of any would pop up on a scan. It came up with codes tying into the fuel system. I then went to go fill up on gas couple days later and when going to start it back up it wouldn’t start. When it did start it would say engine losing power or steering losing power and then just shut off. I then looked up what that usually means and it made me look towards the alternator. I was told by a mechanic an easy way to see if your alternator was good was to start car and while running disconnect the negative on battery and if it stays running the alternator was still good. So I did that and it stayed running. I then looked up recalls for my vehicle and seen everything it was describing for the fuel system seemed to be happening. I am now filling this form out to get my vehicle looked at and fixed. I have a wife and 2 young daughters that we drive to school. It is not safe to be driving and hoping that us and others on the road will get to there destination safely.

While driving my 2018 Toyota Highlander Limited, the check engine light began flashing off and on. I was near an exit and drove off the freeway. I could feel the car (near the gas pedal) start shaking, then the power went down quickly... as I was trying to find a safe place to go. The farther I drove, there was less power until the car was going about 2 miles an hour. The check light continued flashing as I pulled into a parking lot. This was very scary as I'm sure the car would have just stopped on the freeway if I had not been near an exit as it just simply had no power left. (The check engine light has been on over a year and I took it to three different mechanics. Not one could fix it. This car wiped out my savings and now sits at a Toyota dealership)!

I just got my vehicle inspected and successfully passed with no codes on 07/07/2026. Today 07/10/2026 as I was driving to work my vehicle began to jerk/ jitter and when into limp mode. I took it to a shop to have the codes checked on it and they said it was something to do with the transmission and they don’t specialize in that type of work. My vehicle has less than 45400 miles on it and been maintained regularly. I was told this was a common issue with these vehicles. I don’t know where to go to get this serviced. I called around to local shops with no luck at getting someone to fix or look at the cause of it.

The contact owns a 2018 Toyota Highlander. The contact stated that while attempting to turn left or right, the steering wheel became difficult to turn. The check engine warning light illuminated, and the vehicle lost power. The contact waited for several minutes before being able to restart the vehicle. The check engine warning light remained illuminated. The failure had occurred several times and had become more persistent. The vehicle was taken to a certified mechanic, who diagnosed that the body throttle, air control system, and battery sensor had failed. The vehicle was repaired; however, the failures persisted. The manufacturer was not informed of the failure. The approximate failure mileage was 200,000.

There is a voice listening device or microphone on the headliner right above the driver's side seat which leaks water. I see there is a recall for a windshield but it could be coming from the sunroof.

While driving my 2018 Toyota Highlander Limited, the check engine light began flashing off and on. I was near an exit and drove off the freeway. I could feel the car (near the gas pedal) start shaking, then the power went down quickly... as I was trying to find a safe place to go. The farther I drove, there was less power until the car was going about 2 miles an hour. The check light continued flashing as I pulled into a parking lot. This was very scary as I'm sure the car would have just stopped on the freeway if I had not been near an exit as it just simply had no power left. (The check engine light has been on over a year and I took it to three different mechanics. Not one could fix it. This car wiped out my savings and now sits at a Toyota dealership)!

2018 Toyota Highlander Platinum started with a whine noise, vibration, and went into limp mode. The transmission has been noted to needing to be replaced. I am currently at 75,453 miles and started to hear the whine at around 65,000 miles. This car is not safe to drive.

The contact owned a 2018 Toyota Highlander. The contact stated that while driving at 35 MPH, occupied with her children in the rear passenger seats, the contact was attempting to merge onto the intersection, and a state trooper failed to yield at 55-60 MPH vehicle crashed into the front driver's side of the vehicle, causing the whole front end of the vehicle to detach from the vehicle. The contact stated that no air bags were deployed in her vehicle. The contact stated that she and her children sustained injuries, however under direct legal advice, she cannot disclose this information. Medical attention was required. The contact stated that a police report was filed. The contact mentioned the vehicle was towed to a collision center where it was declared destroyed. The manufacturer was not notified of the failure. The approximate failure mileage was 140,000.

My son and his friends were involved in a collision and the air bags did not deploy

The contact’s daughter owns a 2018 Toyota Highlander. The contact stated that while operating the vehicle, there was a clunking sound coming from the front driver’s side of the vehicle. The vehicle was taken to the local dealer, and the owner was informed that the struts needed to be replaced. The vehicle was not repaired. The vehicle was later driven to a local tire and battery service center who inspected the vehicle and informed the owner that the front control arms were rusted and needed to be replaced, and that the front axle was cracked. The vehicle was not yet repaired. The daughter was informed that the vehicle was unsafe to drive. The manufacturer was not yet contacted. The failure mileage was 101,000.

On 11/22/2025, We were done shopping and when we tried to open the trunk it made weird squeaky sounds and we tried to close it but it suddenly self destructed. There was a loud noise and it shattered instantly and there was glass everywhere.

First symptom I noticed was the car smell while it was running. I used a device to see what codes of any would pop up on a scan. It came up with codes tying into the fuel system. I then went to go fill up on gas couple days later and when going to start it back up it wouldn’t start. When it did start it would say engine losing power or steering losing power and then just shut off. I then looked up what that usually means and it made me look towards the alternator. I was told by a mechanic an easy way to see if your alternator was good was to start car and while running disconnect the negative on battery and if it stays running the alternator was still good. So I did that and it stayed running. I then looked up recalls for my vehicle and seen everything it was describing for the fuel system seemed to be happening. I am now filling this form out to get my vehicle looked at and fixed. I have a wife and 2 young daughters that we drive to school. It is not safe to be driving and hoping that us and others on the road will get to there destination safely.

The contact owns a 2018 Toyota Highlander. The contact stated that while attempting to turn left or right, the steering wheel became difficult to turn. The check engine warning light illuminated, and the vehicle lost power. The contact waited for several minutes before being able to restart the vehicle. The check engine warning light remained illuminated. The failure had occurred several times and had become more persistent. The vehicle was taken to a certified mechanic, who diagnosed that the body throttle, air control system, and battery sensor had failed. The vehicle was repaired; however, the failures persisted. The manufacturer was not informed of the failure. The approximate failure mileage was 200,000.

The contact owns a 2018 Toyota Highlander. The contact stated that while driving at 58 MPH, there was an abnormal popping sound coming from the sunroof, and it was discovered that the sunroof glass had shattered. Neither an independent mechanic nor a dealer was contacted. The vehicle was not taken to the dealer or an independent mechanic to be diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 165,000.

The windshield has warps and creates blurry vision. Glass has been replaced 3 times so far from Toyota Dealership and issue continues to be there. Car has been in service for a month now. Glass manufacturer: Pilkington

The contact’s daughter owns a 2018 Toyota Highlander. The contact stated that while operating the vehicle, there was a clunking sound coming from the front driver’s side of the vehicle. The vehicle was taken to the local dealer, and the owner was informed that the struts needed to be replaced. The vehicle was not repaired. The vehicle was later driven to a local tire and battery service center who inspected the vehicle and informed the owner that the front control arms were rusted and needed to be replaced, and that the front axle was cracked. The vehicle was not yet repaired. The daughter was informed that the vehicle was unsafe to drive. The manufacturer was not yet contacted. The failure mileage was 101,000.

UNKNOWN, squeaking in rear when going over bumps and uneven roads

Driving along [XXX] in Alabama to Mississippi, the Highlander completely shut off - the dash & radio were blank. The steering wheel locked up. Luckily there was no vehicles behind or beside us when this happened. Within seconds, the truck came back on. 15 minutes prior, we were sitting in a parking lot to eat lunch & while in idle, the truck shuddered a few times, like the gas pedal was pressed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

AUTOMATIC HIGH BEAM SYSTEM SHUTS DOWN FOR NO REASON. THIS IS NOT THE NORMAL CYCLING (HIGH BEAMS ON/OFF WHEN TRAFFIC DETECTED) OF THE SYSTEM. ICON INDICATING SYSTEM IS ON DISAPPEARS AND CANNOT GET HIGH BEAMS TO OPERATE. THIS HAPPENS ON DARK STRAIGHT ROADS WITH NO OTHER TRAFFIC AROUND. DEALER STATES THAT THEY CANNOT EXPLAIN WHY THIS HAPPENS BUT THEY WILL NOT ADDRESS THIS ISSUE. TOYOTA HAS REPAIRED THIS EXACT SAME ISSUE ON THEIR LEXUS LINE (REPLACE TURN SIGNAL STALK) BUT REFUSES TO ADDRESS IT FOR THEIR TOYOTA MODELS. THIS SHOULD BE CONSIDERED A SAFETY ISSUE.

CAR VIBRATION AT 40MPH AND UP AND BRAKE VIBRATION TOO .

MICHELIN TIRES DEFECTIVE TRACTION. TOYOTA AND MICHELIN REFUSES TO HELP WITH DEFECTIVE TIRES. MONRO MUFFLER DEEMED TIRES UNSAFE.

Driver side seat belt is difficult to pull out and often does not retract properly. This is a safety issue for the driver. Issue has been seen by local Toyota dealer who can confirm the problem. Stated that it will require a $500 repair, replacing the entire retractable unit of the driver side seatbelt system.

I was involved In a rear collision that then pushed me into a front end collision. The airbags and seat belts did not deploy or lock.

I purchase a 2018 Toyota Highlander in 2021. The vehicle had just over 8000 miles when purchased. The vehicle had manufacturers warranty but I purchased additional extended warranty in addition. I can review and find the dates but I don’t have it at the time I’m filling out this form. In any case, there was an issue with the passenger side door lock actuator not properly functioning. The door would not lock when using the key fob. Since the vehicle was under warranty, they replaced the actuator. In February or March of 2025, the passenger side rear door lock began with the same issues. The dealership diagnosed as another door lock actuator. The vehicle was still under warranty so the actuator was replaced. The actuator was ordered but not replaced until after the vehicle extended warranty had expired. Shortly before the second actuator was replaced, the front driver side lock began to give issues. It will not unlock or lock at all. The only way to get the lock engaged is to manually lock the door. In addition, the driver’s side rear door lock has quit functioning as well. I have reported the issue to the dealership but they have claimed they cannot repair since the warranty expired. The tech at the dealership (Rusty Wallace Toyota in Morristown, TN) told me that he has saw this issue in several highlanders. The safety issues is that the locks do not function unless manually engaged. If a child is in the rear seat, the door can be opened. When exiting the vehicle, the doors can be left unlocked inadvertently and unauthorized access can be gained to the vehicle leaving property at risk. I am in the process of getting these two no. Functioning actuators replaced but have been quoted a price in excess of $500 for the parts and labor. I have done some research and it appears this may be an issues on Highlander models 2009-2024. I can provide work orders to the actuators that have been replaced.

I CONTACTED TOYOTA AND COMPLAINED ABOUT THE SEAT AS IT GAVE INSTANT PAIN IN THE SPINE AND NECK AND VERY HARD TO DRIVE SITTING ON THE DRIVERS OR DRIVER SIDE PASSENGER SEAT. BEING TOO CURVEY IS NEITHER AGRONOMIC FOR ANY STANDARD SIZE HUMAN BEING NOR ALLOWS ANY REST TO THE BACKBONE. THE HEADREST IS VERY TILTED FORWARD, WHICH STRAINS THE SPINE AND NECK IMMEDIATELY. I HAD A TOYOTA HIGHLANDER 2005, AND I DIDN'T PAY MUCH ATTENTION TO ANY TEST DRIVE BECAUSE THE SEAT ON THE HIGHLANDER 2005 WAS VERY COMFORTABLE. BUT 2018 IS HORRIBLE TO DRIVE. I'M VERY MUCH REGRETTING BUYING SUCH A CAR THAT I CAN'T DRIVE WITHOUT HURTING MY SPINE AND NECK. THE TOYOTA SUPPORT SUGGESTED USING A CUSHION BETWEEN THE SEAT AND DRIVERS BACK, AND THE VENDOR OFFERED NO TO FIX THE ISSUE. I DON'T THINK I'LL EVER BUY FROM A BUSINESS THAT PUNISHES THE CUSTOMER THROUGH SELLING HORRIBLE PRODUCTS AND DECLINE TO TAKE THE RESPONSIBILITY TO FIX IT. I ENDED UP PAYING ABOUT $35000 FOR A NOT RIDABLE VEHICLE, AND I'M FEELING MISERABLE ABOUT IT.

These are Toyo Open Country P245/55 R19 tires that have been on my car from 10/23/2020 to now and have 54,600 miles on them. Remaining tire tread depth on this tire was measured using a machinists rule at 6/32" or 4.5 mm deep. The drivers front tire looked fine on my car during a general pre-inspection I did at 6:45 AM as I loaded the car with our luggage for a 7 day drive trip to Florida (app 920 miles). I will advise that I did not look at this tire in great detail during this check - just quick look to see if anything stood out that I needed to be concerned about for the drive. The drivers side front tire went flat after backing straight down a 60' long driveway. I removed the tire with the car in the street and took it to the tire shop where I bought these tires. The tire shop guys found several cracks about 1/2" long or longer in this one spot in the tire sidewall at the start of the tread. They had no idea why it cracked like that and had reported that they had not seen cracks like that in that location before in any tire. I had them pull the tire off the rim and put a plug/patch in it so I could get the car back up the driveway to repack our Florida luggage in the other car. No other tires show this cracking issue. I will replace the tires on 9/11/2023 with new tires. The tire could have blown out on I-10 at speeds of 70-75 MPH due to the almost immediate loss of air pressure due to the crack. There was absolutely no indication of any issues with this tire (or the other 3 tires) prior to backing down the driveway and the tire going flat. I was blessed that the tire lost pressure quickly just backing down the driveway and not on the Interstate highway. I drive the car - no one else. The tires have not been abused during the period they were installed. I rotate the tires every 10,000 miles. I do car PM on a 6 week schedule to avoid any such auto issues. I had just completed a PM about 1 week prior to this tire issue with all found OK.