Toyota Grand Highlander Complaints

314 consumer complaints on file.

#11741021May 30, 2026
UNKNOWN OR OTHER
What component or system failed or malfunctioned, and is it available for inspection upon request? I was driving when I heard a loud boom, it almost sounded like a gunshot. Not noticing anything I continued driving. After a short distance I started hearing wind whistling. It was at this point I pulled over and saw my sunroof had shattered and there was a big hole. How was your safety or the safety of others put at risk? If I had not have the shade closed glass would have fallen into the car. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, I brought the car to the Toyota dealership. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? I did call my insurance company but I am not sure if they actually inspected the damage. They have been dealing directly with the Toyota dealership service department. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No, that's why I continued to drive until I heard the wind whistling
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11741014May 30, 2026
SERVICE BRAKES, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
Adaptive cruise control causes quicker wear on rotors. Had to have them replaced at 16,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11740395May 27, 2026
UNKNOWN OR OTHER
My 2024 Used Toyota Grand Highlander Hybrid Platinum Max was at a slight decline stopped at a stop sign in Echo mode. The whole car began to violently shake and lurching forward. No one was in front of me and my foot was on the brake or I probably would have run into a car in front of me. The dashboard then flashed a warning about the hybrid system overheating. The only way to stop it was to turn off the engine, then turn it back on. The car then began driving normally. I have also had an issue with hesitation felt while accelerating 0-40 mph with study throttle. Upon researching both issues, they should be resolved with TSB calibrations to my car of T-SB-0028-25 and T-SB-0017-24. This is not an error that would come up when doing a diagnostic check on my car's computer per research I have done. I took my car to get the updates at Toyota of Redlands, CA, and they refused to do them unless they could recreate them themselves. I called Toyota to report this, and they said that each Toyota dealership/service is privately owned at their own discretion. I was basically told to return if I experience it again. I do not want to experience this again and they wouldn't take my word on it anyways. I feel like next time I could injure myself or someone else if this glitch happened again. I therefore would like to implore to make this a mandatory preventative TSB calibration for cars that have had this reported/models/year which mine has. This goes for any TSB calibrations should be done preventatively, but especially ones that can cause a potential accident like T-SB-0028-25 and T-SB-0017-24. Here is information on why this would not show up on a diagnostic test: Your Toyota didn't generate an error code because the shudder is a software calibration issue rather than a component failure. The onboard computer (ECU) only triggers a check engine light or throws a Diagnostic Trouble Code (DTC) when sensors detect a hard mechanical or electrical failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11740216May 26, 2026
FUEL/PROPULSION SYSTEM, ENGINE
Failed System: Fuel Injector Failure (?) at high speeds, under load (uphill), causing an immediate and life threatening loss of power. While traveling on the highway, going up mountainous areas, the vehicle loses power and shakes violently. During multiple repairs/visits, the dealerships state that it is the failure of fuel injectors. They are replaced, and it happens again with the same explanation. Safety: Three times my family has lost power at 70mph while traveling uphill surrounded by many cars. The last event ended in a a scary and close interaction with an 18 wheel truck that was unable to stop as we lost power. Dealer Confirmation: The dealer has confirmed, on two separate occasions, that the fuel injectors needed replaced. The vehicle has 3,000 miles on it. At 2,000 miles, damage was found to the fuel injectors. They were replaced and the car was placed back in my possession. At 3,000 miles, the incident occurred for the 3rd time and damage was again found with the fuel injectors. Inspection: Dealerships as well as Toyota's field technician have inspected/repaired the vehicle 2 times and is currently at a dealership for the 3rd time. Warning messages: After the incident occurs, multiple warning lights appear (check engine and hybrid system malfunction).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11739910May 25, 2026
UNKNOWN OR OTHER
Component that failed: Sunroof How was safety at risk: I was driving my 2025 Grand Highlander on Sunday, [XXX} in the morning. While I was driving, my sunroof exploded, causing a loud noise and a blowout in the front part of the sunroof (pictures included). There was no debris on the road or any other reason for the sunroof to have exploded. This was extremely shocking and concerning - if we had not kept the sunroof shade closed, the glass from the sunroof would have fallen directly on myself and my wife as we were driving, potentially causing an extremely dangerous situation. The sunroof blew outward, NOT inward as would have been expected if something had hit it and caused it to shatter. I also found multiple forums where I discovered that this is a common problem: [XXX] [XXX] [XXX] The problem is widespread enough across models that there is an ongoing lawsuit regarding panoramic sunroofs: [XXX] The dealer and Toyota are claiming that it had to be an external source, but again, there was no debris in the area or any other reason to cause the blowout. The vehicle has been inspected by the manufacturer's field service technicians. It is currently still at the dealer, awaiting final decision on coverage for the blowout. There were no warnings. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11739850May 25, 2026
STEERING, LANE DEPARTURE: ASSIST
While driving my new Grand Highlander, I have experienced a serious and recurring safety issue. Even with lane assist turned off, the vehicle automatically steers to the right when I exit a regular highway — apparently misinterpreting the widening road as a lane shift. When this happens, the steering overrides my input and I am forced to pull the wheel hard to regain control and stay in my lane. This loss of steering control is dangerous and frightening, and I am formally reporting it as a significant safety concern that requires immediate attention.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11739699May 23, 2026
VISIBILITY/WIPER
On [XXX], while driving my 2024 Toyota Grand Highlander at approximately 45-50 mph on a gusty, high-wind day, the rear panoramic moonroof/sunroof panel blew out and shattered completely without warning. The failure occurred as I rolled up the vehicle windows during the wind gust. Rapid window closure created a sudden spike in cabin air pressure — a documented pressure differential mechanism — that forced the moonroof glass outward until it shattered. There was no external impact of any kind. The glass, which is not laminated safety glass, scattered throughout the interior with occupants present. Component is available for inspection. This failure is consistent with NHTSA Investigation PE13-035 (Kia Sorento panoramic sunroof spontaneous breakage), in which ODI found glass shattering while in motion to be a safety hazard warranting engineering analysis. The same pressure-based failure mechanism applies here. This is a documented pattern on this specific model. Lemberg Law [XXX] ) analysis of NHTSA complaint data confirms spontaneous sunroof shattering among the top defects on both 2024 and 2025 Grand Highlanders, with Toyota denying warranty claims by alleging "outside influence" — disputed by owners and attorneys alike. No recall currently exists for this component. The rear seat directly below this glass is a primary location for child safety seats. Non-laminated glass shattering over rear occupants — including infants — represents an acute and unacceptable injury risk. I request NHTSA open a formal defect investigation into the panoramic moonroof/sunroof glass on 2024-2025 Toyota Grand Highlanders and evaluate whether a safety recall is warranted. I have photographs and have notified Toyota Motor North America in writing. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11739160May 20, 2026
VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
2nd time ac system stoppped working with 6000. Miles on it after 3rd time same problem it will be under lemon law
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11738854May 19, 2026
SEATS
3rd row seats do not want to lock into position, there is also broken plastic pieces from the locking mechanism area. Seats do not want to engage or disengage when trying to lay them flat. This had been a reported problem on other highlanders. This has been an issue since we purchased the vehicle in 2024. This is a safety issue because I fear they would fail in a crash.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11738734May 19, 2026
ENGINE, FUEL/PROPULSION SYSTEM
On multiple occasions (four) my 2025 Toyota Grand Highlander Hybrid Max has failed to accelerate when I push the gas pedal. Once in traffic, which was extremely scary and a huge hazard. I have contacted the dealership about this issue and have not heard back from them. It has been almost 2 weeks. No warming lamps turned on and this issue lasted about 15 seconds each time. I press the gas, the car does not respond other than an audible RPM raising sound.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11737288May 12, 2026
POWER TRAIN
The electronic parking brake on my 2025 Toyota Grand Highlander intermittently fails to auto-release when shifting from Park to Reverse or Drive. Curiously, the system does respond to the gear shifter when returning to Park, as the brake will then engage or release as expected once cycled. This indicates a failure specifically in the transition out of the Park position. This intermittent delay or refusal to release prevents the vehicle from moving when expected, creating a potential safety hazard in traffic or during time-sensitive maneuvers. No dashboard warnings are present, and the issue occurs even when the driver's seat belt is buckled and the foot brake is fully depressed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11737282May 12, 2026
STRUCTURE:BODY:HOOD
“The aluminum vehicle hood exhibits severe, abnormal fluttering and vibration across the rear-center section when driving at highway speeds (approx. 55-70+ mph). This movement is constant and highly distracting, creating a safety hazard by drawing the driver's attention away from the road and causing concern about the structural integrity of the hood latch system. Despite having the manufacturer's recommended repair (T-SB-0111-24) performed by an authorized dealership, the condition persists without improvement. I am concerned the hood could eventually unlatch or detach completely at high speeds, posing a danger to myself and other motorists.”
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11736903May 10, 2026
STRUCTURE:BODY
While i was closing the trunk Did press area below my license plate to close the trunk, and got a dent below the license playe. Looks like very poor quality of steel being used
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11736129May 6, 2026
STRUCTURE:BODY
It was noted that the drivers door weather strip deteriorated even though the car is less than 3 years old/ 47,000 miles. The dealer and the Toyota customer care said it is likely related to external factors and not covered under warranty. I keep the car in a garage. We have had other cars that are well over 10 years old but do/did not have this problem. This can potentially lead to damage of other components. I see on the internet that other owners of this car have encountered this same issue . There have been 3 safety recalls on this model, related to air bag, instrument panel and rear view camera. These have been fixed. There have been at least 5 Toyota technical service bulletins ( TSBs) published on this model. These were fixed after I brought it up with the dealer/ manufacturer. I was not contacted by the manufacturer proactively. TSB 0017-24 : hesitation felt while accelerating from stop. A software update was performed. TSB 0060-25 : Fuel level logic enhancement. A software update was made. TSB 0028-25 : Shudder sensation at stop. A software update was performed. T-SB-0082-24: CV axle issue: it was fixed T-SB-0111-24: vibrating hood.I notice the issue but did not fix it since the fix involves placing a foam under the hood, which may not fix the underlying issue and might cause other issues. I believe these issues are related to the manufacturing oversight and especially more frequent because it is a first year model .
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11735710May 5, 2026
STRUCTURE:BODY, ENGINE
I was driving on in the left most lane on a highway at 70 miles speed with multiple trucks speeding from behind. My car suddenly lost acceleration and saw multiple warning messages on my car display. I barely managed to save my car from being hit by the trucks speeding from behind, applying emergency lights and steering my vehicle from the left lane to the right side of the highway. After towing the car to nearest dealer I understood that a stone went through the front grill of the car and it got the radiator converter leaking all the coolant and that created the loss of acceleration. This is a safety issue in the design of the car grill as it has unusually large holes leaving a critical part vulnerable and failure leads to loss of acceleration and a safety hazard. For similar other hybrid models in Lexus or Toyota Sienna the same grill is protected with smaller vents in the grill.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11735572May 4, 2026
UNKNOWN OR OTHER
Moon roof exploded while driving on highway. This is most likely due the to temperate glass used for the moon roof. No collision happened, no debris flying from somewhere else hit the glass, there was no cause for it shatter, the glass just exploded almost causing my family to get injured from glass shards falling down. Thankfully the cover was there and the moon roof wasn’t open.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11735436May 4, 2026
SERVICE BRAKES
The rotors started warping around 8K miles
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11734470April 29, 2026
STEERING, ENGINE, ELECTRICAL SYSTEM
While traveling at highway speed on I-75 northbound, the vehicle experienced a complete and total loss of electrical power. and propulsion. The following conditions were present simultaneously: - Complete loss of propulsion - Inability to shift transmission to neutral — vehicle could not be moved out of the active traffic lane - Complete loss of hazard lights — no ability to warn approaching traffic - Vehicle remained stranded in active highway traffic for approximately 15 minutes - Electrical power spontaneously restored after approximately 15 minutes - Vehicle was then driven off the interstate under its own power That was a life-threatening event. My wife and I could have been struck from behind by highway traffic with no warning lights, no ability to move the vehicle, and no way to signal distress. DEALER VISIT 1 — SATURDAY, APRIL 26, 2026 Dealer: Sarasota Toyota, Sarasota, Florida Complaint presented: Complete electrical shutdown on I-75 the previous day as described above Action taken by dealer: Performed recall repair for black screen issue Outcome: Vehicle returned to customer same day Post-repair symptom: Low voltage warning appeared on drive home from Sarasota Toyota Saturday afternoon Note: Dealer did not perform full electrical diagnostic. Dealer did not flag battery failure. Dealer did not retain vehicle for further investigation despite being informed of complete highway electrical shutdown the previous day. DEALER VISIT 2 — MONDAY, APRIL 28, 2026 Dealer: Germain Toyota of Naples, Naples, Florida Complaint presented: Complete electrical failure on I-75, low voltage warning after Sarasota repair, battery failure Findings: Battery confirmed dead. Alternator confirmed functioning normally. Dealer assessment: Condition described as unusual. Case escalated to Toyota Field Technical Specialist. Current status: Vehicle retained at Germain Toyota of Naples. Rental vehicle provided to customer.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11734380April 28, 2026
UNKNOWN OR OTHER
There is an ongoing problem with Android connectivity. I have brought this to the dealer’s attention multiple times, but they continue to claim that my phone is not compatible. However, this same phone connects flawlessly and consistently in my other vehicles, so compatibility does not appear to be the issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11734376April 28, 2026
VEHICLE SPEED CONTROL, POWER TRAIN, ENGINE
The vehicle hesitates and does not accelerate immediately from a complete stop. This occurs more frequently when the car is on a slight incline. The delay in acceleration creates a safety concern, especially when attempting to merge into traffic or pull out onto a roadway. I have reported this issue to the dealership multiple times, but they have not taken action because they have been unable to reproduce the problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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