After coming to a stop the vehicle will not accelerate as it should. A severe loss of power as it will only advance very slowly for 10 to 15 seconds. This is always in an intersection, so it is dangerous. Seems to happen mostlyin hot weather when the A/C is on.

- Sun Prairie, WI, USA

There are two documented events, Jun 28 and Jul 02, but several others have been observed While moving forward -Exiting a private drive, from a stopped position -Turning right to merge into a traffic lane -The vehicle failed to accelerate rolling forward into traffic at idle speed only -There was no response from the vehicle when the accelerator peddle was depressed or re-depressed -Vehicle had to be -??coasted-?? to the right shoulder out of the way of oncoming traffic After traffic passed -While still on the road shoulder and the vehicle still running -It was a minute or two before the vehicle started to respond to throttle -When it did started to respond, it was laggy for about 30 seconds -Response remained laggy until the speed passed 20 mph and it started to respond as normal There were no vehicles or obstructions within range that should have triggered a vehicle control response There were no instrumentation or gauge cluster warnings indicating obstructions

- Ridgecrest, CA, USA

There is a huge hole in the undercarriage starting at the back of the vehicle and runs all the way to the front of the vehicle. Hole is large enough a child can climb in without anyone knowing and could possibly die if car is in motion.

- Denton , NC, USA

At speeds under 30 mph cabin air pressure builds in the cabin and creates a bass sound or -??cabin boom-??. The pressure hurts occupant ears as well and has made them sick after riding in the vehicle. This is a well known issue with the Grand Highlander. Toyota has not offered any acknowledgment or a fix.

- Gig Harbor, WA, USA

Rear glass seemed to shatter very easily. Almost no pressure caused this to happen. Caused an 8 week period with no glass. Repair has occurred. Others reporting same issue.

- Monarch, MT, USA

Sometimes the radio lose volume all the way. You could turn the volume all the way up, change stations, FM, Sirius and nothing happens. The only way that this issue goes away and you can go back and start listening is to turn off completely the vehicle, leave if off, for a few secs, then power on. turn on the vehicle. This is very annoying since if you are driving for a long period of time, you cannot turn off the vehicle to do this trick. I hope this 3.0 Toyota Multimedia works better and more reliable.

- Chula Vista, CA, USA

The vehicle is consistently making a low rumbling noise at 15-20 miles per hour.

- Greencastle, PA, USA

When driving under 40 mph mainly the vehicle has extreme ear pressure. Sometimes you can hear a rumbling noise along with the ear pressure. The ear pressure is so intense that I can no longer drive or ride in the vehicle. It is an extreme danger because I get headache, nausea and dizziness along with the ear pain, which could lead to an automobile crash. There was not a problem with my ears prior to driving this vehicle, I have had no issues in the past in any other vehicle with ear pressure or pain and it only happens in this vehicle.

- Salmon, ID, USA

I purchased a limited grand Highlander in October. With less than 500 miles I had a knocking noise when turning right and left. I took it into the dealership they were unable to find anything. However, after 5000 miles they found my axle was broken and replaced one. They had my car 29 days as part was in back order and I refused to drive it due to safety concerns. My AC fan in the back was also broken and has been repaired. I still hear knocking when turning however and the fan is still broken. filed the lemon law. I also saw a complaints about the vibrating part of the car which my hood also does. I feel like they should have a recall as there are many forums with broken axles.

- Kissimmee, FL, USA

the problem is the constant pressure felt in the cabin especially most at the driver side. the pressure is felt by my ears persistently when all windows, sunroof are closed. it's the worst when driving slowly (between 10 to 30 mph), any uneven road bumps magnify to constant "cabin boom". After a long (45 minutes) commute to work on local roads, my ears are hurt, humming persist for few hours. The dealer checked and suggested to open the vent to allow fresh air in cabin (turn off recirculating air button), but it didn't help. I felt this pressure problem the next day I bought it (on March 2, 2024) when drove to work. this could have been when I test drove it, but it was a short drive, I didn't notice. I test drove the other gas Grand Highlander, AWD, Limited trim on the dealer slot. it had the same problem. Dealer said they don't have fix for this while it's hurting my ears every cummute to work. the car mileage now is only around 500 miles.

- Cypress , TX, USA

Cabin boom noise reported from the first day of ownership whenever driving the vehicle under 50mph. Noise is a low bass frequency below 30hz that reverberates throughout entire vehicle, causing severe ear pain, headaches, nausea, and disorientation. The only way to tolerate driving this vehicle is to wear airplane pressure earplugs, which poses a safety concern for not being able to hear surroundings while driving. The cabin boom seems to be coming from the suspension. Dealership foreman and corporate field tech looked at vehicle and denied any problem, stating this was -??normal for this new vehicle-?? and refused to investigate or try any diagnostics. The cabin boom sound is recorded on video, and is such a low frequency you must use noise canceling headphones to hear it on video (confirmed by professional audio engineer). This sound/pressure can be heard and felt by other people in the car, unless they already have low frequency hearing loss. This problem creates physical illness and is a huge safety concern for this brand new model Grand Highlander. Dozens of people are reporting the same problem on Toyota forums as well for their new Grand Highlanders.

- Englewood, FL, USA

Not everyone has this issue but my car has this low pitch noise whenever I drive pass 40mph speed it makes a noise like I left my rear wind cracked open but all the windows are closed. Some people decided as -??cabin boom-?? and it gets louder when I speed up to 70-80mph. I can record the noise too, but I can-??t upload in here, it only allow me to upload pictures but not video-?? please help

- Richmond, VA, USA

Issue started as soon as we first received the vehicle. Speeds 0-35 on almost any road causes a low frequency rumble until around 40mph. The sensation is very painful to hear and at times its nauseating.

- St George, UT, USA

Reverberation noise, also commonly referred to by other owners as -??boom or acoustic boom.-?? The entire cabin vibrates as if a shock wave is being sent through it. Mostly occurred when hitting small to large bumps under 45 mph and also happens often while breaking (even on flat and smooth pavement). On highway over 50mph there is a constant pressure within the cabin that significantly effects the ears and makes me nauseous and gives me a dazed-like feeling. Every person that has been in my vehicle has asked me what was wrong with it. A Toyota service tech told me they didn-??t find anything wrong with it, but I still can-??t drive it for more than 20 minutes without feeling sick. Please help.

- Salem, MA, USA

While this is a beautiful car there are major safety concerns that needs to be addressed. When I drive my ears feel full like I-??m on airplane or driving on high elevation. And on top of that I feel EXTREMELY disoriented. That is not safe. I-??m driving my kids around. This is a family vehicle and I should not feel like that. I thought it was cabin pressure but it-??s not. The windows being down does not help. I-??m bringing it back to Toyota on Friday but pretty sure they will laugh and say that I-??m crazy. There-??s nothing worse than driving a car that-??s brand new and feeling like you are unwell the entire time. What a shame. You really missed it here Toyota. Please fix this there-??s a lot of people who are also dealing with this!!! DO SOMETHING. It doesn-??t matter how fast you go. The fullness is there.please fix this.

- Chester, NY, USA

Cabin pressure. Ears are popping very odd sensation. As if we were on an airplane. Regarding the cabin boom issue, in an attempt to describe it, to me it sounds/feels like when I'm in my other car and put one window down and get a strong pressure reverberation that is resolved when I crack a second window. Apparently this is called "wind buffeting" and Helmholtz Resonance. This is exactly how it feels in the GH, except there are no windows open. I've only had mine a couple days and l've noticed a strong pulsing pressure resonance going 45mph on a smooth road, plus low tones/ pressure when going over bumps at slower speeds. It wasn't there on the test drive because we drove a different model. opening the windows didnt help. Dealer ship has no clue.

- Chester, NY, USA

I have a brand new Grand Highlander Limited with a Panoramic roof, and since the day I took it home, I have noticed a deep bass sound and ear pressure/cabin pressure when driving below 40mph on residential roads. It is very low-frequency and causes headaches, ear pain, and ringing after driving the car. I have taken it to 2 separate dealerships for diagnostic, and they agree they hear the sound and feel the cabin pressure but state it is the vehicle's design. However, most owners aren't experiencing the same issue, so it's not a feature but more of a flaw in some of them.

- Roswell, GA, USA

I purchased the car in the middle of September 2023. Within a week of owning I noticed that there was a clicking sound under the steering wheel when I started to turn to the RIGHT from a stop. Several weeks later the clicking sound began when I made a turn to the LEFT from a stop as well. It happened all the time and gradually became louder. When I took the car in for the 5000 mile service and reported the sound, I was told that Toyota was going to change both front axles. The service manager could not tell me what the problem with the car was but that he was told by Toyota that the car was "safe to drive." I refused to drive the car until the axles were replaced and Toyota promptly provided me with a rental car. When the axles were replaced the car drove very differently. The steering was tighter and the car no longer felt like a "bathtub" on the highway. Previously, the car would float and have poor road feel, I worried about its response to an emergency maneuver and consequently drove the car very conservatively. I was disappointed that my new car did not feel like the Grand Highlander I drove as a test before purchase. Now with the replaced axles the car's response is similar to the test vehicle and I am much more confident in its emergency handling. I fear that there is a serious problem with some of the Grand Highlander's front end. I wanted to alert the NTSA on a potential hazardous situation, especially since Toyota is recommending that the affected cars be continued to be driven despite the identified problem with a major component.

- Westlake, OH, USA

New Grand Highlander started making popping noises when turning at approximately 1000 miles. Dealer has replaced axles twice saying they were defective and the issue remains. We were told there was an issue with the axles during manufacturing and they are now on backorder. Our car has been in the shop over 30 days and we are told it is not safe to drive until new axles are installed.

- Nixa, MO, USA

Very loud Popping/clicking noises when turning/accelerating from a stop. Only had 2,162 miles on the vehicle when this happened. While driving, it also felt like my front driver side wheel was wobbling-very unsafe. Called Toyota roadside assistance and had car towed to dealership. Lead service technician was able to reproduce the popping and clicking noise. Dealership opened a case with Toyota, and had engineers come look. 10 days later, they called to tell me that they have to replace CV axle. Car was in the shop 18 days total. This problem shouldn-??t be happening to a brand new car with 2,000 miles on it. There are MULTIPLE reports of this same thing happening to MULTIPLE Grand Highlander owners-on a -??Grand Highlander Owners-?? Facebook page. Some have had to have both cv axles replaced.

- Kilgore, TX, USA