My vehicle is rear-ended by a large earth mover branded as a Kenworth. My vehicle was then pushed into another. After the initial impact, my engine went racing above 5,000 RPM. It was disengaged from the transmission. I switched my car into neutral, shut my car off and the engine was no longer racing when I restarted the car. Because of an engine racing, I am concerned about the potential that somebody's transmission would be engaged and it could cause serious further injury.

Source: NHTSA complaint ODI #11648905 · view all complaints for this vehicle at nhtsa.gov

After adjusting the vehicle lock sound level in the settings, it completely disabled my key fobs and the panic function on the key fob. Had to take to dealer to fix. Dealer had never seen the issue before. Been reported online many many times. Dealers and Toyota refuse to acknowledge a known issue.

Source: NHTSA complaint ODI #11680482 · view all complaints for this vehicle at nhtsa.gov

New, strange noise started in Dec'25 (41K miles; 2yrs 9 months). No warning lights. Diagnosed as failed brake accumulator (first at an independent shop, later at the dealer). Apparently the accumulator is part of the full master cylinder assembly which must be replaced. Toyota has quoted $3,200 to complete this repair and is telling me it must be out of pocket.

Source: NHTSA complaint ODI #11739260 · view all complaints for this vehicle at nhtsa.gov

Purchased size 265/70R17 tires (Michelin Defender LTX M/S2) exhibiting severe highway vibration immediately post-installation. The vibration persisted continuously for two years across every rotation, posing serious handling and steering risks. For two years, local shop staff gaslit the customer, claiming an "out-of-round" tire or casing defect was impossible to avoid warranty obligations. During a visit in front of store management, staff repeated the claim in front of management. The customer then presented real-time technical data from Google on the spot, forcing staff to admit casing defects happen. Despite this, management cleared the driver to leave, assuring the vehicle was safe to operate with an infant inside. To obtain objective proof, an authorized TOYOTA dealership inspected the vehicle. The dealer verified steering, suspension, and alignment were completely sound and documented the root cause in writing: "Found front left tire has casing deformation." When escalated to corporate executives—including Robert Moyer and top management—an internal email chain revealed local shop management and corporate leadership actively placing profit over safety, contradicting logs and technical facts to deny warranty coverage. Confronted with dealer documentation and caught in their deceptive paper trail, the company fully refunded all tire replacement and balancing costs. Internal casing deformation is a critical safety hazard; belt/casing failure at highway speeds creates extreme risk of sudden tread separation or blowout. Dealership diagnostic documentation and the deceitful Executive email chain are available upon request. I also have video of shaking while on the freeway with my infant child in the car moments after Costco management assured me we were safe.

Source: NHTSA complaint ODI #11759490 · view all complaints for this vehicle at nhtsa.gov

The contact owned a 2023 Toyota 4Runner. The contact stated that while her father was driving under 30 MPH on a side road, the driver swerved to miss a deer. The vehicle drove off a hill, rolled over and landed on its top, and all the seat belts simultaneously unbuckled, causing all the passengers to hit their heads against the roof simultaneously. Additionally, the contact noticed an abnormal fuel odor. The contact stated that she was unable to exit the vehicle. The contact's brother assisted the contact in exiting the vehicle, and all passengers were able to exit the vehicle. The vehicle then caught on fire. The fire department arrived at the scene, but it was unknown whether the fire was extinguished by the fire department. The origin of the fire was unknown. A police report was filed. It was unknown whether the air bags deployed. The vehicle was towed and deemed a total loss. The contact sustained neck and back pain, bruises and headaches. The contact stated that the headaches could be due to an impact on the brain cyst in the back of the contact's head. The contact's son sustained neck pain, back pain and bruises. The contact's brother and father sustained unknown injuries. All the passengers went to the hospital the following day and were still receiving medical assistance. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 10,000.

Source: NHTSA complaint ODI #11715551 · view all complaints for this vehicle at nhtsa.gov

The contact owns a 2023 Toyota 4Runner. The contact stated that the driver's side door failed to lock using the key fob or the buttons on the door. The doors had to be manually locked and unlocked. The vehicle was taken to the dealer, where it was confirmed to be a known issue, and the locks were replaced. Shortly after the vehicle was repaired, the failure reoccurred. The vehicle was taken to the dealer, and the failure was confirmed; however, the warranty coverage only provided a repair for the driver's side door. The failure had occurred on the passenger door and the rear driver’s side door, and the repairs were not covered under recall or warranty. The vehicle was not repaired. The manufacturer was informed of the failure. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The approximate failure mileage was 77,000. The VIN was not provided.

Source: NHTSA complaint ODI #11762125 · view all complaints for this vehicle at nhtsa.gov

The Front differential need to be replaced. The dealership where we purchased the vehicle replaced the differential. When we got the vehicle back we still had the same problem. The car was making a groaning sound while turning to the right above 35 mph. And the whole car would shake and my wife said it felt like the car was going to fall apart. The vehicle also needed new sway bar bushings my guess is that is because the shaking caused by the bad differential. A car shaking that bad and the axle loose inside the differential seems like a huge safety issue. Also I found a tsb online for this exact issue. I found that our vehicles vin was part of the tsb. I sent that information to the technician that has been working with us and he was unaware of the tsb. And was upset that he replaced the front differential and was not made aware of the tsb from Toyota. For some reason he couldn’t see it I believe he said it was because the dealership is in the process of changing there computer systems. But from my understanding the tsb is just to put a damper in the differential so you can no longer hear the noise coming from the differential. This in my opinion is not fixing the problem with the differential the axle will still be loose inside the differential causing the vehicle to shake and probably wear out suspension components and tires. We also had 3 different sets of tires installed on our vehicle because of the issue with the differential. When we would take the car to the dealership they said that everything looked good and would tell us that if the car was shaking we should take it back to les Schwab and have them balance the wheels and it never seemed to fix the problem. In my opinion this poses safety issues if the axle fails while driving. Especially in our situation because we live in the mountains where we have many roads that don’t have guardrails and because a lot of the roads were we live are in canyons that fallow rivers and creeks.

Source: NHTSA complaint ODI #11630469 · view all complaints for this vehicle at nhtsa.gov