2024 Toyota Grand Highlander

While driving my 2024 Toyota Grand Highlander Hybrid AWD at highway speed with only 16,755 miles on the vehicle, multiple warning messages suddenly appeared, including warnings related to the engine, hybrid system, AWD system, and other vehicle functions. The vehicle instructed me to pull over immediately and significantly reduced power output, making it difficult to maintain highway speed and safely maneuver through traffic. I was able to reach the shoulder and had the vehicle towed to a Toyota dealership. The dealer diagnosed a punctured radiator caused by a rock or similar road debris that allegedly passed through the front grille and struck the radiator. The dealer confirmed that coolant loss from the puncture triggered the vehicle's protective reduced-power mode. This failure created a significant safety risk. A sudden loss of power while traveling at highway speed increases the risk of rear-end collisions and other accidents, particularly in heavy traffic where drivers may not expect a vehicle to rapidly decelerate. There were no warning lights, messages, leaks, drivability concerns, or other symptoms before the incident. All warnings appeared suddenly at the time of failure. Toyota has declined warranty coverage, classifying the damage as a road hazard. However, I believe this may indicate a design defect. I have identified numerous reports from other GH owners describing nearly identical failures involving rocks penetrating the radiator through the front grille, often at relatively low mileage. These reports suggest the radiator may be inadequately protected from ordinary roadway debris. My concern is not simply radiator damage, but that a small piece of road debris encountered during normal driving can disable a critical component and cause the vehicle to enter a severe reduced-power mode at highway speed. I request that NHTSA investigate whether the front grille and radiator protection design of the Grand Highlander creates an unreasonable safety risk

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.

This is regarding recalls for my 2024 Toyota Grand Highlander Hybrid Platinum Max. The vehicle has been in the possession of Koons Tysons Toyota since December 23, 2025 (80 days as of 3/11/26), for repair of Safety Recall #25TA13 and #25TB13 NHTSA 25V744) involving the Panoramic View Monitor System/Parking Assist ECU. The dealership has explicitly informed me that the vehicle is unsafe to operate and have therefore kept it. Toyota and its authorized dealer have made three (3) repair attempts to correct this safety defect. Two separate replacement components were ordered and installed without resolving the issue. A third required component is currently on backorder with no definitive ETA or repair completion date, as the date keeps getting pushed. We are not being updated and are not receiving information from the dealership and Corporate about the details about the problem and nature of the delay. Toyota has obligations under federal recall law administered by the National Highway Traffic Safety Administration (NHTSA) to remedy safety defects within a reasonable time and at no charge to the consumer. An indefinite inability to complete a safety recall repair due to parts unavailability raises serious concerns under those obligations. Furthermore, a previous recall #25TA08 (NHTSA 25V595) which was supposedly completed on October 14, 2025 by the same dealership is showing as INCOMPLETE in the vehicle record with NHTSA.

The contact owns a 2024 Toyota Grand Highlander. The contact received notification of NHTSA Campaign Number: 25V595000 (Electrical System), and the vehicle was taken to the dealer on several occasions, but the dealer informed the contact that the part to do the recall repair was not yet available. The contact stated that the instrument panel had failed. Additionally, the contact stated that the vehicle was not driving properly, and the vehicle was shuddering while exceeding 70 MPH. The vehicle was taken to the dealer, where it was diagnosed with an axle leak, and the contact was informed that there was no warning light illuminated for the failure due to the instrument panel failure. The axle leak was repaired; however, the failure persisted. The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the failure, and a case was filed; however, no assistance was provided. The failure mileage was approximately 9,000.

In the middle where the car chargers are – the one in the center isn’t working but the one to the right is. When doing maps, the visual map disappeared and just showed where to turn – happened about 2-3 time. Today the entire screen went black – no radio, phone, maps, nothing. No way to operate it at all. This is unrelated to the current recall that addresses the speedometer / display right behind the steering wheel.

The contact owns a 2024 Toyota Grand Highlander. The contact received notification of NHTSA Campaign Number: 25V595000 (Electrical System); however, the part to do the recall repair was not yet available. The contact stated that while driving at various speeds, the instrument panel failed to show critical information as intended. No warning light was illuminated. The vehicle was taken to a local dealer, where it was diagnosed and determined that the failure was recall-related; however, the parts were not available for the recall repair. The manufacturer was not made aware of the failure. The failure mileage was approximately 90,000.

My vehicle has been out of service since October 7, 2025 due to a complete failure of the instrument cluster (combination meter). This issue is related to SAFETY RECALL 25TA08. The instrument panel is fully non-functional, making the vehicle unsafe and inoperable. The vehicle has been at Toyota dealership for approximately three months, with no repair completed and no clear timeline provided. The dealership stated they are awaiting instructions from Toyota Corporate and cannot proceed independently.

I am filing a complaint regarding a safety recall on my Toyota vehicle. Toyota issued the recall notice on September 11, 2025, but as of today there is still no available remedy. Due to this recall, my vehicle has been deemed unsafe and undriveable and has been out of service since October 8, 2025. While a rental vehicle has been provided, I have been without my own car for several months with no clear timeline or resolution. I am concerned about the extended delay in providing a recall remedy for a safety-related defect and the lack of transparency regarding next steps. I am requesting that NHTSA review Toyota’s handling of this recall, including the prolonged lack of a remedy and the impact on vehicle owners. I believe this delay is unreasonable and warrants further oversight.

The contact owns a 2024 Toyota Grand Highlander. The contact stated that upon starting the vehicle and reversing, there was an abnormal banging sound coming from the vehicle. While attempting to reverse, the vehicle failed to move, but the vehicle was restarted and operated as designed. While driving, there was an abnormally loud clanking sound coming from the vehicle with the “WRENCH SYMBOL” displayed. There were other unknown warning lights illuminated. The vehicle was taken to the local dealer, who was unable to duplicate the failure. The vehicle was not diagnosed or repaired. The contact stated that the vehicle would be taken back to the local dealer for additional diagnostic testing. The manufacturer was not contacted. The failure mileage was approximately 18,000.