2025 Toyota Grand Highlander Lemon Law Case Study: Buyback in New Jersey

2025 Toyota Grand Highlander Repair History: What the Repair Orders Show

Visit 1: August 15, 2025

• The owner reported that the rearview mirror was making a buzzing or humming noise, as if something was loose.
• No diagnosis or repair work is documented for this visit.

Visit 2: September 9, 2025

• During this visit, multiple overlapping concerns were addressed.
• Regarding the rearview mirror buzzing noise, the technician found a plastic trim cover directly above the mirror that was loose and not fully seated in its grooves.
• The trim was removed, inspected for damage (none found), and reinstalled, eliminating the noise.
• Regarding a separate complaint of multiple warning lights on the dashboard and the car struggling to accelerate, the technician found DTC P30111E (HV battery block 1 circuit resistance out of range).
• The HV battery cooling vent points were checked and found clear, but both HV battery fan filters were found very dirty with hair debris.
• The filters were cleaned and the concern was noted for continued monitoring.
• Separately, the owner reported warning lights including an airbag malfunction light, a driver monitor warning, and a headlight warning appearing on startup that would persist unless the vehicle was restarted multiple times.
• There was also an internal short in the millimeter wave radar sensor assembly that caused it to operate improperly; the assembly was replaced and the vehicle was road tested for 14 miles.
• A malfunction inside the airbag ECU was found to be keeping the airbag warning light on and interfering with other driver-assist systems. The airbag ECU was replaced and the system was recalibrated, followed by a successful road test.
• After a road test of over five miles, a final check for the driver monitor malfunction message showed no active, pending, or stored fault codes, and the vehicle was working normally at that point.
• Safety Recall (rear view camera image may freeze or not display) was also performed, with the parking assist ECU software updated.
• All documented concerns were addressed, and the vehicle was returned to the owner.

Visit 3: November 18-19, 2025

• The owner reported a recurring system error message on the dashboard.
• The technician scanned for DTCs and road tested the vehicle.
• The technician noted that an EZPass transponder mounted close to the windshield camera may be contributing to the problem and suggested that the owner try driving the vehicle without the EZPass on the windshield to see if the message repeats.

Visit 4: December 8-9, 2025

• The owner reported that a driver monitor malfunction message was intermittently appearing.
• The vehicle was driven on the road for more than five miles and did not display any warning messages. A check for active, pending, or stored fault codes related to the malfunction found none. At that time the vehicle was functioning normally.
• Safety Recall (rear view camera image may freeze or not display) was also completed during this visit.

Visit 5: December 16-18, 2025

• The owner reported that headlight system malfunction and system malfunction messages were appearing on the dashboard.
• The technician diagnosed an internal failure in the airbag ECU, which was causing the airbag warning light to remain on and interfering with other vehicle drive systems.
• The airbag ECU was replaced, the system was recalibrated, and a road test confirmed the repair was successful.

Visit 6: January 7-9, 2026

• The owner reported that upon starting the vehicle in the morning, airbag malfunction, driver monitor, and headlight warning messages appeared on the dashboard, and that the lights would remain on unless the vehicle was restarted several times.
• The technician found an internal short in the millimeter wave radar sensor assembly causing it to operate incorrectly.
• The millimeter wave radar sensor assembly was replaced, and the vehicle was road tested for 14 miles.

Visit 7: January 21-28, 2026

• The owner returned with the same condition as the prior visit: airbag warning and headlight warning lights illuminating on the dashboard at startup.
• Wiring at connector K19 (CAN high and CAN low) tested in specification.
• Using a Pico scope, the technician noticed that the forward recognition camera would sometimes drop out of the CAN network after a number of key cycles.
• The forward recognition camera was replaced, and the vehicle was road tested for 50 miles with no recurrence.
• Repair completed.

Visit 8: February 9, 2026

• The owner reported that upon starting the vehicle in the morning, airbag malfunction, driver monitor, and headlight warning messages appeared and would remain on unless the vehicle was restarted multiple times.
• The airbag warning light was confirmed on.
• No repair work is documented for this visit.

Visit 9: May 29, 2026 – June 5, 2026

• The owner reported multiple warning lights on the dashboard and that the vehicle was struggling to accelerate, and the vehicle was towed in.
• The technician found DTC P30111E (HV battery block 1 circuit resistance out of range).
• The HV battery cooling vent points were confirmed unobstructed, but both HV battery fan filters were found heavily soiled with hair and debris.
• Both filters were cleaned and the DTC was cleared.
• Then the technician carried out the DTC P30111E confirmation drive and drove the vehicle for more than 55 miles. The DTC did not come back, and system performance was confirmed to be normal.

Visit 10: June 9, 2026 – Present

• The owner reported multiple warning lights on the dashboard, that the vehicle was struggling to accelerate and would not move, and the vehicle was towed in.
• The diagnosis is listed as ongoing.
• No repair work is documented for this visit at this time.

$71,697 Vehicle Buyback Secured

Key Case Facts

• Vehicle: 2025 Toyota Grand Highlander
• Purchased in: New Jersey
• Status at purchase: New
• Mileage at first repair: 531 miles
• Systems involved: Electrical, Engine, Body/Trim
• Repair attempts: 10 visits
• Days out of service: 53 days
• Manufacturer: Toyota
• Settlement type: Vehicle Buyback
• Settlement amount: $71,697 (Buyback)

Attorney on Record

Steven Nassi, Esq.

Managing Partner, Easy Lemon by RockPoint Law P.C.

Licensed attorney whose practice is limited to lemon law. Steven leads the Easy Lemon legal team and has overseen thousands of successful lemon law claims against major manufacturers including Audi, Volkswagen, Mercedes-Benz, BMW, and more.

2025 Toyota Grand Highlander Lemon Law Questions in New Jersey

Your Toyota May Have a Lemon Law Claim Too

If your Toyota keeps going back to the shop for the same problem, you may qualify under your state's lemon law, the manufacturer pays our fees, not you. We handle Toyota cases like this one regularly.