2025 Toyota Grand Highlander Electrical system Problems
- Complaints
- 6about this part
- Share
- 7%of 81 total for the year
- Median mileage
- 10,000miles
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 6 complaints about the electrical system of the 2025 Toyota Grand Highlander, 7% of the 81 complaints for this model year. Where a mileage was given, the median is 10,000 miles. 1 recall campaign on record is filed under a similar system.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“On 9/26 at about 10:15am, my husband and I were fully stopped at a red light with his foot on the brake. Without him touching the gas pedal, the car suddenly surged forward as if it had been accelerated. It stopped for a moment, then surged forward again. Because he was holding the brake, the car didn’t move much, but each surge caused a hard jolt that felt like being rear-ended. No other vehicle hit us.”
NHTSA complaint #11770201, filed 2026-10“While I was driving using the screen for the GPS the screen become black just sound. The volume got stuck and no image was displayed. Try to use manual control on steering wheel and they didn’t respond neither. Is not the first time that the screen freezes glows black or just glitches.”
NHTSA complaint #11741981, filed 2026-06“Missing the wire connector for the puddle lamp installation? although not a safety issue, would like to bring this to attention; wire connectors (and wires) missing on both driver and passenger doors? Not sure if this was a factory oversight, or an error in original wiring diagram of Toyota? If so, there could be other wires missing in the vehicle as well. Hopefully Toyota will look into this and propose a fix for their customers. Thank you”
NHTSA complaint #11669921, filed 2025-06“The contact owns a 2025 Toyota Grand Highlander. The contact stated while reversing, the back over prevention system failed to function as intended. The contact stated that the image was visible; however, there was no tone alert. Additionally, there was a message indicating that the Adaptive Cruise Control was unavailable and to see the dealer. The vehicle was taken to the dealer; however, the failure was not duplicated. The contact stated that the automatic braking system had independently activated. The contact stated that the failure had occurred several times. …”
NHTSA complaint #11664671, filed 2025-06, 10,000 miles“Radiator issue summer of 2025, when in back to back traffic at low speeds my vehicle overheated at a stand still took vehicle in to dealership with no real answers. The following summer 2026 same scenario but the engine was smoking. Took into dealership and they stated the connection for the radiator fan was disconnected which meant it was not colling the engine. A month later the AC is blowing hot air when AC is set to the coolest setting, scheduled another appt with dealership likely another radiator issue. Fuel gauge inaccuracy. …”
NHTSA complaint #11750413, filed 2026-07Related recalls
- 25V595000Sep 11, 2025Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2023-2024 Toyota Venza, 2023-2025 RAV4 Prime, RAV4, Highlander, GR Corolla, Crown…Covers: Toyota Grand Highlander 2024–2025, RAV4 2023–2025, Highlander 2023–2025 +14 more
Related service bulletins
- 11020657Jun 13, 2025The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service…
- 11019359Apr 18, 2025Some 2024 – 2025 model year Grand Highlander and Grand Highlander Hybrid vehicles may exhibit a condition where the Blind Spot Monitor (BSM) system is inoperative, there is a BSM…
- 11018356Apr 18, 2025Some 2024 – 2025 model year Grand Highlander and Grand Highlander Hybrid vehicles may exhibit a condition where the Blind Spot Monitor (BSM) system is inoperative, there is a BSM…
- 11019331Apr 2, 2025To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on…
- 11018328Apr 2, 2025To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on…
- 11016781Feb 10, 2025The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys…
- 11015495Feb 10, 2025The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys…
- 11014209Jan 29, 2025Some 2021 – 2025 model year Toyota vehicles may require the download and installation of vehicle specific software or configuration software when the Electronic Control Unit…
- 11014190Jan 23, 2025When certain vehicle ECUs are replaced, the ECU Security Key must be written in order for that ECU to communicate on the vehicle network. The GTS+ Software Health Check Results…
Electrical system: other model years
Other parts of the 2025 Toyota Grand Highlander
23 complaintsTransmission and drivetrain
18 complaintsEngine
13 complaintsFuel system
12 complaintsBody and structure
10 complaintsVehicle speed control
6 complaintsVisibility (wipers, defrost, mirrors)
4 complaintsBack-over prevention (rear camera)
3 complaintsBrakes
3 complaintsEngine cooling
3 complaintsForward collision avoidance
3 complaintsLane departure
3 complaints
← All problems reported for the 2025 Toyota Grand Highlander
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology