2023 Toyota Highlander Electrical system Problems
- Complaints
- 12about this part
- Share
- 6%of 189 total for the year
- Median mileage
- 120,000miles
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 12 complaints about the electrical system of the 2023 Toyota Highlander, 6% of the 189 complaints for this model year. Where a mileage was given, the median is 120,000 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.
“Picked up my Toyota Highlander in April 2023 I have had to return it to the dealer on two occasions for check engine light and secondary Break failure I'm at the fourth check engine light and secondary brake failure report now it has been inspected by the dealer and tried to remedy it too times already currently getting ready to return to the dealer with the third check engine light secondary brake failure message”
NHTSA complaint #11546245, filed 2023-09“We live on a farm so the fact there is rodents is no surprise. However strangest thing is the knock sensor harness has been chewed completely off two times in last two months.. when this happens it causes power loss. With the extra shielding the wire has tells me it gives off a low frequency that would irritate most animals and me at this point since the part is never available. If it actually gives off a frequency, it is absolutely unnecessary and a complete nuisance.”
NHTSA complaint #11661996, filed 2025-05“My Toyota Highlander 12.3 inch display of the instrument panel may be blank at startup. Operating the vehicle with this display blank reduces the ability to see certain malfunction indicators. This Safety Recall that has been active since September 11, 2025. The problem been acknowledged and confirmed by Millers Toyota, in Anaheim, California and Toyota in Bueno Park, California dealers. Their answers, Toyota currently does not have a remedy as of to date, February 17, 2026. The screen goes blank every time I start my car, while driving, or trying to access the applications on my screen. …”
NHTSA complaint #11718394, filed 2026-02“Toyota gave me one FOB Key when I purchased the vehicle. I should be receiving 2 FOB keys. The dealer told me TOYOTA will send me a letter when the second key will be available. I called the TOYOTA Hot Line last Feb. 2024. I was told it will be available June 2024. I called last June 2024. I was told it will be available July 202. I called last July 2024. I was told it will be available August 2024. On Sept 9, 2024, I ordered a FOB key from Burien, Washington Toyota dealer. I paid a total of $400.20. This expense would have been avoided if Toyota sent me the FOB key as promised.”
NHTSA complaint #11613578, filed 2024-09“Vehicle unpredictably hesitates during light to moderate acceleration in all driving modes (Sport, Normal, and Eco). This is especially dangerous when crossing in front of oncoming traffic from a stop or slow speed. Had a certified mechanic drive the car and verify the problem, but the car's systems don't report that there is a problem, so he had no answers.”
NHTSA complaint #11534843, filed 2023-07Related 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 Highlander 2023–2025, RAV4 2023–2025, GR Corolla 2023–2025 +14 more
Related service bulletins
- 11031158Mar 18, 2026Some 2020 – 2024 model year Highlander and Highlander Hybrid vehicles may exhibit a condition in which the air conditioner does not cool due to a leak and/or corrosion in the…
- 11026306Nov 7, 2025A new head unit software update is available for 2022 – 2025 model year Tundra, and Tundra Hybrid; 2023 – 2025 model year Corolla Cross, Corolla Cross Hybrid, Highlander…
- 11024080Sep 17, 2025Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota’s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we…
- 11024075Sep 9, 2025A new head unit software update is available for 2023 model year Corolla Cross, Corolla Cross Hybrid, Highlander, Highlander Hybrid, and Mirai vehicles equipped with Toyota…
- 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…
- 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…
- 11012759Dec 12, 2024Some 2022 – 2024 model year Tundra and 2023 model year Highlander vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P162B87 (Lost Communication with…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 1 | 10% |
| 2024 | 6 | 14% |
| 2023 | 12 | 6% |
| 2022 | 23 | 9% |
| 2021 | 28 | 5% |
| 2020 | 18 | 6% |
| 2019 | 56 | 11% |
| 2018 | 24 | 9% |
| 2017 | 46 | 17% |
| 2016 | 14 | 13% |
| 2015 | 52 | 27% |
| 2014 | 35 | 26% |
| 2013 | 26 | 13% |
| 2012 | 29 | 16% |
| 2011 | 23 | 13% |
| 2010 | 53 | 25% |
| 2009 | 20 | 15% |
| 2008 | 44 | 11% |
| 2007 | 23 | 19% |
| 2006 | 26 | 9% |
| 2005 | 25 | 11% |
| 2004 | 18 | 6% |
| 2003 | 15 | 6% |
| 2002 | 13 | 4% |
| 2001 | 5 | 4% |
Other parts of the 2023 Toyota Highlander
40 complaintsBody and structure
32 complaintsEngine
28 complaintsSeats
21 complaintsBrakes
20 complaintsTransmission and drivetrain
20 complaintsFuel system
17 complaintsAir bags
12 complaintsVehicle speed control
9 complaintsLane departure
6 complaintsForward collision avoidance
5 complaintsTires
5 complaints
← All problems reported for the 2023 Toyota Highlander
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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