2019 Toyota Highlander electrical system problems

55 owner complaints filed with NHTSA name the electrical system on the 2019 Toyota Highlander — 12% of all complaints for this model year.

Electrical System complaints

12%

share of all complaints

12,500 mi

median reported incident mileage

3 / 0

crash / fire reports

What owners report

“My transmission is now missing the 3rd gear and left me and my kids stalled in traffic as I was turning in oncoming traffic. Toyota dealership confirmed that was the problem upon inspection.”
filed Mar 26, 2026
“Sporadically, when starting up the vehicle, from the overhead console, it emanate a loud, ear piercing sound that is painful to one's ears. Apparently, this is a KNOWN issue with 2019 Toyota Highlanders in the Limited Platinum trim level. This issue has been presented to the dealership numerous…”
filed Mar 18, 2026

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

Some customers may experience echoing on the line calling the vehicle when using Bluetooth Hands Free. This is caused by the phone Hands Free volume being too low.
T-TT-0790-25 · Service Bulletin/Repair Instructions · issued Aug 20, 2025
The 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 Bulletin aid in locating, inspecting, and…
T-SB-0058-23 Rev1 · Service Campaign · issued Jun 13, 2025