Two problems related to owners/service manual have been reported for the 2015 Toyota Highlander. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Toyota Highlander based on all problems reported for the 2015 Highlander.
Driver side door lock mechanism worked only intermittently. Had to crawl through passenger side to unlock door manually by pulling on the door handle. Replaced door lock mechanism at dealership. Now the left rear door is starting to malfunction. Sometimes passenger is unable to open door from inside of car and the door has to be opened from the outside.
Soon after warranty ran out the lift gate to the trunk hatch began leaking lubrication and intermittanly would not open all the way, close all the way, or open or close at all. Many times, I would need to manually push the hatch down to close, which required extreme force. The same force would be required to open the hatch at times. Esentially, the lift gate is unreliable to lift or close most of the time. The cost estimate from the dealer exceeded $1,800 for the replacement of both struts.