One problem related to turn signal has been reported for the 2018 Toyota Highlander. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Toyota Highlander based on all problems reported for the 2018 Highlander.
Automatic high beam system shuts down for no reason. This is not the normal cycling (high beams on/off when traffic detected) of the system. Icon indicating system is on disappears and cannot get high beams to operate. This happens on dark straight roads with no other traffic around. Dealer states that they cannot explain why this happens but they will not address this issue. Toyota has repaired this exact same issue on their Lexus line (replace turn signal stalk) but refuses to address it for their Toyota models. This should be considered a safety issue.
| Turn Signal problems | |
| Headlights problems | |
| Headlight Switch problems | |
| Exterior Lighting problems |