One problem related to brakes failed 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.
Intermittently during normal driving conditions, there exists instances where brake hydraulic failure occurs. At times the "brake" indicator light will illuminate associated with increased brake pedal feel. Braking power is reduced. Also, driver display screen displays "braking power low" warning indication. After stop and placing in park, brake hydraulic power returns and operate as normal.