One problem related to power assist brake has been reported for the 2003 Toyota Highlander. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Toyota Highlander based on all problems reported for the 2003 Highlander.
Pulling into parking space the brakes did not stop the car even a that slow rate. My car hit the parked car in front of me causing substantial damage to that car and only moderate bumper damage to my vehicle. At other times the engine seems to power up while driving and this may have happened while trying to park when the accident happened.