One problem related to brake light on has been reported for the 2001 Toyota Highlander. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 Toyota Highlander based on all problems reported for the 2001 Highlander.
Wiring problem with passenger side brake light. Kept replacing bulb, then replacing socket, now going to put a whole kit. Toyota neglected to tell me this in the first place, even after several tickets and wasted money on different things telling me it would fix the problem.