One problem related to brake disc caliper has been reported for the 2008 Toyota Highlander. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Toyota Highlander based on all problems reported for the 2008 Highlander.
Left and right rear brakes stay engaged when applied and will not disengage for up to 2 minutes after released. I was told that the mechanism (apparently the calipers) was corroded.