One problem related to battery dead has been reported for the 2007 Toyota Highlander. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Toyota Highlander based on all problems reported for the 2007 Highlander.
Slow intermittent drain on Toyota Highlander hybrid 2007 auxiliary battery. Since April 2007, the battery has died 5 times. Dealer replaced with new battery, new dvd player but still cannot identify the source of the battery draw.