One problem related to adaptive equipment has been reported for the 2013 Toyota Highlander. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Toyota Highlander based on all problems reported for the 2013 Highlander.
Starting this summer our 2013 Toyota Highlander was having a terrible odor coming from the ac. Went to dealer and was told they would clean out the ac/ evaporator box with ammonia and then put a mint spray to reduce ammonia smell. Paid $65 for this service. On way home I smell nothing but a stale odor. The next day the moldy smell was back. Didn't even have to start car. The second I opened door it hit me. I went on google and saw a number of people were having same problem with Toyota cars. Not just a Highlander!! the avalon,camry and others are having this same issue. The problem appears to be mold in the evaporator box and vents. Have had many vehicles and never a problem like this one. Bought the car new and for Toyota not to admit to a bad design is disappointing.