One problem related to tail light switch has been reported for the 2010 Toyota 4Runner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Toyota 4Runner based on all problems reported for the 2010 4Runner.
New led tail lights and brake lights are too bright. They are so bright they cause eye pain and distraction on clear nights. They may be a safety feature on an open road on a dark and rainy night, but in bumper to bumper driving on a clear night they are dangerous distraction.