Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2013-2015 Avalon and Avalon Hybrid vehicles manufactured October 19, 2012 to October 27, 2015 and 2013-2015 Lexus ES350 and ES300h vehicles manufactured June 18, 2012 to July 6, 2015. The affected vehicles are equipped with a Pre-Collision System (PCS) as optional equipment. In these vehicles, the PCS may unexpectedly activate and apply the brakes when the radar detects a steel joint or plate in the roadway as an object.