Remote Start for LEXUS 2010-2012 HS 250h "Push-To-Start" Models ONLY Includes Factory T-Harness for Quick, Clean Installation *Professional installation strongly urged. For "PUSH-TO-START" 2010-2012 LEXUS HS 250h ONLY. Uses factory remote - no other parts needed INCLUDES Factory T-Harness for quick, clean installation. INCLUDES software "FLASH" for your vehicle to ensure most up-to-date functionality and INCLUDES comprehensive instructions and schematics Start vehicle by pressing factory remote "lock" button 3 times. Quick, simple, clean installation - Nevertheless, it is possible you will need technical help to complete your installation that is only available to authorized dealers