IT IS THE CUSTOMER RESPONSIBILITY TO GET THIS PART INSTALLED BY A PROFESSIONAL CERTIFIED MECHANIC. BY PURCHASING THIS PART WE ARE NOT RESPONSIBLE/LIABLE FOR ANY ISSUES THAT MAY OCCUR TO YOUR VEHICLE SINCE THIS IS A USED VEHICLE PART. PLEASE NOTE: these units are bought by part number only. Usually late model vehicles. May need to be program… ATTENTION : MODULE MUST BE PROGRAMMED AT DEALERSHIP FOR PROPER FUNCTIONING.