PLEASE MAKE SURE YOU CHECK THE PART NUMBER TO MATCH THE PART NUMBER ON THE ORIGINAL UNIT FROM YOUR VEHICLE. THE PART NUMBERS MUST MATCH! THE PART # IN THE PICTURE IS THE EXACT PART # FOR THE UNIT. OTHER PART #S LISTED (IF APPLICABLE) ARE CONSIDERED INTERCHANGEABLE. SOME MODULES MAY REQUIRE PROGRAMMING BEFORE INTERCHANGING. SOME VEHICLES REQUIRE ELECTRONICS TO BE PROGRAMMED. PLEASE CHECK WITH YOUR MECHANIC OR DEALER BEFORE PURCHASING. YOU ARE RESPONSIBLE TO MAKE SURE THIS IS THE CORRECT PART FOR YOUR VEHICLE. Some ECU need to be re-programmed to work in the car for a variety of reasons. Most often the replacement ECU will need to be re-programmed to the cars immobilizer. Other times the ECU may store the cars VIN number and other important information. ECU programming must be done by a Dealership or mechanic that has the proper tools to do it. Unfortunately, we do not know which computers need to be programmed and which do not.