<h1>2021 Lexus NX Keyless Entry Remote Fob (Smart Key)</h1> <p><font size="3"><b> Important:</b> The 2021 Lexus NX does not support onboard programming for smart key remote fobs. Programming requires specialized equipment or the assistance of a qualified professional. </font></p> <p><font size="3"><b>Step-by-Step Programming Instructions:</b></font></p> <ul> <li><font size="3"> Step 1: Confirm that the replacement smart key fob is compatible with the 2021 Lexus NX and has not been previously programmed to another vehicle. </font></li> <li><font size="3">Step 2: Schedule service with a technician who is experienced with Lexus key systems and has the necessary equipment to program the smart key fob. </font></li> <li><font size="3">Step 3: Ensure the technician uses secure, manufacturer-approved software capable of interfacing with the vehicle’s key registration system and onboard diagnostic unit. </font></li> <li><font size="3">Step 4: If the vehicle is operational, it may save you money by driving it directly to the technician’s service location instead of requesting mobile programming services. </font></li> <li><font size="3">Step 5: Bring all currently functioning smart keys to the service appointment. Some Lexus systems may require all remotes to be present during programming to ensure they remain active. </font></li> <li><font size="3">Step 6: The technician will connect specialized equipment to your vehicle’s onboard diagnostic port, typically located beneath the dashboard, to begin the programming process. </font></li> <li><font size="3">Step 7: Using the appropriate software, the technician will begin the programming process and securely pair the new smart key fob with the vehicle’s system.</font></li> <li><font size="3"> Step 8: After programming, the technician will test all key functions—including lock/unlock, trunk release, and push-button start—to ensure they are working properly. </font></li> <li><font size="3">Step 9: If additional remotes need to be programmed, they can typically be done during the same session. </font></li> <li><font size="3">Step 10: Before completing the service, confirm that all programmed smart keys are functioning properly and that the vehicle responds accurately to each key.</font></li> </ul>