<h1>2021 Lexus RX350 Keyless Entry Smart Key Remote Fob</h1> <p><font size="3"><b>Important:</b> This vehicle does not support onboard programming and requires a qualified professional to program the smart key remote fobs using specialized diagnostic equipment. </font></p> <p><font size="3"><b>Step-by-Step Programming Instructions:</b> </font></p> <ul> <li><font size="3">Step 1: Locate a certified automotive professional or authorized dealer with the necessary equipment and expertise to program the smart key remote fob for your 2021 Lexus RX350. </font></li> <li><font size="3">Step 2: If your vehicle is still operational, consider driving it to the professional’s location instead of requesting mobile service, as this may help reduce potential costs. </font></li> <li><font size="3">Step 3: Once you have identified a professional, schedule an appointment for the smart key programming. Ensure that the technician has experience with Lexus keyless entry systems to ensure the process runs smoothly. </font></li> <li><font size="3">Step 4: Arrive at the appointment with any existing key fobs for your vehicle. Some systems may require all key fobs to be programmed at the same time, so be sure to bring them along. </font></li> <li><font size="3">Step 5: The technician will connect specialized diagnostic equipment to your vehicle’s system to begin the programming process for the new smart key remote fob. </font></li> <li><font size="3">Step 6: The technician will securely program the new smart key remote fob by inputting the necessary data into the vehicle’s system. </font></li> <li><font size="3">Step 7: Once the fob has been programmed, the technician will test it to ensure it functions correctly, including the ability to lock/unlock the doors and start the vehicle. </font></li> <li><font size="3">Step 8: If additional key fobs are needed, the technician will program them one by one, ensuring that each fob is successfully synchronized with your vehicle’s system. </font></li> <li><font size="3">Step 9: After all fobs are programmed, the technician will test each one to confirm proper functionality, ensuring they lock/unlock the doors and start the vehicle. </font></li> <li><font size="3">Step 10: Before leaving, verify with the technician that all key fobs have been successfully programmed and are functioning as intended. </font></li> <li><font size="3">Step 11: Request any necessary documentation from the technician, confirming the successful programming of your key fobs. </font></li> <li><font size="3">Step 12: If any issues arise after programming, immediately contact the professional to resolve any problems and ensure the key fob works seamlessly with your vehicle.</font></li> </ul>