<h1>2020 Lexus RX450h Keyless Entry Smart Key Remote Fob</h1> <p><font size="3"><b> Important:</b> The 2020 Lexus RX450h does not support onboard programming. A smart key remote fob must be programmed by a qualified professional 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 technician or authorized dealer who has the appropriate diagnostic tools and experience working with Lexus smart key systems. </font></li> <li><font size="3">Step 2: If the vehicle is operational, consider driving it to the service location rather than requesting mobile assistance. This may reduce the overall cost of programming. </font></li> <li><font size="3">Step 3: Schedule an appointment and confirm that the technician is familiar with Lexus hybrid systems and the RX450h smart key programming process. </font></li> <li><font size="3">Step 4: Bring all existing and new key fobs to the appointment. Some systems require that all remotes be present to complete the programming successfully. </font></li> <li><font size="3">Step 5: Once at the appointment, the technician will connect specialized diagnostic equipment to the vehicle’s onboard system through the designated interface port. </font></li> <li><font size="3">Step 6: Using the equipment, the technician will securely register the new smart key fob to the vehicle’s electronic control system. </font></li> <li><font size="3">Step 7: After programming is complete, the technician will test the remote to verify full functionality, including door locking/unlocking and engine start. </font></li> <li><font size="3">Step 8: If more than one remote is being added, each fob will be programmed and tested individually to ensure full compatibility with the system. </font></li> <li><font size="3">Step 9: Before concluding the service, confirm that all remotes are functioning correctly. Request a confirmation of successful programming if available.</font></li> </ul>
