2020 Lexus IS300

<h1>Programming Instructions for the 2020 Lexus IS300 Keyless Entry Remote Fob (Smart Key)</h1> Important: The 2020 Lexus IS300 does not support onboard programming for smart key remote fobs. A certified technician must perform the programming using professional diagnostic tools. Step-by-Step Programming Instructions: <ul> <li>Step 1: Confirm that the replacement smart key fob is compatible with the 2020 Lexus IS300 and is not already programmed to another vehicle. </li> <li>Step 2: Schedule service with a qualified automotive technician who specializes in Lexus smart key systems and uses factory-level diagnostic equipment. </li> <li>Step 3: Ensure the technician utilizes secure software capable of accessing the vehicle’s electronic key registration and immobilizer systems. </li> <li>Step 4: If the vehicle is operational, consider driving it to the technician’s location to avoid additional charges related to mobile programming services. </li> <li>Step 5: Bring all existing smart keys with you. Lexus systems may require all remotes to be present during the programming process to prevent deactivation of current keys. </li> <li>Step 6: The technician will connect a diagnostic interface to the vehicle’s onboard data port, typically located beneath the dashboard. </li> <li>Step 7: The technician will access the key registration system and begin the secure pairing process to register the new smart key with the vehicle. </li> <li>Step 8: Once programming is complete, the technician will test the smart key to confirm full functionality, including lock, unlock, trunk release, and push-button start. </li> <li>Step 9: If additional remotes are being added, they can typically be programmed during the same session. </li> <li>Step 10: Before completing the service, ensure that all programmed keys are functioning properly and that the vehicle responds correctly to each.</li> </ul>

2020 Lexus IS300

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