2021 Lexus IS350

<h1>2021 Lexus IS350 Keyless Entry Remote Fob (Smart Key)</h1> Important: The 2021 Lexus IS350 does not support onboard programming for smart key remote fobs. Programming must be performed by a qualified technician using specialized diagnostic tools. Step-by-Step Programming Instructions: <ul> <li>Step 1: Confirm that the replacement smart key fob is compatible with the 2021 Lexus IS350 and has not been previously registered to another vehicle. </li> <li>Step 2: Schedule service with a certified technician who is trained in Lexus smart key systems and equipped with factory-grade diagnostic equipment. </li> <li>Step 3: Ensure the technician uses secure, manufacturer-authorized software capable of accessing the vehicle’s electronic control unit and key registration module. </li> <li>Step 4: If the vehicle is drivable, consider taking it directly to the technician’s service location to reduce additional fees associated with mobile programming. </li> <li>Step 5: Bring all working smart keys with you. Some Lexus systems require that all remotes be present during the programming process to ensure proper synchronization. </li> <li>Step 6: The technician will connect a diagnostic interface to the vehicle’s onboard port, typically located beneath the dashboard. </li> <li>Step 7: Using approved software, the technician will access the key registration system and begin the process of pairing the new smart key to the vehicle. </li> <li>Step 8: Once programming is complete, the technician will test all functions—including lock, unlock, trunk release, and push-button start—to verify successful operation. </li> <li>Step 9: If additional smart keys are needed, they can usually be programmed during the same session.</li> <li> Step 10: Before concluding the appointment, confirm that all programmed smart keys function correctly and that the vehicle responds as expected to each remote.</li> </ul>

2021 Lexus IS350

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