2008 Lexus GS450h

<h1>2008 Lexus GS450h – Keyless Entry Remote Fob Programming Instructions</h1> Note: The 2008 Lexus GS450h does not support onboard programming for smart key remote fobs. Programming requires specialized diagnostic equipment to interface with the vehicle’s electronic control systems. Step-by-Step Programming Instructions: <ul> <li>Step 1: Ensure that the replacement smart key remote fob is compatible with the 2008 Lexus GS450h, including the correct part number, frequency, and FCC ID. </li> <li>Step 2: Make sure the vehicle’s battery is fully charged and that all doors, the trunk, and the hood are securely closed to prevent any interruptions during the programming process. </li> <li>Step 3: Connect a professional-grade diagnostic tool to the vehicle’s OBD-II port, located beneath the dashboard on the driver's side. This tool will interface with the Body Control Module (BCM) and Smart Key ECU of the vehicle. </li> <li>Step 4: Using the diagnostic tool, access the Keyless Entry or Smart Key Programming section of the interface. </li> <li>Step 5: Follow the instructions provided by the diagnostic tool to program the new smart key remote fob. This process may involve inserting the original key or fob into the ignition or pressing specific buttons on the remote to confirm the programming. </li> <li>Step 6: If you need to program additional remotes, repeat the process for each remote in the same session to ensure that all remotes are correctly registered. </li> <li>Step 7: Once programming is complete, follow the instructions on the diagnostic tool to exit programming mode and disconnect the tool from the OBD-II port. </li> <li>Step 8: Test each newly programmed remote fob to confirm that all functions, such as lock, unlock, trunk release, and engine start/stop, are working as expected.</li> </ul>

2008 Lexus GS450h

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