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To program a key for a 1998 Lexus GS 400, you'll need a blank key and the original key. Insert the original key into the ignition and turn it to the "On" position without starting the engine. Within 5 seconds, remove the key and insert the blank key, then turn it to the "On" position. After a few seconds, you'll hear a beep, indicating the new key is successfully programmed.

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1mo ago

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