How do you disable security system on 1996 Lexus Es 300?

To disable the security system on a 1996 Lexus ES 300, you typically need to use the key to unlock the driver's door, which should disarm the system. If that doesn't work, you can try inserting the key into the ignition and turning it to the "on" position without starting the engine, then waiting for about 30 seconds. If the security light continues to flash, you may need to consult the owner's manual or seek assistance from a professional, as tampering with the system can lead to further complications.