How do you reset the anti-theft device in a 87 Toyota Cressida?

To reset the anti-theft device in a 1987 Toyota Cressida, first, ensure the vehicle's battery is connected. Then, insert the key into the ignition and turn it to the "On" position without starting the engine. Leave it in this position for about 10 minutes; the system should reset itself. If the issue persists, consult the owner's manual or a professional mechanic for further assistance.