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Home >> Lexus >> 2000 >> ES 300 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Anti-Theft Systems >> Operation >> Active Mode >> Checking Anti-Theft System Warning (Alarm) Operation

Checking Anti-Theft System Warning (Alarm) Operation

Ensure anti-theft system is set and anti-theft indicator is blinking. When engine hood is opened or any door is unlocked without using key, vehicle horns and anti-theft horn will sound, and headlights and taillights will flash for about one minute. If any door is unlocked and key is not in ignition switch when alarm is sounding, anti-theft system will automatically lock door.