Final answer:
The optical sensor for the Intelligent Auto Headlight system is typically located around the headlights of a car. It detects external light conditions and adjusts the headlights accordingly.
Step-by-step explanation:
The optical sensor for the Intelligent Auto Headlight system is typically located around the headlights of a car. It is designed to detect external light conditions and adjust the headlights accordingly. It can be placed inside the headlight assembly or in a separate housing near the headlights.