Demo and explanation. Needs resetting after every oil change. Light is merely the function of a km or mileage counter ran by the vehicle`s computer (ECU). Either 4 or 6 cylinder engines.
Light starts blinking at start-up at 7900 - 8100 miles (12,640 - 12,960 km) since last reset.
Light stays on at 9900 - 11,000 miles (15,840 - 16,160 km) since last reset.