The rear differential lock indicator light illuminates when the ignition switch is turned ON, and then turns OFF after approximately 3 seconds. The rear differential lock indicator light illuminates by the rear differential lock control unit sending light illumination requests to the instrument panel cluster via CAN communication.
Rear differential lock failure warning light function
The rear differential lock indicator light illuminates when the differential lock is operated, and it turns OFF when the differential lock is released. The rear differential lock control unit requests the instrument panel cluster to turn ON or OFF the rear differential lock indicator light in accordance with the differential lock position switch input.
Rear differential lock indicator light illumination conditions