This light will come on when the rear drive system is overheating.
An ALL WHEEL DRIVE OFF message will appear in the Driver Information Center (DIC) too. This light will turn off when the rear drive system cools down. If this light stays on for a while, you need to reset the light. To reset the light, turn the ignition off and then back on again. If the light stays on, see your dealer/retailer right away.
See All-Wheel Drive and DIC Warnings and Messages for more information.