from the owner's manual:
AWD Warning Light
This warning light stays on for a few seconds when the ignition switch is turned to the ON position.
Thereafter, the warning light will illuminate or flash under the following conditions:
- Illuminates when there is an abnormality with the AWD system.
- Flashes when the differential oil temperature is abnormally high. Flashes when there are continually large differences between front and rear
wheel rotation, such as when trying to pull away from an icy surface.
If the AWD warning light illuminates, contact an Authorized Mazda Dealer.
If the AWD warning light flashes:
Park the vehicle in a safe place. After a few moments; if the warning light stops flashing, you can resume driving. If the light does not stop flashing, contact an Authorized Mazda Dealer.