Found the
online owner's manual in the search tool.
And this excerpt from the manual:
The Enhanced Warning System (BeltAlert) can be enabled or disabled by your authorized dealer or by
following these steps:
NOTE: The following steps must occur within the first 60 seconds of the ignition switch being turned to the ON or START position. The manufacturer does not recommend deactivating the Enhanced Warning System
(BeltAlert).
1. Turn the ignition switch to the OFF position, and fasten the driver seat belt.
2. Start the engine, and wait for the Seat Belt Warning Light to turn off.
3. Within 60 seconds of starting the vehicle, unbuckle and then re-buckle the driver seat belt at least three times, ending with the seat belt buckled.
4. Turn off the engine. A single chime will sound to signify that you have successfully completed the programming.
The Enhanced Warning System (BeltAlert) can be reactivated by repeating this procedure.