I bought a 2021 Telluride EX under the impression that it had all-wheel drive. I read the owner's manual that showed the dial where you could choose the drive mode that included "snow" and "4-wheel lock." My vehicle doesn't have this on that dial -- just the various drive modes ("smart, economy, sport," etc.) Does this mean I don't have all-wheel drive, or does it mean that I have it and it only engages when the front wheels are slipping? It would be nice to know when I'm driving on a snowy road.