Hyundai Elantra: To resume cruising speed at more than approximately 25 mph (40 km/h):
If any method other than the cruise ON/OFF switch was used to cancel cruising speed and the system is still activated, the most recent set speed will automatically resume when the RES+ switch is pushed.
It will not resume, however, if the vehicle speed has dropped below approximately 25 mph (40 km/h).
✽ NOTICE
Always check the road conditions when pressing the RES+ switch to resume the speed.