Adjust Speed Setting
Once Cruise Control is enabled and a cruising speed has been set, use the left-side buttons to increase cruising speed by 1 mph (1.6 kph) increments. To decrease speed, use the left-side buttons to reduce speed by 1 mph (1.6 kph) increments or hold to the desired speed.
Press the top-left button to increase speed.
Press the bottom-left button to decrease speed.