See also:

To Vary The Speed Setting
While ACC is set, you can increase the set speed by pressing and holding the RES + button. If the button is continually pressed, the set speed will continue to increase in 5 mph (8 km/h) increme ...

Electronic Speed Control – If Equipped
− Do not use in hilly terrain or with heavy loads. − When using the speed control, if you experience speed drops greater than 10 mph (16 km/h), disengage until you can get back to cru ...

Cooling System – Drain, Flush, And Refill
If the engine coolant (antifreeze) is dirty and contains a considerable amount of sediment, clean and flush with reliable cooling system cleaner. Follow with a thorough rinsing to remove all depos ...