10SmartCruiseSmartCruise and Manual TransmissionsUnder any situation that causes the system to slow the vehicle, and the enginerpm reaches a preset minimum, the engine ECM will disengage cruise controland the driver may need to manually downshift the transmission. If this hap-pens, the vehicle cruise control will need to be re-engaged (Resume or Set)before SmartCruise will be operational again.Road Curves and SmartCruise1. Gentle CurvesSmartCruise will continue to maintain a set following interval ina gentle curve as long as the turn is greater than 750 feet radius.2. Sharp CurvesWhen maintaining a set following interval, the system may notbe able to track the target vehicle in front. If this happens, thehost vehicle will maintain its current speed. When the targetvehicle in front is again within the view of the radar, SmartCruisewill restore the set following interval. Refer to “System Tracking”on page 11. Under these conditions it is recommended thatSmartCruise be turned off. SmartCruise can be turned off bydisengaging vehicle cruise control. If the driver would like tomaintain the use of cruise control but temporarily disengageSmartCruise, this is accomplished by depressing the volumecontrol momentarily. Be aware that this mode will also disableall collision type alerts.Note: The previous paragraphs do not address all the possible driving situa-tions that the vehicle and driver may encounter while in SmartCruise.