To set vehicle to vehicle distance:

This function allows you to program the vehicle to maintain a relative distance to the vehicle ahead without depressing the accelerator pedal or brake pedal.
The vehicle to vehicle distance will automatically activate when the smart cruise control system is on. Select the appropriate distance according to road conditions and vehicle speed.
Each time the button is pressed, the vehicle to vehicle distance changes as follows:

For example, if you drive at 90 km/h (56 mph), the distance maintained is as follows:
Distance 4 - approximately 52.5 m (172 ft)
Distance 3 - approximately 40 m (131 ft)
Distance 2 - approximately 32.5 m (107 ft)
Distance 1 - approximately 25 m (82ft)
✽ NOTICE
The distance is set to the last set distance when the system was used after starting the engine.
When the lane ahead is clear :

The vehicle speed will maintain the set speed.
WARNING - Following Distance
When there is a vehicle ahead of you in your lane :

CAUTION

If the vehicle ahead (vehicle speed: less than 30 km/h (20 mph) disappears to the next lane, the warning chime will sound and a message will appear. Adjust your vehicle speed for vehicles or objects that can suddenly appear in front of you by depressing the brake pedal according to the road and driving conditions ahead.
Press the CRUISE button. (the CRUISE indicator in the instrument cluster will go off). When the Smart Cruise Control System is not needed, press the [CRUISE] switch and deactivate the system.
The sensor detects the distance to the vehicle ahead. If the sensor is covered with dirt or other foreign matter, the vehicle to vehicle distance control may not operate correctly.
The following maintenance services must be performed to ensure good emission control and performance. Keep receipts for all vehicle emission services to protect your warranty. Where both mileage and time are shown, the frequency of service is determined by whichever occurs first.
1. Turn the ignition switch and all other switches off. 2. Open the fuse panel cover. If the switch is located in the “OFF” position, a caution indicator will be displayed in the cluster. To identify the location of a specific fuse, please refer to the inside of the fuse panel cover and the description list in this section.