Engine Electrical System

Smart Cruise Control System

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General Safety Information and Precautions

General Safety Information and Precautions

Be careful when driving with the Smart Cruise Control system, as follows.

Description and Operation

Description

The Smart Cruise Control system allows the driver to program the vehicle to control speed and following distance by detecting the vehicle ahead, without pressing the brake pedal or the accelerator pedal.

  1. Cruise control speed: The vehicle maintains the selected speed when there are no vehicles ahead.

  2. Deceleration Control: The vehicle decelerates when a vehicle ahead is detected.

  3. Distance control: The vehicle maintains the selected distance.

  4. Acceleration control: The vehicle accelerates to the selected speed when no vehicle ahead is detected.

  5. Cornering Control

    1. The sensor may not detect a vehicle ahead, or it may detect a vehicle in other lanes, because the sensor detection range is limited.

    2. When cornering, if a vehicle equipped with SCC is traveling at high speed, the vehicle may slide outward. Therefore, reduce speed when cornering, even if there is no vehicle ahead. (Braking is not controlled by SCC.)

    3. If the vehicle ahead enters a curve while your vehicle is following it on a straight road, the vehicle equipped with SCC may accelerate to maintain the set following distance.

  6. Warning Signal

    If a vehicle equipped with SCC decelerates because the vehicle ahead decelerates or moves into your lane, the warning will activate.

    1. If the vehicle equipped with SCC cannot decelerate properly by the system – without warning

    2. If the vehicle equipped with SCC cannot decelerate properly by the system

      • The LCD in the cluster will flash, and a warning message will appear. A buzzer will sound. (The warning and deceleration system will continue to operate until the brake pedal is depressed.)

    3. If the vehicle ahead (vehicle speed: less than 30 km/h) moves into the next lane while the system is monitoring the following distance, a warning chime will sound and a message will appear. Adjust your vehicle speed for vehicles or objects that may suddenly appear ahead of you.

  7. Driver Acceleration

    Even when the vehicle is decelerated by the SCC system, the vehicle can be accelerated by pressing the accelerator pedal. When the SCC indicator is on and the driver presses the accelerator pedal, the LCD display in the cluster will flash.

  8. Cruise Control Function

    The driver can use only the cruise control mode (speed control function) by performing the following:

    When the Smart Cruise Control system is on (SCC Standby mode), press and hold the distance switch for more than 2 seconds to switch between "Smart Cruise Control (SCC)" and "Cruise Control (CC)" modes. The cruise control mode is the same as the Smart Cruise Control mode.

    When using the cruise control mode, the driver must manually control the distance to other vehicles, because the system will not automatically brake to reduce speed for other vehicles.

CRUISE main ON/OFF switch

The Smart Cruise Control system is turned on by pressing the cruise "ON/OFF" main switch.

SET/– switch

The "SET/–" switch, located on the right side of the steering column, has two functions.

Set Function: Press and release the "SET/–" switch at the desired speed. Release the accelerator pedal. The desired speed will be maintained automatically.

At a low speed of 10–180 km/h, there must be a vehicle ahead of the driver's vehicle. The target speed is set to 30 km/h.

Coast Function: Press and hold the "SET/–" switch when Smart Cruise Control is on. The vehicle will gradually decelerate. Release the switch at the desired speed.

The desired speed will be maintained. Press and quickly release the "SET/–" switch.

When the "SET/–" switch is quickly pressed and released, the cruise speed will decrease by 1 km/h. Also, when the "SET/–" switch is pressed and held, the cruise control speed will decrease by 5.0 mph.

RES/+ switch

The "RES/+" switch, located on the right side of the steering column, has two functions.

Resume Function: If any method other than the cruise "ON/OFF" main switch was used to temporarily cancel the cruise speed and the system is still activated, the most recently set speed will automatically resume when the "RES/+" switch is pressed.

Acceleration function: Press and hold the "RES/+" switch while Smart Cruise Control is active. The vehicle will accelerate gradually. Release the switch at the desired speed. The desired speed will be maintained.

Briefly press and release the "SET/+" switch to increase the cruise speed by 1 km/h. Alternatively, press and hold the "RES/+" switch to increase the cruise control speed by 5.0 mph.

CANCEL switch

The cruise control system is temporarily canceled by pressing the "CANCEL" switch.

Distance Setting Switch

This system helps you set a distance to the vehicle ahead and maintain the selected following distance, even when you do not press the accelerator pedal or the brake pedal.

Select an appropriate following distance according to road conditions and vehicle speed.

Each time the button is pressed, the following distance changes as follows:

For example: Distance 4 → Distance 3 → Distance 2 → Distance 1 → Distance 4

When driving at 90 km/h, the following distance is maintained as follows:

Distance 4 - approximately 52.5 m

Distance 3 - approximately 40 m

Distance 2 - approximately 32.5 m

Distance 1 - approximately 25 m

The following distance for each step changes depending on the speed of the vehicle ahead.

Circuit Diagrams

Symptom Troubleshooting Tables

Components and Function Schematic

Component Function
Cruise control switch Input the set speed and distance into the SCC ECU.
Instrument Cluster Display various information input from the SCC.
Smart Cruise Control Recognize and track the vehicle ahead.
Calculate the speed and distance to the target
Request acceleration and deceleration from the ESP
DC Hydraulic Electronic Control Unit (HECU) Automatic braking and engine torque control request to ECM
Request to illuminate brake lamp
Engine (ECM) Control engine torque
Stop Lamp Brake light illuminates

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