Kia Stinger: Engine Electrical System / Smart Cruise Control (Stop & Go) System

Kia Stinger CK 2018-2024 Service Manual / Engine Electrical System / Smart Cruise Control (Stop & Go) System

General safety information and caution
General Safety Information and Caution

Be careful when driving the vehicle using the smart cruise control system as follows.

  

The smart cruise control system may be restricted to detect distance to the vehicle ahead due to road and traffic conditions.

On curves or inclines/declines

On curves or inclines/declines, the smart cruise control system may not detect a moving vehicle in your lane, and then your vehicle may accelerate to the set speed directly. Also, the vehicle speed may slow down abruptly when the vehicle ahead is recognized. Select the appropriate set speed on curves or inclines/declines and control the vehicle speed by applying the brake pedal if necessary.

Your vehicle speed can be reduced due to a vehicle in the adjacent lane. Apply the accelerator pedal and select the appropriate set speed. Check to be sure that the road conditions permit.

Lane changing

A vehicle which moves into your lane from an adjacent lane cannot be recognized by the sensor until it is in the sensor's detection range.

Be always cautious as detecting a vehicle that suddenly moves into your lane may be delayed by the sensor.

If the vehicle which moves into your lane is slower than your vehicle, the speed may decrease to maintain the distance to the vehicle ahead.

If the vehicle that moves into your lane is faster than your vehicle, your vehicle will maintain the selected speed even when the other vehicle is in the sensor's detection range.

Vehicle recognition

Even though a vehicle is in the same lane, a vehicle which is out of the sensor’s detection range cannot be recognized by the sensor.

1) Small vehicle such as motorcycle, bicycle and cultivator

2) A vehicle offset to one side

3) A slow-moving vehicle or sudden-decelerating vehicle

4) A stopped vehicle

5) A vehicle with small rear profile such as trailer with no loads

In the following situation, the front vehicle cannot be recognized correctly, so control the vehicle speed by applying the brake pedal or accerator pedal as necessary.

1) When the vehicle is leaning to the back due to overloading in the trunk.

2) While making turns by steering

3) When driving to one side of the lane

4) When driving on narrow lanes or on curves

If the smart cruise control is left on (CRUISE indicator light ON), the smart cruise control can be switched on accidentally. Keep the smart cruise control system off (CRUISE indicator light OFF) when the smart cruise control is not in use, to avoid inadvertently setting a speed.

Observe the speed regulation on road when setting the cruise speed.

Use the smart cruise control system only when traveling on open highways in good weather. Do not use the smart cruise control when it may not be safe to keep the car at a constant speed, for instance, driving in heavy or varying traffic, or on slippery (rainy, icy or snow-covered) or winding roads or steep up-hill or down-hill roads.

Pay particular attention to the driving conditions whenever using the smart cruise control system.

The vehicle cannot be stopped by using the smart cruise control system. Apply the brake if emergency stop is needed.

Keep the safe distance according to road conditions and vehicle speed. If the following distance is too close when driving at a high speed, it is dangerous.

The smart cruise control system can not recognize a stopped vehicle, pedestrians or an oncoming vehicle. Always look ahead cautiously to prevent unexpected and sudden situations from occurring.

The smart cruise control system is not a substitute for safe driving practices but a supplementary function only. It is the responsibility of the driver to always check the speed and the distance to the vehicle ahead.

Vehicles that make a frequent lane changes ahead of your vehicle may cause delay in the system's reaction or may cause the system to react to a vehicle in adjacent lane. Always look ahead cautiously to prevent unexpected and sudden situations from occurring.

Your vehicle may accelerate when a vehicle ahead of you disappears. When you are warned that the vehicle ahead of you is not detected, drive with caution.

When vehicles are at a standstill and the vehicle in front of you changes to the next lane, be careful when your vehicle starts to move because it may not recognize the stopped vehicle in front of you.

Always look out for pedestrians when your vehicle is maintaining a distance with the vehicle ahead.

Always be cautious for vehicles with higher height or vehicles carrying loads that stick out to the back of the vehicle.

Description and operation
Description

The smart cruise control system allows a driver to program the vehicle to control the speed and following distance by detecting the vehicle ahead without depressing the brake pedal or the accelerator pedal.

1.

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

2.

Retardation control: The vehicle decelerates if a vehicle ahead is detected.

3.

Following distance control: The vehicle maintains the selected following distance.

4.

Acceleration control: The vehicle accelerates to the selected speed if a vehicle ahead is not detected.

5.

Congested area control : In traffic, your vehicle will stop if the vehicle ahead of you stops. Also, if the vehicle ahead of you starts moving, your vehicle will start as well. However, if the vehicle stops for more than 3 seconds, you must depress the accelerator pedal or push the RES+ switch to start driving.

6.

Control on curves

(1)

The sensor may not detect a vehicle ahead or may detect a vehicle on other lanes because the detection range of the sensor is limited.

(2)

On curves, if the vehicle equipped with the SCC is driving at high speed, the vehicle can slip outside. Therefore reduce the speed on curves even if there is no vehicle ahead.

(3)

If a vehicle ahead enters on curve while following a vehicle on a straight road, the vehicle equipped with the SCC may accelerate to keep the following distance.

(4)

At curve road, ikf a front vehicle dissapears, the vehicle does not accelerate to the designated speed. It maintains previos speed to prevent repetitive acceleration/deceleration. (If driver changes the lane or pushes the accelerator pedal, then the vehicle acceleartes)

7.

Warning alarm

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

(1)

In case that the vehicle equipped with SCC is able to decelerate properly by the system – No warning

(2)

In case that the vehicle equipped with SCC is not able to decelerate properly by the system

LCD Display in the cluster will blink and the warning buzzer will sound. (The warning and deceleration by the system will go on until the brake pedal is applied.)

(3)

If the vehicle ahead (vehicle speed: less than 30km/h) disappears to the next lane while controlling following distance, 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.

8.

Accelerating by driver

Even when the vehicle is being decelerated by the SCC system, the vehicle can be accelerated by applying the accelerator pedal. When the SCC system is on and driver depresses the accelerator pedal, the LCD display in the cluster will blink.

  

• Smart cruise control operating conditions

Vehicle speed at approximately 30 - 200km/h (18.6mph - 124.2mph) : When there is no vehicle in front

Vehicle speed at approximately 0 - 200km/h (0mph - 124.2mph) : When there is a vehicle in front

Transmission in D or Sports mode

"ESP OFF" switch OFF

"CRUISE" switch ON

Under the above conditions, activate the cruise system using the "SET/–" or "RES/+" switch.

• Smart cruise control disabling conditions

"CRUISE" switch OFF

"CANCEL" switch ON

Brake pedal applied

Driver’s door opened

Vehicle speed at more than approximately 200km/h (124.2mph)

Transmission in N or P or R

ESP/ TCS / ABS operating

An accelerator pedal applied for more than 300 sec

ESP OFF" switch ON (ESP OFF indicator ON)

Parking brake applied

System failure (The warning indicator ON)

Crack, damage or wrong installation of smart cruise control unit cover (The warning indicator ON)

Yaw rate sensor offset compensation incomplete

9.

Function of cruise control

The driver may choose to only use the cruise control mode (speed control function) by doing as follows:

When the Smart Cruise Control system is on (SCC Standby mode), push the distance to distance switch for more than 2 seconds. "Smart cruise control (SCC) mode" and "Cruise control (CC) mode" can be selected. The speed control of the cruise control mode is the same as that of the smart cruise control mode.

When using the cruise control mode, the driver must manually access the distance to other vehicles as the system will not automatically brake to slow down for other vehicles.

Cruise main switch (CRUISE)

The smart cruise control system is engaged by pressing the cruise "ON/OFF" main switch.

Set/Coast switch (SET/–)

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

The set function - Push the "SET/–" switch and release it at the desired speed. Release the accelerator pedal. The desired speed will automatically be maintained.

At low speed of 10 - 180km/h (6mph - 111.8mph), there should be a vehicle in front of driver’s vehicle. The target speed is set to 30km/h (20mph).

The coast function - Push the "SET/–" switch and hold it when the smart cruise control is on. The vehicle will gradually slow down. Release the switch at the desired speed.

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

When pushing and releasing the "SET/-" switch quickly, the cruising speed will decrease by 1.0 mph. Also, when pushing and holding the "SET/-" switch, the cruise speed will decrease by 5.0 mph.

  

If the vehicle speed is above the set speed by applying the accelerator pedal, the vehicle speed will be the set speed.

Resume/Accel switch (RES/+)

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

The resume function - If any method other than the cruise “ON/OFF” main switch was used to cancel cruising speed temporarily and the system is still activated, the most recent set speed will automatically resume when the "RES/+" switch is pushed.

The accel function - Push the "RES/+" switch and hold it when the smart cruise control is on. The vehicle will gradually accelerate. Release the switch at the desired speed. The desired speed will be maintained.

When pushing and releasing the "SET/+" switch quickly, the cruising speed will increase by 1.0 mph. Also, when pushing and holding the "RES/+" switch, the cruising speed will increase by 5.0 mph.

Cancel switch (CANCEL)

The cruise control system is temporarily disengaged by pushing the "CANCEL" switch.

Following distance control switch

This system assists you to set the distance from the vehicle ahead and maintain the selected following distance even when you do not push the accelerator or the brake pedal.

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

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

e.g., Distance 4 → Distance 3 → Distance 2 → Distance 1 → Distance 4

If you drive at 90 km/h (55.9 mph), the following distance maintains as follows:

Distance 4 - approximately 52.5m (172.2ft)

Distance 3 - approximately 40m (131.2ft)

Distance 2 - approximately 30m (98.4ft)

Distance 1 - approximately 25m (82.0ft)

The following distance of each stage is changed according to the speed of the vehicle ahead.

Schematic diagrams
Trouble Symptom Charts

Component Parts And Function Outline

Component part
Function
Cruise Control Switch
Input the set speed and distance to the SCC ECU.
Instrument Cluster
Display various information inputted from SCC.
Smart Cruise Control Unit
Recognize and track the vehicle ahead.
Calculate the target speed and distance
Request the acceleration and retardation to ESP
VDC (HECU)
Automatic braking and request the engine torque control to the engine (ECM)
Request the EPB torque control on the Electronic Parking Brake (EPB)
Request the stop lamp indicator ON
Engine (ECM)
Control the engine torque
Electronic Parking Brake (EPB)
Control the EPB torque
Stop lamp
Stop lamp indicator ON

Cruise Control Switch
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Smart Cruise Control (Stop & Go) (SCC) Unit-Radar
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