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

General Safety Information and Precautions

General Safety Information and Caution

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

Caution

The Smart Cruise Control system may be limited in detecting the distance to the vehicle ahead due to road and traffic conditions.
On curves or uphill/downhill grades
On curves or uphill/downhill grades, the Smart Cruise Control system may not detect a vehicle moving in your lane, and your vehicle may accelerate directly to the set speed. Also, the vehicle may decelerate suddenly when a vehicle ahead is detected. Select an appropriate set speed on curves or uphill/downhill grades and control vehicle speed by depressing the brake pedal, if necessary.

Your vehicle's speed may be reduced due to a vehicle nearby in an adjacent lane. Depress the accelerator pedal and select an appropriate set speed. Make sure that road conditions allow it.
Lane Changes
A vehicle that moves into your lane from an adjacent lane cannot be detected by the sensor until it enters the sensor detection range.
Always be careful when a vehicle suddenly moves into your lane, as detection by the sensor may be delayed.
If the vehicle moving in your lane is moving slower than your vehicle, your vehicle's speed may decrease to maintain the distance to the vehicle ahead.
If the vehicle moving in your lane is moving faster than your vehicle, your vehicle will maintain the set speed even if another vehicle is within the sensor range.
Vehicle Recognition
Even if a vehicle is in the same lane, a vehicle outside the sensor detection range cannot be recognized by the sensor.

1) A small vehicle such as a motorcycle, bicycle, or cultivator.

2) A vehicle offset to one side.

3) A slow-moving vehicle or a vehicle decelerating rapidly.

4) A stopped vehicle.

5) A vehicle with a low rear profile, such as an unloaded trailer.
In the following situations, the vehicle ahead may not be detected correctly, so control vehicle speed by depressing the brake pedal or accelerator pedal, if necessary.

1) When the vehicle tilts rearward due to a heavy load in the luggage compartment.

2) When turning the steering wheel.

3) When driving on one side of the lane.

4) When driving on narrow lanes or on curves.
If the Smart Cruise Control remains on (CRUISE ON indicator), the Smart Cruise Control may be activated unintentionally. Keep the Smart Cruise Control switched off (CRUISE OFF indicator) when not in use to avoid unintentionally setting the speed.
Observe speed limits on the road when setting the cruise control speed.
Use the Smart Cruise Control system only when driving on open, dry highways in good weather. Do not use Smart Cruise Control when it may be unsafe to maintain a constant vehicle speed, such as in heavy or changing traffic, on slippery roads (rain, ice, or snow), on winding roads, or on steep uphill or downhill grades.
Pay special attention to driving conditions when using the Smart Cruise Control system.
The vehicle cannot be stopped with the Smart Cruise Control system. Apply the brakes if an emergency stop is required.
Maintain a safe following distance depending on road conditions and vehicle speed. If the following distance is too short at high speed, it is dangerous.
The Smart Cruise Control system cannot detect a stopped vehicle, pedestrians, or an oncoming vehicle. Always watch the road ahead carefully to avoid unexpected and sudden situations.
The Smart Cruise Control system does not replace safe driving practices; it is only a convenience feature. It is the driver's responsibility to always check the speed and the distance to the vehicle ahead.
Vehicles that frequently change lanes in front of your vehicle may delay system response or may cause the system to react to a vehicle in an adjacent lane. Always watch the road ahead carefully to avoid unexpected and sudden situations.
Your vehicle may accelerate when the vehicle ahead of you moves out of the lane. When the warning that a vehicle ahead is not detected appears, drive with caution.
When your vehicle is stopped and a vehicle ahead of you changes into the next lane, be careful when your vehicle starts to move, because the system may not recognize a stopped vehicle ahead of you.
Always watch for pedestrians when your vehicle is maintaining a distance from the vehicle ahead.
Always be careful with taller vehicles or vehicles carrying cargo that extends beyond the rear of the vehicle.

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
Congested area control: In traffic, your vehicle will stop if the vehicle ahead of you stops. Also, if the vehicle ahead starts moving, your vehicle will also start. However, if your vehicle has been stopped for more than 3 seconds, you must depress the accelerator pedal or press the RES+ switch to start moving.
6
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. On curves, if a vehicle equipped with SCC is traveling at high speed, the vehicle may slide outward. Therefore, reduce speed on curves, even if there is no vehicle ahead.
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.
4. On curved roads, if the vehicle ahead disappears, the vehicle will not accelerate to the set speed. It maintains the previous speed to prevent repeated acceleration/braking. (If the driver changes lanes or depresses the accelerator pedal, the vehicle then accelerates.)
7
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.
8
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.
NOTE
• Smart Cruise Control Operating Conditions
- Vehicle speed approximately 30–200 km/h (19–124.2 mph): when there is no vehicle ahead
  
  Vehicle speed approximately 0 to 200 km/h: When there is a vehicle ahead
- Transmission in D or Sport 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 Disengagement Conditions
- "CRUISE" switch OFF
- Turn on the "CANCEL" switch
- Brake Pedal Pressed
- The driver door is open.
- Vehicle speed is above 200 km/h.
- Transmission in N, P or R
- ESP/TCS/ABS operation
- Accelerator pedal depressed for more than 300 seconds
- "ESP OFF" switch ON (ESP OFF indicator on)
- Parking brake applied
- System malfunction (warning indicator on)
- Crack, damage, or incorrect installation of the Smart Cruise Control unit cover (warning indicator illuminates)
- Incomplete compensation of yaw rate sensor offset
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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 Control Main Switch (CRUISE)

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 low speeds of 10–180 km/h, the vehicle must be behind the vehicle ahead of the driver. 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.

Resume/Accel Switch (RES/+)

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.

Following Distance Control 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 (172.2 ft)

Distance 3 — approximately 40 m (131.2 ft)

Distance 2 — approximately 30 m (98.4 ft)

Distance 1 — approximately 25 m (82.0 ft)

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

Circuit Diagrams

Symptom Troubleshooting Tables

Components and Function Description

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 Engine Control Module (ECM) EPB torque control request to Electronic Parking Brake (EPB) Request brake light switch activation
Engine (ECM)	Control engine torque
Electronic Parking Brake (EPB)	Monitor EPB torque
Stop Lamp	Brake light illuminates