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Hyundai Equus: Description and Operation - Smart Cruise Control System - Engine Electrical System - Hyundai Equus VI 2009-2020 Service ManualHyundai Equus: Description and Operation

Description
The smart cruise control system allows a driver to program the vehicle to control the speed and following distance detecting the vehicle ahead without depressing the brake pedal and the accelerator pedal.
1.
Cruise speed control: The vehicle maintains the selected speed if there are not 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 the SCC is driving at high speed, the vehicle can slip outside. Therefore reduce the speed on curves even there is not a vehicle ahead. (There is no brake control by SCC.)
(3)
While the vehicle follows a vehicle ahead on straight road, if the vehicle ahead enters on curve, the vehicle equipped the SCC may accelerate to follow the vehicle ahead.
(4)
On curves, if a vehicle ahead followed is out of range, the vehicle does not accelerate to the set speed and maintain the following speed to prevent from accelerating and decelerating repeatedly. (If the vehicle equipped the SCC changes the lane or apply the accelerator pedal, the vehicle will accelerate.)
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
A.
Indicator 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 during following distance control, 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 the vehicle is being decelerated by the SCC system, the vehicle can be accelerated by applying the accelerator pedal. If the vehicle is accelerated above the set speed, the indicator in the cluster will blink.
   
[Smart Cruise Control Operating Conditions]
-
Vehicle speed at approximately 0 ~ 180km/h (0 ~ 110mph)
-
Transmission in D or Sports mode
-
"ESP OFF" switch OFF
-
"CRUISE" switch ON (CRUISE indicator ON)
Under the above conditions, activate the cruise system using the "SET/" or "RES/+" switch.
[Smart Cruise Control Disabling Conditions]
when:
Cancelled manually
While driving
-
The brake pedal is depressed.
-
Pull the lever (to CANCEL) located on the steering wheel.
While stopping with operating system
-
Depress the brake pedal and pull the lever (to CANCEL).
The advanced smart cruise control turns off temporarily when the indicator on the LCD display turns off.
The CRUISE indicator is illuminated continuously.
Cancelled automatically
The driver's door is opened.
The shift lever is shifted to N (Neutral), R (Reverse) or P (Park).
The EPB (electronic parking brake) is applied.
The vehicle speed is over 120 mph (190 km/h)
The vehicle stops on a steep incline.
The ESC, ABS or TCS is operating.
The ESC is turned off.
The sensor or the cover is dirty or blocked with foreign matter.
When the vehicle is stopped for over 5 minutes.
The vehicle stops and go repeatedly for a long period of time.
The driver starts driving by depressing the accelerator pedal or press the button (to RES+), if a vehicle stops far away ahead of the your vehicle.
The accelerator pedal is continuously depressed for more than 1 minute.
Each of these actions will cancel the smart cruise control operation.
(the SET indicator, set speed and vehicle to vehicle distance on the LCD display will go off.)
In a condition the smart cruise control is cancelled automatically, the smart cruise control will not resume even though the RES+ or SET- button is pressed.
Also, the EPB (electronic parking brake) will be applied when the vehicle is stopped.
9.
Function of cruise control
The driver may choose to only use the cruise control mode (speed control function) by doing as follows:
With the smart cruise control system on (the cruise indicator light will be on but the system will not be activated), 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. When the smart cruise control system is engaged, the CRUISE indicator in the cluster illuminates.
Set/Coast switch (SET/)
The "SET/" switch located on right of steering wheel column has two functions.
The set function - Push the "SET/" switch and release it at the desired speed. The SET indicator light in the instrument cluster will illuminate. Release the accelerator pedal. The desired speed will automatically be maintained.
At low speed of 0 ~ 30 km/h (0 ~ 20 mph), there should be a vehicle in front of drivers vehicle with a distance of 2 ~ 15 m (6.6 ~ 49.2 ft). The target speed is set to 30km/h (20 mph).
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.
The cruising speed will decrease by 1.0km/h or 1.0mph.
   
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 right 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.
Push the "RES/+" switch and release it quickly. The cruising speed will increase by 1.0km/h or 1.0mph.
Following distance control switch
This system assists you can set the distance from the vehicle ahead and maintain the selected distance even if you did 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:
Ex) Distance 4 > Distance 3 > Distance 2 > Distance 1> Distance 4
If you drive at 90 km/h (55.9mph), the distance maintain 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.
Display in the cluster
Display
Description
Display
Description

Pict Pict Distance 1 - with out a vehicle ahead

Pict Pict Distance 1 - with a vehicle ahead

Pict Pict Distance 2 - with out a vehicle ahead 

Pict Pict Distance 2 - with a vehicle ahead

Pict Pict Distance 3 - with out a vehicle ahead 

Pict Pict Distance 3 - with a vehicle ahead

Pict Pict Distance 4 - with out a vehicle ahead 

Pict Pict Distance 4 - with a vehicle ahead

Pict Pict Over 3 second-auto stop by SCC

Pict Pict SCC sensor malfunction

    Schematic Diagrams
    Trouble Symptom Charts Component Parts And Function Outline Component partFunctionCruise Control SwitchInput the set speed and distance to the SCC ECU.Instrument ClusterDisplay various information ...

    Smart Cruise Control Unit Description and Operation
    Description The smart cruise control unit is installed on the front center of the chassis. A radar sensor is embedded in the front section of the unit. This sensor detects vehicles and objects ...

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