Hyundai Elantra CN7: Driver Parking Assistance System - Advanced Driver Assistance System (ADAS) - Hyundai Elantra CN7 2021-2025 Workshop ManualHyundai Elantra CN7: Driver Parking Assistance System

Desctiprion and operation

Description
ADAS_PRK is a unit that controls the functions required for ADAS parking. If the ADAS_PRK is applied, the parking distance warning function is also controlled by the ADAS_PRK.
System Function
Parking Collision-Avoidance Assist (PCA)
PCA is a parking safety system that assists in collision warning and emergency braking in the event of a collision with rear pedestrians and obstacles during reversing at low speed (collision warning is displayed on the instrument cluster and monitor and audible warning sounds)

System operating specifications
Parking Collision-Avoidance Assist

When reversing at a speed of below 10Kph
1.
When a collision risk is detected, visual/audible warnings are performed.
2.
When the collision risk increases, braking assistance is performed. (When braking mode is activated)
※ The braking deceleration value varies depending on the vehicle model and speed
3.
After braking assistance is completed: It releases the braking control after maintaining the braking power for a certain period of time.
Operating condition
1.
User Setting Menu (USM) : Driver assistance - select rear collision warning or braking warning
2.
When the reverse vehicle speed is below 10 Kph
System limitations
Parking Collision-Avoidance Assist (PCA)
–
User Setting Menu (USM) : Driver Assistance - If the rear collision warning or braking warning is not selected.
–
When gear is not positioned in 'R'.
–
When the reverse speed is over 10Kph

Troubleshooting

Troubleshooting
Diagnosis with Diagnostic tool
1.
In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (Diagnostic tool).
The diagnostic system (Diagnostic tool) provides the following information.
1)
Fault Code Searching : Checking failure and code number (DTC)
2)
Data Analysis : Checking the system input/output data state
3)
Actuation test : Checking the system operation condition
4)
S/W Management : Controlling other features including system option setting and zero point adjustment
2.
Connect the cable of Diagnostic tool to the data link connector in driver side crash pad lower panel, and turn on the Diagnostic tool.
3.
If diagnose the vehicle by Diagnostic tool, select "DTC Analysis" and "Vehicle".

4.
If check current status, select the "Data Analysis" .

5.
Select "ADAS_PRK", if you want to check current data of Driver parking assistance system.

Variant Coding Procedures
1.
Connect the cable of Diagnostic tool to the data link connector in driver side crash pad lower panel, and turn on the Diagnostic tool.
2.
Select the 'S/W Management' and 'Car model'.

3.
Select the 'Advanced Driver Assistance Systems_Parking' and Variant Coding.

ADAS Parking ECU (ADAS_PRK)

Components and components location
Components and Components Location

Repair procedures
Removal
   
•
Use a plastic panel removal tool to remove interior trim pieces without marring the surface.
•
Take care not to bend or scratch the trim and panels.
1.
Disconnect the negative (-) battery terminal.
2.
Remove the AVN Head unit.
(Refer to Body Electrical System - "AVN Head Unit")
3.
Loosen the mounting screws and remove the ADAS_PRK Unit (A).

4.
Disconnect the ADAS_PRK Unit connectors (A).

Installation
1.
Install in the reverse order of removal.
2.
Connect the cable of Diagnostic tool to the data link connector in driver side crash pad lower panel, and turn on the Diagnostic tool.
3.
Select the 'S/W Management' and 'Car model'.

4.
Select the 'Advanced Driver Assistance Systems_Parking' and Variant Coding.

Parking Collision-Avoidance Assist (PCA)

Components and components location
Components and Components Location

Schematic diagrams
Schematic Diagrams
Parking Collision-Avoidance Assist (PCA) Ultrasonic sensor

Parking Collision-Avoidance Assist (PCA) Rear view camera

Repair procedures
Removal
Parking Collision-Avoidance Assist (PCA) Unit
1.
Disconnect the negative (-) battery terminal.
2.
Remove the ADAS PRK Unit.
(Refer to Advanced Driver Assistance System (ADAS) - "Driver Parking Assistance System")
Parking Collision-Avoidance Assist (PCA) Ultrasonic sensor
1.
Disconnect the negative (-) battery terminal.
2.
Remove the ultrasonic sensor.
(Refer to Advanced Driver Assistance System (ADAS) - "Parking Distance Warning (PDW)")
Parking Collision-Avoidance Assist (PCA) Rear view camera
1.
Disconnect the negative (-) battery terminal.
2.
Remove the rear view camera.
(Refer to Advanced Driver Assistance System (ADAS) - "Rear View Monitor (RVM)")
Installation
1.
Install in the reverse order of removal.
Rear View Monitor (RVM)
Description and operation DescriptionRear view camera will activate when the backup light is ON with the ignition switch ON and the shift lever in the R position.This system is a supplemental syste ...