Hyundai Elantra CN7: Emergency Call System - Body Electrical System - Hyundai Elantra CN7 2021-2024 Workshop ManualHyundai Elantra CN7: Emergency Call System

Description and operation

Description
Emergency Call (eCall)
When an accident occurs or the user's request is detected, it notifies the call center of the vehicle status using the wireless network so that the center can provide necessary emergency service.

1. Emergency Call
2. Radio Communication network
3. Public-Safety Answering Point (PSAP)
4. Emergency rescue service

eCall Function
1.
Automatic notification function : It detects airbag signal that is triggered by accident and automatically notifies the call center of the accident.
(1)
An accident occurs (condition : IGN ON)
(2)
Collision signal : Sent from the airbag control unit (ACU) to the eCall unit
(3)
Place a call : An emergency call is placed to the most appropriate public-safety answering point (PSAP).
(4)
Transmit MSD : After the call is connected, the Minimum Set of Data (MSD) is transmitted using the in-band communication (technology that transmits data through telephone voice channel).
(5)
Connect to a call center agent, who in turn provides emergency service.
   
•
The eCall system may not work properly if the vehicle damage is grave or the airbag does not operate due to a minor accident.
2.
Manual notification function : The driver decides to operate the SOS button to notify the call center of the accident manually.
(1)
The driver decides to operate the SOS button.
(2)
Place a call : An emergency call is placed to the most appropriate PSAP.
(3)
Transmit MSD : After the call is connected, the MSD is transmitted using the in-band communication (technology that transmits data through telephone voice channel).
(4)
Connect to a call center agent, who in turn provides emergency service.
   
•
If you want to cancel the connection attempt while placing a call by pressing the SOS button, press the button again.
Configuration of eCall Controller

Input button & Indicator
SOS button : Press the button to place a call to the call center.
SOS TECT button : Press the button for 10 seconds or more to perform the test mode and reset the eCall system.
LED indicator lamp : The red and green LEDs turn on for 3 seconds after the ACC is on and stay turned off in standby until the key is turned off.
The red LED turns on when there is a problem with the eCall system.
The green LED turns on when the eCall system is operating normally.

Components and components location

Components

1. AVN head unit & monitor
2. Emergency call system button
3. Emergency call system MIC
4. Roof antenna
5. Emergency call unit
6. Supplemental Restraint System Control Module (SRSCM)
7. Emergency call crash pad antenna
8. Emergency call speaker

Emergency Call (eCall) Unit

Components and components location
Component

   
•
The eCall unit for AVN is equipped in AVN head unit.
Repair procedures
Removal
   
You must make sure turn RED LED ON if you do any of the following.
–
Replace the eCall unit.
–
Replace the Back-up Battery (BUB).
–
Replace the eCall speaker and MIC.
–
Replace the eCall antenna and Roof antenna.
   
•
Take care not to scratch the cluster fascia panel and related parts.
•
When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components.
•
Be careful to store and handle the crash pad when removing/installing because lubricant and oil can leave a stain on the trim.
eCall Unit
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad lower panel.
(Refer to body - "Crash Pad Lower Panel")
3.
Remove the eCall unit (A) after loosening the mounting screws and disconnecting the eCall unit connectors.

eCall Speaker
1.
Disconnect the negative (-) battery terminal.
2.
Using a screwdriver or remover, remove the crash pad center speaker grille (A).

3.
Remove the ecall speaker (A) after loosening mounting screws.

4.
Disconnect the speaker connector.
Replacement
eCall Unit Back Up Battery (BUB)
1.
Disconnect the negative (-) battery terminal.
2.
Remove the eCall Unit.
3.
If it is necessary to replace the back-up battery, remove the back-up battery after removing the back-up battery cover (A).

Installation
   
You must carry out Test Mode if you do any of the following.
–
Replace the eCall unit.
–
Replace the Back-up Battery (BUB).
–
Replace the eCall speaker and MIC.
–
Replace the eCall antenna and Roof antenna.
eCall Unit
1.
Install the eCall unit.
2.
Install the crash pad lower panel.
3.
Connect the negative (-) battery terminal.
eCall Speaker
1.
Install the eCall speaker.
2.
Connect the negative (-) battery terminal.
Inspection
Inspecting Back-Up Battery
Back-up battery (BUB) embedded in the eCall system has a finite lifespan and using it for a long time may decrease its charging/discharging performance.
The back-up battery guarantees the operation of the eCall system when the vehicle battery cannot be used due to an accident. Be sure to inspect the back-up battery if the red LED turns on and replace it if necessary.
   
•
Refer to the owner's manual for the Back-Up Battery (BUB) replacement cycle.
   
•
The eCall system is aimed to place an urgent call to the call center during an emergency. Arbitrarily removing or operating the system components may affect the safety of people and may result in false notification of an accident to the emergency call center.
   
•
The red LED turns on when there is a problem with the eCall system.
•
If one or more DTCs for the eCall system are issued, check the eCall system(Unit, Button(Built in overhead console), Speaker, Antenna) by diagnostic tools.
Inspection with Diagnostic Tools
In the eCall system, failure can be quickly diagnosed by using the vehicle diagnostic system.
The diagnostic system provides the following information.
1)
Self diagnosis : Checking failure and code number (DTC)
2)
Current data : Checking the system input/output data state
1.
Select the "Car Model" and the "eCall System" to be checked in order to check the vehicle with the tester.
2.
To inquire the cause of trouble for each module by self diagnosis, select 'Diagnostic Trouble Code'.

3.
Select the 'Current Data' menu to check the current state of the input/output data.

eCall System Reset
The eCall System Reset function is to reset when eCall is locked or stopped.
   
•
The eCall System Reset function may result a faise call to the PSAP (Public Safety Answering point) and it also may cause a malfunction to the system, therefore, the unauthorized use of this function is strictly prohibited.
1.
Turn the ignition switch OFF.
2.
Connect the diagnostic tools.
3.
Turn the ignition switch ON without the engine running.
4.
Select the "Car Model" and "S/W Management".

5.
Select the "eCall System Reset"

6.
Follow the screen instructions to perform the "eCall System Reset".

eCall Parameter Download
eCall Parameter Download is used to change the parameter value of the eCall law in Europe.
1.
Turn the ignition switch OFF.
2.
Connect the diagnostic tools.
3.
Turn the ignition switch ON without the engine running.
4.
Select the "Car Model" and "S/W Management".

5.
Select the "eCall Parameter Download"

6.
Follow the screen instructions to perform the "eCall Parameter Download".

Emergency Call (eCall) Button

Components and components location
Component

Repair procedures
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Using a remover and remove the overhead console (A).

3.
Disconnect the overhead console connectors (A).

Installation
1.
Install the eCall button and button cover.
2.
Install the overhead console assembly after connecting the connector.
3.
Connect the negative (-) battery terminal.

Emergency Call (eCall) Antenna

Schematic diagrams
Components

Repair procedures
Removal
Roof Antenna
1.
Disconnect the negative (-) battery terminal.
2.
Remove the roof trim.
(Refer to Body - "Roof Trim Assembly")
3.
Disconnect the roof antenna connector (A).

4.
Remove the roof antenna (A) after loosening a nut (B).

Crash Pad Antenna
1.
Disconnect the negative (-) battery terminal.
2.
Remove the main crash pad assembly.
(Refer to Body - "Main Crash Pad Assembly")
3.
Loosen the mounting screws and then remove the crash pad antenna (A).

Installation
Roof Anenna
1.
Connect the roof antenna connectors.
2.
Install the roof trim assembly.
   
•
Make sure that the cables and connectors are plugged in properly.
•
Check the audio system.
Crash Pad Antenna
1.
Connect the roof antenna connectors and install the roof antenna.
2.
Install the main crash pad assembly.
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