Hyundai Ioniq: Emergency Call System / Emergency Call (eCall) Unit. Repair procedures

Hyundai Ioniq (AE) 2017-2025 Service Manual / Body Electrical System / Emergency Call System / Emergency Call (eCall) 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.

1.	Disconnect the negative (-) battery terminal.

2.	Remove the floor console assembly. (Refer to Body - "Floor Console Assembly")

3.	Remove the crash pad side cover [LH] (A) by using a remover.

4.	Loosen the mounting screws and remove the crash pad lower panel (A).

5.	Press the lock pin and separate the diagnosis connector (A)

6.	Remove the crash pad side cover [RH] (A) by using a remover.

7.	Loosen the mounting screw and remove the crash pad center garnish (A).

8.	Loosen the mounting screws and remove the A/C & heater controller unit (A).

9.	Press the lock pin and separate the A/C & heater controller unit connectors (A).

10.	Disconnect the ecall unit connector (A) and antenna connectors (B)

11.	Loosen the mounting bolts and nuts and remove the e-call unit (A) towards the console. [LHD] [RHD]

Replacement

e-Call Unit Back Up Battery (BUB)

[LHD]

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 cover (A).

4.	Replace the back-up battery (A).

[RHD]

1.	Disconnect the negative (-) battery terminal.

2.	Remove the crash pad side cover [RH] (A) by using a remover.

3.	Loosen the mounting screw and remove the crash pad center garnish (A).

4.	Loosen the mounting screws and remove the A/C & heater controller unit (A).

5.	Press the lock pin and separate the A/C & heater controller unit connectors (A).

6.	Disconnect the ecall unit back battery (BUB) service cover (A).

7.	Replace the back-up battery (A) through service space (B).

Installation

If RED LED is on, check the eCall system with the diagnostic tools.

–	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 main crash pad assembly.

3.	Connect the negative (-) battery terminal.

4.	Perform the "eCall Parameter Download" (Refer to Inspection - " Inspection with Diagnostic Tools")

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.

•	Warranty of Back-up Battery is 3years.

•	Inspect the back-up battery every three years and replace it if necessary. (Refer to Emergency Call Unit - "Repair Procedures")

•	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) Unit. Components and components location

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Emergency Call (eCall) Button. Schematic diagrams

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