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Hyundai Tucson: Configuration of eCall Controller

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Body Electrical System / Emergency Call System / Configuration of eCall Controller

Input button & Indicator

Input button & Indicator

SOS button : Press the button to place a call to the call center.

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

  1. Emergency call unit
  2. Emergency call system button
  3. Emergency call system MIC
  4. Roof antenna
  5. Head unit (AVN)
  6. Emergency call speaker
  7. Supplemental Restraint System Control Module (SRSCM)

Removal

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

  • The eCall unit.
  • The Back-up Battery (BUB).
  • The eCall speaker and MIC.
  • The eCall antenna and Roof antenna.
  1. Disconnect the negative (-) battery terminal.
  2. Remove the crash pad center panel.

    (Refer to Body - "Crash Pad Center Panel")

  3. Disconnect ecall unit connectors.
  4. Remove the ecall unit (A) after loosening mounting nuts,

Replacement

e-Call Unit Back Up Battery

  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),

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 crash pad center panel.
  3. Connect the negative (-) battery terminal.
  4. Perform the "eCall Parameter Download" (Refer to Inspection - " Inspection with Diagnostic Tools")

Inspection

Inspecting Back-Up Batteiy

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 batteiy 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.

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