Emergency Call System

Components and Component Location

Components

1. Head Unit (AVN, Audio) 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 Antenna 8. Emergency Call Speaker

Description and Operation

Description

Emergency call (eCall): When a collision occurs or a user request is detected, it notifies the call center of the vehicle status via wireless network so that the center can provide necessary emergency assistance.

1. Emergency Call 2. Wireless Communication Network

3. Public Safety Answering Point (PSAP) 4. Emergency rescue service

eCall Function

1. 1
   Automatic notification function: Detects an airbag deployment signal and automatically notifies the call center of the incident.

   1. Accident occurred (condition: ignition "ON")
   2. Collision signal: Sent from the Airbag Control Unit (ACU) to the eCall unit.
   3. Making the call: The emergency call is placed to the most appropriate Public Safety Answering Point (PSAP).
   4. Transmitting MSD: After the connection is established, the Minimum Set of Data (MSD) is transmitted using in-band modem communication (technology that transmits data over the telephone voice channel).
   5. Connects to a call center agent, who in turn provides emergency assistance.
2. 2
   Manual notification function: The driver can press the SOS button to manually notify the call center of an accident.

   1. The driver decides to press the SOS button.
   2. Making the call: The emergency call is placed to the most appropriate PSAP.
   3. Transmitting MSD: After the call is connected, the MSD is transmitted using in-band modem communication (technology that transmits data over the telephone voice channel).
   4. Connects to a call center agent, who in turn provides emergency assistance.

   

eCall Controller Configuration. Input Buttons and Indicators. SOS button: Press this button to call the call center. SOS TEST button: Press and hold this button for 10 seconds or more to enter test mode and reset the eCall system. eCall indicator lamp: The red and green LEDs illuminate for 3 seconds after ACC is turned on and remain off in standby until the key is turned off. The red LED illuminates when a problem occurs in the eCall system. The green LED illuminates when the eCall system is operating normally.