Vehicle remote door unlocking, function - GF82.95-P-2018CWU
MODEL 204.0 with CODE (359) TELE AID emergency call system
Function requirements
- Status "circuit 30 ON"
- Telematic Alarm Identification on Demand (emergency call system) (TELE AID) system authorized and operating error-free
- The vehicle-related vehicle remote door unlock service is separately authorized
- An emergency call system control unit (N123/4) communication module authorized for the corresponding vehicle-related service is configured ex-factory with the telephone number of the corresponding service provider
- The customer is registered and authorized in the Customer Assistance Center (CAC)
- A mobile telephone network is available in adequate strength and quality
- Customer telephone call with the CAC via telephone and query on vehicle remote door unlock as well as legitimization at CAC
- Actuation of trunk lid external operation switch (S88/8) for t = 15 s at a point in time agreed with CAC
- A higher-priority vehicle-related service is not active
General
The vehicle remote door unlock function enables the customer to have his/her vehicle remotely unlocked when he/she, e.g. has lost the transmitter key (A8/1) and a 2nd transmitter key is not available.
Vehicle remote door unlock function sequence
Actuation of the trunk lid external operation switch is received by the emergency call system control unit in the following way:
- Discrete line
- Rear SAM control unit with fuse and relay module (N10/2)
- Interior CAN
- Front SAM control unit with fuse and relay module (N10/1)
- Diagnostic CAN
The emergency call system control unit then automatically transmits an SMS with the following data to the CAC via the communication module integrated into the emergency call system control unit:
- Chassis number
- Vehicle model
A voice connection to the CAC is also set up via the communication module integrated into the emergency call system control unit. The communication module integrated into the emergency call system control unit transmits the mobile phone signals or data in the following way:
- Discrete line
- Frequency switchover control unit (N96), with code (389) Mobile phone preinstallation with universal interface, USA/ Canada
- Discrete line
- Multifunction antenna (A28/11)
The CAC compares the sent data with the query and customer legitimization and if the data matches up a "vehicle remote door unlock request" is sent to the vehicle.
The communication module integrated into the emergency call system control unit receives the "vehicle remote door unlock request" and the mobile phone signals or data in the following way:
- Multifunction antenna
- Discrete line
- Frequency switchover control unit, with code (389) Mobile phone preinstallation with universal interface, USA/Canada
- Discrete line
After receiving the "vehicle remote door unlock request", the emergency call system control unit sends the request in the following way to the electronic ignition lock control unit (N73):
- Diagnostic CAN
- Front SAM control unit with fuse and relay module
- Interior CAN
The EIS [EZS] control unit then initiates the unlocking of all vehicle doors and the unlocking of the trunk lid.
If the "vehicle remote door unlock request" from the CAC is rejected, then the vehicle remote door unlock function is blocked for t = 15 min.
The execution of the vehicle remote door unlock is displayed by a message in the instrument cluster (A1).
In the event of a vehicle remote door unlock, any other vehicle-related services (e.g. vehicle remote locking) and, for vehicles with code (389) Mobile phone preinstallation with universal interface, USA/Canada, active mobile phone connections are interrupted.
In the event of a multifunction antenna malfunction (e.g. defective because of rollover) the emergency call system control unit automatically uses the emergency call system antenna (A2/52) to transmit mobile phone signals or data.
| Electrical function diagram for TELEAID remote door unlock | With code (389) Mobile phone preinstallation with universal interface, USA/Canada Comfort telephony | PE82.95-P-2053-99FAA | |
| Telephone and GPS roof antenna component description | A28/11 | GF82.62-P-4119CW | |
| Frequency switchover control unit, component description | N96 With code (389) Mobile phone preinstallation with universal interface, USA/Canada Comfort telephony |
GF82.62-P-4204CWU | |
| Emergency call system control unit, component description | N123/4 | GF82.95-P-3212CWU | |
| Emergency call system backup antennas component description | A2/52 | GF82.95-P-4002CWU |