GF82.95-P-2018SXR Vehicle Remote Door Unlocking, Function
GF82.95-P-2018SXR Vehicle Remote Door Unlocking, Function
- Model 221
- with CODE (389) Mobile phone preinstallation with universal interface, USA/Canada
General
The vehicle remote door unlock function is a vehicle-related service of the Telematic Alarm Identification on Demand (emergency call system) (TELE AID) system. If the transmitter key (A8/1) was locked in the vehicle and no 2nd transmitter key is available, the service provider can remotely unlock the vehicle. The following function requirements must be met:
^ C. 30 ON
^ The TELE AID has been authorized by the service provider
^ A cellular mobile telephone network in adequate quality is available
^ To activate the service, the customer needs the Personal Identification Number (PIN) and the vehicle model
How to proceed
The customer contacts the service provider via telephone. The Customer Assistance Center (CAC) technician then requires the user name and PIN, which were assigned during authorization of the TELE AID, as well as the vehicle model to be able to check the authorization for vehicle remote door unlocking. Once the CAC employee has checked the request, the driver has to return to the vehicle and operate the trunk lid external operation switch (S88/8) for at least 15 s. The emergency call system control unit (N123/4) establishes a telephone connection to the service provider. The CAC employee compares the request of the vehicle with the customer request that was made over the phone. If the data match, the CAC employee enables the function with the corresponding "Remote Door Unlock" message, which is transmitted to the vehicle. The vehicle is unlocked.
Function sequence
Operation of the trunk lid external operation switch is read in by the rear SAM control unit with fuse and relay module (N10/2) and forwarded via the interior CAN to the central gateway control unit (N93). The central gateway control unit forwards the "Trunk lid external operation switch" message via the diagnostic CAN to the emergency call system control unit. The emergency call system control unit establishes a telephone connection to the service provider after receiving the "Trunk lid external operation switch operated" message. Depending on the mobile phone network quality, the phone connection is established over the frequency switchover control unit (N96) and, for model 221, over the telephone and GPS roof antenna (A2/49) or, for model 216, over the telephone and GPS antenna (A2/49) or over the emergency call system antenna splitter (A2/25) and over the emergency call system left backup antenna (A2/54) as well as the emergency call system right backup antenna (A2/55).
The CAC employee checks whether the customer has made a request over the phone and whether the corresponding authorization is present and transmits the corresponding "Remote Door Unlock" message to the vehicle. The emergency call system control unit transmits the message received to the central gateway control unit via the diagnostic CAN. The central gateway control unit transmits the message via the chassis CAN to the EIS control unit (N73), which initiates the unlocking of the vehicle. Once the customer has opened a vehicle door, he/she can confirm with the CAC employee using the voice connection that still exists that the remote door unlocking of the vehicle has been successful. Following this, the connection is terminated by the CAC employee.
