Vehicle remote door unlock, function - GF82.95-P-2018G
MODEL 463.249 up to 31.8.08 as of model year 2007 model year 07.5, YoM 07
MODEL 463.271 as of model year 2007 model year 07.5, YoM 07
MODEL 463.237 as of model year 2009/YoM 08
Function requirements, general
- C. 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 user is registered and authorized in the service center (Customer Assistance Center)
- One mobile phone network is available in sufficient strength and quality
- A higher-priority vehicle-related service is not active
Vehicle remote door unlock, general
The vehicle remote door unlock function enables the user to have his/her vehicle remotely unlocked if he has been locked out or has lost the transmitter key (A8/1), for example, and does not have a second transmitter key to hand.
The vehicle remote door unlock is triggered by the rear-end door external operation switch (S88/8).
Vehicle remote door unlock function sequence
The user notifies the service center, provides legitimization and requests that the vehicle be remotely unlocked. The rear-end door external operation switch must then be operated for at least t = 15 s at a time agreed by phone with the service center.
The actuation of the rear-end door external operation switch is read in by the emergency call system control unit as follows: Via a discrete line to the rear signal acquisition and actuation module (SAM) (N10/2), and from there via the interior CAN to the EIS [EZS] control unit (N73), and then via the diagnostic CAN.
The emergency call system control unit then automatically transmits an SMS (SMS = Short Message Service) with the following data to the service center via the communication module that is integrated in the emergency call system control unit:
- Chassis number
- Vehicle model
A voice connection to the service center is also set up at the same time via the communication module that is integrated in the emergency call system control unit. The communication module that is integrated in the emergency call system control unit transmits the cellular phone signals or data via a discrete line to the radio and cell phone antenna splitter (A28/1) and then to the telephone and fax antenna (A2/22).
The service center compares the data sent with the request and customer legitimization and if the data matches a "vehicle remote door unlock request" is sent to the vehicle.
The communication module that is integrated in the emergency call system control unit receives the "vehicle remote door unlock request" discretely via the telephone and fax antenna and the radio and cell phone antenna splitter.
After receiving the "vehicle remote door unlock request", the emergency call system control unit sends the request to the EIS [EZS] control unit via diagnostic CAN.
The EIS [EZS] control unit then initiates the unlocking of all vehicle doors as well as the unlocking of the rear-end door.
The execution of the vehicle remote door unlock is displayed by a message in the instrument cluster (A1).
If the "vehicle remote door unlock request" from the service center is rejected, then the vehicle remote door unlock function is blocked for t = 15 min.
| Instrument cluster, component description | A1 | GF54.30-P-6000G | |
| Rear SAM control unit with fuse and relay module, component description | N10/2 | GF54.21-P-6030G | |
| Electronic ignition/starter switch control unit (EIS), component description | N73 | GF80.57-P-6000G | |
| Emergency call system control unit, component description | N123/4 | GF82.95-P-3212G | |
| Telephone antenna, component description | A2/22 | GF82.62-P-4117G | |
| Emergency call antenna splitter component description | A28/1 | GF82.95-P-4001G |