Communication Network Diagram
| Abbreviation | Explanation |
|---|---|
| C_CAN | Chassis Controller Area Network |
| B_CAN | Body Controller Area Network |
| MM_CAN | Multimedia Controller Area Network |
| SMK | Smart Key ECU |
| DDM | Driver Door Module |
| ADM | Assist Door Module |
| PSM | Power Seat Module |
| SCM | Steering Column Module |
| IMS | Integrated Memory System |
| MFSW | Multi-Function Switch |
| SWRC | Steering Wheel Remote Controller |
| PCU | Power-train Control Unit |
| ECU | Engine Control Unit |
| TCU | Transmission Control Unit |
| EPB | Electronic Parking Brake |
| ABS | Anti-lock Brake System |
| VDC | Vehicle Stability Control |
| SCC | Smart Cruise Control |
| DATC | Dual Automatic Temp Control |
| MDPS | Motor Driven Power Steering |
| SAS | Steering Angle Sensor |
| TPMS | Tire Pressure Monitoring System |
| ACU | Airbag Control Unit |
| AVM | Around View Monitor |
| CLUM | Cluster Module |
| HU | Head Unit |
| RRC | Rear Remote Control |
| IPM | Intelligent Integrated Platform Module |
The SMART KEY system is a system that allows the user to access and operate a vehicle in a very convenient way. To access the vehicle, no traditional key or remote control unit is needed.
The user carries a SMART KEY FOB which does not require any conscious actions by the user (e.g. operate a RKE button). The SMART KEY system is triggered by pressing a push button in the door handle.
After being triggered the vehicle sends out a request in a limited range. If the SMART KEY FOB receives this request, it automatically sends a response to the vehicle. Then the system decides whether to perform a particular action (unlocking, locking...) or remain inactive.
In a similar manner the vehicle's Electrical Steering Column Lock (ESCL) is released. Again, a communication between the vehicle and the SMART KEY FOB is needed before any actions will be performed.
The System offers the following features:
- Passive unlock via door driver side and passenger side
- Passive locking via door driver side and passenger side
- Passive start
- Passive access trunk via the trunk lid switch at the trunk
- Passive locking via tailgate
- Max. 2 fobs can be handled by the system
- Immobilizer backup antenna driver integrated into FOB-HOLDER for TP authentication (i.e. limp home mode)
- Communication with engine management system
- Communication with SRX
- LF-RF communication
- Passive unlock
The system allows the user to access (unlock) the vehicle without performing any actions with the SMART KEY FOB. This feature could be different depending on platform as follows:
- Pressing Push button in door handle
- Passive locking
The system allows the user to lock the vehicle by pushing a button on door handle with the SMART KEY FOB.
- Button start
The system allows the user to release ESCL and to switch the power modes (Off, Accessory, Ignition), as well as to start and stop the vehicle's engine without performing any actions with the SMART KEY FOB. See BUTTON ENGINE START SYSTEM specification.
- LIMP HOME Mode
Additionally, the system offers so called "limp home mode", which is the user can operate all vehicle functions by inserting the key into the FOB HOLDER.