Description And Operation: Description: Notes

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.

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 integrated into SSB for TP authentication (i.e. limp home mode)
Communication with engine management system
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 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 pushing the key into the SSB.