Kia Sportage: Description and Operation

Description

•	Passive unlock via door driver side and passenger side

•	Passive locking via door driver side and passenger side

•	Passive start

•	Max. 2 FOBs can be handled by the system

•	Immobilizer backup antenna driver integrated into SSB for TP authentication (i.e. limp home mode)

•	Communication with engine management system

•	Communication with SRX

•	LF-RF communication

1.	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

2.	Passive locking The system allows the user to lock the vehicle by pushing a button on door handle with the SMART KEY FOB.

3.	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.

4.	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 SSB.

•	Power supply

•	Microcontroller with FLASH Memory

•	Single Line Interface to SRX

•	Single Line Interface to EMS

•	Input stage

•	LF antenna amplifier/driver

•	CAN communication with BCM

•	LIN communication with other unit (depending on platform)

•	Passive functionality: receives LF-challenge and sends automatically RF response.

•	Classic RKE function by action up to 6 push buttons.

•	Transponder-functionality in case of a flat battery or a disturbed communication.

•	LED for operation feedback and battery monitoring.

The FOB''s LED indicator may continue to light even with a low transmitter battery. If the performance or range of the FOB is less than expected, check the transmitter battery.

1.

Emitting LF Antennas: Inductive antennas in and at the vehicle are used to transform the current, driven by the SMK ECU antenna driver, into a 125 kHz magnetic field, which is the carrier for the SMART KEY challenge. Three antennas cover the vehicle’s exterior: two antennas in the Door Handles (DS and PS) cover the area around the doors; one antenna in the rear bumper covers the area around the trunk. Two antennas cover the vehicle’s exterior: two antennas in the Door Handles (DS and PS) cover the area around the doors. Up to three antennas cover the vehicle’s interior and the trunk interior: two in the passenger compartment and one in the trunk.

2.	Bidirectional Immobilizer Antenna (for Limp Home): The Immobilizer Backup Antenna is used for sending and receiving data: it emits a magnetic field (125 - 135 kHz challenge) and receives changes in the field strength (response of Transponder).

3.	External Receiver The SMART KEY FOB’s response is received via the external RF receiver, which is connected to the SMK ECU via a serial communication Line. The SMK ECU provides a connector pin for the serial communication Line.

Operation

Operating Range

•	At least one door is unlocked and two_steps timer is not running or

•	Two_steps timer is running and one of the push button except Front Left side is triggered

1.	Preconditions: All terminals OFF & at least one door open & locking status is not locked checked by SMK periodically every 100ms, as long as CAN/LIN active.

2.	Event: At least 1 door knob status changed from unlock to lock.

3.

SMK actions: • IF NO FOB-IN ACTIVE SMK performs a search for the FOBs in the interior of the vehicle. The same LF-strategy has to be used as it is defined for the ID out warning (registering only, no authentication) • IF FOB-IN ACTIVE SMK searches valid TP If no FOB or no TP has been found, no action is required. If any valid FOB or valid TP has been found, SMK unlocks the vehicle by sending a CAN Key Reminder unlock message with the FOB number. If any valid FOB has been found, SMK unlocks the vehicle by sending a CAN/LIN Key Reminder unlock message with the FOB number.

1.	Preconditions: All terminals OFF & any door (including tailgate) open & no FOB-IN & no locking status (checked by SMK periodically every 100ms, as long as CAN/LIN active)

2.	Vehicle action: Closing last door or tailgate with knobs locked state, or with a locking in progress

3.

SMK actions: Before elapsing 500ms after the closing if all doors are locked then: • IF NO FOB-IN ACTIVE SMK performs a search for the FOBs in the interior of the vehicle. The same LF-strategy has to be used as it is defined for the ID out warning (registering only, no authentication) • IF FOB-IN ACTIVE SMK searches valid TP If no FOB has been found, no action is required. If any valid FOB or valid TP has been found, SMK sends unlock command via CAN and activates ext. buzzer warning. If any valid FOB has been found, SMK sends unlock command via CAN/LIN and activates ext. buzzer warning.

1.	Preconditions: While (at least one door knob is unlocked) & (ACC ON or IGN ON) & (No FOB-IN) : • (All doors are closed) & (tailgate closed)

2.	Event: • User presses the push button in door handle or tailgate

3.	SMK actions: SMK performs a search for the FOBs outside of the vehicle; the same LF-strategy has to be used as it is defined for "Scenario Access with I/O Distinction".

1.	Preconditions: Same as passive locking precondition but with at least one door open.

2.	Event: User presses the door handle Push button .

3.

SMK actions: SMK performs a search for the FOBs outside of the vehicle; the same LF-strategy has to be used as it is defined for "Scenario Access with I/O Distinction". If no FOB has been found, no action is required. If the preconditions are no longer valid during buzzer active time (3 seconds), the SMK ECU stops the buzzer immediately.

1.	Preconditions: Same as passive locking precondition

2.	User action: • User presses the door handle Push button

3.	SMK ECU actions: • If ATWS(Anti Theft Warning System) is in DISARM status, SMK ECU performs a search for the FOB inside of the vehicle (use "Door Lock Warning 3" scenario)

1.

SMK actions: As long as the preconditions are valid, the SMK ECU performs a periodical search for the FOBs in the interior of the vehicle; the same LF-strategy has to be used as it is defined for the ID out warning (registering only, no authentication); periodical means, the search is done every 3 seconds. If no FOB has been found, the SMK ECU starts Key out indicator lamp activation as all preconditions are valid and will perform another search 3 seconds later.

•	Unlocking / locking of doors or tailgate (or tailgate depending of the vehicle configuration): use of mechanical key

ID OUT Warning

1.	Preconditions: • (ACC or IGN1) & (any door open or tailgate open)

2.	Event: The last opened door is closed

3.

SMK action: SMK searches for a SMART KEY FOB in the interior. • If no valid SMART KEY FOB is found, the SMK activates external buzzer and also sends ID OUT WNG via CAN (exterior buzzer warning and internal buzzer warning). • If a door is opened and closed again during terminals on and inside valid FOB, SMK re-enables the authentication and stops the warning. If the terminal is in ACC, SMK shall turn on immobilizer lamp.

If there is a LF error (LF overheating or LF antenna failure), the system will have the same behavior as it is with no FOB found.

–	SMK replacement: SMK is not learnt, SMART FOB is already learnt with same PIN code

–	Additional or new keys teaching: SMK is already learnt with same PIN code

•	It is for starting at virgin condition

•	All related parts are virgin condition (Smart key, IPM, ECM)

•	When virgin smart key is inserted in smart key holder, possible to start, IG ON and ACC position

•	Press brake pedal in P or N range

•	After inserting virgin smart key to holder, push start button once.