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Home >> Jaguar >> 2012 >> XF Supercharged >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Handles, Locks, Latches & Entry Systems -- XF/X250 >> Handles, Locks, Latches And Entry Systems >> Description And Operation >> Handles, Locks, Latches And Entry Systems - System Operation And Component Description (G1535380) >> Passive Entry

Passive Entry

On vehicles fitted with the optional passive entry system, the vehicle can be unlocked without the use of a key blade or pressing switches on the Smart Key. The Smart Key operates the passive entry system in addition to the passive start system. For additional information, refer to: Anti-Theft - Passive (Description and Operation), Anti-Theft - Passive (Description and Operation), Anti-Theft - Passive (Description and Operation). The passive entry system is controlled by the KVM and five low frequency antennas. One antenna located in each door handle and one antenna located behind the rear bumper cover.

When a vehicle door handle is pulled to the first five-percent of its travel and the Smart Key is within one meter of the handle; the Smart Key receives the low-frequency signal transmitted from the KVM. The Smart Key responds with a radio frequency transmission of its authorization code. The radio frequency signal is received by the central locking radio-frequency receiver and passed to the KVM which checks and approves the code as valid. Once the handle is pulled to eighty percent of its travel the KVM then drives the fast latch directly to allow the door to be opened. The KVM also transmits an unlock request to the CJB (central junction box). The CJB then passes an unlock request to the door modules.

Locking of the vehicle is performed by pressing one of the switches located on each exterior door handle, with the Smart Key within a one meter range of the vehicle. When the door handle switch is pressed, the KVM transmits a low-frequency signal via the low-frequency handle antenna to the Smart Key. The Smart Key transmits a radio frequency signal which is verified by the KVM and allows the doors to be locked or double locked and the alarm system to be armed.

To double lock the vehicle, the switch on the exterior door handle must be pressed twice within three seconds, with the Smart Key within one meter range of the vehicle.

If a door, the hood or the tailgate is ajar when an attempt to lock the vehicle is made, an error tone is emitted and no locking action will occur.

Refer to: Anti-Theft - Active (Description and Operation).