Ford Kuga

 Service Manual

Anti-Theft - Passive » Anti-Theft - Passive (System Operation and Component Description)
Component Description

Keyless vehicle module (KVM)

The PATS functionality is saved in the KVM. After pressing the start/stop button, the KVM activates the interior antennas, which then transmit a signal.

If there is a valid passive key in the vehicle interior, it sends an encrypted signal to the radio frequency receiver. The radio receiver forwards this signal to the KVM via a fixed wire. The KVM then forwards a corresponding identification query via the HS CAN (controller area network) to the PCM.

If a valid code was received to this query, then the engine can be started.

Interior antennas

Passive key (radio remote control with integrated emergency key)

A valid passive key must be present in the vehicle interior to start the engine.

The identification code is stored in the electronics of the passive key.

In addition, the emergency key contains the conventional PATS transponder for the emergency starting function.

The passive key sends an encrypted signal to the radio frequency receiver

RF receiver

The high frequency RF signal of the passive key is identified by the radio receiver and forwarded to the KVM via a fixed wire.

Transceiver of passive anti-theft system (emergency start function)

If the keyless start system is unable to recognise the passive key, the vehicle can be started via the emergency starting function.

To do this, there is a transceiver holder on the steering column. A conventional PATS transceiver is fixed to this holder.

To start the engine, the emergency key must be held against the transceiver cover in the lower steering column trim and the start/stop button pressed.

Alternatively, the emergency key can be inserted in the emergency key holder after removing the transceiver cover, and the start/stop button pressed.

The information from the PATS transponder of the emergency key is read out.

Instrument cluster

If the PATS system malfunctions, the general warning indicator lights up (yellow) and the corresponding fault is displayed in the message center.

System Diagram

System Operation

Component Description