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Crown NA's SAIF Anti-Theft Idle

The NextGen Charger, starting with the 2011 model year, uses a Push-To-Start system. With the factory key FOB in the pocket of an officer sitting in the car, integrated antennas detect the factory FOB and allow the car to be started simply by pushing a button.

With the factory FOB outside the Charger, and the engine running, the car will stay running indefinitely. The 2011 and newer Charger with Push-To-Start will allow the gear selector to be shifted freely from Park to Drive or Reverse. That means, with the officer away from the idling Charger, it can be driven off by someone without the factory FOB. Once the engine is shut off, the Charger will not restart without the factory FOB present, but if it has been stolen from the scene, it’s a little late for that counter-measure.

One of the available “idling security” solutions is the Self-Arming Immobilizer FOB (SAIF) from Crown North America. Crown NA is the certified, off-line, factory upfitter for the Dodge Charger Pursuit, Dodge Durango SSV and RAM 1500 SSV. They are a division of Leggett & Platt Incorporated, a company that has been upfitting police vehicles for years.

SAIF is electronically linked to the Brake Transmission Shift Interlock (BTSI). SAIF is installed in the circuit to the BTSI, and controls power to the interlock. When armed, SAIF cuts off power to the BTSI. That means stepping on the brake pedal will not unlock the transmission gear selector – the Charger Pursuit remains in Park. When disarmed and the power to the BTSI restored, stepping on the brake will once again allow the shifter to be moved from Park to Drive, Neutral or Reverse.

At the introduction of SAIF, it uses a separate FOB. Simply put, the FOB with SAIF on the same key ring as the Push-To-Start factory FOB. Crown NA has plans to incorporate the SAIF anti-theft technology directly into the factory FOB.

SAIF can be armed and disarmed a number of ways. SAIF is self-activated and can be triggered by a number of methods. The most popular method is the driver’s door trigger. When the door opens, regardless of whether in stealth mode or not, SAIF will be armed-activated.

It can be also armed by the park sense, the emergency siren light controller, a proximity switch, or can be manually activated through a standard hidden switch or switches somewhere in the vehicle.

It can then be disarmed-deactivated in one of three ways, chosen by the fleet’s choice of hook-up: 1) by pressing the FOB; 2) by pressing or sliding the siren-light controller; 3) by pressing any other switch specified by the department; or 4) using the proximity sensor.

SAIF also offers control over two additional circuits. For example, SAIF may be wired to the gun lock, preventing it from being unlocked when SAIF is armed. For another example, SAIF may be wired to the ignition, shutting off the engine after a specified period of time. These two circuits are available for many uses, to control anything that needs to be secured when the officer is out of the vehicle.

Finally, SAIF also includes a “run stop” function. When SAIF is armed, it can shut the engine off using the FOB. The SAIF kit includes the FOB sending unit and a vehicle receiver-relay system. The cost for the SAIF technology (installed by Crown NA offline at the factory) is $485 MSRP. Fleet pricing is also available.

Published in Police Fleet Manager, Jul/Aug 2012

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