Sentry Key Immobilizer System

WARNING: This page is about a different car, the 2016 Dodge Charger and 2015 Dodge Charger. However, it is still accessible from the selected car via links, so may be relevant.

The Sentry Key Immobilizer System (SKIS) is factory-installed standard equipment on this model. The SKIS provides passive vehicle protection, immobilizing the vehicle by preventing the engine from operating unless a valid electronically encoded key or FOB with Integrated Key (FOBIK) is detected. In vehicles equipped with the Passive Entry Keyless Go (PEKG) system, a valid encoded key or FOBIK must only be present somewhere within the passenger compartment of the vehicle for the engine to continue to operate.

NOTE:

Charger Pursuit vehicles also have a unique Secure Park feature that will prevent the transmission gear selector of a vehicle left idling from being shifted out of Park (P ) or moving more than about 0.9 meters (3 feet) if there is no valid FOB with Integrated Key (FOBIK) detected within the interior of the vehicle. This feature can be enabled using a diagnostic scan tool. Once enabled, it is activated or deactivated by depressing the center remote radio button on the back of the steering wheel. While this feature is passive and does prevent vehicle theft, it actually relies primarily upon features of the Keyless Go (KG) portion of the Passive Entry Keyless Go (PEKG) system, which is discussed in further detail elsewhere within this service information. Refer to MODULE, RADIO FREQUENCY (RF HUB), OPERATION .

The SKIS includes the following major components, which are described in further detail elsewhere in this service information:

Keyless Ignition Node - The Keyless Ignition Node (KIN) is located in the instrument panel just inboard of the steering column. Refer to MODULE, KEYLESS IGNITION NODE, DESCRIPTION .
Low Frequency Antenna - Vehicles equipped with the optional Passive Entry Keyless Go (PEKG) system have several low frequency antenna units strategically placed within the vehicle.
Powertrain Control Module - The Powertrain Control Module (PCM) (also known as the Engine Control Module/ECM) is located in the engine compartment. Refer to MODULE, POWERTRAIN CONTROL, DESCRIPTION .
Radio Frequency Hub Module - The Radio Frequency Hub Module (RFHM) (also known as the RF Hub) is located on the package shelf support behind the rear seat back where it is concealed beneath the package shelf trim. Refer to MODULE, RADIO FREQUENCY (RF HUB), DESCRIPTION .
Sentry Key Transponder - A Sentry Key transponder microchip is located within each FOB with Integrated Key (FOBIK). Refer to KEY, TRANSPONDER, DESCRIPTION .

The PCM and the RFHM each contain a microcontroller and programming that allow them to communicate with each other and other electronic modules in the vehicle using the Controller Area Network (CAN) data bus. In addition, the KIN and the RFHM communicate with each other using a Local Interface Network data bus. Refer to COMMUNICATION, DESCRIPTION .