Sentry Key Immobilizer System

WARNING: This page is about a different car, the 2020 Chrysler 300 and 2019 Chrysler 300. 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, the valid FOBIK must only be present somewhere within the passenger compartment of the vehicle for the engine to continue to operate.

The Radio Frequency Hub (RF-Hub) is the primary component of the SKIS. It is also the receiver for the Remote Keyless Entry (RKE) system, the Keyless Go (KG) system, the Passive Entry (PE) system and the Remote Start system on vehicles so equipped. The RF-Hub is located near the center of the shelf support behind the rear seat back and is concealed beneath the package tray interior trim.

The Keyless Ignition Node (KIN) includes the integral ignition switch push button. The KIN is located in the instrument panel, just to the right of the steering column. The remainder of the KIN including its mounting provisions and electrical connections are concealed within the instrument panel.

The SKIS used in combination with the export premium version of the Vehicle Theft Alarm (VTA) adds a steering shaft lock feature that provides passive protection by preventing the vehicle from being steered unless a valid encoded FOBIK is present somewhere within the passenger compartment of the vehicle. The export premium version of the VTA is only available in vehicles manufactured for sale in certain markets where it is required equipment.

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

KIN - The KIN is located in the instrument panel just inboard of the steering column. Refer to MODULE, KEYLESS IGNITION NODE (KIN), DESCRIPTION .
Low Frequency (LF) Antenna - Vehicles equipped with the PEKG system have several low frequency antenna units strategically placed within the vehicle.
Powertrain Control Module (PCM) - The PCM is located in the engine compartment. Refer to MODULE, POWERTRAIN CONTROL (PCM), DESCRIPTION .
RF-Hub - 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 FOBIK. Refer to KEY, TRANSPONDER, DESCRIPTION .
Shaft Lock Module - A shaft lock module is located on the lower end of the steering column below the instrument panel in the passenger compartment of vehicles built for sale in certain export markets and equipped with the export premium version of the VTA.

The PCM and the RF-Hub 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, the RF-Hub and the shaft lock module communicate with each other using a Local Interface Network data bus. Refer to COMMUNICATION, DESCRIPTION .