Transponder Key: Description

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Ignition Key SKIS Components

Courtesy of DAIMLERCHRYSLER CORP.

Each ignition key (2) used in the Sentry Key Remote Entry System (SKREES), sometimes referred to as the Sentry Key Immobilizer System (SKIS) has a transponder chip included on the circuit board (4) beneath the cover (1) of the integral Remote Keyless Entry (RKE) transmitter (3). In addition to having to be cut to match the mechanical coding of the ignition lock cylinder and programmed for operation of the RKE system, each new Sentry Key has a unique transponder identification code that is permanently programmed into it by the manufacturer, and which must be programmed into the Sentry Key Remote Entry Module (SKREEM), sometimes referred to as the Wireless Control Module (WCM), to be recognized by the SKREES/SKIS as a valid key.

Fig 2: Identifying Sentry Key Transponder

Courtesy of DAIMLERCHRYSLER CORP.

The Sentry Key transponder cannot be adjusted or repaired. If faulty or damaged, the entire key and RKE transmitter unit must be replaced.