Anti-Theft Indicator

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Replacement of the passive anti-theft system (PATS) transceiver does not require the PATS keys to be programmed into the instrument cluster (IC) again.

NOTE: Make sure any aftermarket remote start systems have been removed from the vehicle before any PATS-related no-start concerns are investigated.

NOTE: A minimum of 2 PATS keys must be programmed into the IC before the vehicle will start.

NOTE: If the IC or the PCM is being replaced (or both), the parameters must be reset in both modules or the vehicle will experience a PATS no-start. Refer to Passive Anti-Theft System (PATS) Parameter Reset .

NOTE: The smart junction box (SJB) is also known as the generic electronic module (GEM).

PATS uses a visual anti-theft indicator located in the IC. The indicator proves out for 3 seconds when the ignition key is in the ON or START position under normal operation. If there is a PATS concern, this indicator either flashes rapidly or glows steadily when the ignition key is turned to the ON or START position. PATS also flashes the anti-theft indicator every 2 seconds when the ignition key is in the OFF position to act as a visual theft deterrent. Refer to INSTRUMENT CLUSTER for additional information on the anti-theft indicator.

PATS is active only for a few seconds when the vehicle is starting. It is not a PATS concern if the vehicle stalls after it has been running for a minimum of 3 seconds. PATS will not disable a running vehicle.

A PATS no-start may involve a vehicle no-start due to either the fuel injectors not operating or the starter not operating (or both). If the PATS theft light does not prove out and one (or both) of the previous conditions are present, it may be due to a PATS issue. If the theft light proves out, and the vehicle does not start, it is probably not a PATS issue. Refer to the Introduction - Gasoline Engines . If the theft light does not illuminate at all, it may be an IC issue. Refer to the Symptom Chart in this section for additional information. A low battery voltage may cause the PATS to allow starter operation, but may keep the fuel injectors from operating.