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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 69 (Anti-Theft System - Passive Anti-Theft System (Pats)) >> Diagnostic Tests >> Anti-Theft >> Principles of Operation >> Anti-Theft Indicator

Anti-Theft Indicator

WARNING: This page is about a different car, the 2009 Ford Mustang. 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 PCM again.
NOTE: A minimum of 2 PATS keys must be programmed into the PCM before the vehicle will start.
NOTE: Make sure any aftermarket remote start systems have been removed from the vehicle before any PATS-related no-start concerns are investigated. If the remote start system is a Power Code® system, make certain it is not the cause of the no-start. Removal of the system may be necessary.
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 instrument cluster (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.