Question about 1999 Mercury Cougar
When the anti-theft light is flashing rapidly then either it is not seeing the key,or the transciever module is not communicating with the PCM. It could be the transciever or it could be the PCM is not powering up for some reason. I would first try replacing the PCM relay in the underhood fuse panel.
Posted on Jun 25, 2009
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Posted on Jan 02, 2017
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When the ignition is turned to RUN or START, the
theft indicator will light for 3 seconds and then go
out. If the theft indicator stays on for an extended
period of time or flashes rapidly, have the system
serviced by your dealership or a qualified technician.
You can view additonal information at this Free Ford website, by viewing the owners manual.
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