your float is stuck or you have a short in the hot wire!
On a 2000 Mercury Cougar : The warning light that looks like a can with an X through it , located between the engine coolant temperature gauge and the tachometer ( at the bottom of the gauge cluster ) is your ( LOW engine cooling system warning light )
You have to pull the gauge assy out and the lights are mounted from the rear. Run1
I was looking at the 1999 Mercury Cougar Owner Guide and it does not show that it has a gas cap warning light
On a 2000 Mercury Cougar : That's your Anti-theft system status light
it is in the manual says when this happens it is 02 sensor and if it is flashing you have a miss in your engine which can cause damage.
On a 2000 Mercury Cougar : The OIL PRESSURE warning light is located on the right side of your gauge cluster just above the red " BRAKE " warning light It looks like an oil can Just before you start the car , when the ignition key is turned to the RUN position , the light should light up for a few seconds to prove that the bulb works
You need an oil change.
You are low on coolant.
it is located on the light a switch that says 12sec on and off
Blown fuse
its below freezing temperature
I have a instrument light that is on ---- 1999 Cougar , it looks light a transmission, but I think it is the emission indicator on the far left of the steering wheel, what does this mean?