That will turn off ( or turn back on ) the overdrive feature of your transmission
When the overdrive is off , so the transmission only uses the first ( 3 ) gears
the O/D OFF light will light up in your tachometer . Overdrive is the normally
allowed position so if you shut the vehicle off , the next time it is started the
overdrive feature is allowed or if you have shut the overdrive feature off just
push the button again to turn the overdrive back on
how do you remove the headliner from a 1999 mercury cougar
if i don't have the key to open the trunk or the push button does not work from the inside of the car to open the trunk of a 1999 mercury cougar, could i be able to bypass the button or switch to open it?
No.
Yes , the 1999 Mercury Cougar is FRONT wheel drive
It's a bit buried. Note that the 1999 Mercury Cougar has no user-servicable barts.
relay R1 is for the fuel pump on a 1999 Mercury Cougar
According to the 1999 Mercury Cougar Owner Guide : ( 58.5 litres / 15.4 U.S. gallons )
The 1999 Mercury Cougar OBD 2 port is under driver side dash left of steering column
According to the 1999 Mercury Cougar Owner Guide the six disc CD changer ( if equipped ) is located in the luggage compartment
I was looking at the 1999 Mercury Cougar Owner Guide and it does not show that it has a gas cap warning light
The engine diagram for a 1999 Mercury Cougar is used in diagnosing and repairing problems. It gives the location of each component and its connection type.
Ebay, http://www.nextag.com/mercury-cougar-headlights/search-html, or just drive to your ford/mercury dealer.