Are you asking what they are... meaning what are they for? There is a numeric keypad on the door to unlock your car with your code. If you are asking what the actual code is, from the factory each is unique. A personal code can be set by owner, but the factory default will always still work, even if changed by owner. The default code is stored in the ECU and can be fetched by a dealer.
2003 Mercury Mountaineer Convenience AWD
-
General
I own a 1997 Mercury Mountaineer. I absolutely love my "Betsy" (which is what I named her when I first got her). Betsy now has 425,000 original miles on her and still going strong. Still able to ge...
1997 Mercury Mountaineer RWD
-
General
Will a 2006 mercury mountaineer tailight assembly fit on a 2004 mercury mountaineer
2004 Mercury Mountaineer Premier AWD
-
General
i will like to know all that i need to know about the wheel pattern so that i know what size rims and tires to get
2003 Mercury Mountaineer Convenience AWD
-
General
I changed out my intake manifold on my Mountaineer. I was proud that I had no extra pieces. However, when I went to start her up she went straight into Engine Failsafe Mode. Upon further investigation...
2004 Mercury Mountaineer Premier AWD
-
General
Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.