what are keyless entry codes to mercury mountaineer 2003
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.
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