Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2010MOUNTAINEER 2WD V8-4.6LREPAIR AND DIAGNOSISBODY AND FRAMELOCKSKEYLESS ENTRYKEYLESS ENTRY KEY-PADTESTING AND INSPECTION
2010 Mercury Mountaineer 2WD V8-4.6L
Keyless Entry Key-Pad: Testing and Inspection
2010 Mercury Mountaineer 2WD V8-4.6LSECTION Testing and Inspection
Keyless Entry Keypad Code Programming
NOTE: A maximum of 3 personal entry codes can be programmed into the vehicle. The personal entry codes can be associated with up to two memory seat/adjustable pedal settings.
1. Enter the permanent factory keyless entry keypad code.
2. Press the 1/2 button within 5 seconds to activate the programming mode. Holding the 1/2 button for more than 2 seconds after activation erases all the stored customer codes. The existing codes do not need to be erased to program a new code.
3. Within 5 seconds, enter the new 5-digit keyless entry keypad code.
4. Press the 1/2, 3/4, or 5/6 to indicate which of the 3 personal entry code positions is to be programmed.
5. The door locks lock and unlock to confirm the new code is programmed.
6. To program an additional personal entry code, repeat Steps 2 through 4.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.