Principles of Operation

2010 Mercury Mariner Hybrid, AWDSECTION Principles of Operation
WARNING: This page is about a different car, the 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

Regardless of the key position, the power door lock control switches are powered at all times. The power door lock switches supply voltage to either the lock or unlock circuit based upon the switch position. The door lock actuators then actuate to a lock or unlock position determined by the voltage on the lock or unlock circuit.

RENDER: 1.0x

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Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.