How to Replace a Window Regulator in a 2003 Ford Focus

Written by allen moore
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The side windows in a 2003 Ford Focus rely on a window regulator and motor assembly to move them up or down in response to the window switch's commands. The regulator itself is the mechanical device that holds the window glass and physically moves it, while the motor simply transforms the electrical energy from the switch to mechanical energy it uses to turn the gear on the regulator. If the regulator should fail, odds are the window will fall down into the door. Anyone with basic automotive-repair experience can successfully perform this job.

Skill level:
Moderately Challenging

Things you need

  • Trim tool
  • Socket set
  • Packing tape

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  1. 1

    Remove the window switch from the door panel with the trim tool. Unplug the switch from the wiring harness by hand.

  2. 2

    Remove the hex-head screws from the door panel with your socket set. Place all the screws together within easy reach for reinstallation.

  3. 3

    Lift the door panel off the Focus by grabbing the leading and trailing edges and pulling upward. Set the panel out of the way.

  4. 4

    Push the window glass up to the top of the window channel. Tape the glass to the top of the window frame with packing tape.

  5. 5

    Unplug the body harness from the base of the window motor. Unbolt the window regulator from the door and window glass with the socket set. Unbolt the motor from the door support with the socket set.

  6. 6

    Pull the old regulator and motor assembly out of the door by hand. Slide the new assembly into the door in reverse of how you removed the old one.

  7. 7

    Bolt the new regulator to the door and window glass. Bolt the new motor to the door support. Plug the body harness into the base of the new motor by hand.

  8. 8

    Re-install the Focus's door panel in reverse of how you removed it. Remove the packing tape before operating the window.

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