One-Touch Down Feature Inoperative

1997 Mercury Mystique GS, 2.5 L, StandardSECTION One-Touch Down Feature Inoperative
  1. Check Power Supply To One-Touch Module  - Gain access to one-touch module. Leave wire harness connected. Turn ignition on. Using voltmeter, measure voltage between Black wire and Purple/Orange wire of one-touch module connector. If reading is not battery voltage, go to next step. If reading is battery voltage, go to step 3).
  2. Check One-Touch Module Ground  - Turn ignition off. Using ohmmeter, measure resistance between Black wire of one-touch module connector and known-good ground. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open Black wire.
  3. Check One-Touch Module Switch Signal  - Using master window switch, actuate driver's side window in DOWN position. If window does not move, see SINGLE POWER WINDOW INOPERATIVE test. If window moves down, replace one-touch module.
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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.