System Check

1998 Mercury Mountaineer 5.0 P, AWDSECTION System Check
WARNING: This page is about a different car, the 1997 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

Observe THEFT indicator light on instrument cluster and turn ignition on. If THEFT indicator light stays on or is flashing, retrieve DTCs and perform appropriate DTC test. See RETRIEVING CODESΒ  . If THEFT indicator light does not turn on, retrieve DTCs and perform appropriate DTC test. See RETRIEVING CODESΒ  . If no DTCs are present, go to NO THEFT INDICATOR PROVEOUTΒ  test. For more information on THEFT indicator light operation, see OPERATIONΒ  .

RENDER: 1.0x

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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.