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HOMESERVICE MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 753 (ANTI-THEFT SYSTEM)DIAGNOSTIC TESTSANTI-THEFTSYMPTOM CHART
2010 Mercury Mariner Hybrid, AWD

Symptom Chart

2010 Mercury Mariner Hybrid, AWDSECTION Symptom Chart
WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Symptom Chart

Condition Possible Sources Action
  • No communication with the powertrain control module (PCM).
  • Fuses
  • Circuitry
  • PCM
  • The anti-theft indicator is always/never on - vehicle starts normally
  • Fuse
  • Circuitry
  • Anti-theft indicator (part of the light sensor)
  • Powertrain control module (PCM)
  • The vehicle does not start
  • Circuitry
  • Starter relay
  • PCM
  • CYCLE the ignition. CARRY OUT the PCM self-test.
  • If PATS DTCs are present, go to the Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index in this article.
  • If no PATS DTCs are present, REFER to the Content Not Found article.
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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.