Symptom Chart

2009 Mercury Milan Premier, 3.0 1, AWDSECTION Symptom Chart
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.
SYMPTOM CHART

Condition Possible Sources Action
  • No communication with the instrument cluster
  • Fuse(s)
  • Circuitry
  • Instrument cluster
  • Incorrect fuel gauge indication - single fuel tank
  • Circuitry
  • Fuel pump module
  • Fuel level sensor
  • Fuel tank
  • Instrument cluster
  • Incorrect fuel gauge indication - dual fuel tanks
  • Circuitry
  • Fuel level sender
  • Fuel tank
  • Instrument cluster
  • Incorrect voltage gauge indication
  • Circuitry
  • Instrument cluster
  • Incorrect oil pressure gauge indication
  • Circuitry
  • Oil pressure switch
  • Instrument cluster
  • Incorrect temperature gauge indication
  • Instrument cluster
  • Powertrain control module (PCM)
  • Incorrect transmission temperature gauge indication
  • Transmission temperature sensor
  • Powertrain control module (PCM)
  • Instrument cluster
  • Incorrect speedometer indication
  • Anti-lock brake system (ABS) concern
  • ABS module
  • Instrument cluster
  • Incorrect tachometer indication
  • PCM
  • Instrument cluster
  • Trip odometer inoperative, speedometer OK
  • Instrument cluster
  • VERIFY the trip odometer reset button is not binding. If OK, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . TEST the system for normal operation.
  • Inaccurate configuration
  • The safety belt warning indicator is inoperative (chime is operative)/does not operate correctly
  • Circuitry
  • Safety belt switch (part of the safety belt buckle)
  • Instrument cluster
  • Inaccurate speedometer reading
  • Anti-lock brake system (ABS) module
  • Instrument cluster
  • The anti-lock brake system (ABS) warning indicator is never/always on
  • ABS module
  • Instrument cluster
  • The brake warning indicator is never on
  • Circuitry
  • Brake warning indicator relay
  • Anti-lock brake system (ABS) module
  • Brake fluid level switch
  • Parking brake switch
  • Instrument cluster
  • The brake warning indicator is always on
  • Circuitry
  • Brake fluid level switch
  • Parking brake switch
  • Anti-lock brake system (ABS) module
  • Instrument cluster
  • The malfunction indicator lamp (MIL) is never on
  • Powertrain control module (PCM)
  • Instrument cluster
  • The malfunction indicator lamp (MIL) is always on
  • Diagnostic trouble code (DTC) related concern(s)
  • The charging system warning indicator is never on
  • Circuitry
  • Charging system
  • Instrument cluster
  • The charging system warning indicator is always on
  • Circuitry
  • Charging system
  • The air bag indicator warning is never/always on
  • Circuitry
  • Restraint control module (RCM)
  • Instrument cluster
  • The high beam indicator is never on
  • Circuitry
  • Instrument cluster
  • The LH turn indicator is never on
  • Circuitry
  • Instrument cluster
  • The RH turn indicator is never on
  • Circuitry
  • Instrument cluster
  • The 4X4 HIGH/LOW RANGE indicator is never/always on
  • Inaccurate instrument cluster configuration
  • Circuitry
  • 4X4 range select switch
  • 4WD control module
  • Instrument cluster
  • The wait to start indicator is never/always on
  • Powertrain control module (PCM)
  • The speed control indicator is never/always on
  • Powertrain control module (PCM)
  • Instrument cluster
  • The instrument cluster is inoperative
  • Fuse(s)
  • Circuitry
  • Instrument cluster
  • The tow haul indicator is inoperative
  • Instrument cluster
  • The electronic throttle control (ETC) indicator is never on
  • Powertrain control module (PCM)
  • Instrument cluster
RENDER: 1.0x

NO RELATED

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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.