Symptom Chart

2009 Mercury Milan Premier, 3.0 1, AWDSECTION Symptom Chart
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
Symptom Chart

Condition Possible Sources Action
  • The power seat is inoperative - seats without heat
  • Smart junction box (SJB) fuse 9 (30A)
  • Circuitry
  • Seat control switch
  • The power seat is inoperative - seats with heat
  • Smart junction box (SJB) fuse 9 (30A)
  • Circuitry
  • Seat control switch
  • The power seat moves but is noisy
  • Obstruction or foreign material
  • Seat track
  • The power seat moves but is loose
  • Fastening hardware
  • Seat track
  • The power seat does not make full travel
  • Seat track obstructed
  • Seat track
  • The power seat does not move horizontally/vertically - seats without heat
  • Circuitry
  • Seat control switch
  • Seat track
  • The power seat does not move horizontally/vertically - seats with heat
  • Circuitry
  • Seat control switch
  • Seat track
  • The heated seat is inoperative
  • Fuse
  • Circuitry
  • Heated seat relay
  • Heated seat switch
  • The heated seat does not operate correctly - seat does not heat but the heated seat indicator illuminates when pressed
  • Circuitry
  • Heated seat switch
  • Cushion heated seat element and bi-metallic thermostat
  • Backrest heated seat element
  • The heated seat does not operate correctly - seat does heat but the heated seat indicator does not illuminate when pressed
  • Circuitry
  • Heated seat switch
  • CHECK circuit 57 (BK) for an open. If no problem is found, INSTALL a new heated seat switch.
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.