2010 Subaru Forester X, AutomaticFACTORY OEM SERVICE PROCEDURE

Fuel Level Sensor: Inspection

  1. Check that the fuel level sensor has no damage.
  2. Measure the fuel level sensor float position.
    NOTE: When inspecting the fuel level sensor, perform the work with the sensor installed to the fuel pump.
    • Model with fuel level sensor bent in 3 locations
      Fig 1: Distance Between Fuel Tank Seating Surface To Full And Empty Level Of Fuel
      G07664857Courtesy of SUBARU OF AMERICA, INC.
      FLOATING POSITION REFERENCE CHART

      Float position Standard
      FULL to Fuel tank seating surface (A) 126.4Β±4 mm (4.976Β±0.157 in)
      EMPTY to Fuel tank seating surface (B) 11.0Β±4 mm (0.433Β±0.157 in)
    • Model with fuel level sensor bent in 2 locations
      Fig 2: Distance Between Fuel Tank Seating Surface To Full And Empty Level Of Fuel
      G00682524Courtesy of SUBARU OF AMERICA, INC.
      (1) FULL
      (2) EMPTY
      (3) Fuel Tank Seating Surface
      FLOATING POSITION REFERENCE CHART

      Float position Standard
      FULL to Fuel tank seating surface (A) 120.9Β±4 mm (4.976Β±0.157 in)
      EMPTY to Fuel tank seating surface (B) 14.8Β±4 mm (0.583Β±0.157 in)
  3. Measure the resistance between fuel level sensor terminals.
    • Model with fuel level sensor bent in 3 locations
      Fig 3: Measuring Resistance Between Fuel Level Sensor Terminals
      G07664858Courtesy of SUBARU OF AMERICA, INC.
    • Model with fuel level sensor bent in 2 locations
      Fig 4: Measuring Resistance Between Fuel Level Sensor Terminals
      G00682528Courtesy of SUBARU OF AMERICA, INC.
      TERMINAL RESISTANCE REFERENCE CHART

      Float position Terminal No. Standard
      FULL (A) 1 and 4 8.7 Β± 1.0 Ξ©
      EMPTY (B) 139.1 Β± 2.0 Ξ©
Factory Service Tools

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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.

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