Check Seat Heater Switch

2014 Subaru Outback 2.5i, Standard TransSECTION Check Seat Heater Switch
  1. CHECK SEAT HEATER SWITCH
    1. Turn the ignition switch to ON.
    2. Measure the voltage between the seat heater switch and chassis ground when turning the switch to a position other than OFF.

    Connector & terminal 

    LHD side seat 

    (R42) No. 4 (+) - Chassis ground (-): 

    RHD side seat 

    (R45) No. 4 (+) - Chassis ground (-): 

    Does the voltage fluctuate between 12 V ↔ 0 V?

    • Yes  → Harness faulty, open circuit of heater or thermostat faulty.
    • No  → Replace the seat heater 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.