Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Subaru Outback BaseFACTORY OEM SERVICE PROCEDURE
Check Seating Sensor Mat
- Disconnect the connector of the seat belt switch and seating sensor mat.
- Measure the resistance between the terminals when the seating sensor mat is in each of the following operation conditions.
- RH
Terminal No. Inspection conditions Standard Circuit 1 - 2 Do not sit on the rear seat RH 1 MΩ or more 1 - 2 Sit on the rear seat RH 1 Ω or less - CTR
Terminal No. Inspection conditions Standard Circuit 1 - 3 Do not sit on the rear seat CTR 1 MΩ or more 1 - 3 Sit on the rear seat CTR 1 Ω or less - LH
Terminal No. Inspection conditions Standard Circuit 2 - 4 Do not sit on the rear seat LH 1 MΩ or more 2 - 4 Sit on the rear seat LH 1 Ω or less - RH
- Replace the rear seating sensor mat together with the seat cushion pad if the inspection result is not within the standard value.
Factory Service Tools
Use the Manual With the Right Hardware
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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.