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.
Inspection [11/2015 - 12/2018]: Procedure
2018 Toyota Prius Two EcoSECTION Procedure
- INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY LH
- Check the operation of the lumbar support adjustment assembly LH.
*a Component without harness connected
(Lumbar Support Adjustment Assembly LH)- Check that the front seatback moves smoothly when the auxiliary battery is connected to the lumbar support adjustment assembly LH connector terminals.
OK
Click Location & Routing (d2)
Click Connector (d2)
Tester Connection Operational Direction d2-1 - Auxiliary battery positive (+)
d2-2 - Auxiliary battery negative (-)Seatback moves forward d2-2 - Auxiliary battery positive (+)
d2-1 - Auxiliary battery negative (-)Seatback moves backward If the result is not as specified, replace the lumbar support adjustment assembly LH.
- Check that the front seatback moves smoothly when the auxiliary battery is connected to the lumbar support adjustment assembly LH connector terminals.
- Check the operation of the lumbar support adjustment assembly LH.
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.