Does the cabin blower move air at the selected fan speeds?
No airflow and warm airflow are different symptoms and should not be diagnosed as the same fault.
CARFACTBOOK / DIAGNOSTIC REFERENCE
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What are you seeing?
Electrical
Won't start / hard starting
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ElectricalWarning light or message
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CoolingOverheating / running hot
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A/C / climateA/C not cold
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Suspension / steeringVibration / shaking
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BrakesBrake problem
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Hybrid / EV systemHybrid-system problem
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Fuel / emissionsPoor fuel economy
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Choose an exact vehicle
Selected: Toyota Sienta NHP170G · 2015–2022
Diagnostics v3 · Structured symptom flow
0 results recordedA/C not cold — structured test-result path
Mechanic handoff summary
Further evidence required. 0 reachable results recorded.
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Preparing Diagnostics v3 handoff…
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Choose an exact vehicle above to prepare a repair-outcome report.Reports remain pending until CarFactBook reviews them. A diagnostic path or external test result never becomes a confirmed diagnosis automatically.Useful references for your exact car
These references relate to the selected symptom. They do not identify a faulty component or recommend replacing it. Confirm equipment, production period and source caveats for your individual car.
Verified facts
Cabin filter service interval →
Replace every 20,000 km; 10,000 km in high-traffic/dusty/cold-region severe useGeneration-specific NHP170G interval.
Toyota Motor Corporation · Verified 2026-10-06
Step-by-step guides
Toyota Sienta NHP170G Hybrid: Replace the Cabin Air Filter →
Follow the April 2020 Toyota Sienta Hybrid glove-box, lower-coupling and filter-cover sequence without breaking the fittings; confirm the correct 20,000/10,000 km service interval.
Easy · 10–20 minutes
Never force the lower glove-box couplings or plastic filter-cover tabs; Toyota specifically warns these can break. Do not run HVAC without its cabin filter, and do not wash or blow-clean the replacement-type filter. The 2020 NHP170G manual is not interchangeable with the later 2022+ Sienta.
Reviewed repair evidence
0 related reportsA/C not cold
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