Is the vehicle currently showing a high-temperature warning, steam, or coolant loss?
An active overheating event can require stopping rather than continuing a diagnostic drive.
CARFACTBOOK / DIAGNOSTIC REFERENCE
Start with the symptom. Follow the evidence.
Choose a symptom and your exact chassis when possible. Each next check follows the result you record—not a guessed failed part. CarFactBook keeps a traceable path and prepares a practical mechanic handoff.
Symptom first
What are you seeing?
Electrical
Won't start / hard starting
Check reviewed reports for Nissan Note e-POWER HE12.
ElectricalWarning light or message
Check reviewed reports for Nissan Note e-POWER HE12.
CoolingOverheating / running hot
Check reviewed reports for Nissan Note e-POWER HE12.
A/C / climateA/C not cold
Check reviewed reports for Nissan Note e-POWER HE12.
Suspension / steeringVibration / shaking
Check reviewed reports for Nissan Note e-POWER HE12.
BrakesBrake problem
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Hybrid / EV systemHybrid-system problem
Check reviewed reports for Nissan Note e-POWER HE12.
Fuel / emissionsPoor fuel economy
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Choose an exact vehicle
Selected: Nissan Note e-POWER HE12 · 2016–2020
Diagnostics v3 · Structured symptom flow
0 results recordedOverheating / running hot — structured test-result path
Safety boundary. If the temperature warning is severe, steam is visible, or coolant is escaping, stop driving and follow the vehicle manufacturer's safety guidance. Do not open a hot pressurized cooling system.
Mechanic handoff summary
Further evidence required. 0 reachable results recorded.
Results stay on this page until you leave or change vehicle/symptom. Optional saving stores only this v3 session on this browser, separate from Garage and Vehicle Passport. It is not uploaded or shared. References are refreshed from CarFactBook when you return.
Preparing Diagnostics v3 handoff…
After a mechanic checks or repairs the car
Close the loop with the actual diagnosis, repair, part, cost and follow-up. The exact vehicle, symptom area and the test-result path above are prefilled, but you can edit them before submitting.
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
Engine coolant capacity →
Approx. 6.96 L on 2016–mid-2018 HE12; 6.78 L from Jul 2018 change (including reservoir)Production period matters; verify the vehicle date before servicing.
Nissan Motor Co., Ltd. · Verified 2026-10-02
Inverter coolant capacity →
Approx. 4.24 L on 2016–mid-2018 HE12; 4.16 L from Jul 2018 change (including reservoir)Production period matters; verify the vehicle date before servicing.
Nissan Motor Co., Ltd. · Verified 2026-10-02
Maintenance
Documented service references; your service history determines what is due.
Inverter coolant service reference
Condition basedService the e-POWER inverter cooling circuit using the production-period-specific quantity and approved coolant/procedure.
Nissan states replacement timing should be checked in the maintenance note; no interval is inferred here.
Nissan Japan Note E12/HE12 fluid and coolant FAQ ↗ · Verified 2026-10-02
Engine coolant service reference
Condition basedUse the HE12 production-period-specific engine coolant quantity and manufacturer-specified coolant/service procedure.
Nissan states replacement timing should be checked in the maintenance note; no interval is inferred here.
Nissan Japan Note E12/HE12 fluid and coolant FAQ ↗ · Verified 2026-10-02
Parts / fitment
Reference specifications, not a shopping list or proof that these parts need replacement. Fitment conditions still apply.
Engine coolant
Approx. 6.96 L pre-Jul-2018 / 6.78 L from Jul 2018, including reservoirHE12 production period changes the reference quantity; verify build period.
Nissan Motor Co., Ltd. source ↗ · Verified 2026-10-02
Inverter coolant
Approx. 4.24 L pre-Jul-2018 / 4.16 L from Jul 2018, including reservoirThis is the e-POWER inverter cooling circuit; verify build period and service procedure.
Nissan Motor Co., Ltd. source ↗ · Verified 2026-10-02
Reviewed repair evidence
0 related reportsOverheating / running hot
Reports are matched by related system category for Nissan Note e-POWER HE12. Compare the recorded symptom and outcome; a repair on another car does not diagnose yours.
No reviewed match yet. CarFactBook will not manufacture a likely cause just to fill this screen. Check the exact vehicle facts or contribute a real repair outcome through Problems.