Toyota Mirai, JPD10 (USA / CAN)

Coolant capacity & service interval

Toyota Mirai, JPD10 (USA / CAN) uses coolant with a capacity range of 4,7 to 19,6 liters. Service intervals consist of checks every 15000 miles or 18 months. The data covers 2 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • Mirai (2016-2020)
  • Fuel cell stack
  • Use: Normal
  • Capacity 19,6 liter
  • Check 15000 miles/ 18 months
  • Mirai (2016-2020)
  • Inverter
  • Use: Normal
  • Capacity 4,7 liter
  • Check 15000 miles/ 18 months

Additional Notes

  • The Toyota Mirai JPD10 runs two separate coolant circuits, each with its own capacity specification: the fuel cell stack cooling system holds 19.6 liters, while the inverter cooling system holds 4.7 liters.
  • The fuel cell stack cooling system capacity of 19.6 liters is notably large, reflecting the thermal demands of a hydrogen fuel cell stack, which generates significant heat during the electrochemical reaction that produces electricity.
  • At 4.7 liters, the inverter cooling circuit is considerably smaller than the fuel cell stack circuit, consistent with the more contained heat output of power electronics compared to the fuel cell stack itself.
  • Both cooling systems share the same service check interval of every 15,000 miles or 18 months under normal use conditions, whichever comes first.
  • The dual-interval structure of 15,000 miles or 18 months means the time-based threshold of 18 months can trigger a service check even when mileage accumulation is low, which is relevant for a vehicle that may see limited daily driving.