Toyota Mirai (EU)

Additional Notes

• The Toyota Mirai (EU) uses two separate coolant circuits: one for the fuel cell stack and one for the inverter. Each circuit carries its own capacity and service interval specifications.
• On the JDP10 generation, the fuel cell stack cooling system holds 19.6 liters, which is a notably large capacity reflecting the thermal management demands of the hydrogen fuel cell stack itself.
• The inverter cooling system on the JDP10 holds 4.7 liters, a considerably smaller volume than the fuel cell stack circuit, consistent with the more compact thermal load of power electronics.
• For the JDP10 inverter cooling system under normal use conditions, a coolant change interval of 90,000 km applies, with checks scheduled every 30,000 km.
• Under a first change only condition, the JDP10 inverter cooling system carries an extended change interval of 240,000 km, while the check interval remains at 30,000 km. The 4.7-liter capacity figure applies equally to both use conditions.
• The JPD20 generation fuel cell stack cooling system holds 16.4 liters, which is 3.2 liters less than the JDP10 figure, indicating a reduction in coolant volume between the two generations for that circuit.
• The JPD20 inverter cooling system capacity is listed as 3.9-4 liters, a range rather than a fixed value, which may reflect minor variation across production units or measurement methods.
• Both the JDP10 and JPD20 fuel cell stack cooling systems share the same check interval of every 24 months or 30,000 km, whichever comes first, under normal use conditions. No change interval is listed for either fuel cell stack circuit.
• The JPD20 inverter cooling system mirrors the JDP10 in its service structure: a 90,000 km change interval under normal use and a 240,000 km change interval under the first change only condition, both with 30,000 km check intervals.