Inverter Coolant; Inverter Coolant Selection - Toyota Mirai 2017 Owner's Manual

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7-3. Do-it-yourself maintenance
Fuel cell stack coolant
The coolant level is satisfactory if it is between the "FULL" and "LOW"
lines on the reservoir when the fuel cell system is cold.
"FULL" line
"LOW" line
If the level is on or below the
"LOW" line, contact your Toyota
dealer.
NOTICE
Fuel cell stack coolant
■
An exclusive coolant for the fuel cell system is filled in the fuel cell stack
coolant reservoir. Do not use any substitute. It may damage your vehicle.

Inverter coolant

The coolant level is satisfactory if it is between the "FULL" and "LOW"
lines on the reservoir when the fuel cell system is cold.
Inverter coolant reservoir cap
"FULL" line
"LOW" line
If the level is on or below the
"LOW" line, add coolant up to the
"FULL" line.

Inverter coolant selection

■
Only use "Toyota Super Long Life Coolant" or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology.
"Toyota Super Long Life Coolant" is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -31°F [-35°C])
For more details about inverter coolant, contact your Toyota dealer.