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370
7-3. Do-it-yourself maintenance
MIRAI_OM_USA_OM62054U(18MY)_O
M62048U(19MY)
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.
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.
For the U.S.A.: “Toyota Super Long Life Coolant” is a mixture of 50% coolant and
50% deionized water. (Minimum temperature: -31
F [-35
C])
For Canada: “Toyota Super Long Life Coolant” is a mixture of 55% coolant and
45% deionized water. (Minimum temperature: -44
F [-42
C])
For more details about inverter coolant, contact your Toyota dealer.
Fuel cell stack coolant
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
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