Hydrogen Fuel Cell System - Toyota Mirai 2020 Quick Reference Manual

HYDROGEN FUEL CELL
SYSTEM & SAFETY FEATURES

Hydrogen Fuel Cell System

Fuel cell vehicles efficiently use electricity, which is generated by a chemical
reaction between hydrogen and oxygen in a fuel cell stack. Excess electricity is
stored in a traction battery that is used to power high voltage systems and assist on
initial acceleration.
The fuel is H (compressed hydrogen gas), so the exhaust, when running, is
2
only water and water vapor. As they do not emit CO
(Nitrogen Oxides) at the tailpipe, fuel cell vehicles are considered zero emission
vehicles.
NOTE: Fuel consumption and energy information of the Hydrogen Fuel Cell
System are shown on the Multi-Information Display.
TIPS FOR IMPROVED FUEL ECONOMY
- Ensure tire pressures are maintained at levels specified in the Owner's Manual.
- Drive vehicle smoothly. Avoid abrupt acceleration and deceleration.
- Avoid driving at speeds that are higher than necessary, especially on the
highway.
- When possible, avoid sudden stops to maximize regenerative braking energy.
- Minimize use of the air conditioning.
Fill with fuel at hydrogen stations compliant with SAE J2601.
If you have questions about hydrogen station compliance, consult your Authorized
Mirai Fuel Cell Toyota Dealer.
Observe the notices and cautions shown at the hydrogen station.
The filling time and amount may differ depending on the equipment of the hydrogen
station. It may make the possible driving distance shorter.
BEFORE FUELING
When you arrive at the station, prepare for fueling:
1) Ensure the vehicle is OFF and in Park with parking brake set.
2) Press the fuel door release button and refer to instructions in 'Fuel door release
button & cap section' to prepare the vehicle to accept hydrogen fuel.
Note: Fuel door will not open if the READY indicator is on. The fuel door will
automatically re-lock if you don't open within 30 seconds.
3) Now you are ready to refuel. Outside the vehicle at the pump, use the station's
best practice guidelines and instructions on how to refuel using their nozzle.
For assistance, call Customer Support toll free at 1-800-331-4331 (option 8.)
(Carbon Dioxide) and NOx
2
9