2021 TOYOTA MIRAI Warranties & Maintenance Guides (in English)

39
Dealer Service verification:
D
ate: Mileage:
105,000 miles or 126 months
■Check installation of driver’s floor mat
■Inspect and adjust all fluid levels1
■Inspect FC HV battery cooling intake filter2
■Inspect wiper blades
■Rotate tires
■ Visually inspect brake linings/drums and brake pads/discs
Inspect the following:
_ Ball joints and dust covers
_ Brake lines and hoses
_ Drive shaft boots
_ Fuel cell coolant level

Additional Maintenance Items for Special Operating Conditions3
Driving on dirt roads or dusty roads: ■Replace fuel cell air filter
■Tighten nuts and bolts on chassis and body
Extensive idling and/or low speed driving for a long distance such as po\
lice, taxi or
door-to-door delivery use:
■Inspect hydrogen supply system for leaks and damage
■Inspect hydrogen tank (with valve) for leaks and damage
■Inspect hydrogen tank band for damage
Driving while towing, using a car-top carrier, or heavy vehicle loading:4
■Tighten nuts and bolts on chassis and body
Operating on rough or muddy roads, or roads with melted snow: ■Inspect hydrogen supply system for leaks and damage
■Inspect hydrogen tank (with valve) for leaks and damage
■Inspect hydrogen tank band for damage _ Inverter coolant level
_ Steering gear
_ Steering linkage and boots
1 Inspect sealed transmissions, transfer cases and differentials for signs of leakage. If any leakage from a sealed

component is suspected, it is recommended that you have the sealed component inspected by a Toyota dealer. Inspect
power steering fluid (if equipped) and brake fluid level/condition. Inspect engine and inverter (if equipped) coolant
level/condition/freezing point. Your dealer may recommend services (Dealer-Recommended Maintenance) based on
inspection results.
2 Visually check the FC HV battery cooling intake filter for dirt or dust every 5,000 miles and clean if necessary. Clean every
20,000 miles.
3 Perform these service items only if you drive primarily under the conditions indicated.4 N ot all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.
Maintenance Log
MAINTENANCE LOG
MAINTENANCE

40
Dealer Service verification:
D
ate: Mileage:
Dealer Service verification:
D
ate: Mileage:
110,000 miles or 132 months
■Check installation of driver’s floor mat
■Inspect and adjust all fluid levels1
■Inspect FC HV battery cooling intake filter2
■Inspect wiper blades
■Replace cabin air filter
■Rotate tires
■ Visually inspect brake linings/drums
and brake pads/discs
Inspect the following: ■Fuel cell air filter
■ Fuel cell cooling system for leaks
■Hydrogen sensor
■ Hydrogen supply system for leaks
and damage
■ Hydrogen tank (with valve) for leaks
and damage
■ Hydrogen tank band for looseness
and damage

■Additional MainteAdditional Maintenance Items for
Special Operating Conditions3
Driving on dirt roads or dusty roads: ■Inspect ball joints and dust covers
■Inspect drive shaft boots
■Inspect steering linkage and boots
■ Tighten nuts and bolts on chassis
and body
Driving while towing, using a car-top
carrier, or heavy vehicle loading:
4
■ Tighten nuts and bolts on chassis
and body
115,000 miles or 138 months
■Check installation of driver’s floor mat
■Inspect and adjust all fluid levels1
■Inspect FC HV battery cooling intake filter2
■Inspect wiper blades
■Rotate tires
■ Visually inspect brake linings/drums
and brake pads/discs
Additional Maintenance Items for
Special Operating Conditions3
Driving on dirt roads or dusty roads: ■Inspect ball joints and dust covers
■Inspect drive shaft boots
■Inspect fuel cell air filter
■Inspect steering linkage and boots
■ Tighten nuts and bolts on chassis
and body
Extensive idling and/or low speed driving
for a long distance such as police, taxi
or door-to-door delivery use:
■ Inspect hydrogen supply system for
leaks and damage
■ Inspect hydrogen tank (with valve)
for leaks and damage
■Inspect hydrogen tank band for damage
Driving while towing, using a car-top
carrier, or heavy vehicle loading:
4
■ Tighten nuts and bolts on chassis
and body
Operating on rough or muddy roads, or
roads with melted snow:
■ Inspect hydrogen supply system for
leaks and damage
■ Inspect hydrogen tank (with valve) for
leaks and damage
■Inspect hydrogen tank band for damage



Maintenance Log
MAINTENANCE LOG
MAINTENANCE

41
Dealer Service verification:
D
ate: Mileage:
120,000 miles or 144 months
■Check installation of driver’s floor mat
■Clean FC HV battery cooling intake filter2
■Inspect and adjust all fluid levels1
■Inspect wiper blades
■Replace breather pipe tip part (Gore film)
■Replace cabin air filter
■Replace fuel cell air filter
■Replace ion exchanger element
■Rotate tires
Inspect the following:
_ B

all joints and dust covers
_ B

rake lines and hoses
_ B

rake linings/drums and
brake pads/discs
5
_ Dr ive shaft boots
_F

uel cell coolant level
_ F

uel cell cooling system for leaks
_ H

ybrid transaxle for signs of leakage
_H

ydrogen sensor
Additional Maintenance Items for Special Operating Conditions3
Driving on dirt roads or dusty roads: ■Tighten nuts and bolts on chassis and body
Driving while towing, using a car-top carrier, or heavy vehicle loading:4
■Replace hybrid transaxle fluid
■Tighten nuts and bolts on chassis and body
1 Inspect sealed transmissions, transfer cases and differentials for signs of leakage. If any leakage from a sealed
component is suspected, it is recommended that you have the sealed component inspected by a Toyota dealer. Inspect
power steering fluid (if equipped) and brake fluid level/condition. Inspect engine and inverter (if equipped) coolant
level/condition/freezing point. Your dealer may recommend services (Dealer-Recommended Maintenance) based on
inspection results.
2 Visually check the FC HV battery cooling intake filter for dirt or dust every 5,000 miles and clean if necessary. Clean every
20,000 miles.
3 Perform these service items only if you drive primarily under the conditions indicated.4 N ot all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.5 Inspect thickness measurement and disc runout.6 Replace tank (with valve) every 15 years or 180 months whichever comes first.7 Replace inverter coolant at 150,000 miles and every 50,000 miles thereafter.
_
H ydrogen supply system for leaks
and damag
e
_ H ydrogen tank (with valve) for leaks
and damage6
_ H ydrogen tank band for looseness
and damage
_ I

nverter coolant level
7
_ S teering gear
_S

teering linkage and boots
Maintenance Log
MAINTENANCE LOG
MAINTENANCE

42
EXPLANATION OF MAINTENANCE ITEMS
T
he following descriptions are
provided to give you a better
u
nderstanding of the maintenance
items that should be performed on your
v
ehicle. The scheduled maintenance log
indicates at which mileage/time intervals
each item should be performed. Please
note that many maintenance items should
be performed only by a qualified technician.
For further information on maintenance
items you can perform yourself, see the
“Maintenance and Care” section of the
Owner’s Manual.
Ball Joints and Dust Covers
Check the suspension and steering
linkage ball joints for looseness and
damage. Check all dust covers for
deterioration and damage. Replace
any deteriorated or damaged parts.
A qualified technician should perform
these operations.
Brake Lines and Hoses
Visually inspect for proper installation.
Check for chafing, cracks, deterioration
and signs of leakage. Replace any
deteriorated or damaged parts. A qualified
technician should perform these operations.
Brake Linings/Drums and
Brake Pads/Discs
Check the brake linings (shoes) and
drums for scoring, burning, fluid leakage,
broken parts and excessive wear. Check
the pads for excessive wear and the discs
for runout, excessive wear and fluid
leakage. Replace any deteriorated or
damaged parts. A qualified technician
should perform these operations.
Breather Pipe Tip Part (Gore film)
Replace at specified intervals. A qualified
technician should perform this operation.
Cabin Air Filter
Replace at specified intervals. Driving in
heavy traffic, on dirt roads or in urban,
desert or dusty areas may shorten filter’s
life. More frequent replacement may
be necessary.
Drive Shaft Boots
Check the drive shaft boots and clamps for
cracks, deterioration and damage. Replace
any deteriorated or damaged parts and, if
necessary, repack the grease. A qualified
technician should perform these operations.
Driver’s Floor Mat
• Only use the driver’s floor mat
designed specifically for the model
and model year of your vehicle.
• Always properly secure the driver’s
floor mat using the retaining hooks.
• Never install another floor mat on top
of the existing driver’s floor mat.
• Never install the driver’s floor mat
upside down.
Maintenance Log
MAINTENANCE

43
Fuel Cell Air Filter
Inspect or replace at specified intervals.
When performing inspections, check for
dama
ge, excessive wear and oiliness,
and replace if necessary.
Fuel Cell Coolant
Inspect at specified intervals. When performing
inspections, check that the coolant level is
between the “FULL” and “LOW” lines on the
see-through reservoir tank.
Notice: A qualified technician should perform
this operation.
Use the following product:
“Toyota Genuine FC Stack Coolant.”
• In order to safely cool the fuel cell
stack, which is at high voltages, the
fuel cell stack coolant is an exclusive
high insulation product.
• Never use water or other kinds of coolant s
as they will cause damage.
• Coolant changes are unnecessary .
• Do not reuse coolant that has been removed
from the radiator.
• Coolant is colorless.
• Consult your Toyota dealer about
replenishing the fuel cell stack coolant.
Fuel Cell HV Battery
Cooling Intake Filter
Inspect and clean at specified intervals.
Refer to “Cleaning the traction battery air
intake vents and filters”
in the “Maintenance
and Care” section of the Owner’s Manual
for cleaning procedures.
Hybrid Transaxle Fluid
Inspect level and replace at specified intervals.
When performing inspections, check each
component for signs of leakage. If you
discover any leakage, have it repaired by a
qualified technician immediately.
Hydrogen Sensors
Inspect both hydrogen sensors at specified
intervals. This inspection should be performed
using calibration gas at a concentration of
1.3% hydrogen.
Notice: A qualified technician should perform
this operation.
Hydrogen Tank (with Valve)
NOTE: Replace every 15 years or
180 months, whichever comes first.
Notice: A qualified technician should
perform this opera
tion.

EXPLANATION OF MAINTENANCE ITEMS
Maintenance Log
MAINTENANCE

44
EXPLANATION OF MAINTENANCE ITEMS
Inverter Coolant
Drain the cooling system and refill with an
ethylene-glycol type coolant. Inspect hoses
and connections for corrosion and leaks.
Tighten connections and replace parts
when necessary.
Inspect at specified inter

vals. When performing
inspections, check that the coolant level is
between the “FULL” and “LOW” lines on the
see-through reservoir tank.
Notice: A qualified technician should perform
this operation.
Use the following product:
“Genuine Toyota Super Long-Life Coolant.”
NOTE: Replace inverter coolant at 150,000
miles and every 50,000 miles thereafter.
Ion Exchanger Element
It is necessary to replace the element within
the Ion Exchanger assembly periodically in
order to prevent degradation of the electrical
generating efficiency of the FC stack.
Notice: A qualified technician should perform
this operation.
Nuts and Bolts on Chassis
and Body
Retighten the seat-mounting bolts and
front/rear suspension member retaining
bolts to specified torque.
Radiator, Condenser, Hoses
and/or Intercooler
Inspect for damage, debris, corrosion,
kinks, cracks, rot, clogging and leaks.
Have any problem repaired immediately
by a qualified technician.
Steering Gear
Inspect for signs of leakage. If you
discover any leakage, have it repaired
immedia
tely by a qualified technician.
Steering Linkage and Boots
With the vehicle stopped, check for
excessive freeplay in the steering wheel.
Inspect
the linkage for bending and
damage and the dust boots for
deterioration, cracks and damage.
Replace any damaged parts. A qualified
technician should
perform these operations.
Tire Rotation
Tires should be rotated according to the
instructions in the Owner’s Manual. When
rotating tires, check for damage and
uneven wear.
Replace if necessary.
Wiper Blades
The wiper blades should not show
any signs of cracking, splitting, wear ,
contamina
tion or deformation. The
wiper blades should clear the windshield
without streaking or skipping.
Maintenance Log
MAINTENANCE

45
VEHICLE IDENTIFICATION
Model
In-service date
Selling dealership
Key number
Body style
Mileage at delivery
Selling dealership phone number
Vehicle Identification Number
Maintenance Log
MAINTENANCE

46
NOTES
Maintenance Log
MAINTENANCE