2017 TOYOTA MIRAI Owners Manual

3377-3. Do-it-yourself maintenance
MIRAI_OM_USA_OM62023U
7
Maintenance and care
■Certification for the tire pressure warning system
FCC ID: PAXPMVC010
NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject
to the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
FCC WARNING:
Changes or modifications not expressl y approved by the party responsi-
ble for compliance could void the user ’s authority to operate the equip-
ment.
WARNING
■When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drivetrain as well as
dangerous handling characteristics, which may lead to an accident
resulting in death or serious injury.
●Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
●Do not use tire sizes other than those recommended by Toyota.
●Do not mix differently constructed tires (radial, bias-belted or bias-ply
tires).
●Do not mix summer, all season and snow tires.
●Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.

3387-3. Do-it-yourself maintenance
MIRAI_OM_USA_OM62023U
NOTICE
■Repairing or replacing tires, wheels, tire pressure warning valves,
transmitters and tire valve caps
●When removing or fitting the wheels, tires or the tire pressure warning
valves and transmitters, contact your Toyota dealer as the tire pres-
sure warning valves and transmitters may be damaged if not handled
correctly.
●Make sure to install the tire valve caps. If the tire valve caps are not
installed, water could enter the tire pressure warning valves and the
tire pressure warning valves could be bound.
●When replacing tire valve caps, do not use tire valve caps other than
those specified. The cap may become stuck.
■To avoid damage to the tire pressure warning valves and transmit-
ters
When a tire is repaired with liquid sealants, the tire pressure warning
valve and transmitter may not operate properly. If a liquid sealant is
used, contact your Toyota dealer or other qualified service shop as soon
as possible. After use of liquid sealant, make sure to replace the tire
pressure warning valve and transmitter when replacing the tire.
( → P. 333)
■Driving on rough roads
Take particular care when driving on roads with loose surfaces or pot-
holes.
These conditions may cause losses in tire inflation pressure, reducing
the cushioning ability of the tires. In addition, driving on rough roads
may cause damage to the tires themselves, as well as the vehicle’s
wheels and body.
■If tire inflation pressure of e ach tire becomes low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

3397-3. Do-it-yourself maintenance
MIRAI_OM_USA_OM62023U
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Maintenance and care
Replacing the tire
●Stop the vehicle on a hard, flat surface.
● Set the parking brake.
● Shift the shift position to P.
● Stop the fuel cell system.
When raising your vehicle with a jack, position the jack cor-
rectly. Improper placement may damage your vehicle or cause
injury.
If necessary tire replacement seems difficult to perform, contact
your Toyota dealer.
Before jacking up the vehicle
Location of the tools and jack
Wheel nut wrench
Towing eyelet Jack handle
Jack

3407-3. Do-it-yourself maintenance
MIRAI_OM_USA_OM62023U
Remove the luggage mat.
Take out the jack.
WARNING
■Using the tire jack
Observe the following precautions.
Improper use of the tire jack may cause the vehicle to suddenly fall off
the jack, leading to death or serious injury.
●Do not use the tire jack for any purpose other than replacing tires or
installing and removing tire chains.
●Only use the tire jack that comes with this vehicle for replacing a tire.
Do not use it on other vehicles, and do not use other tire jacks for
replacing tires on this vehicle.
●Always check that the tire jack is securely set to the jack point.
●Do not put any part of your body under the vehicle while it is supported
by the jack.
●Do not operate the fuel cell system or drive the vehicle while the vehi-
cle is supported by the jack.
●Do not raise the vehicle while someone is inside.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a height greater than that required to
replace the tire.
●Use a jack stand if it is necessary to get under the vehicle.
●When lowering the vehicle, make sure that there is no-one near the
vehicle. If there are people nearby, warn them vocally before lowering.
Taking out the jack
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3417-3. Do-it-yourself maintenance
MIRAI_OM_USA_OM62023U
7
Maintenance and care
Chock* the tires.
*: Chock can be purchased at yourToyota dealer.
Remove the wheel ornament
using the wrench.
To protect the wheel ornament,
place a rag between the wrench
and the wheel ornament.
Slightly loosen the wheel nuts
(one turn).
Replacing a tire
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Tire positionWheel chock positions
FrontLeft-hand sideBehind the rear right-hand side tire
Right-hand sideBehind the rear left-hand side tire
RearLeft-hand sideIn front of the front right-hand side tire
Right-hand sideIn front of the front left-hand side tire
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3427-3. Do-it-yourself maintenance
MIRAI_OM_USA_OM62023U
Check the jack point.
The mark ( ) displaying the jack
set position is attached to the
under side of the side mud guard.
Turn the tire jack portion “A” by
hand until the notch of the jack
is in contact with the jack point.
When it is difficult to insert the
jack, turn it sideways and then
insert.
Raise the vehicle until the tire is
slightly raised off the ground.
Remove all the wheel nuts and
the tire.
When resting the tire on the
ground, place the tire so that the
wheel design faces up to avoid
scratching the wheel surface.
mark( )mark( )
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3437-3. Do-it-yourself maintenance
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7
Maintenance and care
Remove any dirt or foreign mat-
ter from the wheel contact sur-
face.
If foreign matter is on the wheel
contact surface, the wheel nuts
may loosen while the vehicle is in
motion, causing the tire to come
off.
WARNING
■Replacing a tire
●Observe the following precautions.
Failure to do so may result in serious injury:
Do not touch the disc wheels or the area around the brakes immedi-
ately after the vehicle has been driven.
After the vehicle has been driven the disc wheels and the area around
the brakes will be extremely hot. Touching these areas with hands,
feet or other body parts while changi ng a tire, etc., may result in burns.
●Failure to follow these precautions could cause the wheel nuts to
loosen and the tire to fall off, resulting in death or serious injury.
• Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tight-
ened, leading to bolt or disc wheel damage. In addition, the oil or
grease can cause the wheel nuts to loosen and the wheel may fall
off, causing a serious accident.
Remove any oil or grease from the wheel bolts or wheel nuts.
• Have the wheel nuts tightened with a torque wrench to 76 ft·lbf
(103 N·m, 10.5 kgf·m) as soon as possible after changing wheels.
• When installing a tire, only use w heel nuts that have been specifi-
cally designed for that wheel.
• If there are any cracks or deforma tions in the bolt screws, nut
threads or bolt holes of the wheel, have the vehicle inspected by
your Toyota dealer.
• When installing the wheel nuts, be sure to install the wheel nuts with
the tapered ends facing inward. (→P. 350)
Installing the tire
1

3447-3. Do-it-yourself maintenance
MIRAI_OM_USA_OM62023U
Install the tire and loosely
tighten each wheel nut by hand
by approximately the same
amount.
Turn the wheel nuts until the
washers come into contact with
the disc wheel.
Lower the vehicle.
Firmly tighten each wheel nut
two or three times in the order
shown in the illustration.
Tightening torque:
76 ft·lbf (103 N·m, 10.5 kgf·m)
Reinstall the wheel ornament.
Stow the tire jack and all tools.
Disc wheel
Washer2
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WARNING
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in
their storage location to reduce the po ssibility of personal injury during a
collision or sudden braking.
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