Page 129 of 464
1294-2. Opening, closing and locking the doors
4
Operation of each component
MIRAI_OM_USA_OM62023U
P. 11 7
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■Before driving
● Make sure that the trunk lid is fully closed. If the trunk lid is not fully closed,
it may open unexpectedly while driving and hit near-by objects or luggage
in the trunk may be thrown out, causing an accident.
● Do not allow children to play in the trunk.
If a child is accidentally locked in the trunk, they could suffer from heat
exhaustion, suffocation or other injuries.
● Do not allow a child to open or close the trunk lid.
Doing so may cause the trunk lid to open unexpectedly, or cause the
child’s hands, head, or neck to be caught by the closing trunk lid.
■ Important points while driving
Never let anyone sit in the trunk. In the event of sudden braking or a colli-
sion, they are susceptible to death or serious injury.
Page 130 of 464

1304-2. Opening, closing and locking the doors
MIRAI_OM_USA_OM62023U
WARNING
■Using the trunk
Observe the following precautions.
Failure to do so may cause parts of the body to be caught, resulting in seri-
ous injury.
● Remove any heavy loads, such as snow and ice, from the trunk lid before
opening it. Failure to do so may cause the trunk lid to suddenly shut again
after it is opened.
● When opening or closing the trunk lid, thoroughly check to make sure the
surrounding area is safe.
● If anyone is in the vicinity, make sure they are safe and let them know that
the trunk is about to open or close.
● Use caution when opening or closing the trunk lid in windy weather as it
may move abruptly in strong wind.
● Do not attach any accessories other than genuine Toyota parts to the trunk
lid. Such additional weight on the trunk lid may cause the lid to suddenly
shut again after it is opened.
●The trunk lid may suddenly shut if it is
not opened fully. It is more difficult to
open or close the trunk lid on an incline
than on a level surface, so beware of
the trunk lid unexpectedly opening or
closing by itself. Make sure that the
trunk lid is fully open and secure before
using the trunk.
● When closing the trunk lid, take extra
care to prevent your fingers, etc., from
being caught.
● When closing the trunk lid, make sure to
press it lightly on its outer surface. If the
trunk handle is used to fully close the
trunk lid, it may result in hands or arms
being caught.
Page 132 of 464

1324-2. Opening, closing and locking the doors
MIRAI_OM_USA_OM62023U■
Effective range (areas within whic h the electronic key is detected)
■ Alarms and warning indicators
A combination of exterior and interior alarms as well as warning messages
shown on the multi-information display are used to prevent theft of the vehicle
and accidents resulting from erroneous operation. Take appropriate mea-
sures in response to any warning message on the multi-information display.
(→P. 376)
The following table describes circumstances and correction procedures when
only alarms are sounded.
When locking or unlocking the
doors
The system can be operated
when the electronic key is within
about 2.3 ft. (0.7 m) of an outside
door handle. (Only the doors
detecting the key can be oper-
ated.)
When opening the trunk
The system can be operated when the electronic key is within
about 2.3 ft. (0.7 m) of the trunk release button.
When starting the fuel cell system or changing power switch
modes
The system can be operated when the electronic key is inside the
vehicle.
AlarmSituationCorrection procedure
Exterior alarm sounds
once for 5 seconds The trunk was closed
while the electronic key
was still inside the trunk
and all the doors were
locked.
Retrieve the electronic
key from the trunk and
close the trunk lid.
An attempt was made
to lock the vehicle while
a door was open. Close all of the doors
and lock the doors
again.
Interior alarm sounds
continuously The power switch was
turned to ACCESSORY
mode while the driver’s
door was open (or the
driver’s door was
opened while the
power switch was in
ACCESSORY mode).Turn the power switch
off and close the
driver’s door.
Page 137 of 464

1374-2. Opening, closing and locking the doors
4
Operation of each component
MIRAI_OM_USA_OM62023U■
Certification for the smart key system
FCC ID: NI4TMLF12-6
FCC ID: HYQ23AAB
FCC ID: HYQ14FBA
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 interfer-
ence, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
WARNING
■ Caution regarding interfer ence with electronic devices
● People with implantable cardiac pacemakers, cardiac resynchronization
therapy-pacemakers or implantable card ioverter defibrillators should keep
away from the smart key system antennas. ( →P. 132)
The radio waves may affect the operation of such devices. If necessary,
the entry function can be disabled. Ask your Toyota dealer for details, such
as the frequency of radio waves and timing of the emitted radio waves.
Then, consult your doctor to see if you should disable the entry function.
● User of any electrical medical device other than implantable cardiac pace-
makers, cardiac resynchronization therapy-pacemakers or implantable
cardioverter defibrillators should consult the manufacturer of the devic\
e for
information about its operation under the influence of radio waves.
Radio waves could have unexpected effects on the operation of such
medical devices.
Ask your Toyota dealer for details for disabling the entry function.
Page 139 of 464
1394-3. Adjusting the seats
4
Operation of each component
MIRAI_OM_USA_OM62023U
WARNING
■When adjusting the seat position
● Take care when adjusting the seat position to ensure that other passen-
gers are not injured by the moving seat.
● Do not put your hands under the seat or near the moving parts to avoid
injury.
Fingers or hands may become jammed in the seat mechanism.
● Make sure to leave enough space around the feet so they do not get stuck.
■ Seat adjustment
To reduce the risk of sliding under the lap belt during a collision, do not
recline the seat more than necessary.
If the seat is too reclined, the lap belt may slide past the hips and apply
restraint forces directly to the abdomen, or your neck may contact the
shoulder belt, increasing the risk of death or serious injury in the event of an
accident.
Adjustments should not be made while driving as the seat may unexpect-
edly move and cause the driver to lose control of the vehicle.
Page 144 of 464
1444-3. Adjusting the seats
MIRAI_OM_USA_OM62023U
■Recalling the driving position us ing the memory recall function
● Different driving positions can be registered for each electronic key. There-
fore, the driving position that is recalled may be different depending on the
key being carried.
● If a door other than the driver’s door is unlocked with the smart key system,
the driving position cannot be recalled. In this case, press the driving posi-
tion button which has been set.
■ Customization
The unlock door settings of the memory recall function can be customized.
(Customizable features: →P. 437)
WARNING
■ Seat adjustment caution
Take care during seat adjustment so that the seat does not strike the rear
passenger or squeeze your body against the steering wheel.
Page 146 of 464

1464-3. Adjusting the seats
MIRAI_OM_USA_OM62023U
■Removing the head restraints
■ Installing the head restraints
■ Adjusting the height of the head restraints (front seats)
■ Adjusting the rear seat head restraint
Always raise the head restraint from the stowed position when using. Pull the head restraint up while pressing
the lock release button.
If the head restraint touches the ceiling,
making the removal difficult, change the
seat height or angle. ( →P. 138)
Align the head restraint with the installa-
tion holes and push it down to the lock
position.
Press and hold the lock release button
when lowering the head restraint.
Make sure that the head restraints are
adjusted so that the center of the head
restraint is closest to the top of your ears.
WARNING
■ Head restraint precautions
Observe the following precautions regarding the head restraints.
Failure to do so may result in death or serious injury.
● Use the head restraints designed for each respective seat.
● Adjust the head restraints to the correct position at all times.
● After adjusting the head restraints, push down on them and make sure
they are locked in position.
● Do not drive with the head restraints removed.
Lock
release
button
Lock
release
button
Page 148 of 464
1484-4. Adjusting the steering wheel and mirrors
MIRAI_OM_USA_OM62023U
WARNING
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and cause an acci-
dent, resulting in death or serious injury.