2022 TOYOTA MIRAI Owners Manual

4257-3. Do-it-yourself maintenance
Owners Manual_USA_M62084_en
7
Maintenance and care
1 Turn the power switch off.
2 Open the fuse box cover.
Fuel cell unit compartment:
type A fuse box
Push the tabs in and lift the lid off.
Fuel cell unit compartment:
type B fuse box
Remove the fuel cell unit compart-
ment cover (P.396) and push the
tabs in and lift the lid off.
Driver’s side instrument panel
Push the tab in and remove the lid.
Make sure to push the tab in during
removal or installation.
Passenger’ side instrument
panel
Remove the cover.
Checking and replac-
ing fuses
If any of the electrical com-
ponents do not operate, a
fuse may have blown. If this
happens, check and replace
the fuses as necessary.
Checking and replacing
fuses

4267-3. Do-it-yourself maintenance
Owners Manual_USA_M62084_enRemove the footwe
ll lights connec-
tor.
Remove the lid.
Make sure to push the claw when
removing/installing the lid.
Trunk
Remove the luggage mat
(  P.352), and while lifting up the
luggage under tray, use a flathead
screw driver and remove the clip.
Push the tab in and lift the lid off.

4277-3. Do-it-yourself maintenance
Owners Manual_USA_M62084_en
7
Maintenance and care
3 Remove the fuse with the
pullout tool.
Only type A fuse can be
removed using the pullout
tool.
4 Check if the fuse is blown.
Type A and B:
Replace the blown fuse with a new
fuse of an appropriate amperage
rating. The amperage rating can be
found on the fuse box lid.
Type C and D:
Contact your Toyota dealer.
Ty p e A
Normal fuse Blown fuse
Type B
Normal fuse
Blown fuse
Type CNormal fuse
Blown fuse
Type DNormal fuse
Blown fuse

4287-3. Do-it-yourself maintenance
Owners Manual_USA_M62084_en
■After a fuse is replaced
●When installing the lid, make sure
that the tab is installed securely.
●If the lights do not turn on even
after the fuse has been replaced,
a bulb may need replacement.
●If the replaced fuse blows again,
have the vehicle inspected by
your Toyota dealer.
■If there is an overload in a cir-
cuit
The fuses are designed to blow, pro-
tecting the wiring harness from
damage.
Adjustment bolt A
Adjustment bolt B
 Make sure the vehicle has a
full tank of fuel and the area
around the headlight is not
deformed.
 Park the vehicle on level
ground.
 Make sure the tire inflation
pressure is at the specified
level.
 Have someone sit in the
driver’s seat.
 Bounce the vehicle several
times.WARNING
■To prevent system break-
downs and vehicle fire
Observe the following precau-
tions.
Failure to do so may cause dam-
age to the vehicle, and possibly a
fire or injury.
●Never use a fuse of a higher
amperage rating than that indi-
cated, or use any other object in
place of a fuse.
●Always use a genuine Toyota
fuse or equivalent.
Never replace a fuse with a
wire, even as a temporary fix.
●Do not modify the fuses or fuse
boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical over-
load determined and repaired by
your Toyota dealer as soon as
possible.
Headlight aim
Vertical movement adjust-
ing bolts
Before checking the head-
light aim

4297-3. Do-it-yourself maintenance
Owners Manual_USA_M62084_en
7
Maintenance and care
1 Using a Phillips-head screw-
driver, turn bolt A in either
direction.
Remember the turning direc-
tion and the number of turns.
2 Turn bolt B the same number
of turns and in the same
direction as step 1.
If the headlight cannot be adjusted
using this procedure, take the vehi-
cle to your Toyota dealer to adjust
the headlight aim.
■LED Lights
The lights consist of a number of
LEDs. If any of t he LEDs burn out,
take your vehicle to your Toyota
dealer to have the light replaced.
■Condensation build-up on the
inside of the lens
Temporary condensation build-up
on the inside of t he headlight lens
does not indicate a malfunction.
Contact your Toyota dealer for more
information in t he following situa-
tions:
●Large drops of water have built up
on the inside of the lens.
●Water has built up inside the
headlight.
Adjusting the headlight
aimLight bulbs
If any lights burn out, have it
replaced by your Toyota
dealer.

4307-3. Do-it-yourself maintenance
Owners Manual_USA_M62084_en

431
Owners Manual_USA_M62084_en
8
8
When trouble arises
When trouble arises
8-1. Essential informationEmergency flashers .... 432
If your vehicle has to be stopped in an emergency.................................. 432
If the vehicle is submerged or water on the road is ris-
ing ............................. 433
8-2. Steps to take in an emer- gency
If your vehicle needs to be towed......................... 435
If you think something is wrong ........................ 439
If a warning light turns on or a warning buzzer sounds
.................................. 441
If a warning message is dis- played........................ 451
If you have a flat tire.... 455
If the fuel cell system will not start ........................... 466
If you lose your keys ... 467
If the fuel door cannot be opened ...................... 468
If the electronic key does not operate properly .. 468
If the 12-volt battery is dis- charged ..................... 471
If your vehicle overheats .................................. 476
If the vehicle becomes stuck .................................. 480

4328-1. Essential information
Owners Manual_USA_M62084_en
8-1.Essential information
Press the switch to flash all of
the turn signal lights.
To turn them off, press the switch
once again.
■Emergency flashers
●If the emergency flashers are
used for a long time while the fuel
cell system is not operating (while
the “READY” indicator is not illu-
minated), the 12-volt battery may
discharge.
●If any of the SRS airbags deploy
(inflate) or in the event of a strong
rear impact, the emergency flash-
ers will turn on automatically.
The emergency flashers will turn
off automatically after operating
for approximately 20 minutes. To
manually turn t he emergency
flashers off, press the switch
twice.
(The emergency flashers may not
turn on automatically depending
on the force of the impact and
conditions of the collision.)
1 Steadily step on the brake
pedal with both feet and
firmly depress it.
Do not pump the brake pedal
repeatedly as this will increase the
effort required to slow the vehicle.
2Shift the shift position to N.
If the shift position is shifted to
N
3 After slowing down, stop the
vehicle in a safe place by the
road.
4 Stop the fuel cell system.
If the shift position cannot be
shifted to N
3 Keep depressing the brake
pedal with both feet to reduce
vehicle speed as much as
possible.
4 To stop the fuel cell system,
press and hold the power
switch for 2 consecutive sec-
onds or more, or press it
Emergency flashers
The emergency flashers are
used to warn other drivers
when the vehicle has to be
stopped on the road due to
a breakdown, etc.
Operating instructions
If your vehicle has to
be stopped in an emer-
gency
Only in an emergency, such
as if it becomes impossible
to stop the vehicle in the
normal way, stop the vehicle
using the following proce-
dure:
Stopping the vehicle