fuse box TOYOTA MIRAI 2022 Owners Manual
Page 363 of 556
3636-4. Using the other interior features
Owners Manual_USA_M62084_en
6
Interior features
■The power outlet can be used 
when
The power switch i s in ACC or ON.
■When stopping the fuel cell sys-
tem
Disconnect electrical devices with 
charging functions, such as mobile 
battery packs. If such devices are 
left connected, the  fuel cell system 
may not stop normally.
Please use as a power supply 
for electronic devices that use 
less than 120 VAC (power con-
sumption of 1500 W).
■Using the power outlets
Rear of the console box
Open the lid.
NOTICE
■To avoid damaging the power 
outlet
Close the power outlet lid when 
the power outlet is not in use. 
Foreign objects or liquids that 
enter the power outlet may cause 
a short circuit.
■To prevent the fuse from 
being blown
Do not use an accessory that 
uses more than 12 V 10 A.
■To prevent inc orrect opera-
tion of the vehicle
When turning the power switch 
off, make sure to disconnect 
accessories designed for 
charging, such as portable char-
gers, power banks,  etc., from the 
power outlet.
If such an accesso ry is left con-
nected, the following may occur:
●The doors cannot be locked 
using the smart key system or 
wireless remote control.
●The opening screen will be dis-
played on the multi-information 
display.
●The interior lights, instrument 
panel lights, etc., will illuminate.
■To prevent 12-volt battery dis-
charge
Do not use the p ower outlet lon-
ger than necessary when the fuel 
cell system is off.
Power outlets (120 VAC) 
(if equipped) 
Page 395 of 556
3957-3. Do-it-yourself maintenance
Owners Manual_USA_M62084_en
7
Maintenance and care
Inverter coolant reservoir ( P.398)
Fuel cell stack coolant reservoir ( P.398)
Fuse boxes ( P.425)
Brake fluid reservoir ( P.399)
Washer fluid tank ( P.399)
Inverter coolant radiator ( P.398)
Electric cooling fan
Condenser ( P.398)
Fuel cell stack coolant radiator ( P.398)
■12-volt battery
 P. 4 0 0
Fuel cell unit compartment
Components 
Page 425 of 556
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 
Page 427 of 556
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 
Page 428 of 556
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 
Page 471 of 556
4718-2. Steps to take in an emergency
Owners Manual_USA_M62084_en
8
When trouble arises
If you have a set of jumper (or 
booster) cables and a second 
vehicle with a 12-volt battery, 
you can jump start your vehicle 
by following the steps below.
1 Confirm that the electronic 
key is being carried.
When connecting the jumper (or 
booster) cables, depending on the 
situation, the ala rm may activate  and doors locked. (
P. 7 1 )
2 Open the hood. Remove the 
fuse box cover. ( P.393)
Push the tabs in and lift the lid off.
3 Open the exclusive jump 
starting terminal cover.
4 Connect a positive jumper cabl e clamp to   on your vehicle and 
connect the clamp on the other end of the positive cable to   on  
the second vehicle. Then, connect a negative cable clamp to   
on the second vehicle and connect the clamp at the other end of 
the negative cable to  .
When connecting to an unpaint ed metallic point  , make the connection 
If  the 12-volt batter y is 
discharged
The following procedures 
may be used to start the fuel 
cell system if the 12-volt 
battery is discharged.
You can also call your Toy-
ota dealer or a qualified 
repair shop.
Restarting the fuel cell 
system 
Page 472 of 556
4728-2. Steps to take in an emergency
Owners Manual_USA_M62084_enafter checking the surrounding a
rea. Also, do not make any connections 
where parts nearby may interfere.
Exclusive jump starting terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery term inal (second vehicle)
Solid, stationary, unpainted metallic point away from the exclu sive 
jump starting terminal and any m oving parts as shown in the illus-
tration
5 Start the engine of the sec-
ond vehicle. Increase the 
engine speed slightly and 
maintain at that level for 
approximately 5 minutes to 
recharge the 12-volt battery 
of your vehicle.
6 Open and close any of the 
doors of your vehicle with the 
power switch off.
7 Maintain the engine speed of 
the second vehicle and start 
the fuel cell system of your 
vehicle by turning the power 
switch to ON.
8 Make sure the “READY” indi-
cator comes on. If the indica- tor does not come on, contact 
your Toyota dealer.
9 Once the fuel cell system has 
started, remove the jumper 
cables in the exact reverse 
order from which they were 
connected.
10Close the exclusive jump  starting terminal cover and 
install the fuse box cover.
Once the fuel cell system starts, 
have the vehicle inspected at 
your Toyota dealer as soon as 
possible.