sensor TOYOTA MIRAI 2023 User Guide

1995-3. Operating the lights and wipers
Owners Manual_USA_M62064_en
5
Driving
■Headlight control sensor
The sensor may not function prop-
erly if an object is placed on the sen-
sor, or anything that blocks the
sensor is affixed to the windshield.
Doing so interfere s with the sensor
detecting the level of ambient light
and may cause the automatic head-
light system to malfunction.
■Automatic light off system
●When the headlights are on: The
headlights and tail lights turn off
30 seconds after the driver’s door
is opened and clos ed if the power
switch is turned to ACC or off.
(The lights turn off immediately if
on the key is pressed after all
the doors are closed.)
●When only the tail lights are on:
The tail lights tu rn off automati-
cally if the power switch is turned
to ACC or off and the driver’s door
is opened.
To turn the lights on again, turn the
power switch to ON, or turn the light
switch off once and then back to
or .
■Light reminder buzzer
A buzzer sounds when the power
switch is turned off or turned to ACC
and the driver’s door is opened
while the lights are turned on.
■Automatic headlight leveling
system (if equipped)
The level of the headlights is auto-
matically adjusted according to the
number of passengers and the load-
ing condition of the vehicle to ensure that the headlights do not
interfere with other road users.
■Windshield wiper linked head-
light illumination
When driving during daytime with
the headlight switch turned to , if
the windshield wipers are used, the
headlights will turn o n automatically
after several seconds to help
enhance the visibility of your vehi-
cle.
■12-volt battery-saving function
In order to prevent the 12-volt bat-
tery of the vehicle from discharging,
if the headlights and/or tail lights are
on when the power switch is turned
off the 12-volt battery saving func-
tion will operate and automatically
turn off all the lig hts after approxi-
mately 20 minutes. When the power
switch is turned to ON, the 12-volt
battery-saving function will be dis-
abled.
When any of the following are per-
formed, the 12-volt battery-saving
function is canceled once and then
reactivated. All the lights will turn off
automatically 20 minutes after the
12-volt battery-saving function has
been reactivated:
●When the headlight switch is oper-
ated
●When a door or the trunk is
opened or closed
■Customization
Some functions can be customized.
(  P.512)
NOTICE
■To prevent 12-volt battery dis-
charge
Do not leave the lights on longer
than necessary when the fuel cell
system is off.

2025-3. Operating the lights and wipers
Owners Manual_USA_M62064_en• When driving in inclement weather
(heavy rain, snow, fog, sand-
storms, etc.)
• When the windshield is obscured by fog, mist, ice, dirt, etc.
• When the windshield is cracked or
damaged
• When the front camera is deformed or dirty
• When the temperature of the front camera is extremely high
• When the surrounding brightness
level is equal to that of headlights,
tail lights or fog lights
• When headlights or tail lights of
vehicles ahead are turned off,
dirty, changing color, or not aimed
properly
• When the vehicle is hit by water, snow, dust, etc., from a preceding
vehicle
• When driving thr ough an area of
intermittently changing brightness
and darkness
• When frequently and repeatedly driving ascending/descending
roads, or roads with rough, bumpy
or uneven surfaces (such as
stone-paved roads, gravel roads,
etc.)
• When frequently and repeatedly taking curves or driving on a wind-
ing road
• When there is a hi ghly reflective
object ahead of th e vehicle, such
as a sign or mirror
• When the back of a preceding vehicle is highly reflective, such as
a container on a truck
• When the vehicle’s headlights are damaged or dirty, or are not aimed
properly
• When the vehicle is listing or titling due to a flat tire, a trailer being
towed, etc.
• When the headlights are changed between the high beams and low
beams repeatedly in an abnormal
manner
• When the driver believes that the high beams may be flashing or
dazzling pedestrians or other driv-
ers
■Temporarily lowering sensor
sensitivity
The sensitivity of the sensor can be
temporarily lowered.
1 Turn the power s witch off while
the following conditions are met.
●The headlight switch is in or
.
●The headlight switch lever is in
low beam position.
●Automatic High Beam switch is
on.
2 Turn the power switch to ON.
3 Within 60 seconds after step 2,
repeat pushing the headlight
switch lever to the high beam
position then pulling it to the orig-
inal position quickly 10 times,
then leave the lever in the origi-
nal position.
4 If the sensitivity is changed, the
AHB indicator is turn on and off 3
times.
■Switching to the high
beams
Push the lever away from you.
The AHB indicator will turn off and
the high beam indi cator will turn on.
Pull the lever to its original position
to activate the Automatic High
Beam system.
Turning the high beams
on/off manually

2055-3. Operating the lights and wipers
Owners Manual_USA_M62064_en
5
Driving
8 Washer/wiper dual
operation
Pulling the lever o perates the wip-
ers and washer.
(After operating several times, the
wipers operate once more time
after a short delay to prevent drip-
ping. However, the dripping preven-
tion does not operate while the
vehicle is moving.)
Rain-sensing windshield wip-
ers
When is selected, the wip-
ers will operate automatically
when the sensor detects falling
rain. The system automatically
adjusts wiper timing in accor-
dance with rain volume and
vehicle speed. 1
(U.S.A.) or (Canada)
Off
2 Rain-sensing wiper oper-
ationThe wipers will op erate automati-
cally when the sensor detects fall-
ing rain. The syst em automatically
adjusts wiper timi ng in accordance
with rain volume and vehicle speed.
3 (U.S.A.) or (Canada)
Low speed wiper operation
4 (U.S.A.) or (Canada)
High speed wiper operation
5 (U.S.A.) or (Canada)
Temporary operation
When is selected, the sen-
sor sensitivity can be adjusted
by turning the switch ring.

2065-3. Operating the lights and wipers
Owners Manual_USA_M62064_en
6Increases the sensitivity
7 Decreases the sensitivity
8 Washer/wiper dual
operation
Pulling the lever o perates the wip-
ers and washer.
(After operating several times, the
wipers operate once more time
after a short delay to prevent drip-
ping. However, the dripping preven-
tion does not operate while the
vehicle is moving.)
9* Rear camera washer
operation
Pushing the lever operates the rear
camera washer and cleans the rear
camera and the camera for the Dig-
ital Rear-view Mirror.
*: Vehicles with Digital Rear-view Mirror
■The windshield wiper and
washer can be operated when
The power switch is in ON.
■Effects of vehicle speed on
wiper operation (vehicles with
rain-sensing windshield wipers)
Even when the wipers are not in
AUTO mode, vehicle speed affects
the time until the drip prevention
wiper sweep occurs.
With low speed windshield wiper
operation selected, wiper operation
will be switched fro m low speed to
intermittent wiper operation only
when the vehicle is stationary.
(However, when the sensor sensitiv-
ity is adjusted to the highest level,
the mode cannot be switched.)
■Raindrop sensor (vehicles with
rain-sensing windshield wipers)
●The raindrop sensor judges the
amount of raindrops.
An optical sensor is adopted. It
may not operate properly when
sunlight from the rising or setting
of the sun intermittently strikes the
windshield, or if b ugs, etc., are
present on the windshield.
●If the wiper is turned to AUTO
mode while the power switch is in
ON, the wipers will operate once
to show that AUTO mode is acti-
vated.
●If the temperature of the raindrop
sensor is 185°F (85°C) or higher,
or 5°F (-15°C) or lower, automatic
operation may not occur. In this
case, operate the wipers in any
mode other than AUTO mode.

2075-3. Operating the lights and wipers
Owners Manual_USA_M62064_en
5
Driving
■If no windshield washer fluid
sprays
Check that the wash er nozzles are
not blocked if there is washer fluid in
the windshield washer fluid reser-
v oi r.
■Front door opening linked wind-
shield wiper stop function
(vehicles with rain-sensing
windshield wipers)
When is selected and the wind-
shield wipers are operating, if a front
door is opened while the vehicle is
stopped and the P shift position is
selected, operation of the wind-
shield wipers will be stopped to pre-
vent anyone near the vehicle from
being sprayed by water from the
wipers. When the front door is
closed, wiper operation will resume.
■When stopping fuel cell system
in an emergency while driving
If the windshield wipers are operat-
ing when fuel cell system is
stopped, the windshield wipers will
operate in high speed operation.
After the vehicle is stopped, opera-
tion will return to normal when the
power switch is turned to ON, or
operation will stop w hen the driver’s
door is opened.
When the windshield wipers are
not being used, they retract to
below the hood. To enable the
windshield wipers to be lifted
WARNING
■Caution regarding the use of
windshield wipers in AUTO
mode (vehicles with rain-
sensing windshield wipers)
The windshield wipers may oper-
ate unexpectedly if the sensor is
touched or the windshield is sub-
ject to vibration in AUTO mode.
Take care that your fingers or any-
thing else do not become caught
in the windshield wipers.
■Caution regarding the use of
washer fluid
When it is cold, do not use the
washer fluid unt il the windshield
becomes warm. The fluid may
freeze on the windshield and
cause low visibility. This may lead
to an accident, resulting in death
or serious injury.
NOTICE
■When there is no washer fluid
spray from the nozzle
Damage to the washer fluid pump
may be caused if the lever is
pulled toward you and held con-
tinually.
■When a nozzle becomes
blocked
In this case, contact your Toyota
dealer.
Do not try to clear it with a pin or
other object. The nozzle will be
damaged.
Changing the windshield
wiper rest position/Lifting
the windshield wipers

2135-4. Refueling
Owners Manual_USA_M62064_en
5
Driving
■Error operation prevention
function
When the fuel door is open, the fuel
cell system will not start. When the
“READY” indicator is on, the fuel
door will not open.
■If “Open Filler Door Detected
Stop in a Safe Place Close
Hydrogen Filler Door” is dis-
played on the multi-information
display
The fuel door is open. Stop the vehi-
cle in a safe place and close the fuel
door.
■If “Open Filler Door Detected
Close Hydrogen Filler Door
Restart Vehicle” is displayed on
the multi-information display
The fuel door is open and the fuel
cell system cannot be started. Shift
the shift position to P and, turn the
power switch off, then:
1 Check whether the cap has been
reinstalled.
2 Close the fuel door.
If the warning message on the multi-
information display turns off at this
time, there is no malfunction. How-
ever, if the display continues to
show, the sensor may be damaged.
Have the vehicle inspected by your
Toyota dealer.
It can be started 1 time at intervals
of repeating the st arting operations
5 times (With the brake pedal
depress, press the power switch
operations 9 times within the inter-
val of 2 seconds). Operate the vehi-
cle after checking to be sure that the
hydrogen fueling nozzle is not con-
nected to the vehicle.

2145-5. Using the driving support systems
Owners Manual_USA_M62064_en
5-5.Using the driving support systems
*: Vehicles with Toyota Teammate Advanced Drive, re fer to “Toyota
Teammate Advanced Drive
OWNER’S MANUAL”.
■PCS (Pre-Collision System)
 P.219
■LTA (Lane Tracing Assist)
 P.230
■AHB (Automatic High
Beam)
 P.200
■RSA (Road Sign Assist)*
P.241
*: If equipped
■Dynamic radar cruise con-
trol with full-speed range
 P.244 Two types of sensors, located
behind the front grille and wind-
shield, detect information neces-
sary to operate the drive assist
systems.
Radar sensor
Front camera
Toyota Safety Sense
2.5 +*
The Toyota Safety Sense
2.5 + consists of the follow-
ing drive assist systems
and contributes to a safe
and comfortable driving
experience:
Driving assist system
WARNING
■Toyota Safety Sense 2.5 +
The Toyota Safety Sense 2.5 + is
designed to operate under the
assumption that the driver will
drive safely, and is designed to
help reduce the impact to the
occupants and the vehicle in the
case of a collision or assist the
driver in normal driving condi-
tions.
As there is a limit to the degree of
recognition accuracy and control
performance that this system can
provide, do not overly rely on this
system. The driver is always
responsible for paying attention to
the vehicle’s su rroundings and
driving safely.
Sensors

2155-5. Using the driving support systems
Owners Manual_USA_M62064_en
5
Driving
WARNING
■To avoid malfunction of the
radar sensor
Observe the following precau-
tions.
Otherwise, the radar sensor may
not operate properly, possibly
leading to an accident resulting in
death or serious injury.
●Keep the radar sensor and the
radar sensor cover clean at all
times.
Radar sensor
Radar sensor cover
If the front of the r adar sensor or
the front or back of the radar sen-
sor cover is dirty or covered with
water droplets, snow, etc., clean
it.
Clean the radar sensor and radar
sensor cover with a soft cloth to
avoid damaging them.
●Do not attach accessories,
stickers (including transparent
stickers) or other items to the
radar sensor, radar sensor
cover or surrounding area.
●Do not subject the radar sensor
or its surrounding area to a
strong impact.
If the radar sensor, front grille,
or front bumper has been sub-
jected to a strong impact, have
the vehicle insp ected by your
Toyota dealer.
●Do not disassemble the radar
sensor.
●Do not modify or paint the radar
sensor or radar sensor cover.
●In the following cases, the radar
sensor must be recalibrated.
Contact your Toyota dealer for
details.
• When the radar s ensor or front
grille are removed and installed,
or replaced
• When the front bumper is replaced
■To avoid malfunction of the
front camera
Observe the following precau-
tions.
Otherwise, the f ront camera may
not operate properly, possibly
leading to an accident resulting in
death or serious injury.
●Keep the windshield clean at all
times.
• If the windshield is dirty or cov-
ered with an o ily film, water
droplets, snow, etc., clean the
windshield.
• If a glass coating agent is applied to the windshield, it will
still be necessary to use the
windshield wipers to remove
water droplets, etc., from the
area of the windshield in front of
the front camera.
• If the inner side of the wind- shield where the front camera is
installed is dirty, contact your
Toyota dealer.

2175-5. Using the driving support systems
Owners Manual_USA_M62064_en
5
Driving
■If a warning message is displayed on the multi-information disp lay
A system may be tempor arily unavailable or there may be a malfu nction in
the system.
●In the following situations, perform the actions specified in t he table. When
the normal operating conditions are detected, the message will disappear
and the system will be come operational.
If the message does not disapp ear, contact your Toyota dealer.
SituationActions
When the area around a camera is
covered with dirt, moisture (fogged
up, covered with condensation, ice,
etc.), or other foreign matterUsing the wiper and A/C function,
remove the dirt and other attached
matter ( P.334, 342).
When the temperature around the
front camera is outside of the opera-
tional range, such as when the vehi-
cle is in the sun or in an extremely
cold environment
If the front camera is hot, such as
after the vehicle had been parked in
the sun, use the air conditioning sys-
tem to decrease the temperature
around the front camera.
If a sunshade was used when the
vehicle was parked, depending on its
type, the sunlight reflected from the
surface of the sunshade may cause
the temperature of the front camera
to become excessively high.
If the front camera is cold, such after
the vehicle is parked in an extremely
cold environment, use the air condi-
tioning system to increase the tem-
perature around the front camera.
The area in front o f the front camera
is obstructed, such as when the
hood is open or a sticker is attached
to the part of the win dshield in front
of the front camera.
Close the hood, rem ove the sticker,
etc., to clear the obstruction.
When “Pre-Collisio n System Radar
In Self Calibration Unavailable See
Owner’s Manual” is displayed.Check whether there is attached
materials on the radar sensor and
radar sensor cover, and if there is,
remove it.

2185-5. Using the driving support systems
Owners Manual_USA_M62064_en
●In the following situations, if the situation has changed (or the vehicle has
been driven for some time) and the normal operating conditions are
detected, the message will disappear and the system will become opera-
tional.
If the message does not disappea r, contact your Toyota dealer.
• When the temperature around the radar sensor is outside of the opera-
tional range, such as when the vehicle is in the sun or in an e xtremely cold
environment
• When the front camera cannot d etect objects in front of the vehicle, such
as when driving in the dark, sno w, or fog, or when bright lights are shining
into the front camera
• Depending on the conditions in the vicinity of the vehicle, th e radar may
judge the surrounding environment can not be properly recognize d. In that
case, “Pre-Collision System Unavailable See Owner’s Manual” is dis-
played.