check engine TOYOTA GR YARIS 2021 User Guide

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4-1. Before driving
Driving
WARNING
■If you hear a squealing or scrap- ing noise (brake pad wear indica-
tors)
Have the brake pads checked and replaced by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer as soon as possible.
Rotor damage may result if the pads are not replaced when needed.
Front brakes only: Moderate levels of brake pad and disc wear allow
enhanced front braking power. As a result, the discs may wear more quickly than conventional brake discs.
Therefore, when replacing the brake pads, Toyota recommends that you also have the thickness of the discs
measured. It is dangerous to drive the vehicle when the wear limits of the brake pads and/or those of the brake
discs are exceeded.
■When the vehicle is stopped
●Do not race the engine. If the vehicle is in any gear other than N, the vehicle may accelerate
suddenly and unexpectedly, caus- ing an accident.
●If the vehicle is stopped on an incline, in order to prevent acci-dents caused by the vehicle rolling
forward or backward, always depress the brake pedal and securely apply the parking brake as
needed.
●Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped may cause the exhaust system to over-
heat, which could result in a fire if combustible material is nearby.
■When the vehicle is parked
●Do not leave glasses, cigarette lighters, spray cans, or soft drink
cans in the vehicle when it is in the sun.Doing so may result in the follow-
ing:
• Gas may leak from a cigarette
lighter or spray can, and may lead to a fire.
• The temperature inside the vehicle may cause the plastic lenses and plastic material of glasses to
deform or crack.
• Soft drink cans may fracture, caus-
ing the contents to spray over the interior of the vehicle, and may also cause a short circuit in the vehicle’s
electrical components.
●Do not leave cigarette lighters in the
vehicle. If a cigarette lighter is in a place such as the glove box or on the floor, it may be lit accidentally
when luggage is loaded or the seat is adjusted, causing a fire.
●Do not attach adhesive discs to the windshield or windows. Do not place containers such as air fresh-
eners on the instrument panel or dashboard. Adhesive discs or con-tainers may act as lenses, causing
a fire in the vehicle.
●Do not leave a door or window
open if the curved glass is coated with a metallized film such as a sil-ver-colored one. Reflected sunlight
may cause the glass to act as a lens, causing a fire.
●Always apply the parking brake, stop the engine and lock the vehi-cle.
Do not leave the vehicle unat- tended while the engine is running.

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4-1. Before driving
Driving
NOTICE
• Do not use the clutch pedal to adjust vehicle speed. When stop-
ping the vehicle with the shift lever in a position other then N, make sure to fully depress the clutch
pedal and stop the vehicle using the brake.Doing so may damage the clutch.
• When stopping the vehicle with the shift lever in a position other than N,
make sure to fully depress the clutch pedal and stop the vehicle using the brakes.
●Do not shift the shift lever to R with-out the vehicle completely stopped.
Doing so may damage the clutch, transmission and gears.
■Avoiding damage to vehicle parts
●Do not turn the steering wheel fully in either direction and hold it there
for an extended period of time. Doing so may damage the power steering motor.
●When driving over bumps in the road, drive as slowly as possible to
avoid damaging the wheels, under- side of the vehicle, etc.
●Make sure to idle the engine imme-diately after high-load driving. Stop the engine only after the turbo-
charger has cooled down. Failure to do so may cause damage to the turbocharger.
■If you get a flat tire while driving
A flat or damaged tire may cause the
following situations. Hold the steering wheel firmly and gradually depress the brake pedal to slow down the
vehicle.
●It may be difficult to control your vehicle.
●The vehicle will make abnormal sounds or vibrations.
●The vehicle will lean abnormally.
Information on what to do in case of a
flat tire ( →P.325)
■When encountering flooded
roads
Do not drive on a road that has flooded after heavy rain, etc. Doing so
may cause the following serious dam- age to the vehicle:
●Engine stalling
●Short in electrical components
●Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle becomes flooded or stuck in mud or
sand, be sure to have any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer check
the following:
●Brake function
●Changes in quantity and quality of oil and fluid used for the engine,
transmission, transfer, differential, etc.
●Lubricant condition for the propel-ler shaft, bearings and suspension joints (where possible), and the
function of all joints, bearings, etc.

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4-2. Driving procedures
4-2.Driving pro cedu res
1Check that the parking brake is
set.
2Check that the shift lever is in N.
3Firmly depress the clutch pedal.
and a message will be displayed
on the multi-information display.
If it is not displayed, the engine cannot
be started.
4Press the engine switch shortly
and firmly.
When operating the engine switch, one
short, firm press is enough. It is not
necessary to press and hold the switch.
The engine will crank until it starts or for
up to 30 seconds, whichever is less.
Continue depressing the clutch pedal
until the engine is completely started.
The engine can be started from any
engine switch mode.
■Engine switch illumination
In the following situations, the engine
switch is illuminated.
●When the driver’s or passenger’s door
is opened.
●When the engine switch is in ACC or
ON.
●When the engine switch mode is
changed from ACC or ON to off.
Also, in the following situation, the
engine switch flashes.
●When depressing the clutch pedal
while carrying the electronic key.
■If the engine does not start
●The engine immobilizer system may
not have been deactivated. (→P. 7 2 )
Contact any authorized Toyota retailer
or Toyota authorized repairer, or any
reliable repairer.
●If a message related to start-up is
shown on the multi-information dis-
play, read the message and follow the
instructions.
■If the battery is discharged
The engine cannot be started using the
smart entry & start system. Refer to
P.341 to restart the engine.
■Electronic key battery depletion
→P. 1 0 0
■Conditions affecting operation
→P. 1 1 0
■Notes for the entry function
→P. 1 1 1
■Steering lock function
●After turning the engine switch off and
opening and closing the doors, the
steering wheel will be locked due to
the steering lock function. Operating
the engine switch again automatically
cancels the steering lock.
●When the steering lock cannot be
released, “Push Engine Switch while
Turning Steering Wheel in Either
Direction” will be displayed on the
Engine (ignition) switch
Performing the following oper-
ations when carrying the elec-
tronic key on your person
starts the engine or changes
engine switch modes.
Starting the engine

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4-2. Driving procedures
Driving
multi-information display.
Press the engine switch shortly and firmly while turning the steering wheel left and right.
●To prevent the steering lock motor from overheating, operation of the
motor may be suspended if the engine is turned on and off repeatedly in a short period of time. In this case,
refrain from operating the engine switch. After about 10 seconds, the steering lock motor will resume func-
tioning.
■Electronic key battery
→ P. 2 9 5
■Operation of the engine switch
●If the switch is not pressed shortly and firmly, the engine switch mode may not change or the engine may not
start.
●If attempting to restart the engine
immediately after turning the engine switch off, the engine may not start in some cases. After turning the engine
switch off, please wait a few seconds before restarting the engine.
■Customization
If the smart entry & start system has
been deactivated in a customized set- ting, refer to P.339.
1 Stop the vehicle completely.
2 Set the parking brake. (→P.143)
Check the parking brake indicator is illuminated.
WARNING
■When starting the engine
Always start the engine while sitting in
the driver’s seat. Do not depress the accelerator pedal while starting the engine under any circumstances.
Doing so may cause an accident resulting in death or serious injury.
■Caution while driving
If engine failure occurs while the vehi- cle is moving, do not lock or open the
doors until the vehicle reaches a safe and complete stop. Activation of the steering lock in this circumstance may
lead to an accident, resulting in death or serious injury.
NOTICE
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have your vehicle checked by any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer
immediately.
■Symptoms indicating a malfunc-
tion with the engine switch
If the engine switch seems to be oper- ating somewhat differently than usual,
such as the switch sticking slightly, there may be a malfunction. Contact any authorized Toyota retailer or
Toyota authorized repairer, or any reli- able repairer immediately.
Stopping the engine

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4-2. Driving procedures
3Shift the shift lever to N.
( →P.139)
4 Press the engine switch.
The engine will stop, and the meter dis- play will be extinguished.
5 Release the brake pedal and
check that “ACCESSORY” or
“IGNITION ON” is not shown on
the multi-information display.
Modes can be changed by pressing
the engine switch with clutch pedal
released. (The mode changes each
time the switch is pressed.)
“ACCESSORY”
“IGNITION ON”
1 OFF
The emergency flashers can be used.
2ACC
Some electrical components such as
the audio system can be used.
“ACCESSORY” will be displayed on the
multi-information display.
3 ON
All electrical components can be used.
“IGNITION ON” will be displayed on the
multi-information display.
■Auto power off function
If the vehicle is left in ACC or ON (the
engine is not running) for more than 20 minutes, the engine switch will automati-cally turn off. However, this function can-
not entirely prevent battery discharge. Do not leave the vehicle with the engine switch in ACC or ON for long periods of
time when the engine is not running.
WARNING
■Stopping the engine in an emer-
gency
●If you want to stop the engine in an emergency while driving the vehi-
cle, press and hold the engine switch for more than 2 seconds, or press it briefly 3 times or more in
succession. ( →P.306) However, do not touch the engine switch while driving except in an
emergency. Turning the engine off while driving will not cause loss of steering or braking control, but the
power assist to these systems will be lost. This will make it more diffi-cult to steer and brake, so you
should pull over and stop the vehi- cle as soon as it is safe to do so.
●If the engine switch is operated while the vehicle is running, a warn-ing message will be shown on the
multi-information display and a buzzer sounds.
●To restart the engine after perform-ing an emergency shutdown, depress the clutch pedal and then
press the engine switch.
Changing engine switch
modes

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4-2. Driving procedures
1Right turn
2 Lane change to the right (move
the lever partway and release it)
The right hand signals will flash 3 times.
3 Lane change to the left (move
the lever partway and release it)
The left hand signals will flash 3 times.
4 Left turn
■Turn signals can be operated when
The engine switch is in ON.
■If the indicator flashes faster than
usual
Check that a light bulb in the front or rear turn signal lights has not burned
out.
WARNING
■Gear Shift Indicator display
For safety, the driver should not look
only at the display. Refer to the dis- play when it is safe to do so while considering actual traffic and road
conditions. Failure to do so may lead to an acci-dent.
Turn signal lever
Operating instructions

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4-3. Operating the lights and wipers
Driving
4 Temporary operation
When “AUTO” is selected, the wipers
will operate automatically when the
sensor detects falling rain. The system
automatically adjusts wiper timing in
accordance with rain volume and vehi-
cle speed.
When “AUTO” is selected, the sen-
sor sensitivity can be adjusted as
follows by turning the switch ring.
5 Increases the rain-sensing wind-
shield wiper sensitivity
6 Decreases the rain-sensing
windshield wiper sensitivity
7 Washer/wiper dual oper-
ation
Pulling the lever operates the wipers
and washer.
Wipers will automatically operate a cou-
ple of times after the washer squirts.
■The windshield wiper and washer can be operated when
The engine switch is in ON.
■Effects of vehicle speed on wiper operation
Vehicle speed affects the Intermittent
wiper interval.
■Raindrop sensor
●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 bugs etc. are present on the wind-
shield.
●If the wiper is turned to AUTO mode
while the engine switch is in ON, the wipers will operate once to show that AUTO mode is activated.
●If the temperature of the raindrop sen-sor is 85°C (185°F) or higher, or -15°C
(5°F) or lower, automatic operation may not occur. In this case, operate
the wipers in any mode other than AUTO mode.
■If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the windshield washer fluid reservoir.

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4-5. Using the driving support systems
buzzer, press .
The buzzers for the Toyota parking
assist-sensor and RCTA function (if
equipped) will be muted simultane-
ously.
Mute will be canceled automatically
in the following situations:
z When the shift lever is changed.
z When the vehicle speed exceeds
a certain speed.
z When there is a malfunction in a
sensor or the system is tempo-
rarily unavailable.
z When the operating function is
disabled manually.
z When the engine switch is turned
off.
*: If equipped
Meter control switches
Turning the RCTA function on/off.
RCTA (Rear Crossing
Traffic Alert)*
The RCTA function uses the
BSM rear side radar sensors
installed behind the rear
bumper. This function is
intended to assist the driver in
checking areas that are not
easily visible when backing
up.
WARNING
■Cautions regarding the use of the system
There is a limit to the degree of recog- nition accuracy and control perfor-mance that this system can provide,
do not overly rely on this system. The driver is always responsible for paying attention to the vehicle’s surroundings
and driving safely. ( →P.201)
■To ensure the system can oper-
ate properly
→ P. 2 0 2
System components

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4-5. Using the driving support systems
Driving
ing operation.
■Automatic system cancelation of
emergency brake signal
The emergency brake signal will be can-
celed in any of the following situations:
●The emergency flashers are turned
on.
●The system judges from the vehicle
deceleration that is not a sudden brak-
ing operation.
■Secondary Collision Brake operat-
ing conditions (if equipped)
The system operates when the SRS air-
bag sensor detects a collision while the
vehicle is in motion.
However, the system does not operate in any of the following situations.
●The vehicle speed is below 10 km/h (6
mph)
●Components are damaged
■Secondary Collision Brake auto-
matic cancelation (if equipped)
The system is automatically canceled in
any of the following situations.
●The vehicle speed drops below
approximately 10 km/h (6 mph)
●A certain amount of time elapses
during operation
●The accelerator pedal is depressed a
large amount
■If a message about AWD is shown on the multi-information display
Perform the following actions.
MessageDetails/Actions
“AWD System
Overheated
Switching to
2WD Mode”
AWD system is overheating.
→Perform the following actions.
• Stop the vehicle in a safe place and let the engine idle.
*
Once the display message on the multi-information display turns
off, there is no problem continuing to drive.
If the message does not disappear, have your vehicle checked by
any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer immediately.

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4-5. Using the driving support systems
*: After stopping the vehicle, do not stop the engine until the display message has
turned off.
“AWD System
Overheated
2WD Mode
Engaged”
The vehicle switched from all-wheel drive (AWD) to front wheel
drive due to overheating.
→ Perform the following actions.
• Stop the vehicle in a safe place and let the engine idle.*
Once the display message on the multi-information display turns
off, the AWD system returns to normal.
If the message does not disappear, have your vehicle checked by
any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer immediately.
“AWD System
Malfunction
2WD Mode
Engaged Visit
Your Dealer”
A malfunction occurred in the AWD system.
→ Have your vehicle checked by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
MessageDetails/Actions
WARNING
■The ABS does not operate effec- tively when
●The limits of tire gripping perfor-mance have been exceeded (such as excessively worn tires on a snow
covered road).
●The vehicle hydroplanes while driv-
ing at high speed on wet or slick roads.
■Stopping distance when the ABS is operating may exceed that of normal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always maintain a safe distance from
the vehicle in front of you, especially in the following situations:
●When driving on dirt, gravel or snow-covered roads
●When driving with tire chains
●When driving over bumps in the road
●When driving over roads with pot-holes or uneven surfaces
■TRC/VSC may not operate effec-tively when
Directional control and power may not
be achievable while driving on slip- pery road surfaces, even if the TRC/VSC system is operating. Drive
the vehicle carefully in conditions where stability and power may be lost.
■Hill-start assist control does not operate effectively when
●Do not overly rely on hill-start assist control. Hill-start assist control may not operate effectively on steep
inclines and roads covered with ice.