ECO mode TOYOTA COROLLA HATCHBACK 2021 (in English) Owner's Guide
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Page 393 of 576

3936-1. Using the air conditioning system and defogger
COROLLA H/B_U
6
Interior features
Vehicles with DUAL mode air conditioning system Left-hand side temperature control switch
Right-hand side temperature control switch
“SYNC” switch
“A/C” switch
Outside air mode switch
Recirculated air mode switch
Airflow mode control switch
Fan speed increases switch
Fan speed decreases switch
Eco air conditioning mode switch
Rear window defogger and outside rear view mirror defoggers 
switch
Windshield defogger switch
Off switch
Automatic mode switch
■Adjusting the temperature 
setting
To adjust the temperature set-
ting, turn the temperature con-
trol switch clockwise (warm) or 
counterclockwise (cool).
If “A/C” switch is not pressed, the 
system will blow ambient tempera-
ture air or heated air.
The air conditioning system 
switches between individual and  synchronized modes each time 
“SYNC” switch is pressed.
Synchronized modes (indicator on):
The left-hand side temperature 
control switch can be used to adjust 
the temperature for the driver’s and 
front passenger’s side. At this time, 
operate the right-hand side tem-
perature control switch to enter 
individual mode.
Individual modes (indicator off): 
Page 395 of 576

3956-1. Using the air conditioning system and defogger
COROLLA H/B_U
6
Interior features
windshield and front side win-
dows.
Press the windshield defogger 
switch.
Set the outside/recirculated air 
mode switch to outside air mode if 
the recirculated air mode is used. (It 
may switch automatically.)
To defog the windshield and the 
side windows quickly, turn the air 
flow and temperature up.
To return to the previous mode, 
press the windshield defogger 
switch again when the windshield is 
defogged.
When the windshield defogger 
switch is on, the indicator illumi-
nates on the windshield defogger 
switch.
■Defogging the rear window 
and outside rear view mir-
rors
Defoggers are used to defog the 
rear window, and to remove 
raindrops, dew and frost from 
the outside rear view mirrors.
Press the rear window and out-
side rear view mirror defoggers 
switch.
The defoggers will automatically 
turn off after a while.
When the rear window and outside 
rear view mirror defoggers switch is 
on, the indicator illuminates on the 
rear window and outside rear view 
mirror defoggers switch.
■Eco air conditioning mode
The air conditioning is controlled 
with low fuel consumption priori- tized such as reducing fan 
speed, etc.
Press the eco air conditioning 
mode switch.
When the eco air conditioning 
mode is on, the indicator illumi-
nates on the eco air conditioning 
mode switch.
■When the outside temperature 
exceeds 75°F (24°C) and the air 
conditioning system is on
●In order to reduce the air condi-
tioning power consumption, the air 
conditioning system may switch to 
recirculated air mode automati-
cally. This may also reduce fuel 
consumption.
●Recirculated air mode is selected 
as a default mode when the 
engine switch is turned to ON.
●It is possible to switch to outside 
air mode at any time by pressing 
the outside air mode switch.
■Fogging up of the windows
●The windows will easily fog up 
when the humidity in the vehicle is 
high. Turning “A/C” on will dehu-
midify the air from the outlets and 
defog the windshield effectively.
●If you turn “A/C” off, the windows 
may fog up more easily.
●The windows may fog up if the 
recirculated air mode is used.
■When driving on dusty roads
Close all windows. If dust thrown up 
by the vehicle is still drawn into the 
vehicle after closing the windows, it 
is recommended that the air intake 
mode be set to outside air mode and 
the fan speed to any setting except 
off.
■Outside/recirculated air mode
●Setting to the recirculated air 
mode temporarily is recom-
mended in preventing dirty air  
Page 396 of 576

3966-1. Using the air conditioning system and defogger
COROLLA H/B_Ufrom entering the vehicle interior 
and helping to cool the vehicle 
when the outside air temperature 
is high.
●Outside/recirculated air mode may 
automatically switch depending on 
the temperature setting or the 
inside temperature.
■Operation of the air condition-
ing system in Eco air condition-
ing mode
●In Eco air conditioning mode, the 
air conditioning system is con-
trolled as follows to prioritize fuel 
efficiency:
• Heater and compressor operation  controlled to restrict heating/cool-
ing capacity
• Fan speed restricted when auto- matic mode is selected
●To improve air conditioning perfor-
mance, perform the following 
operations:
• Turn off eco air conditioning mode  ( P.395)
• Adjust the fan speed
■When the outside temperature 
falls to nearly 32°F (0°C)
The dehumidification function may 
not operate even when “A/C” switch 
is pressed.
■Ventilation and air conditioning 
odors
●To let fresh air in, set the air condi-
tioning system to the outside air 
mode.
●During use, various odors from 
inside and outside the vehicle may 
enter into and accumulate in the 
air conditioning system. This may 
then cause odor to be emitted 
from the vents.
●To reduce potential odors from 
occurring:
• It is recommended that the air 
conditioning system be set to out-
side air mode prio r to turning the 
vehicle off.
• The start timing of the blower may  be delayed for a short period of  time immediately after the air con-
ditioning system is started in auto-
matic mode.
●When parking, the system auto-
matically switches to outside air 
mode to encourage better air cir-
culation throughout the vehicle, 
helping to reduce odors that occur 
when starting the vehicle.
■Air conditioning filter
 P.454
■Air conditioning system refrig-
erant
●A label regarding the refrigerant of 
the air conditioning system is 
attached to the hood at the loca-
tion shown in th e following illustra-
tion.
●The meaning of each symbol on 
the label are as follows:
■Customization
Some functions can be customized. 
Caution
Air conditioning sys-
tem
Air conditioning sys-
tem lubricant type
Requires registered 
technician to service 
air conditioning sys-
tem
Flammable refrigerant 
Page 397 of 576

3976-1. Using the air conditioning system and defogger
COROLLA H/B_U
6
Interior features
(  P.535)
1 Press the automatic mode 
switch.
2 Adjust the temperature set-
ting.
3 To stop the operation, press 
the off switch. If the fan speed setting or air 
flow modes are operated, the 
automatic mode indicator goes 
off. However, automatic mode 
for functions other than that 
operated is maintained.
■Using automatic mode
Fan speed is adjusted automati-
cally according to the temperature 
setting and the ambient conditions.
Therefore, the fan may stop for a 
while until warm or cool air is ready 
to flow immediately after the auto-
matic mode switch pressed.
Prevent ice from building up on 
the windshield and wiper 
blades.
When the windshield wiper de-icer 
switch is on, the indicator illumi-
nates on the windshield wiper 
de-icer switch.
The windshield wiper de-icer will 
automatically turn off after a period 
of time.
WARNING
■To prevent the windshield 
from fogging up
Do not use the windshield defog-
ger switch during cool air opera-
tion in extremely humid weather. 
The difference between the tem-
perature of the outside air and 
that of the windshield can cause 
the outer surface of the wind-
shield to fog up, blocking your 
vision.
■When the outside rear view 
mirror defoggers are operat-
ing
Do not touch the outside rear view 
mirror surfaces, as they can 
become very hot and burn you.
NOTICE
■To prevent battery discharge
Do not leave the air conditioning 
system on longer than necessary 
when the engine is off.
■When repairing/replacing 
parts of the air conditioning 
system
Have repair/replacement per-
formed by your  Toyota dealer.
When a part of the air conditioning 
system, such as the evaporator, is 
to be replaced, it must be 
replaced with a new one.
Using automatic mode
Windshield wiper de-icer 
(if equipped) 
Page 420 of 576

4207-1. Maintenance and care
COROLLA H/B_U
7-1.Maintenance and care
Working from top to bottom, 
liberally apply water to the 
vehicle body, wheel wells and 
underside of the vehicle to 
remove any dirt and dust.
 Wash the vehicle body using 
a sponge or soft cloth, such 
as a chamois.
 For hard-to-remove marks, 
use car wash soap and rinse 
thoroughly with water.
 Wipe away any water.
 Wax the vehicle when the 
waterproof coating deterio-
rates.
If water does not bead on a clean 
surface, apply wax when the vehi-
cle body is cool.
■Automatic car washes
●Fold the mirrors before washing 
the vehicle. Start washing from the 
front of the vehicle. Make sure to 
extend the mirrors before driving.
●Brushes used in automatic car 
washes may scratch the vehicle 
surface, parts (wheel, etc.) and 
harm your vehicle’s paint.
●In certain automatic car washes, 
the rear spoiler may interfere with  machine operation. This may pre-
vent the vehicle from being 
cleaned properly or result in dam-
age to the rear spoiler.
■High pressure car washes
As water may enter the cabin, do 
not bring the nozzle tip near the 
gaps around the doors or perimeter 
of the windows, or spray these 
areas continuously.
■When using a car wash
If the door handle becomes wet 
while the electronic key is within the 
effective range, the door may lock 
and unlock repeatedly. In that case, 
follow the following correction pro-
cedures to wash the vehicle:
●Place the key in a position 6 ft. (2 
m) or more separate from the 
vehicle while the vehicle is being 
washed. (Take care to ensure that 
the key is not stolen.)
●Set the electronic key to bat-
tery-saving mode to disable the 
smart key system. ( P.109)
■Wheels and wheel ornaments
●Remove any dirt immediately by 
using a neutral detergent.
●Wash detergent off with water 
immediately after use.
●To protect the paint from damage, 
make sure to observe the follow-
ing precautions.
• Do not use acidic, alkaline or  abrasive detergent
• Do not use hard brushes
• Do not use detergent on the  wheels when they are hot, such 
as after driving or parking in hot 
weather
■Bumpers
Do not scrub with abrasive cleaners.
■Plated portions
If dirt cannot be removed, clean the 
parts as follows:
●Use a soft cloth dampened with an 
approximately 5% solution of neu-
Cleaning and protect-
ing the vehicle exte-
rior
Perform cleaning in a man-
ner appropriate to each 
component and its material.
Cleaning instructions 
Page 440 of 576

4407-3. Do-it-yourself maintenance
COROLLA H/B_U
Terminals
Hold-down clamp
■Before recharging
When recharging, the battery pro-
duces hydrogen gas which is flam-
mable and explosive. Therefore, 
observe the following precautions 
before recharging:
●If recharging with the battery 
installed on the vehicle, be sure to 
disconnect the ground cable.
●Make sure the charger is off when 
connecting and disconnecting the 
charger cables to the battery.
■After recharging/reconnecting 
the battery
●Unlocking the doors using the 
smart key system may not be pos-
sible immediately after reconnect-
ing the battery. If this happens, 
use the wireless remote control or 
the mechanical key to lock/unlock 
the doors.
●Start the engine with the engine 
switch in ACC. The engine may 
not start with the engine switch 
turned off. However, the engine 
will operate normally from the sec-
ond attempt.
●The engine switch mode is 
recorded by the vehicle. If the bat-
tery is reconnected, the vehicle 
will return the engi ne switch mode 
to the status it was in before the 
battery was disconnected. Make 
sure to turn off the engine before 
disconnecting the battery. Take  extra care when connecting the 
battery if the engine switch mode 
prior to discharge is unknown.
If the system will no t start even after 
multiple attempts,  contact your Toy-
ota dealer.
WARNING
■Chemicals in the battery
The battery contains poisonous 
and corrosive sulfuric acid and 
may produce hydrogen gas which 
is flammable and explosive. To 
reduce the risk of death or serious 
injury, take the following precau-
tions while working on or near the 
battery:
●Do not cause sparks by touch-
ing the battery  terminals with 
tools.
●Do not smoke or light a match 
near the battery.
●Avoid contact with eyes, skin 
and clothes.
●Never inhale or swallow electro-
lyte.
●Wear protective safety glasses 
when working near the battery.
●Keep children away from the 
battery.
■Where to safely charge the 
battery
Always charge the battery in an 
open area. Do not charge the bat-
tery in a garage or closed room 
where there is insufficient ventila-
tion. 
Page 444 of 576

4447-3. Do-it-yourself maintenance
COROLLA H/B_Utires also have radial construction. 
Do not install studded tires without 
first checking local regulations for 
possible restrictions. Snow tires 
should be installed on all wheels. 
(
 P.251)
■If the tread on snow tires wears 
down below 0.16 in. (4 mm)
The effectiveness of the tires as 
snow tires is lost.
■Checking the tire valves
When replacing the tires, check the 
tire valves for deformation, cracks, 
and other damage.
Rotate the tires in the order 
shown.
WARNING
■When inspecting or replacing 
tires
Observe the following precautions 
to prevent accidents.
Failure to do so may cause dam-
age to parts of the drive train as 
well as dangerous handling char-
acteristics, which may lead to an 
accident resulting in death or seri-
ous injury.
●Do not mix tires of different 
makes, models or tread pat-
terns.
Also, do not mix tires of remark-
ably different treadwear.
●Do not use tire sizes other than 
those recommended by Toyota.
●Do not mix differently con-
structed tires (radial, bias-belted 
or bias-ply tires).
●Do not mix summer, all season 
and snow tires.
●Do not use tires that have been 
used on another vehicle.
Do not use tires if you do not 
know how they were used previ-
ously.
NOTICE
■Low profile tires (18-inch 
tires)
Low profile tires may cause 
greater damage than usual to the 
tire wheel when sustaining impact 
from the road surface. Therefore, 
pay attention to the following:
●Be sure to use proper tire infla-
tion pressure. If tires are 
under-inflated, they may be 
damaged more severely.
●Avoid potholes, uneven pave-
ment, curbs and other road haz-
ards. Failure to do so may lead 
to severe tire and wheel dam-
age.
■If tire inflation pressure of 
each tire becomes low while 
driving
Do not continue driving, or your 
tires and/or wheels may be 
ruined.
■Driving on rough roads
Take particular care when driving 
on roads with loose surfaces or 
potholes.
These conditions may cause 
losses in tire in flation pressure, 
reducing the cushioning ability of 
the tires. In addition, driving on 
rough roads may cause damage 
to the tires themselves, as well as 
the vehicle’s wheels and body.
Tire rotation 
Page 506 of 576

5068-2. Steps to take in an emergency
COROLLA H/B_UACC.
3
Firmly depress the brake 
pedal (continuously variable 
transmission) or clutch pedal 
(manual transmission) and 
check that   is shown on 
the multi-information display.
4 Press the engine switch 
shortly and firmly.
In the event that the engine still 
cannot be started, contact your 
Toyota dealer.
■Stopping the engine
Shift the shift lever to P (continu-
ously variable transmission) or N 
(manual transmission) and press 
the engine switch as you normally 
do when stopping the engine.
■Electronic key battery
As the above procedure is a tempo-
rary measure, it is recommended 
that the electronic key battery be 
replaced immediately when the bat-
tery is depleted. ( P.456)
■Changing engine switch modes
Release the brake pedal (continu-
ously variable transmission) or 
clutch pedal (manual transmission) 
and press the engine switch in step 
3  above.
The engine does not start and 
modes will be changed each time 
the switch is pressed. ( P.145)
If  the vehicle batter y 
is discharged
The following procedures 
may be used to start the 
engine if the vehicle’s bat-
tery is discharged.
You can also call your Toy-
ota dealer or a qualified 
repair shop. 
Page 508 of 576

5088-2. Steps to take in an emergency
COROLLA H/B_U
recharge the battery of your 
vehicle.
5 Open and close any of the 
doors of your vehicle with the 
engine switch OFF.
6 Maintain the engine speed of 
the second vehicle and start 
the engine of your vehicle by 
turning the engine switch to 
ON.
7 Once the vehicle’s engine 
has started, remove the 
jumper cables in the exact 
reverse order from which 
they were connected.
Once the engine starts, have the 
vehicle inspected at your Toyota 
dealer as soon as possible.
■Starting the engine when the 
battery is discharged
The engine cannot be started by 
push-starting.
■To prevent battery discharge
●Turn off the headlights and the 
audio system while the engine is 
off.
●Turn off any unnecessary electri-
cal components when the vehicle 
is running at a low speed for an 
extended period, such as in heavy 
traffic.
■When the battery is removed or 
discharged
●Information stored in the ECU is 
cleared. When the battery is 
depleted, have the vehicle 
inspected at your Toyota dealer.
●Some systems may  require initial-
ization. ( P.543)
■When removing the battery ter-
minals
When the battery terminals are 
removed, the information stored in 
the ECU is cleared. Before remov-
ing the battery te rminals, contact 
your Toyota dealer.
■Charging the battery
The electricity stored in the battery 
will discharge gradually even when 
the vehicle is not in use, due to nat-
ural discharge and the draining 
effects of certain electrical appli-
ances. If the vehicle is left for a long 
time, the battery may discharge, 
and the engine may be unable to 
start. (The battery recharges auto-
matically during driving.)
■When recharging or replacing 
the battery
●In some cases, it may not be pos-
sible to unlock the doors using the 
smart key system when the bat-
tery is discharged. Use the wire-
less remote control or the 
mechanical key to lock or unlock 
the doors.
●The engine may not start on the 
first attempt after the battery has 
recharged but will start normally 
after the second attempt. This is 
not a malfunction.
●The engine switch mode is memo-
rized by the vehicle. When the 
battery is reconnected, the system 
will return to the  mode it was in 
before the battery was dis-
charged. Before disconnecting the 
battery, turn the engine switch off.
If you are unsure what mode the 
engine switch was in before the 
battery discharged, be especially 
careful when reconnecting the 
battery.
■When replacing the battery
●Use a battery that conforms to 
European regulations.
●Use a battery that the case size is 
same as the previous one (LN2), 
20 hour rate capacity (20HR) is  
Page 539 of 576

5399-2. Customization
COROLLA H/B_U
9
Vehicle specifications
■Power windows ( P.125)
■Automatic light control system ( P.160)
■Lights (P.160)
Theft deterrent panic 
modeOnOff——O
Locking operation when 
door openedOnOffO—O
FunctionDefault settingCustomized setting
Mechanical key linked 
operationOffOn——O
Wireless remote control 
linked operationOffOn (open only)——O
Wireless remote control 
linked operation signal 
(buzzer)
OnOff——O
FunctionDefault settingCustomized setting
Light sensor sensitivityStandard-2 to 2O—O
Time elapsed before 
headlights automatically 
turn off after doors are 
closed
30 seconds
Off
O—O60 seconds
90 seconds
Windshield wiper linked 
headlight illuminationOnOff——O
FunctionDefault settingCustomized setting
Daytime running light 
systemOnOffO—O
FunctionDefault settingCustomized setting