
2474-5. Using the driving support systems
COROLLA_U
4
Driving
SymptomLikely causeSolution
The image is difficult to 
see
 The vehicle is in a dark 
area
 The temperature 
around the lens is 
either high or low
 The outside tempera-
ture is low
 There are water drop-
lets on the camera
 It is raining or humid
 Foreign matter (mud 
etc.) is adhering to the 
camera
 Sunlight or headlights 
are shining directly 
into the camera
 The vehicle is under 
fluorescent lights, 
sodium lights, mer-
cury lights etc.
If this happens due to 
these causes, it does 
not indicate a malfunc-
tion. Back up while visu-
ally checking the 
vehicle’s surroundings. 
(Use the monitor again 
once conditions have 
been improved.) The 
procedure for adjusting 
the picture quality of the 
rear view monitor sys-
tem is the same as the 
procedure for adjusting 
the screen. ( P.274)
The image is blurry
Dirt or foreign matter 
(such as water droplets, 
snow, mud etc.) is 
adhering to the camera.Flush the camera with a 
large quantity of water 
and wipe the camera 
lens clean with a soft 
and wet cloth.
The image is out of 
alignment
The camera or sur-
rounding area has 
received a strong 
impact.Have the vehicle 
inspected by your Toy-
ota dealer.
The fixed guide lines 
are very far out of 
alignment
The camera position is 
out of alignment.Have the vehicle 
inspected by your Toy-
ota dealer.
The vehicle is tilted 
(there is a heavy load 
on the vehicle, tire 
pressure is low due to 
a tire puncture, etc.)
 The vehicle is used on 
an incline.If this happens due to 
these causes, it does 
not indicate a malfunc-
tion.
Back up while visually 
checking the vehicle’s 
surroundings. 

2544-5. Using the driving support systems
COROLLA_U
WARNING
●When driving with tire chains
●When driving over bumps in the 
road
●When driving over roads with 
potholes or uneven surfaces
■TRAC/VSC may not operate 
effectively when
Directional control and power may 
not be achievable while driving on 
slippery road surfaces, even if the 
TRAC/VSC system is operating. 
Drive the vehicle carefully in con-
ditions where stability and power 
may be lost.
■Active Cornering Assist does 
not operate effectively when
●Do not overly rely on Active 
Cornering Assist. Active  Corner-
ing Assist may not operate 
effectively when accelerating 
down slopes or driving on slip-
pery road surfaces.
●When Active  Cornering Assist 
frequently  operates, Active  Cor-
nering Assist may temporarily 
stop operating to ensure proper 
operation of the brakes, TRAC 
and VSC.
■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 effec-
tively on steep inclines and 
roads covered with ice.
●Unlike the parking brake, 
hill-start assist  control is not 
intended to hold the vehicle sta-
tionary for an extended period 
of time. Do not attempt to use 
hill-start assist  control to hold 
the vehicle on an incline, as 
doing so may lead to an acci-
dent.
■When the TRAC/VSC is acti-
vated
The slip indicato r light flashes. 
Always drive carefully. Reckless 
driving may cause an accident. 
Exercise particular care when the 
indicator light flashes.
■When the TRAC/VSC systems 
are turned off
Be especially careful and drive at 
a speed appropriate to the road 
conditions. As these are the sys-
tems to help ensure vehicle stabil-
ity and driving force, do not turn 
the TRAC/VSC systems off 
unless necessary.
■Replacing tires
Make sure that all tires are of the 
specified size, brand, tread pat-
tern and total load capacity. In 
addition, make sure that the tires 
are inflated to the recommended 
tire inflation pressure level.
The ABS, TRAC and VSC sys-
tems will not function correctly if 
different tires are installed on the 
vehicle.
Contact your Toyota dealer for fur-
ther information when replacing 
tires or wheels.
■Handling of tires and the sus-
pension
Using tires with any kind of prob-
lem or modifying the suspension 
will affect the driving assist sys-
tems, and may cause a system to 
malfunction.
■Secondary Collision Brake
Do not rely solely upon the Sec-
ondary Collision Brake. This sys-
tem is designed to help reduce 
the possibility of further damage 
due to a secondary collision, how-
ever, that effect  changes accord-
ing to various conditions. Overly 
relying on the system may result 
in death or serious injury. 

2554-6. Driving tips
COROLLA_U
4
Driving
4-6.Driving tips
 Use fluids that are appropriate 
to the prevailing outside tem-
peratures.
• Engine oil
• Engine coolant
• Washer fluid
Have a service technician 
inspect the condition of the 
battery.
 Have the vehicle fitted with 
four snow tires or purchase a 
set of tire chains for the front 
tires.
Ensure that all tires are the same 
size and brand, and that chains 
match the size of the tires.
Winter driving tips
Carry out the necessary 
preparations and inspec-
tions before driving the 
vehicle in winter. Always 
drive the vehicle in a man-
ner appropriate to the pre-
vailing weather conditions.
Pre-winter preparations
WARNING
■Driving with snow tires
Observe the following precautions 
to reduce the risk of accidents.
Failure to do so may result in a 
loss of vehicle control and cause 
death or serious injury.
●Use tires of the size specified.
●Maintain the recommended 
level of air pressure.
●Do not drive in excess of 75 
mph (120 km/h), regardless of 
the type of snow tires being 
used.
●Use snow tires on all, not just 
some wheels.
■Driving with tire chains
Observe the following precautions 
to reduce the risk of accidents.
Failure to do so may result in the 
vehicle being unable to be driven 
safely, and may cause death or 
serious injury.
●Do not drive in excess of the 
speed limit specified for the tire 
chains being used, or 30 mph 
(50 km/h), whichever is lower.
●Avoid driving on bumpy road 
surfaces or over potholes.
●Avoid sudden acceleration, 
abrupt steering, sudden brak-
ing and shifting operations that 
cause sudden engine braking.
●Slow down sufficiently before 
entering a curve to ensure that 
vehicle control is maintained.
●Do not use LTA (Lane Tracing 
Assist) system. (if equipped)
●Do not use LDA (Lane Depar-
ture Alert with steering control) 
system. (if equipped)
NOTICE
■Repairing or replacing snow 
tires (vehicles with a tire pres-
sure warning system)
Request repairs or replacement of 
snow tires from Toyota dealers or 
legitimate tire retailers.
This is because the removal and 
attachment of snow tires affects 
the operation of the tire pressure 
warning valves and transmitters. 
![TOYOTA COROLLA 2020  Owners Manual (in English) 2574-6. Driving tips
COROLLA_U
4
Driving
Side chain (0.12 in. [3 mm] in 
diameter)
Side chain (0.39 in. [10 mm] 
in width)
Side chain (1.18 in. [30 mm] 
in length)
Cross chain (0.16 in. [4 mm] 
in dia TOYOTA COROLLA 2020  Owners Manual (in English) 2574-6. Driving tips
COROLLA_U
4
Driving
Side chain (0.12 in. [3 mm] in 
diameter)
Side chain (0.39 in. [10 mm] 
in width)
Side chain (1.18 in. [30 mm] 
in length)
Cross chain (0.16 in. [4 mm] 
in dia](/manual-img/14/42488/w960_42488-256.png)
2574-6. Driving tips
COROLLA_U
4
Driving
Side chain (0.12 in. [3 mm] in 
diameter)
Side chain (0.39 in. [10 mm] 
in width)
Side chain (1.18 in. [30 mm] 
in length)
Cross chain (0.16 in. [4 mm] 
in diameter)
Cross chain (0.55 in. [14 mm] 
in width)
Cross chain (0.98 in. [25 mm] 
in length)
Regulations regarding the use 
of tire chains vary depending on 
location and type of road. 
Always check local regulations 
before installing chains.
■Tire chain installation
Observe the following precautions 
when installing and removing 
chains:
●Install and remove tire chains in a 
safe location.
●Install tire chains on the front tires 
only. Do not install tire chains on 
the rear tires.
●Install tire chains on the front tires 
as tightly as possible. Retighten 
chains after driving 1/4 1/2 mile 
(0.5 1.0 km).
●Install tire chains following the 
instructions provid ed with the tire 
chains.
Regulations on the use of 
tire chains
NOTICE
■Fitting tire chains (vehicles 
with a tire pressure warning 
system)
The tire pressure warning valves 
and transmitters may not function 
correctly when tire chains are fit-
ted. 

421
COROLLA_U
7
7
Maintenance and care
Maintenance and care
.7-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 422
Cleaning and protecting the  vehicle interior ........... 424
7-2. Maintenance Maintenance requirements.................................. 427
General maintenance.. 428
Emission inspection and  maintenance (I/M) pro-
grams ........................ 431
7-3. Do-it-yourself mainte- nance
Do-it-yourself service pre- cautions ..................... 432
Hood ........................... 434
Positioning a floor jack .................................. 435
Engine compartment ... 436
Tires ............................ 444
Tire inflation pressure.. 453
Wheels ......... ...............455
Air conditioning filter .... 457
Wireless remote con- trol/electronic key battery.................................. 458
Checking and replacing  fuses.......................... 461
Light bulbs................... 464 

4307-2. Maintenance
COROLLA_U
Parking brake
• Does the park-ing brake oper-
ate normally?
• When parked on  a slope and the 
parking brake is 
on, is the vehicle 
securely 
stopped?
Seat belts
• Do the seat belts operate 
smoothly?
• The seat belts  should not be 
damaged.
Seats
Do the seat con-
trols operate prop-
erly?
Steering wheel
• Does the steer-ing wheel rotate 
smoothly?
• Does the steer- ing wheel have 
the correct 
amount of free 
play?
• There should not  be any strange 
sounds coming 
from the steer-
ing wheel.
Vehicle exterior
ItemsCheck points
Doors/trunkDo the doors/trunk 
operate smoothly?
Engine hood
Does the engine 
hood lock system 
work properly?
ItemsCheck points
Fluid leaks
There should not 
be any signs of 
fluid leakage after 
the vehicle has 
been parked.
Tires
• Is the tire infla-tion pressure 
correct?
• The tires should  not be damaged 
or excessively 
worn.
• Have the tires  been rotated 
according to the 
maintenance 
schedule?
• The wheel nuts  should not be 
loose.
Windshield 
wipers
• The wiper blades should not show 
any signs of 
cracking, split-
ting, wear, con-
tamination or 
deformation.
• The wiper blades  should clear the 
windshield with-
out streaking or 
skipping.
ItemsCheck points 

4337-3. Do-it-yourself maintenance
COROLLA_U
7
Maintenance and care
Radiator 
and con-
denser 
(  P.440)
Tire infla-
tion pres-
sure 
( P.453)• Tire pressure gauge
• Compressed air 
source
Washer 
fluid 
( P.443)
• Water or washer 
fluid containing anti-
freeze (for winter 
use)
• Funnel (used only  for adding water or 
washer fluid)
WARNING
The engine compartment contains 
many mechanisms and fluids that 
may move suddenly, become hot, 
or become electrically energized. 
To avoid death or serious injury, 
observe the following precautions.
■When working on the engine 
compartment
●Keep hands, clothing and tools 
away from the moving fan and 
engine drive belt.
●Be careful not to touch the 
engine, radiator, exhaust mani-
fold, etc. right after driving as 
they may be hot. Oil and other 
fluids may also be hot.
●Do not leave anything that may 
burn easily, such as paper and 
rags, in the engine compart-
ment.
●Do not smoke, cause sparks or 
expose an open flame to fuel or 
the battery. Fuel and battery 
fumes are flammable.
ItemsParts and tools●Be extremely cautious when 
working on the battery. It con-
tains poisonous and corrosive 
sulfuric acid.
■When working near the elec-
tric cooling fan or radiator 
grille
Be sure the engine switch is OFF.
With the engine switch in ON, the 
electric cooling fan may automati-
cally start to run if the air condi-
tioning is on and/or the coolant 
temperature is high. ( P.440)
■Safety glasses
Wear safety glasses to prevent 
flying or falling material, fluid 
spray, etc. from getting in your 
eyes.
NOTICE
■If you remove the air cleaner 
filter
Driving with the air cleaner filter 
removed may cause excessive 
engine wear due to dirt in the air. 

4447-3. Do-it-yourself maintenance
COROLLA_U
Check if the treadwear indica-
tors are showing on the tires. 
Also check the tires for uneven 
wear, such as excessive wear 
on one side of the tread.
Check the spare tire condition 
and pressure if not rotated.New tread
Worn tread
Treadwear indicator
The location of treadwear indicators 
is shown by a “TWI” or “ ” mark, 
WARNING
■When adding washer fluid
Do not add washer fluid when the 
engine is hot or running as 
washer fluid contains alcohol and 
may catch fire if spilled on the 
engine, etc.
NOTICE
■Do not use any fluid other 
than washer fluid
Do not use soapy water or engine 
antifreeze instead of washer fluid.
Doing so may cause streaking on 
the vehicle’s painted surfaces, as 
well as damaging the pump lead-
ing to problems of the washer 
fluid not spraying.
■Diluting washer fluid
Dilute washer fluid with water as 
necessary.
Refer to the freezing tempera-
tures listed on the label of the 
washer fluid bottle.
Tires
Replace or rotate tires in 
accordance with mainte-
nance schedules and tread-
wear.
Checking tires