stop start TOYOTA COROLLA HYBRID 2020 (in English) Service Manual

4908-2. Steps to take in an emergency
COROLLA HV_U
sides.
If you do not see steam:
Carefully lift the hood.
3 After the hybrid system has
cooled down sufficiently,
inspect the hoses and radia-
tor core (radiator) for any
leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately cont act your Toyota
dealer.
4 The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL” line
“LOW” line
5 Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
6Start the hybrid system and
turn the air conditioning sys-
tem on to check that the radi-
ator cooling fans operate and
to check for coolant leaks
from the radiator or hoses.
The fans operate when the air con-
ditioning system is turned on imme-
diately after a cold start. Confirm
that the fans are operating by
c h e c k i n g t h e f a n s o u n d a n d a i r f l o w.
If it is difficult to check these, turn
the air conditioni ng system on and
off repeatedly. (The fans may not
operate in freezing temperatures.)
7 If the fans are not operating:
Stop the hybrid system
immediately and contact your
Toyota dealer.
If the fans are operating:
Have the vehicle inspected at
the nearest Toyota dealer.
If “Hybrid System Over-
heated Output Power
Reduced” is shown on the
multi-information display
1 Stop the vehicle in a safe
place.
2 Stop the hybrid system and
carefully lift the hood.

4918-2. Steps to take in an emergency
COROLLA HV_U
8
When trouble arises
3 After the hybrid system has
cooled down, inspect the
hoses and radiator core (radi-
ator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately cont act your Toyota
dealer.
4 The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL” line
“LOW” line
5 Add coolant if necessary.
Water can be used in an emer- gency if coolant is unavailable.
6
After stopping the hybrid sys-
tem and waiting for 5 minutes
or more, start the hybrid sys-
tem again and check for the
multi-information display.
If the message does not dis-
appear: Stop the hybrid sys-
tem and contact your Toyota
dealer.
If the message is not dis-
played: The hybrid system
temperature has dropped
and the vehicle may be
driven normally.
However, if the m essage appears
again frequently, contact your Toy-
ota dealer.
WA R N I N G
■When inspecting under the
hood of your vehicle
Observe the following precau-
tions. Failure to do so may result
in serious injury such as burns.
●If steam is seen coming from
under the hood, do not open the
hood until the steam has sub-
sided. The engine compart-
ment may be very hot.

4928-2. Steps to take in an emergency
COROLLA HV_U
1Stop the hybrid system. Set
the parking brake and shift
the shift lever to P.
2 Remove the mud, snow or
sand from around the front
wheels.
3 Place wood, stones or some
other material under the front
wheels to help provide trac-
tion.
4 Restart the hybrid system.
5 Shift the shift lever to D or R
and release the parking
brake. Then, while exercising
caution, depress the acceler-
ator pedal.
■When it is difficult to free the
vehicle
Press the switch to turn off
TRAC.
WA R N I N G
●After the hybrid system has
been turned off, check that the
“READY” indicator is off. When
the hybrid system is operating,
the gasoline en gine may auto-
matically start, o r the cooling
fans may suddenly operate
even if the gasoline engine
stops. Do not touch or approach
rotating parts such as the fan,
which may lead to fingers or
clothing (especially a tie, a scarf
or a muffler) getting caught,
resulting in serious injury.
●Do not loosen the coolant reser-
voir caps while the hybrid sys-
tem and radiator are hot.
High temperature steam or
coolant could spray out.
NOTICE
■When adding engine/power
control unit coolant
Add coolant slowly after the
hybrid system has cooled down
sufficiently. Adding cool coolant to
a hot hybrid system too quickly
can cause damage to the hybrid
system.
■To prevent damage to the
cooling system
Observe the following precau-
tions:
●Avoid contaminating the coolant
with foreign matter (such as
sand or dust etc.).
●Do not use any coolant additive.
If the vehicle becomes
stuck
Carry out the following pro-
cedures if the tires spin or
the vehicle becomes stuck
in mud, dirt or snow:
Recovering procedure

5371-1. What to do if... (Troubleshooting)
COROLLA HV_U537What to do if... (Troubleshooting)
 Is the power switch in ON?
If you cannot release the shift lever
by depressing the brake pedal with
the power switch in ON. ( 
P.150)
It is locked automatically to
prevent theft of the vehicle.
( P.144)
 Is the window lock switch
pressed?
The power window except for the
one at the driver’s seat cannot be
operated if the win dow lock switch
is pressed. ( 
P.129)
The auto power off function
will be operated if the vehicle
is left in ACC or ON (the
hybrid system is not operat-
ing) for a period of time.
( P.146)
 The seat belt reminder light is flashing
Are the driver and the passenger
wearing the seat belts? (

P. 4 5 3)
The parking brake indicator is
on
Is the parking br ake released?
( 
P.153)
Depending on the situation,
other types of warning buzzer
may also sound. ( P.450, 459)
 Did anyone inside the vehicle
open a door during setting the
alarm?
The sensor detects it and the alarm
sounds. ( 
P. 7 7)
Do one of the following to deac-
tivate or stop the alarms:
Unlock the doors.
 Turn the power switch to ACC
or ON, or start the hybrid sys-
tem. (The alarm will be deacti-
vated or stopped after a few
seconds.)
 Is the electronic key left inside
the vehicle?
Check the message on the
multi-informat ion display. (
P.459)
The shift lever cannot be
shifted from P even if you
depress the brake pedal
The steering wheel can-
not be turned after the
hybrid system is stopped
The windows do not open
or close by operating the
power window switches
The power switch is
turned off automatically
A warning buzzer sounds
during driving
An alarm is activated and
the horn sounds
A warning buzzer sounds
when leaving the vehicle

542Alphabetical Index
COROLLA HV_U
Dynamic radar cruise control with full-speed range ........... 192Warning message ................ 201
E
ECB (Electronically Controlled Brake System) ...................... 220
ECO Accelerator Guidance ..... 91
Eco score .................................. 91
EDR (Event data recorder)......... 8
Elapsed time ............................. 93
Electric motor (traction motor)68
Electric Power Steering (EPS) ............................................... 221Warning light ........................ 453
Electronic key ......................... 102 Battery-saving fun ction......... 112
If the electronic key does not operate properly ................. 483
Replacing the battery ........... 431
Electronically Controlled Brake System (ECB) ....................... 220
Emergency flashers ............... 442
Emergency tire puncture repair kit ........................................... 462
Emergency, in case of If a warning buzzer sounds .. 450
If a warning light turns on ..... 450
If a warning message is dis-played................................. 459
If the 12-volt battery is dis- charged .............................. 485
If the electronic key does not operate properly ................. 483
If the fuel filler door cannot be opened ............................... 483
If the hybrid sy stem will not start
........................................... 481
If the vehicle is trapped in rising water .................................. 444
If you have a fla t tire ..... 462, 473
If you lose your keys ............ 482 If you think something is wrong
...........................................448
If your vehicle becomes stuck ...........................................492
If your vehicle has to be stopped in an emergency .................443
If your vehicle needs to be towed ...........................................445
If your vehicle ove rheats ......489
Energy monitor .........................95
Enform App Suite button (Setup screen) ...................................238
Engine ACCESSORY mode . ............145
Compartment........................406
Engine switch .......................143
Hood .....................................404
How to start the hybrid system ...........................................143
Identification number ............497
If the hybrid sys tem will not start
...........................................481
If your vehicle has to be stopped in an emergency .................443
Ignition switch (power switch) ...........................................143
Overheating ..........................489
Power switch ........................143
Tachometer.............................84
Engine coolant Capacity ...............................499
Checking ..............................408
Preparing and checking before winter ..................................228
Engine coolant temperature gauge .......................................84
Engine oil Capacity ...............................498
Checking ..............................406
Preparing and checking before winter ..................................228
Warning light.........................451

544Alphabetical Index
COROLLA HV_U
Headlights/daytime running lightsReplacing light bulbs ............ 436
Heated steering wheel ........... 365
Heaters Automatic air conditioning sys-tem ..................................... 358
Heated steering wheel ......... 365
Outside rear view mirrors ..... 359
Seat heaters ......................... 365
High mounted stoplight Replacing light bulbs ............ 436
High-voltage components ....... 71
Hill-start assist control .......... 221
HOME button .......................... 242
Home screen ........................... 242
Hood Open .................................... 404
Hooks Coat hooks ........................... 382
Retaining hooks (floor mat) .... 24
Horn ......................................... 123
Hybrid battery (tr action battery)
Location.................................. 71
Specification ......................... 497
Warning message .................. 74
Hybrid battery (traction battery) air intake vent ....................... 427
Hybrid battery (traction battery) air vents .................................. 73
Hybrid system .......................... 68 Emergency shut off system .... 74
Energy monitor/consumption screen .................................. 95
EV drive mode...................... 147
High voltage components....... 71
Hybrid system precautions ..... 71
If the hybrid sy stem will not start
........................................... 481
Overheating.......................... 490
Power (ignition) switch ......... 143
Regenerative braking ............. 69 Starting the hybrid system ....143
Hybrid System Indicator ..........91
Hybrid transmissio n ...............149
Hybrid vehicle dri ving tips.....226
I
I/M test .....................................401
Identification
Engine ..................................497
Vehicle ..................................496
Ignition switch (power switch) ...............................................143Auto power off fun ction .........146
Changing the power switch modes.................................145
If your vehicle has to be stopped in an emergency .................443
Illuminated entry system .......368
Immobilizer system ..................75
Indicators ..................................82
Info button (Menu screen) .....235
Initial screen............................239 Caution screen .....................239
Restarting the system ...........239
Initialization Items to initialize ...................524
Maintenance .........................398
Power windows ....................127
Tire pressure w arning system
...........................................419
Inside rear view m irror ...........124
Instrument panel light control .87
Interior lights...........................367 Front interior light .................367
Rear interior light ..................367
Wattage ................................502
Internet radio...........................281
iPod/iPhone .............................285

5491-1. What to do if... (Troubleshooting)
COROLLA HV_U549Alphabetical Index
BSM (Blind Sport Monitor) ... 205
Folding ................................. 126
Side turn signal lights Replacing light bulbs ............ 436
Turn signal lever ................... 152
Side windows ...... ................... 127
Smart key system Antenna location .................. 111
Entry functions ..................... 105
Starting the hybrid system.... 143
Snow tires ............................... 228
Spare tire ................................. 473 Inflation pressure.................. 501
Storage location ................... 474
Spark plug ............................... 499
Specifications ......................... 496
Speedometer ............................ 84
Status icon .............................. 236 Status icon explanation ........ 236
Steering lock Column lock release............. 144
Steering lock system warning message............................. 144
Steering switch ............... 293, 308 Audio switch ......................... 293
Talk switch ............................ 308
Steering wheel Adjustment ........................... 123
Heated steering wheel ......... 365
Meter control switches ........... 89
Stop lights Replacing light bulbs ............ 436
Storage features ..................... 369
Stuck If the vehicle becomes stuck 492
Sun visors ............................... 381
Switches Automatic High Beam system........................................... 160
Brake Hold switch ................ 156
Display change button............ 86
Door lock switches ............... 107 Driving mode select switch ...219
Dynamic radar cruise control
with full-speed range switch192
Emergency flashers switch...442
EV drive mode switch ...........147
Garage door opener switches ...........................................383
Heated steering wheel switch ...........................................365
Ignition switch .......................143
Instrument panel light control switches................................87
Light switches .......................158
LTA (Lane-Tracing Assist) switch ...........................................187
Meter control switches............89
Outside rear v iew mirror
switches..............................125
Parking brake switch ............153
Power door lock switch.........107
Power switch ........................143
Power window switches .......127
Rear window and outside rear view mirror defoggers switch...........................................358
Seat heater switches ............365
“SOS” button ..........................62
Vehicle-to-vehicle distance switch .................................192
VSC OFF switch ...................221
Window lock switch ..............129
Windshield wiper and washer switch .................................163
T
Tachometer ...............................84
Tail lights Light switch...........................158
Replacing light bulbs ............436
Talking on the Bluetooth
®
hands-free system ................326 Call screen operation ...........326