engine overheat TOYOTA PRIUS C 2018 Owners Manual (in English)

TABLE OF CONTENTS6
PRIUS c_U (OM52G95U)7-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 402
Cleaning and protecting the vehicle interior ........... 405
7-2. Maintenance Maintenance requirements ................... 411
General maintenance ........ 414
Emission inspection and maintenance (I/M)
programs ......................... 417
7-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 418
Hood.................................. 421
Positioning a floor jack ...... 423
Engine compartment ......... 424
12-volt battery ................... 433
Tires .................................. 437
Tire inflation pressure........ 446
Wheels .............................. 449
Air conditioning filter .......... 451
Wireless remote control/ electronic key battery ...... 453
Checking and replacing fuses ............................... 456
Light bulbs ......................... 460 8-1. Essential information
Emergency flashers ........... 470
If your vehicle has to be stopped in an
emergency....................... 471
8-2. Steps to take in an emergency
If your vehicle needs to be towed ...................... 473
If you think something is wrong............................... 480
If a warning light turns on or a warning buzzer
sounds ............................. 481
If a warning message is displayed ......................... 490
If you have a flat tire .......... 507
If the hybrid system will not start ........................... 520
If the electronic key does not operate properly ........ 522
If the vehicle 12-volt battery is discharged ....... 524
If your vehicle overheats......................... 531
If the vehicle becomes stuck ................................ 535
7Maintenance and care8When trouble arises

17Pictorial index
PRIUS c_U (OM52G95U)Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 212
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 275
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 219
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 219
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 540
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 437
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . P. 545
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 275
Checking/rotation/tire pressure warning system . . . . . . . . . P. 437
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 507
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 421
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 421
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 541
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 531
Headlights/daytime running lights . . . . . . . . . . . . . . . . . . . . P. 206
Parking lights/front turn signal lights . . . . . . . . . . . . . P. 204, 206
Side turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 204
Front fog lights
*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 210
Front side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 206
Stop lights/tail lights/rear side marker lights/
rear turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . P. 204, 206
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 200
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 206
4
5
6
7
Light bulbs of the exterior lights for driving
(Replacing method: P. 460, Watts: P. 546)
*: If equipped
8
9
10
11
12
13
14
15

1002. Instrument cluster
PRIUS c_U (OM52G95U)
NOTICE
■To prevent damage to the engine and its components
This vehicle is not installed with an engine coolant temperature gauge.
Instead, is shown on the multi-information display. The engine may
be overheating if is shown on the multi-information display. In this
case, immediately stop the vehicle in a safe place. ( →P. 531)

1734-1. Before driving
4
Driving
PRIUS c_U (OM52G95U)
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When driving the vehicle
● During normal driving, do not turn off the hybrid system. Turning the hybrid
system off while driving will not cause loss of steering or braking control,
however, power assist to the steering will be lost. This will make it more
difficult to steer smoothly, so you should pull over and stop the vehicle as
soon as it is safe to do so.
In the event of an emergency, such as if it becomes impossible to stop the
vehicle in the normal way: →P. 471
● Use engine braking (shift position B) to maintain a safe speed when driv-
ing down a steep hill.
Using the brakes continuously may cause the brakes to overheat and lose
effectiveness. ( →P. 200)
● Do not adjust the positions of the steering wheel, the seat, or the inside or
outside rear view mirrors while driving.
Doing so may result in a loss of vehicle control.
● Always check that all passengers' arms , heads or other parts of their body
are not outside the vehicle.
● Do not drive in excess of the speed limit. Even if the legal speed limit per-
mits it, do not drive over 85 mph (140 km/h) unless your vehicle has h\
igh-
speed capability tires. Driving over 85 mph (140 km/h) may result in tire
failure, loss of control and possible injury. Be sure to consult a tire dealer
to determine whether the tires on your vehicle are high-speed capability
tires or not before driving at such speeds.

1754-1. Before driving
4
Driving
PRIUS c_U (OM52G95U)
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When the vehicle is stopped
● Do not depress the accelerator pedal unnecessarily.
If the shift lever is in any position other than P or N, the vehicle may accel-
erate suddenly and unexpectedly, causing an accident.
● Do not leave the vehicle with the hybrid system on for a long time.
If such a situation cannot be avoided, park the vehicle in an open space
and check that exhaust fumes do not enter the vehicle interior.
● In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while stopped with the “READY” indicator is
illuminated, and apply the parking brake as necessary.
● If the vehicle is stopped on an incline, in order to prevent accidents 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 overheat, which could result in a fire if combusti\
ble
material is nearby.

2694-6. Using the driving support systems
4
Driving
PRIUS c_U (OM52G95U)■
ECB operating sound
ECB operating sound may be heard in the following cases, but it does not
indicate that a malfunction has occurred.
●Operating sound heard from the engine compartment when the brake pedal
is operated.
● Motor sound of the brake system heard from the front part of the vehicle
when the driver’s door is opened.
● Operating sound heard from the engine compartment when one or two min-
utes passed after the stop of the hybrid system.
■ EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be
heard. This does not indicate a malfunction.
■ Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from
overheating when there is frequent steering input over an extended period of
time. The steering wheel may feel heavy as a result. Should this occur, refrain
from excessive steering input or stop the vehicle and turn the hybrid system
off. The EPS system should return to normal within 10 minutes.
■ Electric power steering system warning light (warning buzzer)
→P. 486
■ Automatic reactivation of TRAC and VSC systems
After turning the TRAC and VSC systems off, the systems will be automati-
cally re-enabled in the following situations:
● When the power switch is turned to the “LOCK” position (vehicles without a
smart key system) or the power switch is turned off (vehicles with a smart
key system)
● If only the TRAC system is turned off, the TRAC will turn on when vehicle
speed increases
If both the TRAC and VSC systems are turned off, automatic re-enabling will
not occur when vehicle speed increases.

592Alphabetical index
PRIUS c_U (OM52G95U)
Eco drive mode ........................ 201
Electric power steering ........... 266
Electronic keyIf the electronic key does not operate properly ........... 522
Emergency flashers Switch ................................... 470
Emergency, in case of
If a warning buzzer sounds ........................ 481, 490
If a warning light
turns on .............................. 481
If a warning message is displayed ............................ 490
If the electronic key does not operate properly ........... 522
If the hybrid system will
not start .............................. 520
If the vehicle becomes stuck ................................... 535
If the vehicle 12-volt battery is discharged .......... 524
If you have a flat tire ............ 507
If you lose your keys ............. 120
If you think something is
wrong.................................. 480
If your vehicle has to
be stopped in an
emergency.......................... 471
If your vehicle needs to
be towed ............................. 473
If your vehicle overheats ....... 531 Engine
Compartment ........................ 424
Hood ..................................... 421
How to start the hybrid system ....... ................. 186, 190
Identification number ............ 539
If the hybrid system will not start .............................. 520
Ignition switch ............... 186, 190
Overheating .......................... 531
Power switch ................ 186, 190
Engine coolant Capacity................................ 542
Checking............................... 428
Preparing and checking before winter ...................... 275
Engine oil
Capacity................................ 541
Checking............................... 425
Preparing and checking before winter ...................... 275
Engine/power control unit coolant
Capacity................................ 542
Checking............................... 428
Preparing and checking before winter ...................... 275
EPS ........................................... 266
EV drive mode ......................... 197
Event data recorder................... 11
Exclusive jump starting terminal .................... 524
E

595Alphabetical index
PRIUS c_U (OM52G95U)
MaintenanceDo-it-yourself
maintenance ....................... 418
Emission inspection and maintenance (I/M)
programs ............................ 417
General maintenance ........... 414
Maintenance data ................. 538
Maintenance requirements ... 411
Meter Instrument panel light
control................................... 99
Meters ..................................... 97
Microphone .............................. 335
Mirrors
Inside rear view mirror .......... 158
Outside rear view mirror defogger ............................. 380
Outside rear view mirrors...... 159
Vanity mirrors........................ 395
Moon roof ................................. 165
MP3 disc ................................... 302
Multi-information display ........ 101
Navigation system
*
Noise from under vehicle............ 8 Odometer ................................... 98
Oil
Engine oil .............................. 541
Opener Back door ............................. 134
Fuel filler door ....................... 219
Hood ..................................... 421
Outside rear view mirrors
Adjusting and folding ............ 159
Defogger ............................... 380
Outside temperature
display...................................... 99
Overheating, Hybrid system.................................... 531
Parking brake........................... 205
Parking lights Replacing light bulbs ............ 462
Switch ................................... 206
Wattage ................................ 546
PCS (Pre-Collision system) .... 229 PCS (Pre-Collision
system) switch...... .............. 232
Warning light......................... 484
Personal lights Switch ................................... 388
Wattage ................................ 546
Power outlet ............................. 396
Power switch ................... 186, 190
Power windows ....................... 161
Pre-Collision system (PCS) .... 229 PCS (Pre-Collision
system) switch...... .............. 232
Warning light......................... 484
M
N
O
P
*: For vehicles with a navigation system, refer to the “NAVIGATION SYSTEM OWNER'S MANUAL”.