overheating TOYOTA PRIUS PRIME 2018 Owners Manual (in English)

112
PRIUS PRIME_OM_OM47C17U_(U)
2-2. Charging
For safety, inspect the charging cable on a routine basis.
Inspecting and maintaining the charging cable
WARNING
■Routine inspection
Check the following points regularly.
Failure to do so may cause an unexpected accident, resulting in death or
serious injury.
● The charging cable, plug, charging connector, CCID (Charging Ci rcuit
Interrupting Device) etc. have not been damaged
● The outlet has not been damaged
● The plug can be securely inserted into the outlet
● The plug does not get extremely hot during use
● The tip of the plug has not been deformed
● The plug is not dirtied by dust etc.
Remove the plug from the outlet before inspecting it. If any ab normalities
are found in the charging cable as a result of the inspection, immediately
stop use and consult your Toyota dealer.
■ Maintaining the charging cable
When the charging cable is dirty, first remove the dirt with a hard, wringed
cloth, and then wipe the cable with a dry cloth.
However, never wash it with water. If the charging cable is was hed with
water, fire or electric shock may occur during charging, possib ly resulting in
death or serious injury.
■ When not using the charg ing cable for a long time
Remove the plug from the outlet. Dust could accumulate on the p lug or in
the outlet, possibly causing overheating which could lead to a fire.
Also, keep the cable in a place free from moisture.

PRIUS PRIME_OM_OM47C17U_(U)
1953. Instrument cluster
3
Instrument cluster
■BSM (Blind Spot Monitor) outsid e rear view mirror indicators
(if equipped) ( P. 408)
• When the BSM function is enabled on the screen of the multi-i nfor-
mation display, the power switch is turned to ON mode.
If the system is functioning correctly, the BSM outside rear vi ew mirror indi-
cators will turn off after a few seconds.
If the BSM outside rear view mirror indicators do not illuminat e or do not
turn off, there may be a malfunction in the system.
If this occurs, have the vehicle inspected by your Toyota deale r.
●
Indicators are also displayed on the out-
side rear view mirrors.
● In order to confirm operation, the BSM
outside rear view mirror indicators illumi-
nate in the following situations:
• When the power switch is in ON
mode, the BSM function is enabled
on the screen of the multi-infor-
mation display.
WARNING
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning li ght not
come on when you start the hybrid system, this could mean that these sys-
tems are not available to help protect you in an accident, whic h could result
in death or serious injury. Have the vehicle inspected by your Toyota dealer
immediately if this occurs.
NOTICE
■ To prevent damage to the engine and its components
The engine may be overheating if the high coolant temperature warning
light comes on or flashes. In this case, immediately stop the vehicle in a
safe place, and check the engine after it has cooled completely . (P. 704)

PRIUS PRIME_OM_OM47C17U_(U)
3155-1. Before driving
5
Driving
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When taking a nap in the vehicle
Always turn the hybrid system off. Otherwise, if you accidental ly move the
shift lever or depress the accelerator pedal, this could cause an accident or
fire due to hybrid system overheating. Additionally, if the vehicle is parked in
a poorly ventilated area, exhaust gases may collect and enter the vehicle,
leading to death or a serious health hazard.
■ When braking
● When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this ma y cause
one side of the vehicle to brake differently than the other sid e. Also, the
parking brake may not securely hold the vehicle.
● If the electronically controlled assist function does not opera te, do not fol-
low other vehicles closely and avoid downhill or sharp turns th at require
braking.
In this case, braking is still possible, but the brake pedal sh ould be
depressed more firmly than usual. Also, the braking distance wi ll increase.
Have your brakes fixed immediately.
● The brake system consists of 2 or more individual hydraulic systems; if
one of the systems fails, the other(s) will still operate. In t his case, the
brake pedal should be depressed more firmly than usual and the braking
distance will increase. Have your brakes fixed immediately.

337
PRIUS PRIME_OM_OM47C17U_(U)
5-2. Driving procedures
5
Driving
Parking brake
To set the parking brake, fully
depress the parking brake pedal
with your left foot while depress-
ing the brake pedal with your right
foot.
(Depressing the pedal again
releases the parking brake.)
■Parking the vehicle
P. 307
■ Parking brake engaged warning buzzer
A buzzer will sound if the vehicle is driven with the parking b rake engaged.
“Release Parking Brake” is displayed on the multi-information d isplay (with
the vehicle reached a speed of 3 mph [5 km/h]).
■ Usage in winter time
P. 483
Operating instructions
(U.S.A.)
(Canada)
NOTICE
■ Before driving
Fully release the parking brake.
Driving the vehicle with the parking brake set will lead to bra ke components
overheating, which may affect braking performance and increase brake
wear.

PRIUS PRIME_OM_OM47C17U_(U)
4795-5. Using the driving support systems
5
Driving
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the s ystem from
overheating when there is frequent steering input over an exten ded period of
time. The steering wheel may feel heavy as a result. Should thi s 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 wa rning light (warning buzzer)
P. 658
■ 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 off
● If only the TRAC system is turned off, the TRAC will turn on wh en vehicle
speed increases
If both the TRAC and VSC systems are turned off, automatic re-e nabling will
not occur when vehicle speed increases.
■ Operating conditions of hill-start assist control
When the following four conditions are met, the hill-start assi st control will
operate:
● The shift position is in a position other than P or N (when sta rting off forward/
backward on an upward incline)
● The vehicle is stopped
● The accelerator pedal is not depressed
● The parking brake is not engaged
■ Automatic system cancelation of hill-start assist control
The hill-start assist control will turn off in any of the follo wing situations:
● Shift the shift position to P or N
● The accelerator pedal is depressed
● The parking brake is engaged
● Approximately 2 seconds elapse after the brake pedal is release d

704
PRIUS PRIME_OM_OM47C17U_(U)
8-2. Steps to take in an emergency
If your vehicle overheats
■If the high coolant temperature warning light comes on or
flashesStop the vehicle in a safe place and turn off the air conditioning
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has cooled down sufficiently, inspect t he
hoses and radiator core (ra diator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
your Toyota dealer.
The following may indicate that your vehicle is overheating.
● The high coolant temperature warning light ( P. 659) comes on
or flashes, or a loss of hybrid system power is experienced. (F or
example, the vehicle s peed does not increase.)
● “Hybrid System Overheated” is shown on the multi-information
display.
● Steam comes out from under the hood.
Correction procedures
1
2
3
1
2

773Alphabetical index
PRIUS PRIME_OM_OM47C17U_(U)
Clock ......................................... 180Adjustment ............................ 185
Coat hooks ............................... 544
Combination meter .................. 180 Clock adjustment .................. 185
Main display .......................... 196
Multi-information display ....... 205
Warning lights and
indicators ............................ 188
Condenser ................................ 590
Console box ............................. 520
Consumption screen ....... 250, 256
Coolant ..................................... 588 Capacity ................................ 718
Checking ............................... 588
Preparing and checking before winter....................... 482
Cooling system ........................ 588 Engine overheating ............... 704
Hybrid system overheating ... 706
Cruise control .......................... 391 Dynamic radar cruise control with full-speed range .......... 391
Cup holders.............................. 521
Curtain shield airbags ............... 36
Customizable features ............ 736
Daytime running light system .................................... 341
Deck board ............................... 524
Defogger Outside rear view
mirrors ........................ 492, 503
Rear window ................. 492, 503
Windshield .................... 492, 502 Dimension ................................ 712
Dinghy towing.......................... 323
Display
BSM (Blind Spot Monitor) ..... 408
Drive information .................. 207
Dynamic radar cruise control with full-speed range .......... 391
Energy monitor ..... 208, 247, 253
Head-up display.................... 238
Intelligent Clearance Sonar.................................. 435
Intuitive parking assist .......... 421
LDA (Lane Departure Alert with steering control) .......... 385
Main display.......................... 196
Multi-information display ....... 205
Pre-collision warning ............ 369
S-APGS (Simple Advanced Parking Guidance
System) .............................. 446
Warning messages ............... 667
Do-it-yourself maintenance .... 578
Door courtesy lights ............... 516 Location ................................ 516
Wattage ................................ 721
Doors ................................ 267, 273 Automatic door locking
and unlocking system......... 270
Back door ............................. 273
Door glasses......................... 300
Door lock .............................. 267
Open door warning buzzer ... 659
Open door warning light ....... 659
Outside rear view mirrors ..... 298
Rear door child-protectors .... 270
Side doors ............................ 267
Side windows........................ 300
D
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

774Alphabetical index
PRIUS PRIME_OM_OM47C17U_(U)
Drive information ..................... 207
Drive-Start Control .................. 308
Driver’s seat belt reminder light......................................... 659
Driving ...................................... 306
Break-in tips .......................... 309
Correct posture ....................... 28
Driving in the rain .................. 307
Driving mode select switch ... 406
Plug-in hybrid vehicle driving tips ........................................ 97
Procedures ........................... 306
Winter drive tips .................... 482
Dynamic radar cruise control
with full-speed range ............ 391
ECB (Electronically Controlled Brake System) .... 476
Eco drive mode ........................ 406
EDR (Event data recorder) ........ 11
Electric motor (traction motor) ....................... 78
Location .................................. 78
Specification ......................... 715
Electric Power Steering (EPS)....................................... 477
Function ................................ 477
Warning light ......................... 658
Electronic key .......................... 262
Battery-saving function ......... 280
If the electronic key does not operate properly ........... 694
Replacing the battery ............ 631
Electronically Controlled Brake System (ECB) ............. 476 Emergency, in case of
If a warning buzzer sounds... 657
If a warning light turns on ..... 657
If a warning message is displayed ............................ 667
If the 12-volt battery is discharged.......................... 698
If the electronic key does
not operate properly ........... 694
If the hybrid system will not start .............................. 692
If you have a flat tire ............. 675
If you lose your keys ..... 263, 266
If you think something is wrong .............................. 656
If your vehicle becomes stuck ................................... 709
If your vehicle has to be stopped in an emergency ... 649
If your vehicle needs to be
towed.................................. 650
If your vehicle overheats....... 704
Emergency flashers ................ 648
Emergency tire puncture
repair kit ................................. 675
Energy monitor ........ 208, 247, 253
Engine Accessory mode ................... 326
Compartment ........................ 584
Engine switch ....................... 324
Exhaust gas precautions ........ 56
Hood ..................................... 581
How to start the hybrid system .......... ...................... 324
Identification number ............ 714
If the hybrid system will not start .............................. 692
If your vehicle has to be stopped in an emergency ... 649
Ignition switch (power switch) .................... 324
Overheating .......................... 704
Power switch ........................ 324
E

776Alphabetical index
PRIUS PRIME_OM_OM47C17U_(U)
Hands-free system (for cellular phone)
*
Head restraints ........................ 291
Head-up display ....................... 238
Headlights ................................ 338
Automatic High Beam system ......... ....................... 343
Headlight aim ................ 637, 762
Light switch ........................... 338
Replacing light bulbs............. 644
Heated steering wheel............. 515
Heaters
Automatic air conditioning system .... 488, 499
Heated steering wheel .......... 515
Outside rear view mirrors ........................ 492, 503
Seat heaters ......................... 514
High coolant temperature warning light .......................... 659
High mounted stoplight Replacing .............................. 644
High-voltage components ........ 90
Hill-start assist control............ 477
Hood ......................................... 581
Hooks Coat hooks............................ 544
Grocery bag hook ................. 525
Retaining hooks (floor mat)..... 26
Horn .......................................... 294
HV mode ..................................... 79 Hybrid battery
(traction battery) ..................... 90
Air intake vent ......................... 91
Charging ............................... 102
Location .................................. 90
Specification ......................... 715
Status indicator ..................... 104
Hybrid battery (tr action battery)
air intake vent .......................... 91
Hybrid system............................ 78 Brake Override System ........ 307
Consumption
screen ................ 218, 250, 256
Drive-Start Control ................ 308
Emergency shut off system .... 91
Energy monitor ..... 208, 247, 253
High voltage components ....... 90
Hybrid System Indicator ....... 210
If the hybrid system will not start .............................. 692
Overheating .......................... 704
Plug-in hybrid system precautions........................... 90
Plug-in hybrid vehicle driving tips........................................ 97
Power switch ........................ 324
Regenerative braking ............. 86
Starting the hybrid system .... 324
Vehicle proximity notification system................ 85
Hybrid System Indicator ......... 210
Hybrid transmission................ 330
H

779Alphabetical index
PRIUS PRIME_OM_OM47C17U_(U)
Energy monitor ..................... 208
Intelligent Clearance Sonar .................................. 435
Intuitive parking assist .......... 421
Language .............................. 233
LDA (Lane Departure Alert with steering control) .......... 385
Navigation system-linked
display ................................ 225
Pre-collision warning............. 369
S-APGS (Simple Advanced Parking Guidance
System) .............................. 446
Settings ................................. 231
Warning message ................. 230
Navigation system
*
Noise from under vehicle............ 8
Odometer.................................. 198
Oil Engine oil .............................. 716
Opener Back door.............................. 273
Fuel filler door ....................... 358
Garage door.......................... 545
Hood ..................................... 581
Outside rear view mirrors ....... 298
Adjustment ............................ 298
Blind Spot Monitor ................ 408
Folding .................................. 298
Outside rear view mirror defoggers ................... 492, 503
Outside temperature
display .................................... 196
Overhead console ................... 523
Overheating.............................. 704 P position switch ..................... 331
Panic mode .............................. 263
Parking assist sensors
Intelligent Clearance Sonar.................................. 430
Intuitive parking assist .......... 420
S-APGS (Simple Advanced Parking Guidance
System) .............................. 442
Parking brake........................... 337 Operation .............................. 337
Parking brake engaged
warning buzzer ................... 337
Parking lights........................... 338
Light switch ........................... 338
Replacing light bulbs ............ 644
Parking lock ............................. 331
PCS (Pre-Collision System).... 369
Enabling/disabling the system .......... ...................... 373
Function ................................ 369
Warning light......................... 658
Personal lights......................... 516
Switch ................................... 517
Wattage ................................ 721
Plug-in hybrid system ............... 78 Driving tips .............................. 97
EV auto mode ......................... 79
EV driving range ................... 100
EV mode ................................. 79
EV/HV mode selection
switch ................................... 82
Features ................................. 78
How to charge ...................... 136
HV mode................................. 79
Hybrid battery (traction
battery) charge mode ........... 79
N
O
P
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.