2017 TOYOTA PRIUS engine overheat

17Pictorial index
PRIUS_OM_OM47B54U_(U)Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 254
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 412
Precautions against car wash (vehicles with rain-sensing
windshield wipers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 568
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 262
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 262
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 725
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 604
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . P. 730
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 412
Checking/rotation/tire pressure warning system . . . . . . . . . P. 604
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . P. 670, 684
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 587
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 587
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 726
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 714
Headlights/parking lights
*1/daytime running lights/
side marker lights/LED accent lights
*2. . . . . . . . . . . . . . . . P. 242
Fog lights
*2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 252
Turn signal lights/parking lights
*1. . . . . . . . . . . . . . . . P. 240, 242
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 240
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 242
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 242
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 234
4
5
6
7
Light bulbs of the exter ior lights for driving
(Replacing method: P. 635, Watts: P. 732)
*1: The location of the parking lights may differ depending on the grade, etc.
*2: If equipped
8
9
10
11
12
13
14

106
PRIUS_OM_OM47B54U_(U)
2. Instrument cluster
■BSM (Blind Spot Monitor) outsid e rear view mirror indicators
(if equipped) ( →P. 320)
• When the BSM function is enabled on the screen of the multi-infor- mation display, the power switch is turned to ON mode.
If the system is functioning correctly, the BSM outside rear view mirror indi-
cators will turn off after a few seconds.
If the BSM outside rear view mirror indicators do not illuminate or do not
turn off, there may be a malfunction in the system.
If this occurs, have the vehicle inspected by your Toyota dealer.
●
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 light 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, which could r\
esult
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. 714)

212
PRIUS_OM_OM47B54U_(U)
4-1. Before driving
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When driving the vehicle
● Use engine braking (shift position B instead of shift position D) to maintain
a safe speed when driving down a steep hill.
Using the brakes continuously may cause the brakes to overheat and lose
effectiveness. ( →P. 235)
● 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 high-
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.
■ When driving on slippery road surfaces
● Sudden braking, acceleration and steering may cause tire slippage and
reduce your ability to control the vehicle.
● Sudden acceleration, engine braking due to shifting, or changes in engine
speed could cause the vehicle to skid, resulting in an accident.
● After driving through a puddle, depress the brake pedal to make sure that
the brakes are functioning properly. Wet brake pads may prevent the
brakes from functioning properly. If the brakes on only one side are wet
and not functioning properly, steering control may be affected.

214
PRIUS_OM_OM47B54U_(U)
4-1. Before driving
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■If you hear a squealing or scrapi ng noise (brake pad wear limit indica-
tors)
Have the brake pads checked and replaced by your Toyota dealer as soon
as possible.
Rotor damage may result if the pads are not replaced when needed.
It is dangerous to drive the vehicle when the wear limits of the brake pads
and/or those of the brake discs are exceeded.
■ When the vehicle is stopped
● Do not depress the accelerator pedal unnecessarily.
If the shift position is in any position other than P or N, the vehicle may
accelerate suddenly and unexpectedly, causing an accident.
● 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 combustible
material is nearby.

7178-2. Steps to take in an emergency
PRIUS_OM_OM47B54U_(U)
8
When trouble arises
After stopping the hybrid system and waiting for 5 minutes or
more, start the hybrid system again and check if “Hybrid System
Overheated” is shown on the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact your Toyota dealer.
If the message is not displayed:
The hybrid system temperature has dropped and the vehicle may
be driven normally.
However, if the message appears again frequently, contact your Toyota
dealer.
WARNING
■ To prevent an accident or injury when inspecting under the hood of
your vehicle
Observe the following precautions.
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 subsided. The engine compartment may be very hot.
● After the hybrid system has been turned off, check that the “Accessory”,
“Ignition ON” or mileage display ( →P. 108) on the main display and the
“READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automati-
cally start, or 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 reservoir caps while the hybrid system and radi-
ator are hot.
High temperature steam or coolant could spray out.
6

783Alphabetical index
PRIUS_OM_OM47B54U_(U)
If you have a flat tire ............. 670
If you lose your keys ..... 161, 164
If you think something is wrong .............................. 652
If your vehicle becomes
stuck ................................... 719
If your vehicle has to be stopped in an
emergency.......................... 645
If your vehicle needs to be towed .................................. 646
If your vehicle overheats ....... 714
Energy monitor ................ 117, 153
Engine Accessory mode ................... 227
Compartment ........................ 590
Engine switch........................ 225
Exhaust gas precautions ........ 56
Hood ..................................... 587
How to start the hybrid system ......... ....................... 225
Identification number ............ 724
If the hybrid system will not start .............................. 703
If your vehicle has to be stopped in an
emergency.......................... 645
Ignition switch (power switch) .................... 225
Overheating .......................... 714
Power switch......................... 225 Engine coolant
Capacity................................ 728
Checking............................... 594
Preparing and checking before winter ...................... 412
Engine oil Capacity................................ 726
Checking............................... 591
Oil pressure warning light ..... 653
Preparing and checking before winter ...................... 412
Engine switch .......................... 225 Auto power off function ......... 227
Changing the power switch modes ..................... 227
If your vehicle has to be stopped in an
emergency ......................... 645
Starting the hybrid system .... 225
EPS
(Electronic Power Steering) Function ................................ 402
Warning light......................... 654
EV indicator ............................. 119
EV drive mode ......................... 231
Event data recorder (EDR) ........................................ 11
Exhaust gas precautions .......... 56

785Alphabetical index
PRIUS_OM_OM47B54U_(U)
High coolant temperature
warning light .......................... 655
High mounted stoplight Replacing .............................. 641
Hill-start assist control............ 403
Hood ......................................... 587
Hooks Cargo hooks ......................... 532
Coat hooks............................ 550
Grocery bag hook ................. 533
Retaining hooks (floor mat)..... 26
Horn .......................................... 192
Hybrid battery (traction battery) Location .................................. 82
Specification ......................... 725
Hybrid battery (traction battery)
air intake vent .......................... 83
Hybrid system ............................ 78 Brake Override System......... 209
Drive-Start Control ................ 210
Emergency shut off system ......... ......................... 83
Energy monitor/consumption
screen......................... 117, 153
EV drive mode ...................... 231
High voltage components ....... 82
Hybrid System Indicator........ 119
Hybrid system precautions ..... 82
Hybrid vehicle driving tips ..... 409
If the hybrid system will not start .............................. 703
Overheating .......................... 714
Power switch......................... 225
Regenerative braking.............. 80
Starting the hybrid system .... 225
Vehicle proximity notification system ................ 79
Hybrid System Indicator ......... 119
Hybrid transmission ................ 234 I/M test ...................................... 583
Identification
Engine .................................. 724
Vehicle .................................. 723
Ignition switch
(Power switch)....................... 225 Auto power off function ......... 227
Changing the power switch modes ..................... 227
If your vehicle has to be stopped in an
emergency ......................... 645
Starting the hybrid system .... 225
Illuminated entry system ........ 525
Immobilizer system ................... 89
Indicators ................................. 100
Initialization
Intelligent Clearance Sonar.................................. 354
Items to initialize ................... 756
Maintenance data ................. 578
Moon roof ............................. 204
Power windows..................... 199
S-APGS (Simple Advanced
Parking Guidance
System) .............................. 382
Tire pressure warning
system .......... ...................... 607
Inside rear view mirror ............ 194
Instrument cluster light control ...................................... 94
Intelligent Clearance Sonar .... 344
Interior lights ........................... 523 Switch ........................... 524, 525
Wattage ................................ 732
Intuitive parking assist ........... 333I

788Alphabetical index
PRIUS_OM_OM47B54U_(U)
Navigation system*
Noise from under vehicle............ 8
Odometer.................................. 109
OilEngine oil .............................. 726
Opener
Fuel filler door ....................... 264
Hood ..................................... 587
Outside rear view mirrors ....... 196
Adjustment ............................ 196
Blind Spot Monitor ................ 320
Folding .................................. 196
Outside rear view mirror defoggers ........................... 515
Outside temperature
display .................................... 108
Overhead console ................... 530
Overheating.............................. 714
Overheating, Engine................ 714 P position switch ..................... 235
Panic mode .............................. 161
Parking assist sensors
Intelligent Clearance Sonar.................................. 344
Intuitive parking assist .......... 333
S-APGS (Simple Advanced Parking Guidance
System) .............................. 357
Parking brake Operation .............................. 241
Parking brake engaged
warning buzzer ................... 241
Parking lights
Light switch ........................... 242
Replacing light bulbs .... 637, 641
Wattage ................................ 732
Parking lock ............................. 235
PCS (Pre-Collision System) Enabling/disabling the
system .......... ...................... 279
Function ................................ 275
Warning light......................... 654
Personal lights......................... 523 Switch ................................... 524
Wattage ................................ 732
Power control unit coolant
Capacity................................ 728
Checking............................... 594
Preparing and checking before winter ...................... 412
Radiator ................................ 596
Power outlets ........................... 541
Power steering (Electric
Power Steering system) ....... 402 Warning light......................... 654
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