2018 TOYOTA PRIUS check engine light

6758-2. Steps to take in an emergency
PRIUS_OM_OM47B89U_(U)
8
When trouble arises
High coolant temperature warning light
• When the light flashes: Indicates that the engine coolant temperature is too high
The light changes from a flashing to a solid light when
the temperature further increases
→ Immediately stop the vehicle in a safe place. ( →P. 735)
• When the light comes on without flashing: Indicates a malfunction in the exhaust heat recirculator
system
→ Have the vehicle inspected by your Toyota dealer
immediately.
(Flashes)
(If equipped)
ICS OFF indicator
Indicates a malfunction in the Intelligent Clearance Sonar
function
→ Have the vehicle inspected by your Toyota dealer.
The warning light will operate as follows, even when the
system is not malfunctioning:
• The light will come on when the Intelligent Clearance Sonar function is turned off ( →P. 352)
• The light will come on when the Intelligent Clearance
Sonar function is operating ( →P. 356)
• The light will flash when the system cannot be temporar- ily used ( →P. 360)
Open door warning light (warning buzzer)*3
Indicates that a door is not fully closed
→ Check that all the doors are closed.
Low fuel level warning light
Indicates that remaining fuel is approximately 1.7 gal.
(6.4 L, 1.4 Imp.gal.) or less
→ Refuel the vehicle.
Seat belt reminder light (warning buzzer)*4
Warns the driver and/or front passenger to fasten their
seat belts
→ Fasten the seat belt.
If the front passenger’s seat is occupied, the front
passenger’s seat belt also needs to be fastened to
make the warning light (war ning buzzer) turn off.
(U.S.A.)
(Canada)
Rear passengers’ seat belt reminder lights (warning
buzzer)
*5
Warns the rear passengers to fasten their seat belts
→ Fasten the seat belt.
Warning lightWarning light/Details/Actions

7318-2. Steps to take in an emergency
PRIUS_OM_OM47B89U_(U)
8
When trouble arises
Once the hybrid system has started, remove the jumper cables in
the exact reverse order from which they were connected.
To install the engine cover, conduct the removal procedure in
reverse. After installing, check that the fixed pins are inserted
securely.
Once the hybrid system starts, ha ve the vehicle inspected at your
Toyota dealer as soon as possible.
■ Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■ To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the hybrid system is off.
● Turn off any unnecessary electrical components when the vehicle is running
at a low speed for an extended period, such as in heavy traffic.
■ When the 12-volt battery is removed or discharged
●Information stored in the ECU is cleared. When the 12-volt battery is
depleted, have the vehicle inspected at your Toyota dealer.
● Some systems may require initialization. ( →P. 780)
■ When removing the 12-volt battery terminals
When the 12-volt battery terminals are removed, the information stored in the
ECU is cleared. Before removing the 12-volt battery terminals, contact your
Toyota dealer.
■ Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even when
the vehicle is not in use, due to natural discharge and the draining effects of
certain electrical appliances. If the vehicle is left for a long time, the 12-volt
battery may discharge, and the hybrid system may be unable to start. (The
12-volt battery recharges automatically while the hybrid system is operating.)
7
8

807Alphabetical index
PRIUS_OM_OM47B89U_(U)
EngineAccessory mode ................... 233
Compartment ........................ 604
Engine switch........................ 231
Exhaust gas precautions ........ 56
Hood ..................................... 601
How to start the hybrid system ......... ....................... 231
Identification number ............ 746
If the hybrid system will not start .............................. 724
If your vehicle has to be stopped in an
emergency.......................... 665
Ignition switch (power switch) .................... 231
Overheating .......................... 735
Power switch......................... 231
Engine coolant Capacity ................................ 750
Checking ............................... 608
Preparing and checking before winter....................... 418
Engine oil Capacity ................................ 748
Checking ............................... 605
Oil pressure warning light ..... 673
Preparing and checking before winter....................... 418
Engine switch .......................... 231
Auto power off function ......... 233
Changing the power switch modes...................... 233
If your vehicle has to be stopped in an
emergency.......................... 665
Starting the hybrid system .... 231 EPS
(Electronic Power Steering)
Function ................................ 408
Warning light......................... 674
EV indicator ............................. 119
EV drive mode ......................... 237
Event data recorder (EDR) ........................................ 11
Exhaust gas precautions .......... 56
Flat tire ..................................... 691
Floor mats .................................. 26
Fluid Brake .................................... 751
Transmission ........................ 751
Washer ................................. 616
Fog lights Replacing light bulbs ............ 660
Switch ................................... 258
Footwell lights ......................... 538
Front doors .............................. 171
Front fog lights Replacing light bulbs ............ 660
Switch ................................... 258
Front passenger occupant classification system .............. 50
Front passenger’s seat belt reminder light................. 675
Front seats ............................... 190
Adjustment............................ 190
Cleaning ............................... 588
Correct driving posture ........... 28
Head restraints ..................... 195
Seat heaters ......................... 536
Front side marker lights
Light switch ........................... 248
Replacing light bulbs ............ 660
F

811Alphabetical index
PRIUS_OM_OM47B89U_(U)
Multi-information displayAir conditioning system
settings screen ................... 134
Audio system-linked display ................................ 133
BSM (Blind Spot Monitor) ..... 326
Display contents ................... 114
Drive information................... 116
Driving assist system information.......................... 138
Dynamic radar cruise control
with full-speed range .......... 304
Energy monitor ..................... 117
Language .............................. 142
LDA (Lane Departure Alert with steering control) .......... 298
Navigation system-linked
display ................................ 133
Parking assist system ... 340, 367
Pre-collision warning............. 281
Settings display..................... 139
Warning message display..... 138
Navigation system
*
Noise from under vehicle............ 8
Odometer.................................. 109
Oil Engine oil .............................. 748
Opener Fuel filler door ....................... 270
Hood ..................................... 601
Outside rear view mirrors ....... 202 Adjustment ............................ 202
Blind Spot Monitor ................ 326
Folding .................................. 202
Outside rear view mirror
defoggers ................... 520, 530 Outside temperature
display.................................... 108
Overhead console ................... 545
Overheating ............................. 735
Overheating, Engine ............... 735
P position switch ..................... 241
Panic mode .............................. 167
Parking assist sensors Intelligent Clearance
Sonar.................................. 350
Intuitive parking assist .......... 339
S-APGS (Simple Advanced Parking Guidance
System) .............................. 363
Parking brake
Operation .............................. 247
Parking brake engaged warning buzzer ................... 247
Parking lights Light switch ........................... 248
Replacing light bulbs .... 656, 660
Wattage ................................ 754
Parking lock ............................. 241
PCS (Pre-Collision System) Enabling/disabling the
system .......... ...................... 285
Function ................................ 281
Warning light......................... 674
Personal lights......................... 538 Switch ................................... 539
Wattage ................................ 754
Power control unit coolant Capacity................................ 750
Checking............................... 608
Preparing and checking before winter ...................... 418
Radiator ................................ 610
N
O
P
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

817Alphabetical index
PRIUS_OM_OM47B89U_(U)
Warning lightsABS....................................... 674
Brake Override System......... 677
Brake system ....... ................. 673
Charging system ................... 673
Drive-Start Control ................ 677
Driver’s seat belt reminder ............................. 675
Electronic engine control system ......... ....................... 673
Electric power steering ......... 674
Front passenger’s seat
belt reminder ...................... 675
High coolant temperature ..... 675
ICS OFF indicator ................. 675
Intelligent Clearance Sonar .................................. 677
Low engine oil pressure ........ 673
Low fuel level ........................ 675
Malfunction indicator lamp .... 673
Master warning light.............. 676
Open door ............................. 675
PCS ...................................... 674
Rear passengers’ seat belt reminder light...................... 675
Seat belt reminder light ......... 675
Slip indicator ......................... 674
SRS ...................................... 674
Tire pressure......................... 676 Warning messages.................. 684
Warning reflector..................... 549
Washer
Checking............................... 616
Preparing and checking before winter ...................... 418
Switch ........................... 260, 266
Washing and waxing ............... 582
Water-repellent coating .......... 583
Weights Cargo capacity...................... 228
Load limits ............................ 744
What to do if... (Troubleshooting) ................. 798
Wheels ...................................... 631 Replacing wheels ................. 691
Size....................................... 752
Window glasses ...................... 204
Window lock switch ................ 204
Windows Power windows..................... 204
Rear windowdefogger ..................... 520, 530
Washer ......................... 260, 266
Windshield wipers ................... 260 Handling the wiper arms ....... 587
Winter driving tips ................... 418
Wiper rubber replacement ...... 642
Wireless charger ..................... 557
Wireless communication ........ 461
Wireless remote control
key .......................................... 166 Locking/Unlocking ................ 166
Panic mode........................... 167
Replacing the battery............ 646
WMA disc ................................. 444