check engine TOYOTA PRIUS 2016 4.G Owner's Manual

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7-3. Do-it-yourself maintenance
7
Maintenance and care
Checking and replacing fuses
Turn the power switch off.
Open the fuse box cover.
Engine compartment type A fuse box
While pushing the 2 claws, lift up
the cover.
When closing the cover, make sure
to attach the 2 claws.
Engine compartment type B fuse box
While pushing the 3 claws, lift up
the cover.
When closing the cover, make sure
to attach the 3 claws.
Left side instrument panel
Remove the lid.
Make sure to press the claw during
removal or installation.
If any of the electrical components do not operate, a fuse may
have blown. If this happens, check and replace the fuses as nec-
essary.
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6578-2. Steps to take in an emergency
PRIUS_OM_OM47A29U_(U)
8
When trouble arises
Slip indicator lightIndicates a malfunction in:
• The VSC system;
• The TRAC system; or
• The hill-start assist control system
 Have the vehicle inspected by your Toyota dealer
immediately.
The light will flash when the ABS, VSC or TRAC system is
operating.
High coolant temperat ure 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. 717)
• 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. 348)
• The light will come on when the Intelligent Clearance Sonar function is operating ( P. 352)
• The light will flash when the system cannot be tempo- rarily used ( P. 356)
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.
Warning lightWarning light/Details/Actions

6688-2. Steps to take in an emergency
PRIUS_OM_OM47A29U_(U)■
If “See Owner’s Manual” is shown
●If “Braking Power Low Stop in a Safe Place See Owner’s Manual” is shown,
this may be a malfunction. Immediately stop the vehicle in a safe place and
contact your Toyota dealer. Continuing to drive the vehicle may be danger-
ous.
● If “Engine Oil Pressure Low” is shown, this may be a malfunction. Immedi-
ately stop the vehicle in a safe place and contact your Toyota dealer.
● If the following messages are shown, there may be a malfunction. Immedi-
ately have the vehicle inspected by your Toyota dealer.
• “Hybrid System Malfunction”
• “Check Engine”
• “Hybrid Battery System Malfunction”
• “Accelerator System Malfunction”
• “Smart Key System Malfunction See Owner’s Manual”
■ If “Shift System Not Active Apply Parking Brake Securely While Parking
See Owner’s Manual” is shown
Indicates a malfunction in the shift control system. Immediately have the vehi-
cle inspected by your Toyota dealer.
When the message is shown, the hybrid system may not be started or the
shift position may not be changed normally. (Coping method: P. 671)
■ If “Shift System Malfunction Apply Parking Brake Securely While Park-
ing See Owner’s Manual” is shown
Indicates a malfunction in the shift control system. Immediately have the vehi-
cle inspected by your Toyota dealer.
When the message is shown, the hybrid system may not be started or the
shift position may not be changed normally. (Coping method: P. 671)
■ If “ Switch Malfunction Apply Pa rking Brake Securely While Parking
See Owner’s Manual” is shown
The P position switch may not operate. Immediately have the vehicle
inspected by your Toyota dealer.
When parking the vehicle, stop the vehicle on level ground and apply the
parking brake firmly.
■ If “Shift System Malfunction Shifting Unavailable See Owner’s Manual”
is shown
Indicates a malfunction in the shift control system. Immediately have the vehi-
cle inspected by your Toyota dealer.
The shift position may not be shifted from P to other than P.
■ If “Shift System Malfunction Stop in a Safe Place See Owner’s Manual”
is shown
Indicates a malfunction in the shift control system. Immediately have the vehi-
cle inspected by your Toyota dealer.
The shift position may not be changed. Stop the vehicle in a safe place.

7138-2. Steps to take in an emergency
PRIUS_OM_OM47A29U_(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, have the vehicle inspected at your
Toyota dealer as soon as possible.
■ Starting the hybrid system when th e 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. 760)
■ 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.)
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8

7208-2. Steps to take in an emergency
PRIUS_OM_OM47A29U_(U)
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 multi-information 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.
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PRIUS_OM_OM47A29U_(U)
9-1. Specifications
■Oil capacity (Drain and refill [Reference*])
*: The engine oil capacity is a reference quantity to be used when changingthe engine oil. Park the vehicle on level ground. After warming up the
engine and turning off the hybrid system, wait more than 5 minutes, and
check the oil level on the dipstick.
■
Engine oil selection
“Toyota Genuine Motor Oil” is used in your Toyota vehicle. Use
Toyota approved “Toyota Genuine Motor Oil” or equivalent to satisfy
the following grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice
for good fuel economy and
good starting in cold weather.
If SAE 0W-20 is not available,
SAE 5W-20 oil may be used.
However, it must be replaced
with SAE 0W-20 at the next oil
change.
Oil viscosity (0W-20 is explained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which
allows cold startability. Oils wi th a lower value before the W allow
for easier starting of the engine in cold weather.
• The 20 in 0W-20 indicates the viscosity characteristic of the oil when the oil is at high temperature. An oil with a higher viscosity
(one with a higher value) may be better suited if the vehicle is
operated at high speeds, or under extreme load conditions.
Lubrication system
With filter4.4 qt. (4.2 L, 3.7 Imp.qt.)
Without filter4.1 qt. (3.9 L, 3.4 Imp.qt.)
Outside temperature

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PRIUS_OM_OM47A29U_(U)
9-1. Specifications
*: The coolant capacity is a reference quantity.If replacement is necessary, contact your Toyota dealer.
Cooling system
Capacity*
Gasoline
engine6.2 qt. (5.9 L, 5.2 Imp.qt.)
Power
control unit1.5 qt. (1.4 L, 1.2 Imp.qt.)
Coolant type
Use either of the following: • “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol- based non-silicate, non-amine, non-
nitrite, and non-borate coolant with
long-life hybrid organic acid technology
Do not use plain water alone.
Ignition system (spark plug)
MakeDENSO FC16HR-C9
Gap0.035 in. (0.9 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system (12-volt battery)
Open voltage at 68 F (20 C):
12.5 V or higher: Fully charged
11.0 — 12.4 V: Half charged
10.9 V or lower: Discharged
(Voltage is checked 30 seconds after the
hybrid system and all lights are turned off.)
Charging rates5 A max.

787Alphabetical index
PRIUS_OM_OM47A29U_(U)
If you have a flat tire ............. 673
If you lose your keys ..... 161, 164
If you think something is wrong .............................. 654
If your vehicle becomes
stuck ................................... 722
If your vehicle has to be stopped in an emergency ... 647
If your vehicle needs to be towed .................................. 648
If your vehicle overheats ....... 717
Energy monitor ................ 117, 153
Engine Accessory mode ................... 227
Compartment ........................ 591
Engine switch........................ 225
Exhaust gas precautions ........ 56
Hood ..................................... 588
How to start the hybrid system ......... ....................... 225
Identification number ............ 728
If the hybrid system will not start .............................. 706
If your vehicle has to be stopped in an emergency ... 647
Ignition switch (power switch) .................... 225
Overheating .......................... 717
Power switch......................... 225 Engine coolant
Capacity................................ 732
Checking............................... 595
Preparing and checking before winter ...................... 414
Engine oil Capacity................................ 730
Checking............................... 592
Oil pressure warning light ..... 655
Preparing and checking before winter ...................... 414
Engine switch .......................... 225 Auto power off function ......... 227
Changing the power switch modes ..................... 227
If your vehicle has to be stopped in an emergency ... 647
Starting the hybrid system .... 225
EPS (Electronic Power Steering)
Function ................................ 404
Warning light......................... 656
EV indicator ............................. 119
EV drive mode ......................... 231
Event data recorder
(EDR) ........................................ 11
Exhaust gas precautions .......... 56

792Alphabetical index
PRIUS_OM_OM47A29U_(U)
Navigation system*
Noise from under vehicle............ 8
Odometer.................................. 109
OilEngine oil .............................. 730
Opener
Fuel filler door ....................... 264
Hood ..................................... 588
Outside rear view mirrors ....... 196
Adjustment ............................ 196
Blind Spot Monitor ................ 322
Folding .................................. 196
Outside rear view mirror defoggers ........................... 517
Outside temperature
display .................................... 108
Overhead console ................... 532
Overheating.............................. 717
Overheating, Engine................ 717 P position switch ..................... 235
Panic mode .............................. 161
Parking assist sensors
Intelligent Clearance Sonar.................................. 346
Intuitive parking assist .......... 335
S-APGS (Simple Advanced Parking Guidance
System) .............................. 359
Parking brake Operation .............................. 241
Parking brake engaged
warning buzzer ................... 241
Parking lights
Light switch ........................... 242
Replacing light bulbs .... 638, 642
Wattage ................................ 736
Parking lock ............................. 235
PCS (Pre-Collision System) Enabling/disabling the
system .......... ...................... 279
Function ................................ 275
Warning light......................... 656
Personal lights......................... 525 Switch ................................... 526
Wattage ................................ 736
Power control unit coolant
Capacity................................ 732
Checking............................... 595
Preparing and checking before winter ...................... 414
Radiator ................................ 597
Power outlets ........................... 543
Power steering (Electric
Power Steering system) ....... 404Warning light......................... 656
N
O
P

798Alphabetical index
PRIUS_OM_OM47A29U_(U)
Warning buzzersBlind Spot Monitor (BSM) ..... 322
Brake system ....... ................. 655
Downshifting ......................... 236
Lane departure alert ............. 290
Open door ..................... 169, 657
Open moon roof .................... 204
Parking assist sensors ............... 335, 346, 359
Pre-Collision warning ............ 275
Radar cruise control.............. 309
Seat belt reminder ................ 658
Warning lights ABS....................................... 656
Brake Override System......... 658
Brake system ....... ................. 655
Charging system ................... 655
Drive-Start Control ................ 658
Driver’s seat belt reminder ............................. 658
Electronic engine control system ......... ....................... 655
Electric power steering ......... 656
Front passenger’s seat
belt reminder ...................... 658
High coolant temperature ..... 657
ICS OFF indicator ................. 657
Intelligent Clearance Sonar .................................. 658
LDA system .......................... 659
Low engine oil pressure ........ 655
Low fuel level ........................ 657
Malfunction indicator lamp .... 655
Master warning light.............. 658
Open door ............................. 657
PCS ...................................... 656
Seat belt reminder light ......... 658
Slip indicator ......................... 657
SRS ...................................... 656
Tire pressure......................... 658 Warning messages.................. 665
Warning reflector..................... 536
Washer
Checking............................... 603
Preparing and checking before winter ...................... 414
Switch ........................... 254, 260
Washing and waxing ............... 568
Water-repellent coating .......... 569
Weights Cargo capacity...................... 222
Load limits ............................ 726
What to do if... (Troubleshooting) ................. 778
Wheels ...................................... 618 Replacing wheels ................. 673
Size....................................... 734
Window glasses ...................... 198
Window lock switch ................ 198
Windows Power windows..................... 198
Rear window defogger.......... 517
Washer ......................... 254, 260
Windshield wipers ................... 254 Handling the wiper arms ....... 573
Winter driving tips ................... 414
Wiper rubber replacement ...... 624
Wireless charger ..................... 544
Wireless communication ........ 457
Wireless remote control key .......................................... 160Locking/Unlocking ................ 160
Panic mode........................... 161
Replacing the battery............ 628
WMA disc ................................. 440
W