2018 TOYOTA PRIUS check engine

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PRIUS_OM_OM47B89U_(U)
4-2. Driving procedures
4
Driving
Power (ignition) switch
Check that the parking brake is set.
Firmly depress the brake pedal.
and a message will be dis-
played on the multi-information dis-
play.
When the shift position is N, the
hybrid system cannot start. Shift
the shift position to P when starting
the hybrid system. ( →P. 241)
Press the power switch shortly
and firmly.
When operating the power switch,
one short, firm press is enough. It
is not necessary to press and hold
the switch.
If the “READY” indicator turns on,
the hybrid system will operate nor-
mally.
Continue depressing the brake pedal until the “READY” indicator is illumi-
nated.
The hybrid system can be started from any power switch mode.
Check that the “READY” indicator is illuminated.
If the “READY” indicator changes from a flashing light to a solid light and
the buzzer sounds, the hybrid system is starting normally.
The vehicle will not move when the “READY” indicator is off.
The vehicle can move when the “READY” indicator is on even if the engine
is stopped. (The gasoline engine starts or stops automatically in accor-
dance with the state of the vehicle.)
Performing the following operati ons when carrying the elec-
tronic key on your person starts the hybrid system or changes
power switch modes.
Starting the hybrid system
1
2
3
4

PRIUS_OM_OM47B89U_(U)
2414-2. Driving procedures
4
Driving
*: For good fuel economy and noise reduction, the D position should usuallybe used.
→ P. 3 2 4
■When shifting the shift position to P
Fully stop the vehicle and set
the parking brake, and then
press the P position switch.
When the shift position is
changed to P, the switch indica-
tor comes on.
Check that the P position is illu-
minated on the shift position
indicator.
■
Shifting the shift position from P to other positions
● While depressing the brake pedal firmly, operate the shift lever. If
the shift lever is operated without depressing the brake pedal, the
buzzer will sound and the shifting operation will be disabled.
● When selecting the shift position, make sure that the shift posi-
tion has been changed to the desired position by checking the
shift position indicator provided on the instrument cluster.
● The shift position cannot be changed from P to B directly.
Shift position purpose
Shift positionObjective or function
PParking the vehicle/starting the hybrid system
RReversing
NNeutral
(Condition in which the power is not transmitted)
DNormal driving*
B
Applying engine braking or strong braking when the
accelerator pedal has been released on steep down-
ward slopes etc.
Selecting a driving mode
P position switch

PRIUS_OM_OM47B89U_(U)
2434-2. Driving procedures
4
Driving
■Restraining sudden star t (Drive-Start Control)
When the following unusual operation is performed, the hybrid system output
may be restrained.
● When the shift position is shifted from R to D, D/B to R, N to R, P to D, P to
R with the accelerator pedal depressed, a warning message appears on the
multi-information display. If a warning message is shown on the multi-infor-
mation display, read the message and follow the instructions.
● When the accelerator pedal is depressed too much while the vehicle is in
reverse.
■ Automatic P position selection function
●If the power switch is on and the shift position is not already P, completely
stopping the vehicle and pressing the power switch causes the shift posi\
tion
to automatically switch to P and the power switch to turn off
*.
● The shift position may also automatically switch to P if one of the following
conditions is detected while the vehicle is stopped by dynamic radar cruise
control with full-speed range (if equipped).
• Driver’s seat belt is not fastened
• Driver’s door is opened
• Approximately 3 minutes elapse after the vehicle stopped
*: If the power switch is pressed when driving at very low speeds (for exam-
ple, just before the vehicle stops), the shift position may automatically
switch to P. Press the power switch after completely stopping the vehicle
to prevent unexpected sudden stopping of the vehicle.
■ If the shift position can not be shifted from P
There is a possibility that the 12-volt battery is discharged. Check the 12-volt
battery in this situation. ( →P. 729)
■ About engine braking
When shift position B is selected, releasing the accelerator pedal will apply
engine braking.
●When the vehicle is driven at high speeds, compared to ordinary gasoline-
fueled vehicles, the engine braking deceleration is felt less than that of other
vehicles.
● The vehicle can be accelerated even when shift position B is selected.
If the vehicle is driven continuously in the B position, fuel efficiency will
become low. Usually, select the D position.
■ After recharging/reconnect ing the 12-volt battery
→P. 6 1 1

PRIUS_OM_OM47B89U_(U)
4174-6. Driving tips
4
Driving
◆Checking tire inflation pressure
Make sure to check the tire inflation pressure frequently. Improper
tire inflation pressure can cause poor fuel economy.
Also, as snow tires can cause larg e amounts of friction, their use on
dry roads can lead to poor fuel economy. Use tires that are appro-
priate for the season.
◆Luggage
Carrying heavy luggage will lead to poor fuel economy. Avoid carry-
ing unnecessary luggage. Installing a large roof rack will also cause
poor fuel economy.
◆Warming up before driving
Since the gasoline engine starts up and cuts out automatically
when cold, warming up the engine is unnecessary. Moreover, fre-
quently driving short distances wi ll cause the engine to repeatedly
warm up, which can lead to excess fuel consumption.

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4-6. Driving tips
Winter driving tips
●Use fluids that are appropriate to the prevailing outside tempera-
tures. • Engine oil
• Engine/power control unit coolant
• Washer fluid
● Have a service technician inspec t the condition of the 12-volt bat-
tery.
● Have the vehicle fitted with four snow tires or purchase a set of tire
chains for the front tires.
Ensure that all tires are the same size and brand, and that chains match
the size of the tires.
Perform the following accordin g to the driving conditions:
● Do not try to forcibly open a window or move a wiper that is frozen.
Pour warm water over the frozen area to melt the ice. Wipe away
the water immediately to prevent it from freezing.
● To ensure proper operation of the climate control system fan,
remove any snow that has accumulated on the air inlet vents in
front of the windshield.
● Check for and remove any excess ice or snow that may have accu-
mulated on the exterior lights, vehicle’s roof, chassis, around the
tires or on the brakes.
● Remove any snow or mud from the bottom of your shoes before
getting in the vehicle.
Carry out the necessary preparations and inspections before
driving the vehicle in winter. Al ways drive the vehicle in a man-
ner appropriate to the prevailing weather conditions.
Preparation for winter
Before driving the vehicle

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7Maintenance and care
7-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 582
Cleaning and protecting the vehicle interior ........... 588
7-2. Maintenance Maintenance requirements ................... 591
General maintenance........ 594
Emission inspection and maintenance (I/M)
programs......................... 597
7-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 598
Hood ................................. 601
Positioning a floor jack ...... 603
Engine compartment ......... 604
Tires .................................. 618
Tire inflation pressure ....... 628
Wheels .............................. 631
Air conditioning filter.......... 634
Hybrid battery (traction battery) air intake vent .... 637
Wiper rubber replacement .................... 642
Electronic key battery........ 646
Checking and replacing fuses ............................... 649
Headlight aim .................... 652
Light bulbs......................... 654

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7-2. Maintenance
General maintenance
Listed below are the general maintenance items that should be
performed at the intervals specified in the “Owner’s Warranty
Information Booklet” or “Owner’s Manual Supplement/Sched-
uled Maintenance Guide”. It is recommended that any problem
you notice should be brought to the attention of your Toyota
dealer or qualified service shop for advice.
Engine compartment
ItemsCheck points
12-volt batteryCheck the connections. (→P. 611)
Brake fluidIs the brake fluid at the correct level? ( →P. 614)
Engine/power control
unit coolantIs the engine/power control unit coolant at the
correct level? (→P. 608)
Engine oilIs the engine oil at the correct level? (→P. 605)
Exhaust systemThere should not be any fumes or strange
sounds.
Radiator/condenserThe radiator and condenser should be free from
foreign objects. (→P. 610)
Washer fluidIs there sufficient washer fluid? (→P. 616)

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7-2. Maintenance
Vehicle exterior
ItemsCheck points
Doors• Do the doors operate smoothly?
Engine hood• Does the engine hood lock system work prop-erly?
Fluid leaks• There should not be any signs of fluid leakageafter the vehicle has been parked.
Tires
• Is the tire inflation pressure correct?
• The tires should not be damaged or exces-sively worn.
• Have the tires been rotated according to the
maintenance schedule?
• The wheel nuts should not be loose.
Windshield wipers/
rear window wiper
• The wiper blades should not show any signs
of cracking, splitting, wear, contamination or
deformation.
• The wiper blades should clear the windshield/
rear window without streaking or skipping.
WARNING
■If the hybrid system is operating
Turn the hybrid system off and ensure that there is adequate ventilation
before performing maintenance checks.