2022 TOYOTA PRIUS check engine

250
PRIUS_OM_OM47F01U_(U)
4-2. Driving procedures
*: For good fuel economy and noise reduction, the D position should usually
be used.
 P. 3 4 2
■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
highlighted on the shift position
indicator.
■
Shifting the shift position from P to other positions
● While depressing the brake pedal f irmly, operate the shift lever. I f
the shift lever is operated withou t 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 pos i-
tion has been changed to the desired position by checking the
shift position indica tor provided on the in strument 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

252
PRIUS_OM_OM47F01U_(U)
4-2. Driving procedures
■Restraining sudden start (Drive-Start Control)
P. 224
■ Automatic P position selection function
In the following situations, the shift position is automaticall y changed to P.
● When pressing the power switch with the vehicle stopped while the power
switch is in ON mode and the shift position is in a position other than P (after
the shift position has changed to P, the power switch will turn off)
*
●If the driver’s door is opened and all of the following conditi ons are met,
while the shift position is in a position other than P
• The power switch is in ON mode.
• The driver is not wearing the seat belt.
• The brake pedal is not depressed.
To start off the vehicle after the shift position is changed to P, operate the
shift lever again.
*: When the power switch is pressed while driving at extremely slow speeds,
such as immediately before stopping the vehicle, the shift posi tion may
automatically change to P. Make sure that the vehicle is completely stopped
before pressing the power switch.
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 shift position cannot be shifted from P
There is a possibility that the 12-volt battery is discharged. Check the 12-volt
battery in this situation. ( P. 646)
■ About engine braking
When shift position B is selected, releasing the accelerator pe dal 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 t han that of other
vehicles.
● The vehicle can be accelerated even when shift position B is se lected.
If the vehicle is driven continuously in the B position, fuel e fficiency will
become low. Usually, select the D position.
■ After recharging/reconnecting the 12-volt battery
P. 521

PRIUS_OM_OM47F01U_(U)
4234-6. Driving tips
4
Driving
◆When braking
Make sure to operate the brakes gently and in a timely manner. A
greater amount of electrical energy can be regenerated when slow-
ing down.
◆Delays
Repeated acceleration and deceleration, as well as long waits a t
traffic lights, will lead to bad fuel economy. Check traffic re ports
before leaving and avoid delays as much as possible. When drivi ng
in a traffic jam, gently release the brake pedal to allow the v ehicle to
move forward slightly while avoiding overuse of the accelerator
pedal. Doing so can help control excessive gasoline consumption.
◆Highway driving
Control and maintain the vehicle at a constant speed. Before st op-
ping at a toll booth or similar, allow plenty of time to releas e the
accelerator and gently apply the brakes. A greater amount of el ec-
trical energy can be regenerated when slowing down.
◆Air conditioning
Use the air conditioning only when necessary. Doing so can help
reduce excessive gasoline consumption.
In summer: When the ambient tempe rature is high, use the recircu-
lated air mode. Doing so will help to reduce the burden on the air
conditioning system and reduce fuel consumption as well.
In winter: Because the gasolin e engine will not automatically cut out
until it and the interior of the vehicle are warm, it will cons ume fuel.
Also, fuel consumption can be improved by avoiding overuse of t he
heater.

424
PRIUS_OM_OM47F01U_(U)
4-6. Driving tips
◆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 large amounts of friction, their use on
dry roads can lead to poor fuel economy. Use tires that are app ro-
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 will cause the engine to repeat edly
warm up, which can lead to excess fuel consumption.

425
PRIUS_OM_OM47F01U_(U)
4-6. Driving tips
4
Driving
Winter driving tips
●Use fluids that are appropriate t o the prevailing outside tempera-
tures. • Engine oil
• Engine/power control unit coolant
• Washer fluid
● Have a service technician inspect 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 cha ins match
the size of the tires.
Perform the following accordi ng to the driving conditions:
● Do not try to forcibly open a window or move a wiper that is fr ozen.
Pour warm water over the frozen area to melt the ice. Wipe away
the water immediately to p revent 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 ic e 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. Always drive the vehicle in a ma n-
ner appropriate to the prevailing weather conditions.
Preparation for winter
Before driving the vehicle

491
PRIUS_OM_OM47F01U_(U)
6Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 492
Cleaning and protecting the vehicle interior ........... 498
6-2. Maintenance Maintenance requirements ................... 501
General maintenance........ 504
Emission inspection and maintenance (I/M)
programs......................... 507
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 508
Hood ................................. 511
Positioning a floor jack ...... 513
Engine compartment ......... 514
Tires .................................. 528
Tire inflation pressure ....... 537
Wheels .............................. 540
Air conditioning filter.......... 543
Cleaning the hybrid battery (traction battery) air intake
vent and filter .................. 546
Wiper insert replacement .................... 551
Electronic key battery........ 555
Checking and replacing fuses ............................... 558
Headlight aim .................... 561
Light bulbs......................... 563

504
PRIUS_OM_OM47F01U_(U)
6-2. 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 “Own er’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 s ervice shop for advice.
Engine compartment
ItemsCheck points
12-volt batteryCheck the connections. (P. 520)
Brake fluidIs the brake fluid at the correct level? ( P. 524)
Engine/power control
unit coolantIs the engine/power control unit coolant at the
correct level? (P. 518)
Engine oilIs the engine oil at the correct level? (P. 515)
Exhaust systemThere should not be any fumes or strange
sounds.
Radiator/condenserThe radiator and condenser should be free from
foreign objects. (P. 520)
Washer fluidIs there sufficient washer fluid? (P. 526)

506
PRIUS_OM_OM47F01U_(U)
6-2. 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 inflati on 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
(if equipped)
• 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.