2020 TOYOTA PRIUS C check engine

TABLE OF CONTENTS6
PRIUS c_U7-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 400
Cleaning and protecting the vehicle interior ........... 403
7-2. Maintenance Maintenance requirements ................... 409
General maintenance ........ 412
Emission inspection and maintenance (I/M)
programs ......................... 415
7-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 416
Hood.................................. 419
Positioning a floor jack ...... 421
Engine compartment ......... 422
12-volt battery ................... 431
Tires .................................. 435
Tire inflation pressure........ 444
Wheels .............................. 447
Air conditioning filter .......... 449
Wireless remote control/ electronic key battery ...... 451
Checking and replacing fuses ................ 454
Light bulbs ......................... 458 8-1. Essential information
Emergency flashers ........... 468
If your vehicle has to be stopped in
an emergency.................. 469
If the vehicle is trapped in rising water .................. 471
8-2. Steps to take in an emergency
If your vehicle needs to be towed ...................... 472
If you think something is wrong ........................... 479
If a warning light turns on or a warning buzzer
sounds ............................. 480
If a warning message is displayed...................... 488
If you have a flat tire .......... 505
If the hybrid system will not start ..................... 518
If the electronic key does not operate properly .......... 520
If the vehicle 12-volt
battery is discharged ....... 522
If your vehicle overheats.... 529
If the vehicle becomes stuck ................ 533
7Maintenance and care8When trouble arises

17Pictorial index
PRIUS c_UWindshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 214
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 274
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 221
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 221
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 538
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . P. 435
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . P. 543
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 274
Checking/rotation/tire pressur e warning system . . . . . . . . .P. 435
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 505
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 419
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 419
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 539
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 529
Headlights/daytime running lights . . . . . . . . . . . . . . . . . . . . P. 208
Parking lights/front turn signal lights . . . . . . . . . . . . . P. 206, 208
Side turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 206
Front fog lights
*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 212
Front side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 208
Stop lights/tail lights /rear side marker lights/
rear turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . P. 206, 208
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 208
4
5
6
7
Light bulbs of the exterior lights for driving
(Replacing method: P. 458, Watts: P. 544)
*: If equipped
8
9
10
11
12
13
14
15

1754-1. Before driving
4
Driving
PRIUS c_U
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When driving the vehicle
● During normal driving, do not turn off the hybrid system. Turni ng the hybrid
system off while driving will not cause loss of steering or bra king control,
however, power assist to the steering will be lost. This will m ake it more
difficult to steer smoothly, so you should pull over and stop t he vehicle as
soon as it is safe to do so.
In the event of an emergency, such as if it becomes impossible to stop the
vehicle in the normal way: P. 469
● Use engine braking (shift position B) to maintain a safe speed when driv-
ing down a steep hill.
Using the brakes continuously may cause the brakes to overheat and lose
effectiveness. ( P. 202)
● 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 sp eed limit per-
mits it, do not drive over 85 mph (140 km/h) unless your vehicl e has high-
speed capability tires. Driving over 85 mph (140 km/h) may resu lt 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 c apability
tires or not before driving at such speeds.

1764-1. Before driving
PRIUS c_U
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When driving on slippery road surfaces
● Sudden braking, acceleration and steering may cause tire slippa ge 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.
● After driving through a puddle, lightly depress the brake pedal to make
sure that the brakes are functioning properly. Wet brake pads m ay prevent
the brakes from functioning properly. If the brakes on only one side are wet
and not functioning properly, steering control may be affected.
■ When shifting the shift lever
● Do not let the vehicle roll backward while the shift lever is i n a driving posi-
tion, or roll forward while the shift lever is in R.
Doing so may result in an accident or damage to the vehicle.
● Do not shift the shift lever to P while the vehicle is moving.
Doing so can damage the transmission and may result in a loss o f vehicle
control.
● Do not shift the shift lever to R while the vehicle is moving f orward.
Doing so can damage the transmission and may result in a loss o f vehicle
control.
● Do not shift the shift lever to a driving position while the ve hicle is moving
backward.
Doing so can damage the transmission and may result in a loss o f vehicle
control.
● Shifting the shift lever to N while the vehicle is moving will disengage the
hybrid system. Engine braking is not available when N is select ed.
● Be careful not to shift the shift lever with the accelerator pe dal depressed.
Shifting the shift lever to any position other than P or N may lead to unex-
pected rapid acceleration of the vehicle that may cause an accident and
result in death or serious injury.
■ If you hear a squealing or scrap ing 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.

1774-1. Before driving
4
Driving
PRIUS c_U
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When the vehicle is stopped
● Do not depress the accelerator pedal unnecessarily.
If the shift lever is in any position other than P or N, the vehicle may accel-
erate suddenly and unexpectedly, causing an accident.
● Do not leave the vehicle with the hybrid system on for a long t ime.
If such a situation cannot be avoided, park the vehicle in an o pen space
and check that exhaust fumes do not enter the vehicle interior.
● In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while stopped with the “READY” indic ator is
illuminated, and apply the parking brake as necessary.
● If the vehicle is stopped on an incline, in order to prevent ac cidents 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 m ay cause
the exhaust system to overheat, which could result in a fire if combustible
material is nearby.

1804-1. Before driving
PRIUS c_U
NOTICE
■Avoiding damage to vehicle parts
● Do not turn the steering wheel fully in either direction and ho ld it there for
an extended period of time.
Doing so may damage the power steering motor.
● When driving over bumps in the road, drive as slowly as possibl e to avoid
damaging the wheels, underside of the vehicle, etc.
■ If you get a flat tire while driving
A flat or damaged tire may cause the following situations. Hold the steering
wheel firmly and gradually depress the brake pedal to slow down the vehi-
cle.
● It may be difficult to control your vehicle.
● The vehicle will make abnormal sounds or vibrations.
● The vehicle will lean abnormally.
Information on what to do in case of a flat tire ( P. 505)
■ When encountering flooded roads
Do not drive on a road that has flooded after heavy rain etc. D oing so may
cause the following serious damage to the vehicle:
● Engine stalling
● Short in electrical components
● Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle i s flooded, be
sure to have your Toyota dealer check the following:
● Brake function
● Changes in quantity and quality of oil and fluid used for the e ngine, hybrid
transmission, etc.
● Lubricant condition for the bearings and suspension joints (whe re possi-
ble), and the function of all joints, bearings, etc.

188
PRIUS c_U
4-2. Driving procedures
Check that the parking brake is set.
Check that the shift lever is in P.
Firmly depress the brake pedal.
Turn the power switch to the
“START” position to start the
hybrid system.
If the “READY” indicator turns on,
the hybrid system will operate nor-
mally.
Continue depressing the brake
pedal until the “READY” indicator
is illuminated.
Check that the “R EADY” indicator is illuminated.
If the “READY” indicator changes from a flashing light to a solid light and a
beep sound, 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 t he engine
is stopped. (The engine starts or stops automatically in accord ance with
the state of the vehicle.)
Power (ignition) switch (vehicles without a
smart key system)
Starting the hybrid system
1
2
3
4
5

1934-2. Driving procedures
4
Driving
PRIUS c_U
Check that the “READY” indicator is illuminated.
If the “READY” indicator changes from a flashing light to a solid light and a
beep sound, 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 t he engine
is stopped. (The engine starts or stops automatically in accord ance with
the state of the vehicle.)
Stop the vehicl e completely.
Set the parking brake ( P. 207), and shift the shift lever to P.
Press the power switch.
Release the brake pedal and c heck that on the multi-infor-
mation display is off.
Modes can be changed by pressing the power switch with brake pe dal
released. (The mode changes each time the switch is pressed.)
Off
*
The emergency flashers can be
used.
ACCESSORY mode
Some electrical components such
as the power outlet can be used.
will be displayed on the
multi-information display.
ON mode
All electrical components can be
used.
will be displayed on the
multi-information display.
*: If the shift lever is in a position other than P when turning off the hybrid sys-
tem, the power switch will be turned to ACCESSORY mode, not to off.
Stopping the hybrid system
Changing power switch modes
5
1
2
3
4
1
2
3