power steering TOYOTA PRIUS 2020 (in English) Owner's Manual

569
PRIUS_OM_OM47D44U_(U)
7
When trouble arises
7-1. Essential information
If your vehicle has to be stopped in an
emergency
Steadily step on the brake pedal with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase th e effort
required to slow the vehicle.
Shift the shift position to N.
If the shift positi on is shifted to N
After slowing down, stop the vehi cle in a safe place by the road.
Stop the hybrid system.
If the shift position c annot be shifted to N
Keep depressing the brake pedal with both feet to reduce vehicl e
speed as much as possible.
To stop the hybrid system,
press and hold the power
switch for 2 consecutive sec-
onds or more, or press it briefly
3 times or more in succession.
Stop the vehicle in a s afe place by the road.
Only in an emergency, such as if it becomes impossible to stop
the vehicle in the normal way, st op the vehicle using the follow-
ing procedure:
1
2
3
4
3
Press and hold for 2 seconds or
more, or press briefly 3 times or
more
4
WARNING
■ If the hybrid system has to be turned off while driving
Power assist for the steering wheel will be lost, making the steering wheel
heavier to turn. Decelerate as m uch as possible before turning off the hybrid
system.
5

5767-2. Steps to take in an emergency
PRIUS_OM_OM47D44U_(U)
■While towing
If the hybrid system is off, the power assist for the brakes an d steering will not
function, making steering and braking more difficult.
■ Wheel nut wrench
Wheel nut wrench is installed in luggage compartment. (P. 601, 620)
■ Towing eyelet installation hole on the rear of the vehicle
The hole is equipped for fastening the
vehicle while shipping. Your vehicle can-
not tow another vehicle.

5817-2. Steps to take in an emergency
PRIUS_OM_OM47D44U_(U)
7
When trouble arises
SRS warning lightIndicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
 Have the vehicle inspected by your Toyota dealer
immediately.
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system
 Have the vehicle inspected by your Toyota dealer
immediately.
(Red/yellow)
Electric power steering system warning light (warning
buzzer)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
 Have the vehicle inspected by your Toyota dealer
immediately.
(Flashes or
illuminates)
(If equipped)
PCS warning light
Indicates a malfunction in the PCS (Pre-Collision System)
or that the system is temporarily unavailable due to the
vehicle being extremely hot/cold, or dirt around a front
sensor, etc.
 Follow the instructions dis played on the multi-infor-
mation display. ( P. 303, 596)
If the PCS (Pre-Collision System) or VSC (Vehicle Stability
Control) system is disabled, the PCS warning light will illu-
minate.
 P. 303
Slip indicator light
Indicates 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.
Warning lightWarning light/Details/Actions

5867-2. Steps to take in an emergency
PRIUS_OM_OM47D44U_(U)
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front door), side impact sensors (rear), driver’s
seat belt buckle switch, front passenger occupant classificatio n system (ECU
and sensors), “AIR BAG ON” indicator light, “AIR BAG OFF” indic ator light,
front passenger’s seat belt buckle switch, seat belt pretension ers, airbags,
interconnecting wiring and power sources. ( P. 36)
■ Front passenger detection sensor, seat belt reminder and warnin g
buzzer
● If luggage is placed on the front passenger seat, the front pas senger detec-
tion sensor may cause the warning light to flash and the warnin g buzzer to
sound even if a passenger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.
■ Electric power steering system wa rning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the vol tage tempo-
rarily drops, the electric power steering system warning light may come on
and the warning buzzer may sound.
■ If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
● Is the fuel tank cap loose?
If it is, tighten it securely.
The malfunction indicator lamp will go off after several drivin g trips.
If the malfunction indicator lamp does not go off even after several trips, con-
tact your Toyota dealer as soon as possible.

5887-2. Steps to take in an emergency
PRIUS_OM_OM47D44U_(U)
WARNING
■When the electric power steering system warning light comes on
When the light comes on yellow, the assist to the power steering is
restricted. When the light comes on red, the assist to the power steering is
lost and handling operations of the steering wheel become extre mely
heavy. When steering wheel operations are heavier than usual, grip the
steering wheel firmly and operate it using more force than usua l.
■
If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could
cause a loss of vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire
inflation pressure immediately.
●Vehicles with emergency tire puncture repair kit: If the tire p ressure
warning light comes on even after tire inflation pressure adjus tment, it
is probable that you have a flat tire. Check the tires. If a ti re is flat,
repair the flat tire by using emergency tire puncture repair ki t.
●Vehicles with spare tire: If the tire pressure warning light co mes on
even after tire inflation pressure adjustment, it is probable t hat you
have a flat tire. Check the tires. If a tire is flat, change it with the spare
tire and have the flat tire repaired by the nearest Toyota deal er.
●Avoid abrupt maneuvering and braking. If the vehicle tires dete riorate,
you could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

5967-2. Steps to take in an emergency
PRIUS_OM_OM47D44U_(U)■
If “Shift to Before Exiting Vehicle” is shown
Message is displayed when the driver’s door is opened without t urning the
power switch to off with the shift position in any position oth er than P.
Shift the shift position to P.
■ If “Shift is in Release Accelerat or Before Shifting” is shown
Message is displayed when the accelerator pedal has been depressed and
the shift position is in N.
Release the accelerator pedal and shift the shift position to D or R.
■ If “Depress Brake When Vehicle is Stopped. Hybrid System may Ov er-
heat.” is shown
The message may be shown when the accelerator pedal is depresse d to hold
the vehicle while the vehicle is stopped on an uphill, etc.
The hybrid system may overheat. Release the accelerator pedal a nd depress
the brake pedal.
■ If “Auto Power OFF to Conserve Battery” is shown
The power switch has been turned off by the automatic power off function.
When starting the hybrid system next time, operate the hybrid s ystem for
approximately 5 minutes to recharge the 12-volt battery.
■ If “Engine Oil Level Low Add or Replace” is displayed
The engine oil level may be low. Check the level of the engine oil, and add
engine oil if necessary. This message may be displayed if the vehicle is
stopped on a slope. Move the vehicle to a level surface and che ck if the mes-
sage disappears.
■ If “Accelerator and Brake Pedals D epressed Simultaneously” is shown
The accelerator and brake pedals are being depressed simultaneo usly.
( P. 225)
Release the accelerator pedal and depress the brake pedal.
■ If “Front Camera Unavailable See Owner’s Manual” or “Front Came ra
Unavailable” is displayed. *
The following systems may be suspended until the problem shown in the
message is resolved. ( P. 303, 580)
● PCS (Pre-Collision System)
*
●LDA (Lane Departure Alert with steering control)*
●Dynamic radar cruise control with full-speed range*
●Automatic High Beam*
*
: If equipped
■ If “Cruise Control not Available” is shown
The dynamic radar cruise control with full-speed range cannot b e used tem-
porarily. Use the system when it becomes available again.

6177-2. Steps to take in an emergency
PRIUS_OM_OM47D44U_(U)
7
When trouble arises
WARNING
■Driving to spread the liquid sealant evenly
Observe the following precautions to reduce the risk of accidents.
Failing to do so may result in a loss of vehicle control and ca use death
or serious injury.
●Drive the vehicle carefully at a low speed. Be especially careful when
turning and cornering.
●If the vehicle does not drive straight or you feel a pull throu gh the
steering wheel, stop the vehicle and check the following.
• Tire condition. The tire may have separated from the wheel.
• Tire inflation pressure. If the tire inflation pressure is 19 p si
(130 kPa, 1.3 kgf/cm
2 or bar) or less, the tire may be severely dam-
aged.
NOTICE
■When performing an emergency repair
●A tire should only be repaired with the emergency tire puncture repair
kit if the damage is caused by a sharp object such as nail or screw
passing through the tire tread.
Do not remove the sharp object from the tire. Removing the obje ct may
widen the opening and disenable e mergency repair with the repair kit.
●The repair kit is not waterproof. Make sure that the repair kit is not
exposed to water, such as when it is being used in the rain.
●Do not put the repair kit directly onto dusty ground such as sa nd at the
side of the road. If the repair kit vacuums up dust etc., a mal function
may occur.
■Precautions for the emergency tire puncture repair kit
●The repair kit power source should be 12 V DC suitable for vehi cle
use. Do not connect the repa ir kit to any other source.
●If fuel splatters on the repair kit, the repair kit may deterio rate. Take
care not to allow fuel to contact it.
●Place the repair kit in a storage to prevent it from being exposed to dirt
or water.
●Store the repair kit in the luggage compartment out of reach of chil-
dren.
●Do not disassemble or modify the repair kit. Do not subject par ts such
as the air pressure indicator to impacts. This may cause a malfunction.

672
PRIUS_OM_OM47D44U_(U)
8-1. Specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressure
Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressureThe maximum cold inflated pressure to which
a tire may be inflated, shown on the sidewall
of the tire
Recommended
inflation pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of hybrid
transmission, power steering, power brakes,
power windows, power seats, radio and
heater, to the extent that these items are avail-
able as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded
vehicle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
*
that follows
Occupant distributionDistribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below

714Alphabetical index
PRIUS_OM_OM47D44U_(U)
DoorsAutomatic door locking and
unlocking system ................ 184
Back door.............................. 187
Door glasses ......................... 214
Door lock............................... 181
Open door warning buzzer ... 185
Open door warning light........ 582
Outside rear view mirrors...... 212
Rear door child-protectors .... 184
Side doors............................. 181
Side windows ........................ 214
Drive information ..................... 124
Drive-Start Control .................. 226
Driver’s seat belt reminder light......................................... 582
Driving ...................................... 224
Break-in tips .......................... 226
Correct driving posture ........... 28
Driving in the rain .................. 225
Driving mode select switch ... 336
Hybrid vehicle driving tips ..... 415
Procedures ........................... 224
Winter drive tips .................... 418
Dynamic radar cruise control with full-speed range ............ 315
ECB (Electronically Controlled Brake System) .... 408
Eco drive mode ........................ 336
EDR (Event data recorder) ........ 11
Electric motor (traction motor) Location .................................. 83
Specification ......................... 655 Electric Power Steering
(EPS) ...................................... 409
Function ................................ 409
Warning light......................... 581
Electronic key .......................... 176
Battery-saving function ......... 194
If the electronic key does not operate properly ........... 635
Replacing the battery............ 548
Electronically Controlled Brake System (ECB) ............. 408
Emergency flashers ................ 568
Emergency tire puncture repair kit ................................. 601
Emergency, in case of If a warning buzzer sounds... 580
If a warning light turns on ..... 580
If a warning message is displayed ............................ 591
If the 12-volt battery is
discharged.......................... 638
If the electronic key does not operate properly ........... 635
If the hybrid system will not start .............................. 633
If the vehicle becomes stuck ................................... 649
If the vehicle is trapped in rising water ......................... 570
If you have a flat tire ..... 599, 619
If you lose your keys ..... 177, 180
If you think something is wrong .............................. 579
If your vehicle has to be stopped in an emergency ... 569
If your vehicle needs to be
towed.................................. 572
If your vehicle overheats....... 644
Energy monitor ........ 125, 162, 169
E

715Alphabetical index
PRIUS_OM_OM47D44U_(U)
Engine....................................... 654Accessory mode ................... 243
Compartment ........................ 506
Engine switch (power switch) ................................ 241
Exhaust gas precautions ........ 55
Hood ..................................... 503
How to start the hybrid system ......... ....................... 241
Identification number ............ 654
If the hybrid system will not start .............................. 633
If your vehicle has to be stopped in an emergency ... 569
Ignition switch (power switch) ................................ 241
Overheating .......................... 644
Power switch......................... 241
Engine coolant ......................... 510 Capacity ................................ 658
Checking ............................... 510
Preparing and checking before winter....................... 418
Engine oil ................................. 507 Capacity ................................ 656
Checking ............................... 507
Oil pressure warning light ..... 580
Preparing and checking before winter....................... 418
Engine switch (power
switch) .................................... 241 Auto power off function ......... 243
Automatic hybrid system shut off feature ........................... 245
Changing the power switch modes................................. 243
If your vehicle has to be stopped in an emergency ... 569
Starting the hybrid system .... 241 EPS (Electronic Power
Steering) ................................ 409
Function ................................ 409
Warning light......................... 581
EV drive mode ......................... 248
EV indicator ............................. 127
Event data recorder (EDR)........ 11
Exhaust gas precautions .......... 55
Flat tire ............................. 599, 619
Floor mat .................................... 26
Fluid Brake .................................... 659
Transmission ........................ 659
Washer ................................. 518
Fog lights ................................. 269
Replacing light bulbs ............ 565
Switch ................................... 269
Footwell lights ......................... 446
Front doors .............................. 181
Front fog lights ........................ 269 Replacing light bulbs ............ 565
Switch ................................... 269
Front passenger occupant classification system .............. 50
Front passenger’s seat belt
reminder light ........................ 582
Front seats ............................... 200 Adjustment............................ 200
Cleaning ............................... 490
Correct driving posture ........... 28
Head restraints ..................... 205
Seat heaters ......................... 444
Front side marker lights ......... 259 Light switch ........................... 259
Replacing light bulbs ............ 559
Wattage ................................ 662
F