2015 TOYOTA PRIUS power steering

200 2-1. Driving procedures
PRIUS_OM_OM47A17U_DVD_(U)
■When the shift control system malfunctions
The “POWER” switch will not be able to be turned off. In such a case, the
switch can be turned off after applying the parking brake.
Have the vehicle inspected by your Toyota dealer immediately.
■ Ending display
When the “POWER” switch is turned off, each of the following will be dis-
played on the multi-information display, and will extinguish after approxi-
mately 30 seconds.
●The driving distance, driving time, consumption and eco savings since
the hybrid system was started*
● The odometer
● The clock
*: The amount of money saved or spent, selected on the Eco savings record
display ( P. 56), is displayed.
CAUTION
■When starting the hybrid system
Always start the hybrid system while sitting in the driver’s seat. Do not
depress the accelerator pedal while starting the hybrid system under any cir-
cumstances.
Doing so may cause an accident resulting in death or serious injury.
■ Stopping the hybrid system in an emergency
If you want to stop the hybrid system in an emergency while driving the vehi-
cle, press and hold the “POWER” switch for more than 2 seconds, or press it
briefly 3 times or more in succession. ( P. 569)
However, do not touch the “POWER” switch while driving except in an emer-
gency. Turning the hybrid system off while driving will not cause loss of
steering or braking control, however, power assist to the steering will be lost.
This will make it more difficult to steer smoothly, so you should pull over and
stop the vehicle as soon as it is safe to do so.

301
2-4. Using other driving systems
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2
When driving
Driving assist systems
To help enhance driving safety and performance, the following sys-
tems operate automatically in res ponse to various driving situations.
Be aware, however, that these systems are supplementary and
should not be relied upon too heavi ly when operating the vehicle.
■ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly, or if
the brakes are applied while driving on a slippery road surface
■Brake assist
Generates an increased level of braking force after the brake pedal is
depressed when the system detects a panic stop situation
■VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning
on slippery road surfaces
■TRAC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from spin-
ning when starting the vehicle or accelerating on slippery roads
■EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn
the steering wheel
■Enhanced VSC (Enhanced Vehicle Stability Control)
Provides cooperative control of the ABS, TRAC, VSC and EPS.
Helps to maintain directional stability when swerving on slippery road
surfaces by controlling steering performance.

303
2-4. Using other
driving systems
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2
When driving
■Sounds and vibrati ons caused by the ABS, brake assist, VSC and
TRAC
● A sound may be heard from the engine compartment when the hybrid
system is started, just after the vehicle begins to move, if the brake pedal
is depressed forcefully or repeatedly, or 1-2 minutes after the hybrid sys-
tem is stopped. This sound does not indicate that a malfunction has
occurred in any of these systems.
● Any of the following conditions may occur when the above systems are
operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
■ EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may
be heard. This does not indicate a malfunction.
■ Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from
overheating when there is frequent steering input over an extended period of
time. The steering wheel may feel heavy as a result.
* Should this occur,
refrain from excessive steering input or stop the vehicle and turn the hybrid
system off. The EPS system should return to normal within 10 minutes.
*: If the LKA (Lane-Keeping Assist) system (if equipped) cannot operate in this case, a warning message will be shown on the multi-information dis-
play.
■ Electric power steering system warning light (warning buzzer)
P. 5 1 1

Interior features3
331
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3-1. Using the air conditioning system and defogger
Air conditioning system ........................... 332
Using the steering wheel climate remote control
switches ......................... 343
Solar Ventilation System ........................... 345
Remote Air Conditioning System ........................... 348
Rear window and outside rear view mirror
defoggers switch ............ 352
3-2. Using the audio system Audio system types .......... 353
Using the AUX port/USB port ........................ 358 3-3. Using the interior lights
Interior lights list ............... 359
• Front interior lights ......... 360
• Personal lights ............... 361
• Rear interior light ........... 361
3-4. Using the storage features List of storage features .......................... 363
• Glove boxes ................... 364
• Console box ................... 365
• Cup holders ................... 366
• Bottle holders ................. 368
• Auxiliary boxes ............... 369
3-5. Other interior features Sun visors ........................ 370
Vanity mirrors ................... 371
Outside temperature display............................ 372
Power outlets ................... 373
Seat heaters..................... 375
Armrest ............................ 377
Assist grips....................... 378
Floor mats ........................ 379
Luggage compartment features .......................... 381
Garage door opener......... 387
Safety Connect ................ 395

470 4-3. Do-it-yourself maintenance
PRIUS_OM_OM47A17U_DVD_(U)
FUSEAmpereCircuit
12 P CON MAIN 7.5A Shift control system, P position
switch
13 AM2 7.5A Power management system
14 ECU-B2 7.5A Smart key system, hybrid system
15 MAYDAY 10A MAYDAY
16 ECU-B3 10A Air conditioning system
17 TURN & HAZ 10A Turn signal lights
18 ETCS 10AMultiport fuel injection system/
sequential multiport fuel injection
system
19 ABS MAIN
NO.1 20A Anti-lock brake system
20 H-LP LH LO 15A Left-hand headlight (low beam)
21 P/I 2 40AShift control system, horn, head-
light low beams, back-up lights
22 ABS MTR 1 30A Anti-lock brake system
23 ABS MTR 2 30A Anti-lock brake system
24 H-LP HI MAIN 20A Headlight high beams, daytime
running lights
25 DRL 7.5A Daytime running lights
26 AMP NO.2 30A Audio system, navigation system
27 P/I 1 60A IG2, EFI MAIN, BATT FAN
28 EPS 60A Electric power steering
29 H-LP RH LO 15A Right-hand headlight (low beam)
30 PCU 10A Inverter and converter

474 4-3. Do-it-yourself maintenance
PRIUS_OM_OM47A17U_DVD_(U)
FUSEAmpereCircuit
14 STOP 10A Stop lights, high mounted stop-
light, brake system, driver support
system, vehicle proximity notifica-
tion system
15 P FR DOOR 25A Power windows
16 D FR DOOR 25A Power windows
17 DOOR RR 25A Power windows
18 DOOR RL 25A Power windows
19 S/ROOF 30A Moon roof
20 ECU-IG NO.1 10A Electric cooling fans, multiplex
communication system, vehicle
proximity notification system
21 ECU-IG NO.2 10A Driver support system, Pre-Colli-
sion System, LKA system, inside
rear view mirror, garage door
opener, yaw rate & G sensor,
brake system, electric power
steering, navigation system, moon
roof, tire pressure warning system,
seat belt pretensioners, audio sys-
tem, emergency flashers, turn sig-
nal lights, windshield wipers,
headlight cleaner
22 GAUGE 10AHeadlight leveling system, gauges
and meters, emergency flashers,
turn signal lights
23 A/C 10AAir conditioning system, Solar
Ventilation System, Remote Air
Conditioning System

5
When trouble arises
499
5-1. Essential information
PRIUS_OM_OM47A17U_DVD_(U)
Tighten down the towing eyelet
securely using a wheel nut
wrench or hard metal bar.
Securely attach a cable or chain to the towing eyelet.
Take care not to damage the vehicle body.
Enter the vehicle being towed and start the hybrid system.
If the hybrid system does not start, turn the “POWER” switch to ON
mode.
Shift the shift position to N and release the parking brake.
STEP 4
■ While towing
If the hybrid system is off, the power assist for the brakes and steering will
not function, making steering and braking more difficult.
■ Wheel nut wrench
Wheel nut wrench is installed under the center auxiliary box. ( P. 537)
STEP 5
STEP 6
STEP7

5
When trouble arises
505
5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(U)
Have the vehicle inspected by your Toyota dealer immediately.
Failure to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.
Warning lightWarning light/Details
(U.S.A.)
(Canada) Malfunction indicator lamp
Indicates a malfunction in:
• The hybrid system;
• The electronic engine control system; or
• The electronic throttle control system
SRS warning light Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system
Electric power steering syst em warning light (warn-
ing buzzer) Indicates a malfunction in the EPS system