power steering TOYOTA PRIUS PHV 2012 User Guide

330 2-4. Using other driving systems
PRIUS PHV_OM_OM47818U_(U)
■Sounds and vibrations 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.
■ Electric power steering system warning light
 P. 540

Interior features3
357
PRIUS PHV_OM_OM47818U_(U)
3-1.Using the air conditioning
system
and defogger
Air conditioning system .... 358
Using the steering wheel climate remote control
switches ......................... 369
Remote Air Conditioning System ........................... 371
Rear window and outside rear view mirror defoggers
switch ............................. 375
3-2. Using the audio system Audio system types .......... 376
Using the AUX port/USB port................................. 381
3-3. Using the interior lights Interior lights list ............... 382
• Front interior lights ......... 383
• Personal lights ............... 383
• Rear interior light ........... 384 3-4. Using the storage features
List of storage features .... 385
• Glove boxes ................... 386
• Console box ................... 387
• Cup holders ................... 388
• Bottle holders ................. 390
• Auxiliary boxes ............... 391
3-5. Other interior features Sun visors ........................ 392
Vanity mirrors ................... 393
Outside temperature display............................ 394
Power outlets ................... 395
Seat heaters..................... 397
Armrest ............................ 399
Assist grips....................... 400
Floor mats ........................ 401
Luggage compartment features .......................... 403
Garage door opener......... 407
Safety Connect ................ 415

499
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
4
Maintenance and care
FUSEAmpereCircuit
11 IGCT 30A PCU, IGCT NO.2, IGCT NO.3
12 DC/DC-S 5A Inverter and converter
13 P CON MAIN 7.5A P position control system, P posi-
tion switch
14 AM2 7.5A Power management system
15 ECU-B2 7.5A Smart key system, hybrid system
16 MAYDAY/DCM 10A MAYDAY/DCM
17 PIMR 10A Charge system
18 TURN & HAZ 10A Turn signal lights
19 ETCS 10AMultiport fuel injection system/
sequential multiport fuel injection
system
20 ABS MAIN
NO.1 20A Anti-lock brake system
21 H-LP LH LO 15A Left-hand headlight (low beam)
22 P/I 2 40AP position control system, horn,
headlight low beams, back-up
lights
23 ABS MTR 1 30A Anti-lock brake system
24 ABS MTR 2 30A Anti-lock brake system
25 H-LP HI MAIN 20A Headlight high beams, daytime
running lights
26 DRL 7.5A Daytime running lights
27 AMP NO.2 30A Audio system, navigation system
28 P/I 1 60A IG2, EFI MAIN, BATT FAN
29 EPS 60A Electric power steering

530 5-1. Essential information
PRIUS PHV_OM_OM47818U_(U)
CAUTION
■Caution while towing
● Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive
stress on the emergency towing eyelets and the cables or chains. Always
be cautious of the surroundings and other vehicles while towing.
● Do not turn the “POWER” switch off.
This may lead to an accident as the front wheels will be locked by the
parking lock.
● If the hybrid system is off, the power assist for the brakes and steering will
not function, making steering and braking more difficult.
■ Installing towing eyelets to the vehicle
Make sure that towing eyelets are installed securely.
If not securely installed, towing eyelets may come loose during towing. This
may lead to accidents that cause serious injury or even death.

5
When trouble arises
535
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(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

540 5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
■Electric power steering system warning light
When the 12-volt battery charge becomes insufficient or the voltage tempo-
rarily drops, the electric power steering system warning light may come on.
■ If the malfunction indicator lamp comes on while driving
First check the following:
● Is the fuel tank cap loose?
If it is, tighten it securely.
The malfunction indicator lamp will go off after several driving trips.
If the malfunction indicator lamp does not go off even after several trips, con-
tact your Toyota dealer as soon as possible.
■
When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level.
Pushing the tire pressure warning reset switch will not turn off the tire
pressure warning light.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such
as natural air leaks and tire inflat ion pressure changes caused by tem-
perature. In this case, adjusting the tire inflation pressure will turn off the
warning light (after a few minutes).

542 5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
■If the tire pressure warning light frequently comes on after blinking
for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1
minute when the “POWER” switch is turned to ON mode, have it
checked by your Toyota dealer.
■ Customization
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features  P. 639) However, Toyota recommends that the
seat belt reminder buzzer be operational to alert the driver and front passen-
ger when seat belts are not fastened.
CAUTION
■ If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Toyota
dealer. The vehicle will become extremely unstable during braking, and the
ABS system may fail, which could cause an accident resulting in death or
serious injury.
■ When the electric power steerin g system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold
firmly and operate using more force than usual.

608 5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
CAUTION
■If the hybrid system has to be turned off while driving
Power assist for the brakes and steering wheel will be lost, making the brake
pedal harder to depress and the steering wheel heavier to turn. Decelerate
as much as possible before turning off the hybrid system.

631
6-1. Specifications
6
Vehicle specifications
PRIUS PHV_OM_OM47818U_(U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure 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
pressure The maximum cold inflated
pressure to which a
tire may be inflated, s hown on the sidewall of
the tire
Recommended infla-
tion pressure Cold tire inflation pressure recommended by a
manufacturer
Accessory weight The combined weight (in excess of those stan-
dard items which may be replaced) of auto-
matic transmission, power steering, power
brakes, power windows, power seats, radio
and heater, to the extent that these items are
available 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 vehi-
cle weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight

666
PRIUS PHV_OM_OM47818U_(U)
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
A/CAir Conditioning
ABSAnti-lock Brake System
ALRAutomatic Locking Retractor
APGSAdvanced Parking Guidance System
CCIDCharging Circuit Interrupting Device
CRSChild Restraint System
DISPDisplay
ECOEconomy/Ecology
ECUElectronic Control Unit
EDREvent Data Recorder
ELREmergency Locking Retractor
EPSElectric Power Steering
EVElectric Vehicle
GAWRGross Axle Weight Ratings
GFCIGround-Fault Circuit-Interrupter
GPSGlobal Positioning System
GVWRGross Vehicle Weight Rating
HVHybrid Vehicle
I/MEmission Inspection and Maintenance
LATCHLower Anchors and Tethers for Children