check engine light TOYOTA PRIUS C 2015 NHP10 / 1.G User Guide

2394-6. Driving tips
4
Driving
PRIUS c_U (OM52E68U)
◆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 at
traffic lights, will lead to bad fuel economy. Check traffic reports
before leaving and avoid delays as much as possible. When driving
in a traffic jam, gently release the brake pedal to allow the vehicle 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 stop-
ping at a toll booth or similar, allow plenty of time to release the
accelerator and gently apply the brakes. A greater amount of elec-
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 temperature 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 gasoline engine will not automatically cut out
until it and the interior of the vehicle are warm, it will consume fuel.
Also, fuel consumption can be improved by avoiding overuse of the
heater.
◆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 appro-
priate for the season.

2414-6. Driving tips
4
Driving
PRIUS c_U (OM52E68U)
●Use fluids that are appropriate to 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 chains match
the size of the tires.
Perform the following according to the driving conditions:
●Do not try to forcibly open a window or move a wiper that is frozen.
Pour warm water over the frozen area to melt the ice. Wipe away
the water immediately to prevent 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 ice 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.
Accelerate the vehicle slowly, keep a safe distance between you and
the vehicle ahead, and drive at a reduced speed suitable to road con-
ditions.
Winter driving tips
Carry out the necessary preparations and inspections before
driving the vehicle in winter. Always drive the vehicle in a man-
ner appropriate to the prevailing weather conditions.
Pre-winter preparations
Before driving the vehicle
When driving the vehicle

365
7Maintenance and care
PRIUS c_U (OM52E68U)7-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 366
Cleaning and protecting the vehicle interior ........... 369
7-2. Maintenance Maintenance requirements ................... 372
General maintenance........ 375
Emission inspection and maintenance (I/M)
programs ......................... 378
7-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 379
Hood ................................. 382
Positioning a floor jack ...... 384
Engine compartment ......... 385
12-volt battery ................... 394
Tires .................................. 398
Tire inflation pressure ....... 406
Wheels .............................. 409
Air conditioning filter.......... 411
Wireless remote control/ electronic key battery ...... 413
Checking and replacing fuses ............................... 416
Light bulbs......................... 420

379
7
Maintenance and care
PRIUS c_U (OM52E68U)
7-3. Do-it-yourself maintenance
Do-it-yourself ser vice precautions
If you perform maintenance by yourself, be sure to follow the
correct procedure as given in these sections.
ItemsCheck points
12-volt battery condition (P. 394) • Grease
• Conventional wrench
(for terminal clamp bolts)
Brake fluid level (P. 391)
• FMVSS No.116 DOT 3 or SAE J1703 brake
fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/power control
unit coolant level (P. 389)
• “Toyota Super Long Life Coolant” or a similar
high quality ethylene glycol based non-sili-
cate, non-amine, non-nitrite and non-borate
coolant with long-life hybrid organic acid tech-
nology
For the U.S.A.:
“Toyota Super Long Life Coolant” is pre-mixed
with 50% coolant and 50% deionized water.
For Canada:
“Toyota Super Long Life Coolant” is pre-mixed
with 55% coolant and 45% deionized water.
• Funnel (used only for adding coolant)
Engine oil level (P. 386)• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( P. 416)• Fuse with same amperage rating as original
Light bulbs (P. 420)
• Bulb with same number and wattage rating as
original
• Phillips-head screwdriver
• Flathead screwdriver
• Wrench
Radiator and condenser
(P. 391)
Tire inflation pressure
( P. 406)• Tire pressure gauge
• Compressed air source

4007-3. Do-it-yourself maintenance
PRIUS c_U (OM52E68U)
Vehicles without a smart key system: Wait for a few minutes with
the engine switch in the “ON” position and then turn the engine
switch to the “ACC” or “LOCK” position.
Vehicles with a smart key system: Wait for a few minutes with the
“POWER” switch in ON mode and then turn the “POWER” switch
off.
◆Registering ID codes
The tire pressure warning valve and transmitter is equipped with a
unique ID code. When replacing a tire pressure warning valve and
transmitter, it is necessary to register the ID code. Have the ID code
registered by your Toyota dealer.
■When to replace your vehicle's tires
Tires should be replaced if:
●You have tire damage such as cuts, splits, cracks deep enough to
expose the fabric, and bulges indicating internal damage
●A tire goes flat repeatedly or cannot be properly repaired due to the size
or location of a cut or other damage
If you are not sure, consult with your Toyota dealer.
■Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not reg-
istered, the tire pressure warning system will not work properly. After driv-
ing for about 20 minutes, the tire pressure warning light blinks for 1
minute and stays on to indicate a system malfunction.
■Tire life
Any tire over 6 years old must be checked by a qualified technician even
if it has seldom or never been used or damage is not obvious.
■Routine tire inflation pressure checks
The tire pressure warning system does not replace routine tire inflation
pressure checks. Make sure to check tire inflation pressure as part of
your routine of daily vehicle checks.
■Low profile tires (vehicles with P195/50R16 tires)
Generally, low profile tires will wear more rapidly and tire grip perfor-
mance will be reduced on snowy and/or icy roads when compared to
standard tires. Be sure to use snow tires or tire chains on snowy and/or
icy roads and drive carefully at a speed appropriate for road and weather
conditions.
5

4448-2. Steps to take in an emergency
PRIUS c_U (OM52E68U)
*1: Brake system warning buzzer: When there is a possible problem that could affect braking performance,
the warning light will come on and a warning buzzer will sound.
Parking brake engaged warning buzzer:
P. 452
*2: Driver's and front passenger's seat belt buzzer: The driver's and front passenger's seat belt buzzer sounds to alert the
driver and front passenger that his or her seat belt is not fastened. Once
the engine switch is turned to the “ON” or “START” position (vehicles with-
out a smart key system) or the “POWER” switch is turned to ON mode
(vehicles with a smart key system), the buzzer sounds for 6 seconds. If the
vehicle reaches a speed of 12 mph (20 km/h), the buzzer sounds once. If
the seat belt is still unfastened after 30 seconds, the buzzer will sound
intermittently for 10 seconds. Then, if the seat belt is still unfastened, the
buzzer will sound in a different tone for 20 more seconds.
Tire pressure warning light When the light comes on:
Low tire inflation pressure such as
• Natural causes ( P. 445)
• Flat tire ( P. 462)
 Adjust the tire inflation pressure to the specified
level.
The light will turn off after a few minutes. In case
the light does not turn off even if the tire inflation
pressure is adjusted, have the system checked by
your Toyota dealer.
When the light comes on after blinking for 1 minute:
Malfunction in the tire pressure warning system
(  P. 446)
 Have the system checked by your Toyota dealer.
Warning lightWarning light/Details/Actions

4468-2. Steps to take in an emergency
PRIUS c_U (OM52E68U)■
If the tire pressure warning system is not functioning
P. 402
■
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 engine switch is turned to the “ON” position (vehicles
without a smart key system) or the “POWER” switch is turned to ON
mode (vehicles with a smart key system), have it checked by your Toyota
dealer.
■ Customization that can be configured at Toyota dealer
The vehicle speed linked seat belt reminder buzzer can be disabled. (Cus-
tomizable features P. 514) However, Toyota recommends that the seat belt
reminder buzzer be operational to aler t the driver and front passenger when
seat belts are not fastened.
■ Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.
WARNING
■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.
■
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.
●If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is probable that 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 dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,
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.

544Alphabetical index
PRIUS c_U (OM52E68U)
Eco drive mode ........................ 197
Electric power steering ........... 232
Electronic keyIf the electronic key does not operate properly ........... 476
Emergency flashers Switch ................................... 430
Emergency, in case of If a warning buzzer sounds........................ 441, 449
If a warning light
turns on .............................. 441
If a warning message is displayed ............................ 449
If the electronic key does not operate properly ........... 476
If the hybrid system will
not start .............................. 473
If the shift lever cannot be shifted from P ................ 475
If the vehicle becomes stuck ................................... 487
If the vehicle 12-volt
battery is discharged .......... 478
If you have a flat tire ............ 462
If you lose your keys ............. 120
If you think something is wrong.................................. 440
If your vehicle has to be stopped in an
emergency.......................... 431
If your vehicle needs to be towed............................. 433
If your vehicle overheats ....... 483 Engine
Compartment ........................ 385
Engine switch ............... 182, 186
Hood ..................................... 382
How to start the hybrid
system ........................ 182, 186
Identification number ............ 491
If the hybrid system will not start .............................. 473
Ignition switch ............... 182, 186
Overheating .......................... 483
“POWER” switch................... 186
Engine coolant Capacity................................ 494
Checking............................... 389
Preparing and checking
before winter ...................... 241
Engine oil Capacity................................ 493
Checking............................... 386
Preparing and checking before winter ...................... 241
Engine/power control unit coolantCapacity................................ 494
Checking............................... 389
Preparing and checking before winter ...................... 241
Engine switch .................. 182, 186
EPS ........................................... 232
EV drive mode ......................... 193
Event data recorder................... 10
Exclusive jump starting terminal .................... 478
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