Page 252 of 596
2524-6. Using the driving support systems
PRIUS c_U
WARNING
■To avoid operating the cruise control by mistake
Switch the cruise control off using the “ON-OFF” button when not in use.
■ Situations unsuitable for cruise control
Do not use cruise control in any of the following situations.
Doing so may result in loss of control and could cause an accid ent resulting
in death or serious injury.
● In heavy traffic
● On roads with sharp bends
● On winding roads
● On slippery roads, such as those covered with rain, ice or snow
● On steep hills
Vehicle speed may exceed the set speed when driving down a stee p hill.
● During emergency towing
Page 487 of 596
4878-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U
Indicates a malfunction in:
• The Automatic High Beam system
• The LED headlight systemA buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
Indicates that:
• There is a high possibility of a frontal collision;
or
• The pre-collision braking function is operating A buzzer also sounds.
Check the vehicle's surroundings and take
evasive action if necessary.
(If equipped)
• Indicates a malfunction in the smart key system
• Indicates a malfunction in the steering lock sys-
tem
A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
(If equipped)
Indicates a malfunction in the cruise control sys-
tem
A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
Indicates a malfunction in the Brake Override
System
A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer immediately.
Warning messageDetails/Actions
(Flashes)
Page 513 of 596

5138-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U
WARNING
■When using the compact spare tire
●Remember that the compact spare tire provided is specifically
designed for use with your vehicle. Do not use your compact spare tire
on another vehicle.
●Do not use more than one compact spare tire simultaneously.
●Replace the compact spare tire with a standard tire as soon as possi-
ble.
●Avoid sudden acceleration, abrupt steering, sudden braking and shift-
ing operations that cause sudden engine braking.
■When the compact spa re tire is attached
The vehicle speed may not be co rrectly detected, and the following sys-
tems may not operate correctly:
■Speed limit when using the compact spare tire
Do not drive at speeds in excess of 50 mph (80 km/h) when a com pact
spare tire is installed on the vehicle.
The compact spare tire is not designed for driving at high spee ds. Fail-
ure to observe this precaution ma y lead to an accident causing death or
serious injury.
■After using the tools and jack
Before driving, make sure all t he tools and jack are securely i n place in
their storage locatio n to reduce the possibility of personal in jury during a
collision or su dden braking.
• ABS & Brake assist
• VSC
•TRAC
• Cruise control (if equipped)
• PCS (Pre-collision system) • LDA (Lane Departure Alert)
• Automatic High Beam
• EPS
• Rear view monitor system
• Navigation system (if equipped)
Page 587 of 596

587Alphabetical index
PRIUS c_U
Child safetyAirbag precautions .................. 42
Child-protectors .................... 129
Child restraint system ............. 58
How your child should
wear the seat belt ................. 34
Installing child restraints ......... 62
Moon roof precautions .......... 167
Power window lock switch .... 161
Power window precautions ... 164
Removed key battery precautions ......................... 451
Seat belt extender precautions ........................... 38
Seat belt precautions .............. 36
Seat heater precautions........ 382
12-volt battery precautions ................. 431, 525
Cleaning Exterior ................................. 398
Interior................................... 401
Seat belts .............................. 404
Clock ......................................... 106
Coat hooks ............................... 393
Condenser ................................ 426
Console box ............................. 387
Cooling system
Hybrid system overheating ... 526
Cord hook................................. 282
Cruise control .......................... 249
Cup holders.............................. 389
Curtain shield airbags ............... 40
Customizable features ............ 558 Daytime running light
system.................................... 208
Defogger Rear window ......................... 376
Side mirrors .......................... 376
Dimension ................................ 534
Dinghy towing.......................... 185
Display Energy flow ........................... 110
Multi-information display ....... 101
Trip information..................... 101
Warning message................. 485
Do-it-yourself maintenance .... 414
Doors Back door ............................. 134
Door lock .............................. 128
Door windows ....................... 161
Rear door child protector ...... 129
Side doors ............................ 125
Side mirrors .......................... 159
Driver’s seat belt reminder light ........................................ 479
Driving
Break-in tips.......................... 172
Correct posture ....................... 28
Procedures ........................... 170
Winter driving tips ................. 272D
Page 593 of 596

593Alphabetical index
PRIUS c_U
SensorAutomatic High Beam
system ......... ....................... 224
Front sensor.......................... 224
Laser sensor ......................... 224
LDA (Lane Departure Alert)........ 224
Monocular camera sensor .... 224
PCS
(Pre-Collision system) ........ 224
Shift lever
If the shift lever cannot be shifted from P ................ 202
Transmission ........................ 200
Shift lock system ..................... 202
Side airbags ............................... 40
Side marker lights Replacing light bulbs............. 463
Wattage ................................ 542
Side mirror
Adjusting and folding ............ 159
Defogger ............................... 376
Smart key system
Entry function ........................ 139
Starting the hybrid system ....... ................. 186, 190
Spare tire
Inflation pressure .................. 541
Storage location .................... 503
Spark plug ................................ 539
Specifications .......................... 534
Speedometer .............................. 97
Steering
Column lock release ..... 188, 193
Steering wheel Adjustment ............................ 156
Audio switches ...................... 281 Stop lights
Replacing light bulbs ............ 462
Storage feature ........................ 386
Storage precautions................ 181
Stuck If the vehicle becomes stuck ................................... 530
Sun visors ................................ 391
Switch
Automatic High Beam switch ................................. 244
Cruise control ....................... 249
Eco drive mode switch.......... 201
Emergency flasher switch..... 466
EV drive mode switch ........... 197
Fog light switch ..................... 210
Hazard light switch ............... 466
Headlight switch ................... 206
Ignition switch ............... 186, 190
LDA (Lane Departure Alert) switch ................................. 241
Light switches ....................... 206
PCS (Pre-Collision system) switch...... .............. 232
Power door lock switch ......... 128
Power switch ................ 186, 190
Power window switch ........... 161
Rear window wiper and washer switch..................... 216
Steering wheel audio
switches ............................. 281
VSC OFF switch ................... 264
Window lock switch .............. 161
Wiper and washer......... 212, 216
*: For vehicles with a navigation system, refer to the “NAVIGATION SYSTEM OWNER'S MANUAL”.