Page 393 of 509

3937-2. Steps to take in an emergency
PRIUS +_OM_OM47B24E_(EE)
7
When trouble arises
*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:
A buzzer will sound if the vehicle is driven at a speed of approximately
5 km/h (3 mph) or more.
*2: If you continue to use the vehicle in this state, the light starts blinking withbuzzer sounds, and you will soon become unable to start the hybrid sys-
tem.
*3: Open door warning buzzer:
The open door warning buzzer sounds to alert one or more of the doors is
not fully closed (with the vehicle having reached a speed of 5 km/h
[3 mph]).
*4: Seat belt buzzer:The seat belt buzzer sounds to alert the driver, front passenger and rear
passengers that his or her seat belt is not fastened. The buzzer sounds for
30 seconds after the vehicle reaches a speed of 20 km/h (12 mph). Then, if
the seat belt is still unfastened, the buzzer will sound in a different tone for
90 more seconds.
Carrying out the corresponding action turns the warning light off.
Other warning light
Warning lightWarning light/Details/Actions
(If equipped)
Go to service warning light Indicates that maintenance of the hybrid battery (traction
battery) cooling component is required
The filter may be clogged, the air intake vent may be
blocked or there may be a gap in the duct.
→ Have maintenance performed on the hybrid battery
(traction battery) cooling component at any autho-
rized Toyota dealer or repairer, or another duly quali-
fied and equipped professional.
Page 409 of 509
4097-2. Steps to take in an emergency
PRIUS +_OM_OM47B24E_(EE)
7
When trouble arises
Carrying out the corresponding action turns the messages off.
Other displayed messages
Displayed messageDetails/Actions
Maintenance of the hybrid battery (traction bat-
tery) cooling component is requiredThe filter may be clogged, the air intake vent
may be blocked or there may be a gap in the
duct.
→ Have maintenance performed on the hybrid
battery (traction battery) cooling compo-
nent at any authorized Toyota dealer or
repairer, or another duly qualified and
equipped professional.
Indicates that the EV drive mode is not available*
The reason the EV drive mode is not available
(the vehicle is idling, battery charge is low,
speed is higher than the EV drive mode operat-
ing speed range, accelerator pedal is
depressed too much) may be displayed.
A buzzer also sounds.
→ Use the EV drive mode when it becomes
available.
Page 490 of 509

490Alphabetical index
PRIUS +_OM_OM47B24E_(EE)
Alphabetical index
A/C............................................. 280Air conditioning filter.............. 357
Automatic air conditioning
system ................................ 280
Climate remote control switches.............................. 288
Pollen removal mode ............ 283
ABS
(Anti-lock Brake System) ...... 256Function ................................ 256
Warning light ......................... 388
Air conditioning filter .............. 357
Air conditioning system .......... 280 Air conditioning filter.............. 357
Automatic air conditioning system ................................ 280
Climate remote control switches.............................. 288
Pollen removal mode ............ 283
Air intake vent ............................ 86
Airbag manual on-off system ...................................... 56 Airbags ....................................... 46
Airbag manual on-off system .................................. 56
Airbag operating conditions .... 52
Airbag precautions for your child ...................................... 48
Airbag warning light .............. 388
Correct driving posture ........... 36
Curtain shield airbag operating conditions ............. 52
Curtain shield airbag precautions........................... 50
General airbag precautions .... 48
Locations of airbags................ 46
Modification and disposal of airbags.................................. 51
Side airbag operating conditions ............................. 52
Side airbag precautions .......... 49
Side and curtain shield airbags operating
conditions ............................. 52
Side and curtain shield airbags precautions .............. 50
SRS airbags............................ 46
A
Page 491 of 509

491Alphabetical index
PRIUS +_OM_OM47B24E_(EE)
Alarm........................................... 98Alarm....................................... 98
Warning buzzer ..................... 387
Anchor brackets ........................ 67
Antenna Smart entry & start system.... 153
Anti-lock brake system (ABS) ...................................... 256Function ................................ 256
Warning light ......................... 388
Approach warning ................... 246
Assist grips .............................. 305
Audio input
*
Audio system*
Automatic air conditioning systemAir conditioning filter.............. 357
Automatic air conditioning system ................................ 280
Automatic headlight leveling system .................................... 225Function ................................ 225
Warning light ......................... 391
Automatic light control
system .................................... 224
AUX port
*
Auxiliary boxes ................ 297, 299 Back door ................................. 148
Back-up lights
Replacing light bulbs............. 372
Wattage ................................ 474
Battery (12-volt battery) Battery checking ................... 337
If the 12-volt battery is discharged .......................... 452
Preparing and checking before winter....................... 274
Warning light ......................... 387
Battery (traction battery)........... 85
Bluetooth
®*
Bottle holders .......................... 295
Brake Fluid ...................................... 472
Parking brake........................ 222
Regenerative braking.............. 82
Warning light ......................... 387
Brake assist ............................. 256
Break-in tips ............................. 197
Brightness control Instrument cluster light control................................. 114
B
*: Refer to the “Navigation and multimedia system Owner’s Manual”.