Page 451 of 568

4517-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(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 with
buzzer 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 retailer or Toyota authorized repairer, or
any reliable repairer.
Page 470 of 568
4707-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
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 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 compo-
nent at any authorized Toyota retailer or
Toyota authorized repairer, or any reliable
repairer.
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 552 of 568

552Alphabetical index
PRIUS +_OM_OM47D30E_(EE)
Alphabetical index
A/C............................................. 332
Air conditioning filter.............. 413
Automatic air conditioning
system ................................ 332
Climate remote control
switches.............................. 340
Pollen removal mode ............ 335
ABS
(Anti-lock Brake System) ...... 318
Function ................................ 318
Warning light ......................... 445
Air conditioning filter .............. 413
Air conditioning system .......... 332
Air conditioning filter.............. 413
Automatic air conditioning
system ................................ 332
Climate remote control
switches.............................. 340
Pollen removal mode ............ 335
Air intake vent ............................ 86
Airbag manual on-off
system ...................................... 56Airbags ....................................... 46
Airbag manual on-off
system .................................. 56
Airbag operating conditions .... 52
Airbag precautions for your
child ...................................... 48
Airbag warning light .............. 445
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 553 of 568

553Alphabetical index
PRIUS +_OM_OM47D30E_(EE)
Alarm......................................... 104
Alarm..................................... 104
Warning buzzer ..................... 444
Anchor brackets ........................ 67
Antenna
Smart entry & start system.... 153
Anti-lock brake system
(ABS) ...................................... 318
Function ................................ 318
Warning light ......................... 445
Approach warning ................... 307
Assist grips .............................. 357
Audio input
*
Audio system*
Automatic air conditioning
system
Air conditioning filter.............. 413
Automatic air conditioning
system ................................ 332
Automatic headlight leveling
system .................................... 243
Function ................................ 243
Warning light ......................... 449
Automatic High Beam ............. 244
Automatic light control
system .................................... 242
AUX port
*
Auxiliary boxes ................ 349, 351Back door ................................. 148
Back-up lights
Replacing light bulbs............. 428
Wattage ................................ 536
Battery (12-volt battery)
Battery checking ................... 389
If the 12-volt battery is
discharged .......................... 513
Preparing and checking
before winter....................... 327
Warning light ......................... 444
Battery (traction battery)........... 85
Bluetooth
®*
Bottle holders .......................... 347
Brake
Fluid ...................................... 534
Parking brake........................ 240
Regenerative braking.............. 82
Warning light ......................... 444
Brake assist ............................. 318
Brake Override System ........... 213
Break-in tips ............................. 214
Brightness control
Instrument cluster light
control................................. 120
B
*: Refer to the “Navigation and multimedia system Owner’s Manual”.