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5
When trouble arises
561
5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(U)
If your vehicle overheats
Correction procedures■ If  the  high  coolant  temperatur e  warning  light  comes  on  or
flashes
Stop the vehicle in a safe place  and turn off the air condition-
ing system, and then stop the hybrid system.
If you see steam:  Carefully lift the hood after the steam subsides.
If you do not see steam: Carefully lift the hood.
After the hybrid system has
cooled down sufficiently, inspect
the hoses and radiator core
(radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The following may indicate that your vehicle is overheating.
●The high coolant temperature warning light ( P. 504) comes on
or flashes, or a loss of hybrid  system power is experienced. (For
example, the vehicle s peed does not increase.)
● “HYBRID SYSTEM OVERHEAT” ( P. 525) is shown on the
multi-informat ion display.
● Steam comes out from under the hood.
STEP 1 
STEP 2 
STEP 3  
         
        
        
     
        
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When trouble arises
563
5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(U)
■
If “HYBRID SYSTEM OVERHEAT”  is shown on the multi-infor-
mation display
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has
cooled down, inspect the hoses
and radiator core (radiator) for
any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The coolant level is satisfactory if
it is between the “F” and “L” lines
on the reservoir.Reservoir
“F”
“L”
STEP 1 
STEP 2 
STEP 3 
STEP 4  
         
        
        
     
        
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564 5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(U)
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
If water was added in an emer-
gency, have the vehicle inspected
at your Toyota dealer as soon as
possible.
After stopping the hybrid system and waiting for 5 minutes or
more, start the hybrid system again and check the multi-infor-
mation display.
If the message does not disappear:Stop the hybrid system and contact your Toyota dealer.
If the message is not displayed: The hybrid system temperature has dropped and the vehicle
may be driven normally. 
However, if the message appears again frequently, contact your
Toyota dealer.
STEP 5 
STEP 6  
         
        
        
     
        
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602
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6-2. Customization
Customizable features
Customizable featuresVehicles with a Display Audio system: Settings that can be
changed using the Display Audio system
(For further information on custom izing settings using the Display
Audio system, refer to the “D ISPLAY AUDIO SYSTEM OWNER’S
MANUAL”.)
Vehicles with a navigation syst em: Settings that can be changed
using the navi gation system 
(For further information on cust omizing settings using the naviga-
tion system, refer to the “NAVIGATION SYSTEM OWNER’S
MANUAL”.)
Settings that can be chan ged by your Toyota dealer
Definition of symbols: O = Available, — = Not available
Your vehicle includes a variety of electronic features that can be per-
sonalized  to  suit  your  prefer ences.  Programming  these  preferences
requires  specialized  equipment  and  may  be  performed  by  your
Toyota dealer.
Some function settings are changed simultaneously with other functions
being customized. Contact your Toyota dealer for further details. 
         
        
        
     
        
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608 6-2. Customization
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Multi-information display (P. 226)
ItemFunctionDefault 
settingCustom- ized
setting
Remote Air 
Condition-
ing System
( P. 348) Operation using 
the 
“A/C” button on 
the wireless 
remote control
Push and 
hold for 0.8  seconds Push once
––O
Push twice
Push and 
hold for 2.4  seconds
OFF
Stopping the 
operation using 
the “A/C” button 
on the wireless 
remote control Push twicePush once
––O
Push and 
hold for 0.8  seconds
Push and 
hold for 2.4  seconds
OFF
Reverse 
warning 
buzzer
( P. 210) Operation sig-
nals (Buzzer) 
when shifting 
into R
Beeps 
repeatedly Beeps 
once ––O
Seat belt 
reminder
( P. 513) Vehicle speed 
linked seat belt 
reminder buzzer
ON OFF – – O
Available languagesEnglish, French and Spanish 
         
        
        
     
        
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Index
627
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Abbreviation list .....................  628
Alphabetical index ..................  630
What to do if... ........................  641
Vehicles with a Display Audio system:
For details of equipment related to the Display Audio
system, such as the audio system, refer to the
“DISPLAY AUDIO SYSTEM OWNER’S MANUAL”.
Vehicles with a navigation system:
For details of equipment related to the navigation sys-
tem and touch screen, such as  the audio systems, refer
to the “NAVIGATION SYSTEM OWNER’S MANUAL”. 
         
        
        
     
        
        Page 628 of 644
628
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Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
A/CAir Conditioning
ABSAnti-lock Brake System
ALRAutomatic Locking Retractor
APGSAdvanced Parking Guidance System
CRSChild Restraint System
DISPDisplay
ECOEconomy/Ecology
ECUElectronic Control Unit
EDREvent Data Recorder
ELREmergency Locking Retractor
EPSElectric Power Steering
EVElectric Vehicle
GAWRGross Axle Weight Ratings
GPSGlobal Positioning System
GVWRGross Vehicle Weight Rating
I/MEmission Inspection and Maintenance
LATCHLower Anchors and Tethers for Children
LEDLight Emitting Diode
LKALane-Keeping Assist
MMTMethylcyclopentadienyl Manganese Tricarbonyl
M + SMud and Snow
MTBEMethyl Tertiary Butyl Ether 
         
        
        
     
        
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632 Alphabetical index
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Child safetyAirbag precautions ................150
Back door precautions ............96
Child restraint system............ 162
Child-protectors .......................89
How your child should wear the seat belt ........................ 112
Installing child restraints ........ 167
Power window lock switch..... 125
Power window precautions ... 127
Removed electronic key battery  precautions ......................... 465
Seat belt extender  precautions ......................... 117
Seat belt precautions ............ 113
Seat heater precautions ........ 376
12-volt battery precautions .... 443
Child-protectors .........................89
Cleaning
Exterior .................................. 404
Interior ................................... 407
Seat belts .............................. 408
Clock ......................................... 233
Condenser ................................ 435
Console box ............................. 365
Cooling system Engine overheating ............... 561
Hybrid system overheating.... 561
Cruise control Cruise control ........................ 269
Dynamic radar cruise control ................................. 273
Cup holders .............................. 366
Curtain shield airbags ............. 141
Customizable features............. 602 Daytime running light 
system .................................... 256
Deck board ............................... 381
Defogger
Rear window ......................... 352
Side mirrors........................... 352
Dimensions .............................. 572
Dinghy towing .......................... 329
Display Dynamic radar cruise control ................................. 273
Multi-information ................... 226
Warning messages ............... 517
Do-it-yourself maintenance .... 419
Door lock Back door ................................ 94
Side doors ............................... 88
Smart key system .. ................. 63
Wireless remote control .......... 86
Doors Back door ................................ 94
Door glasses ......................... 125
Door lock ..................... 63, 86, 88
Rear door child-protector ........ 89
Side doors ............................... 88
Driver’s seat belt reminder  light ......................................... 508
Driving
Break-in tips .......................... 183
Correct posture ..................... 139
Procedures............................ 182
Winter driving tips ................. 323D