363
4-3. Do-it-yourself maintenance
4
Maintenance and care
■
After recharging/reconnecting the 12-volt battery
●Unlocking the doors using the smart key system may not be possible
immediately after reconnecting the 12-volt battery. If this happens, use
the wireless remote control or the mechanical key to lock/unlock the
doors.
● Start the hybrid system with the “POWER” switch in ACCESSORY mode.
The hybrid system may not start with the “POWER” switch turned off.
However, the hybrid system will operate normally from the second
attempt.
● The “POWER” switch mode is recorded by the vehicle. If the 12-volt bat-
tery is reconnected, the vehicle will return the “POWER” switch mode to
the status it was in before the 12-volt battery was disconnected. Make
sure to turn off the power before disconnect the 12-volt battery. Take
extra care when connecting the 12-volt battery if the “POWER” switch
mode prior to discharge is unknown.
If the system will not start even after multiple attempts, contact your Toyota
dealer.
CAUTION
■ Chemicals in the 12-volt battery
The 12-volt battery contains poisonous and corrosive sulfuric acid and may
produce hydrogen gas which is flammable and explosive. To reduce the risk
of death or serious injury, take the following precautions while working on or
near the 12-volt battery:
●Do not cause sparks by touching the 12-volt battery terminals with tools.
● Do not smoke or light a match near the 12-volt battery.
● Avoid contact with eyes, skin and clothes.
● Never inhale or swallow electrolyte.
● Wear protective safety glasses when working near the 12-volt battery.
● Keep children away from the 12-volt battery.
■ Where to safely charge the 12-volt battery
Always charge the 12-volt battery in an open area. Do not charge the 12-volt
battery in a garage or closed room where there is insufficient ventilation.
364 4-3. Do-it-yourself maintenance
CAUTION
■How to recharge the 12-volt battery
Only perform a slow charge (5 A or less). The 12-volt battery may explode if
charged at a quicker rate.
■ Emergency measures regarding electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immedi-
ate medical attention. If possible, continue to apply water with a sponge or
cloth while traveling to the nearest medical facility.
● If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical
attention immediately.
● If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the cloth-
ing and follow the procedure above if necessary.
● If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Get emergency medical attention
immediately.
■ When replacing the 12-volt battery
Use a 12-volt battery designed for this vehicle. Failure to do so may ca\
use
gas (hydrogen) to enter the passenger co mpartment, causing a fire or explo-
sion.
For replacement of the 12-volt battery, contact your Toyota dealer.
NOTICE
■ When recharging the 12-volt battery
Never recharge the 12-volt battery while the hybrid system is operating.
Also, be sure all accessories are turned off.
414 5-2. Steps to take in an emergency
Stop the vehicle immediately.The following warning indicates the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Toyota dealer.
Have the vehicle inspected by your Toyota dealer immediately.Failing to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.
Warning lightWarning light/Details
Charging system warning light Indicates a malfunction in the vehicle’s charging system.
Low engine oil pressure warning light Indicates that the engine oil pressure is too low.
High engine coolant temper ature warning light (the
rightmost segment of the engine coolant temperature
display flashes) Indicates that the engine is almost overheating. ( P. 465)
Warning lightWarning light/Details
(U.S.A.)
(Canada) Malfunction indicator lamp
Indicates a malfunction in:
• The hybrid system;
• The electronic engine control system; or
• The electronic throttle control system; or
• The hybrid transmission control system.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The front passenger occupant classification system; or
• The seat belt pretensioner system.
5
When trouble arises
463
5-2. Steps to take in an emergency
■
Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even
when the vehicle is not in use, due to natural discharge and the draining
effects of certain electrical appliances. If the vehicle is left for a long time, the
12-volt battery may discharge, and the hybrid system may be unable to start.
(The 12-volt battery recharges automatically while the hybrid system is oper-
ating.)
■ Precautions when the 12-volt battery is discharged
●In some cases, it may not be possible to unlock the doors using the smart
key system when the battery is discharged. Use the wireless remote con-
trol or the mechanical key to lock or unlock the doors.
● The hybrid system may not start on the first attempt after the 12-volt bat-
tery has recharged but will start normally after the second attempt. This is
not a malfunction.
● The “POWER” switch mode is memorized by the vehicle. When the 12-
volt battery is reconnected, the system will return to the mode it was in
before the 12-volt battery was discharged. Before disconnecting the 12-
volt battery, turn the “POWER” switch off.
If you are unsure what mode the “POWER” switch was in before the 12-
volt battery discharged, be especially careful when reconnecting the 12-
volt battery.
CAUTION
■Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the 12-volt battery:
●Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended terminal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open flame near
the 12-volt battery.
464 5-2. Steps to take in an emergency
CAUTION
■12-volt battery precautions
The 12-volt battery contains poisonous and corrosive acidic electrolyte,
while related parts contain lead and lead compounds. Observe the following
precautions when handling the 12-volt battery:
●When working with the 12-volt battery, always wear safety glasses and
take care not to allow any battery fluids (acid) to come into contact with
skin, clothing or the vehicle body.
● Do not lean over the 12-volt battery.
● In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
● Always wash your hands after handling the battery support, terminals, and
other battery-related parts.
● Do not allow children near the 12-volt battery.
■ After recharging the 12-volt battery
Have the 12-volt battery inspected at your Toyota dealer as soon as possi-
ble.
If the 12-volt battery is deteriorating, continued use may cause the 12-volt
battery to emit a malodorous gas, which may be detrimental to the health of
passengers.
■ When replacing the 12-volt battery
P. 364
478 6-1. Specifications
Electrical system
Transmission
*: The fluid capacity is a reference quantity. If replacement is necessary, con-tact your Toyota dealer.
Battery
Open voltage* at
68 F (20 C): 12.6 12.8 V Fully charged
12.2 12.4 V Half charged
11 . 8
12.0 V Discharged
(*: Voltage checked 20 minutes after the
engine and all the lights are turned off)
Charging rates 5 A max.
Fluid capacity* 3.9 qt. (3.7 L, 3.3 Imp. qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may ulti-
mately damage the transmission of your vehicle.
532 Alphabetical index
Warning buzzersBrake system ........................ 413
Electric power steering
system ................................ 414
Open door ............................. 416
Seat belt reminder ................. 416
Warning lights Anti-lock brake system .......... 414
Brake assist system .............. 414
Brake system ........................ 413
Charging system .... ............... 414
Electric power steering system ................................ 414
Engine coolant
temperature ........................ 414
Engine oil pressure ............... 414
Low fuel level ........................ 416
Low tire pressure warning light ..................................... 416
Malfunction indicator lamp .... 414
Master warning light .............. 416
Open door ............................. 416
Pretensioners ........................ 414
Seat belt reminder light ......... 416
Slip indicator.......................... 414
SRS airbags .......................... 414
Warning messages Blind Spot monitor ......... 425, 426
Cruise control ........................ 425
EV drive mode....................... 426
Headlight ............................... 426
Hood...................................... 426
Hybrid system ....................... 424
Hybrid system overheat ........ 426
Maintenance.......................... 426
Moon roof .............................. 426
N position .............................. 426
Open door ............................. 426
Parking brake ........................ 426
P position .............................. 426
Smart key system.......... 425, 433
Steering lock ......................... 425
Traction battery ..................... 426 Trunk ..................................... 426
Washer fluid .......................... 426
Washer Checking ............................... 359
Preparing and checking before winter ....................... 225
Switch ................................... 200
Washing and waxing ............... 332
Weight
Cargo capacity ...................... 220
Load limits ............................. 224
Weight ................................... 472
Wheels ...................................... 377
Window glasses ........................ 97
Window lock switch................... 97
Windows Power windows ....................... 97
Rear window defogger .......... 239
Washer.................................. 200
Windshield wipers ................... 200
Wireless remote control key
Replacing the battery ............ 382
Wireless remote control .......... 66
WMA disc.................................. 255W
535
What to do if...
■
Warning lights
P. 414
or
P. 4 1 3P. 416
P. 4 1 4P. 414
P. 4 1 4P. 416
P. 4 1 4P. 416
P. 416
or
P. 4 1 4P. 416
P. 4 1 4
or
P. 4 1 4P. 414
Brake system warning
light (red indicator)Slip indicator light
Tire pressure warning
system light
Brake system warning light
(yellow indicator)Electric power steering sys-
tem warning light
Charging system warn-
ing lightOpen door warning light
Low engine oil pressure
warning lightLow fuel level warning
light
Malfunction indicator
lampDriver’s/front passenger’s seat
belt reminder light
Master warning light
SRS warning lightHigh engine cool-
ant temperature
warning light (the
rightmost seg-
ment of the engine
coolant tempera-
ture display
flashes)
ABS warning light
The warning message is
displayedP. 423If a warning message is displayed