Page 32 of 520
32
1-1. EV system
EV (Electric Vehicle) system precautions
The illustration is an example for explanation purposes only and may
vary from the actual vehicle.
Cabin coolant heater
High voltage cables (orange)
Air conditioning compressor
DC/DC converter
Service plug Charging port
Traction battery
Charger
Electric motor (traction
motor)
Please do not attempt to disassemble or service the EV system, as it
contains high voltage (nearly 400 V), as well as parts that become
extremely hot when the EV system is operating. Obey the caution
labels attached to the vehicle.
Page 51 of 520

51
1-3. Charging
1
Before driving
■
The charging environment
For safer charging, the following charging equipment and settings are rec-
ommended.
●Weatherproof electrical receptacle
When charging outside using the Toyota-provided charging cable, con-
nect to an appropriate outdoor receptacle with a “while-in-use” cover.
● Dedicated circuit
• To reduce the risk of fire, connect only to a circuit provided with 15A or
20A maximum branch circuit over-current protection in accordance
with the National Electric Code, ANSI/NFPA 70.
• To reduce the risk of electric shock when working with the plug, con- nect to an electrical receptacle with a Ground-Fault Circuit-Interrupter
(GFCI) or that has an Earth Leakage Circuit Breaker installed.
■ Using a DC charger
DC charging equipment cannot be used with this vehicle.
CAUTION
■Electrical Malfunctions
When charging the vehicle, make sure you observe the precautions included
in this manual.
Failure to do so or using a power source that does not meet the necessary
conditions can cause a fire, from electrical leakage or overheating, or elec-
tric shock that may result in death or serious injury.
Page 54 of 520

54 1-3. Charging
*: By using a smart phone, pre-climate operations and so forth can
be performed from a distant location. ( P. 58)
■ Important things to check be fore charging and pre-climate
operations (Remote Climate Control)
Before charging and pre-climate operations, always check that:
● The parking brake is securely set ( P. 216)
● The shift position is in P ( P. 206)
● All windows and doors are closed
● The motor compartment hood is securely closed
If the hood is open the electric cooling fans will not operate, raising
the temperature of the charger and traction battery. This may
increase charging time or cause charging to be aborted.
●All lights are turned off (For example, the headlights, emer-
gency flashers, interior lights, etc.)
If any lights are turned on, then these features will consume electric-
ity, and charging time will increase.
SystemDetails
Pre-climate
(Remote Climate
Control)*
The time when pre-climate operations are to be
completed by can be set for each day of the
week. Cabin temperature is adjusted before depar-
ture by performing climate control operations,
thereby reducing traction battery consumption
after departure. If these operations are per-
formed while the vehicle is plugged in, the
traction battery's power consumption is
reduced, increasing driving range. ( P. 66)
If the amount of charge remaining in the trac-
tion battery is 50% or less at the time pre-cli-
mate operations begin, pre-climate operations
will not be performed in order to preserve driv-
ing range.
Page 106 of 520

106 1-5. Opening, closing and locking the doors
■To operate the system properly
Make sure to carry the electronic key when operating the system. Do not get
the electronic key too close to the vehicle when operating the system from
the outside of the vehicle.
Depending on the position and holding condition of the electronic key, the
key may not be detected correctly and the system may not operate properly.
(The alarm may go off accidentally, or the door lock prevention may not func-
tion.)
■ If the smart key system does not operate properly
● Locking and unlocking the doors: Use the mechanical key. ( P. 468)
● Starting the EV system. ( P. 468)
■ Electronic key battery depletion
●The standard battery life is 1 to 2 years. (The battery becomes depleted
even if the electronic key is not used.) If the smart key system or the
wireless remote control function does not operate, or the detection area
becomes smaller, the battery may be depleted. Replace the battery when
necessary. ( P. 383)
● If the battery becomes low, an alarm will sound in the cabin when the EV
system stops. (P. 100)
● To avoid serious deterioration, do not leave the electronic key within 3 ft.
(1 m) of the following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
• Glass top ranges
• Table lamps
■ When the electronic key battery is fully depleted
P. 383
Page 362 of 520
362 4-3. Do-it-yourself maintenance
12-volt batteryCheck the 12-volt battery as follows:
■ 12-volt battery exterior
Make sure that the 12-volt battery terminals are not corroded and
that there are no loose connecti ons, cracks, or loose clamps.
Te r m i n a l s
Hold-down clamp
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads
wear or when the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, there may be a serious proble\
m.
■Before recharging the 12-volt battery
When recharging, the 12-volt battery produces hydrogen gas which is flam-
mable and explosive. Therefore, observe the following precautions before
recharging:
●If recharging with the 12-volt battery installed on the vehicle, be sure to
disconnect the ground cable.
● Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the 12-volt battery.
Page 392 of 520
392 4-3. Do-it-yourself maintenance
14 SMART7.5 A Smart key system
15 STRG LOCK 20 A Steering lock system
16 AM2 7.5 A Starting system
17 ABS 2 7.5 A Anti-lock brake system
18 PTC HTR 2 50 A Air conditioning system
19 PTC HTR 1 50 A Air conditioning system
20 PTC HTR 3 50 A Air conditioning system
21 CHARGER 5 A Charging system
22 IGCT 2 20 A THRML CTRL, G/W-IGCT
23 HV BATT 10 A Traction battery
24 PM-B 7.5 A Power management system
25 ODS 7.5 A Occupant classification system
26 HTR 50 A Air conditioning system
27 FAN 1 50 A Electric cooling fans
28 FAN 2 50 A Electric cooling fans
29 H-LP MAIN 40 A H-LP LH-LO, H-LP RH-LO, H-LP
LH-HI, H-LP RH-HI, manual head-
light leveling system, daytime run-
ning light system
30 ECU-B MAIN 30 A ECU-B 2, A/C-B
31 SPARE 5 A Spare fuse
32 SPARE 10 A Spare fuse
33 SPARE 20 A Spare fuse
FuseAmpereCircuit
Page 520 of 520
520
CHARGING STATION INFORMATION
Auxiliary catch leverP. 349Charging port door P. 5 9
Hood release leverP. 3 4 9Charging port door opener
P. 5 9
Tire inflation pressure
P. 488
*: Gives an estimation of the amount of time needed to charge fully from an EV driving range of 0 mile (0 km).
For the charge procedure, refer to “Charging and pre-climate
(Remote Climate Control) procedures” in section 1 ( P. 53).
Handling may differ in accordance with the type of plug provided at
the charging station. Check at each station.
Power sources AC120 V, 240 V electrical receptacles
(NEMA 5-15R or NEMA 5-20R)
Charger type
AC charger (SAE J1772 level1/level2)
Time needed for charging*P. 7 8
Traction battery type Lithium-ion battery
Cold tire inflation
pressure P. 4 8 8