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364 4-3. Do-it-yourself maintenance
CAUTION
■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.
■ 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.
NOTICE
■When recharging the 12-volt battery
Never recharge the 12-volt battery while the EV system is operating. Also,
be sure all accessories are turned off.
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4-3. Do-it-yourself maintenance
4
Maintenance and care
CAUTION
■To prevent damage to the vehicle
■Replacing a tire
●Do not try to remove the ornament by hand. Take due care in handling
the ornament to avoid unexpected personal injury.
●Failure to follow these precautions could cause the wheel nuts to
loosen and the tire to fall off, resulting in death or serious injury.
• Have the wheel nuts tightened with a torque wrench to 76 ft
•lbf (103
N
•m, 10.5 kgf•m) as soon as possible after changing wheels.
• Do not attach a heavily damaged wh eel ornament, as it may fly off
the wheel while the vehicle is moving.
●Do not use a tire jack because its
arms may interfere with the traction
battery in the vehicle underbody.
●Forcibly using a tire jack may damage
the traction battery or cause the vehi-
cle to fall off the jack, resulting in
death or serious injury.
Inside
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376 4-3. Do-it-yourself maintenance
■Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure ma y result in the following:
●Reduced traction battery efficiency
●Reduced driving comfort and tire life
●Reduced safety
●Damage to the drive train
If a tire needs frequent inflating, have it checked by your Toyota dealer.
■Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:
●Check only when the tires are cold.
If your vehicle has been parked for at least 3 hours or has not been
driven for more than 1 mile or 1.5 km, you will get an accurate cold
tire inflation pressure reading.
●Always use a tire pressure gauge.
The appearance of the tire can be mi sleading. In addition, tire infla-
tion pressure that is even just a few pounds off can affect ride quality
and handling.
●Do not reduce tire inflation pressure after driving. It is normal for tire
inflation pressure to be higher after driving.
●Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle
is balanced.
Page 383 of 520
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4-3. Do-it-yourself maintenance
4
Maintenance and care
Electronic key batter y
Replace the battery with a new one if it is depleted.
■You will need the following items:
●Flathead screwdriver
● Small flathead screwdriver
● Lithium battery CR1632
■ Replacing the battery
Take out the mechanical key.
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver
with a rag.
Remove the depleted battery.
Insert a new battery with the
“+” terminal facing up.
STEP 1
STEP 2
STEP 3
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384 4-3. Do-it-yourself maintenance
■Use a CR1632 lithium battery
●Batteries can be purchased at your Toyota dealer, local electrical appli-
ance shops or camera stores.
● Replace only with the same or equivalent type recommended by the
manufacturer.
● Dispose of used batteries according to local laws.
■ If the electronic key battery is depleted
The following symptoms may occur.
●The smart key system and wireless remote control will not function prop-
erly.
● The operational range will be reduced.
CAUTION
■Removed electronic key battery and other parts
Keep away from children. These parts are small and if swallowed by a child,
they can cause choking. Failure to do so could result in death or serious
injury.
NOTICE
■For normal operation after re placing the electronic key battery
Observe the following precautions to prevent accidents.
● Always work with dry hands.
Moisture may cause the battery to rust.
● Do not touch or move any other component inside the remote control.
● Do not bend either of the battery terminals.
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4-3. Do-it-yourself maintenance
4
Maintenance and care
Fuse layout and amperage ratings
■ Motor compartment
Type A (driver’s side)
FuseAmpereCircuit
1 INV MTR 10 A Inverter motor
2 IGDI 1 10 ATraction battery, multiplex commu-
nication system, thermal control
system
3 BATT W/P 1 15 A Traction battery
4 BATT W/P 2 15 A Traction battery
5 P/T W/P 15 A Cooling system
6 IGDI MAIN 20 A INV MTR, IGDI 1
7 HAZ 15 A Emergency flashers
8 IGCT 3 20 APM-IGCT, P CNT-IGCT, A/C-IGCT,
FA N -I G C T
9 G/W-B 10 A Multiplex communication system
10 RADIO 30 A Audio system
11 P CNT-B 7.5 A Parking control system
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390 4-3. Do-it-yourself maintenance
12 ABS 130 A Anti-lock brake system
13 ECB 1 50 AElectronically controlled brake sys-
tem
14 ECB 2 50 AElectronically controlled brake sys-
tem
15 W/P-IGCT 50 A P/T W/P, BATT W/P 1, BATT W/P 2
16 EPS 60 A Electric power steering
17 P/I 60 AIGCT-D, HORN, parking control
system, IG2
18 MAIN 60 AH-LP MAIN, DRL, ODS, smart key
system, ABS 2, steering lock sys-
tem, PM-B, ECU-B MAIN
19 CONTACTOR 15 A Traction battery, charging system
20 IG2 15 A Starting system
21
HORN 10 A Horn
22 IGCT-D 7.5 A Thermal control system, power
management ECU, parking control
system, multiplex communication
system
23 PM-IGCT 7.5 A Power management system
24 P CNT-IGCT 7.5 A Parking control system
25 A/C-IGCT 10 A Air conditioning system
26 FAN-IGCT 7.5 A Electric cooling fans
FuseAmpereCircuit
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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