Page 300 of 444
300
4-3. Do-it-yourself maintenance
12-volt battery
■Location
The 12-volt battery is located
in the right-hand side of the
luggage compartment.
■ Removing the 12-volt battery cover
Remove the 12-volt battery
cover.
■ Exterior
Make sure that the 12-volt battery terminals are not corroded
and that there are no loose c onnections, cracks, or loose
clamps.
Terminals
Hold-down clamp
Page 301 of 444

301
4-3. Do-it-yourself maintenance
4
Maintenance and care
■
Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flam-
mable and explosive. Therefore, observe the following 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.
■ After recharging/reconnect ing the 12-volt battery
In some cases, the hybrid system may not start. Follow one or both of the
following procedures:
● After opening and closing the driver’s door, wait 10 seconds then attempt
to start the hybrid system. (If the system does not start first time, repeat
the procedure.)
● With the shift lever in P and the “POWER” switch OFF, open and close
the driver’s door, then attempt to start the hybrid system.
If the system will not start even after multiple attempts at both methods, con-
tact your Toyota dealer.
Page 302 of 444

302 4-3. Do-it-yourself maintenance
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 not sufficient 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. Follow with milk of magnesia,
beaten raw egg or vegetable oil. Get emergency medical attention immedi-
ately.
Page 303 of 444
303
4-3. Do-it-yourself maintenance
4
Maintenance and care
CAUTION
■
When replacing the 12-volt battery
Use a 12-volt battery designed for the CAMRY HYBRID. Failure to do so
may cause gas (hydrogen) to enter the passenger compartment, causing a
fire or explosion.
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.
Page 322 of 444
322
4-3. Do-it-yourself maintenance
Key battery
Replace the battery with a new one if it is discharged.
■You will need the following items:
●Flathead screwdriver (To prevent damage to the key, cover
the tip of the screwdriver with rag.)
● Small Phillips-head screwdriver
● Lithium battery CR1632
■ Replacing the battery
Take out the mechanical key.
Remove the cover.
STEP1
STEP2
Page 323 of 444
323
4-3. Do-it-yourself maintenance
4
Maintenance and care
■
If the key battery is discharged
The following symptoms may occur.
●The smart key system and wireless remote control will not function prop-
erly.
● The operational range is reduced.
■ Use a CR1632 lithium battery
●Batteries can be purchased at your Toyota dealer, jewelers, or camera
stores.
● Replace only with the same or equivalent type recommended by your
Toyota dealer.
● Dispose of used batteries according to the local laws.
CAUTION
■Removed battery and other parts
Keep away from children.
These parts are small and if swallowed by a child they can cause choking.
Remove the depleted battery.
Insert a new battery with the
“+” terminal facing up.
STEP3
Page 324 of 444
324 4-3. Do-it-yourself maintenance
NOTICE
■For normal operation after replacing the 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 components inside the remote control.
● Do not bend either of the battery terminals.
Page 329 of 444

329
4-3. Do-it-yourself maintenance
4
Maintenance and care
4 AM2
7.5 A “POWER” switch
5 ABS MAIN
NO.2 10 AElectronically controlled brake sys-
tem
6 ABS MAIN
NO.1 10 AElectronically controlled brake sys-
tem
7 ABS MAIN
NO.3 10 AElectronically controlled brake sys-
tem
8 BATT FAN 10 A Hybrid battery fan
9 ETCS 10 A Electronic throttle control system
10 HAZ 15 A Turn signal lights
11 IG2 20 AMultiport fuel injection system/
sequential multiport fuel injection
system, starting system, “GAUGE
NO.2”, “INJ” and “IGN” fuses
12 STR LOCK 20 A Steering lock system
13 DOME 10 AGauges and meters, vanity lights,
trunk light, “POWER” switch light,
door courtesy lights, interior light,
personal lights, clock, smart key
system
14 ECU-B NO.1 10 A Front passenger occupant classifi-
cation system, main body ECU
15 RADIO NO.1 15 A Audio system, navigation system
16 DOOR NO.1 25 A Main body ECU, power door lock
17 IGCT 30 AHybrid system ECU, “PWR”, “IGCT
No.2” and “INV W/P” fuses
18 AMP 25 A Audio system
19 EFI MAIN 30 AMultiport fuel injection system/
sequential multiport fuel injection
system, electronic throttle control
system and “EFI NO.3” fuses
FuseAmpereCircuit