2014 Lexus CT200h battery

4557-3. Do-it-yourself maintenance
CT200h_OM_OM76135E_(EE)
7
Maintenance and care
Engine compartment
■12-volt battery
→ P. 4 6 3
Engine coolant reservoir ( →P. 4 6 0 )
Engine oil level dipstick ( →P. 4 5 6 )
Engine oil filler cap ( →P. 4 5 6 )
Power control unit coolant
reservoir ( →P. 4 6 0 ) Fuse box (
→P. 4 8 6 )
Radiator ( →P. 4 6 1 )
Condenser ( →P. 4 6 1 )
Electric cooling fans
Wa s h e r f l u i d t a n k ( →P. 4 6 2 )1
2
3
4
5
6
7
8
9
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4637-3. Do-it-yourself maintenance
CT200h_OM_OM76135E_(EE)
7
Maintenance and care
12-volt battery
The 12-volt battery is located in the
right-hand side of luggage compart-
ment. Open the center and right side deck boards. ( →P. 4 3 3 )
Remove the center auxiliary box. ( →P. 5 4 1 )
Remove the right side auxiliary box.
Remove the 12-volt battery mainte-
nance cover.
Location
Removing the 12-volt battery maintenance cover
1
2
3
4
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4647-3. Do-it-yourself maintenance
CT200h_OM_OM76135E_(EE)
Make sure that the 12-volt battery terminals are not corroded and that there are
no loose connections, cracks, or loose clamps.Te r m i n a l s
Hold-down clamp
The meanings of each caution symbol on the top of the 12-volt battery are as fol-
lows:
Insert the 2 tabs on the far side of the
cover into the holes.
Exterior
1
2
Caution symbols
No smoking, no naked
flames, no sparksBattery acid
Shield eyesNote operating
instructions
Keep away from childrenExplosive gas
Installing the 12-volt battery maintenance cover
1
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4657-3. Do-it-yourself maintenance
CT200h_OM_OM76135E_(EE)
7
Maintenance and care
Hook on the 2 tabs on the near side
of the cover.
Hook on the 2 tabs on the upper
side of the cover.
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flammable 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.
■After recharging/reconnecting the 12-volt battery
●Unlocking the doors using the smart entry & start system may not be possible immedi-
ately 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 sys-
tem 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 battery 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.
●Restart the hybrid system, depress the brake pedal, and confirm that it is possible to
shift into each shift position.
If the system will not start even after multiple attempts at all methods above, contact any
authorized Lexus dealer or repairer, or another duly qualified and equipped professional.
2
3
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4667-3. Do-it-yourself maintenance
CT200h_OM_OM76135E_(EE)
WA R N I N G
■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.
■How to recharge the 12-volt battery
Only perform a slow charge
*. The 12-volt battery may explode if charged at a quicker
rate.
*: 4.2 A or less on vehicles with a S46B24R battery
3.5 A or less on vehicles with a S34B20R battery
■Emergency measures regarding electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immediate 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 clothing and fol-
low the procedure above if necessary.
●If you accidentally swallow electrolyte
Drink a large quantity of water or milk . Get emergency medical attention immedi-
ately.
■When replacing the 12-volt battery
Use a 12-volt battery designed for this vehicle. Failure to do so may cause gas (hydro-
gen) to enter the passenger compartment, causing a fire or explosion.
For replacement of the 12-volt battery, contact any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.
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4677-3. Do-it-yourself maintenance
CT200h_OM_OM76135E_(EE)
7
Maintenance and care
WA R N I N G
■When disconnecting the 12-volt battery
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.
Do not disconnect the negative (-) terminal on
the body side as shown. The disconnected neg-
ative (-) terminal may touch the positive (+) ter-
minal, which may cause a short and result in
death or serious injury.
CT200h_OM_OM76135E_(EE).book Page 467 Friday, May 30, 2014 1 1:14 AM

4837-3. Do-it-yourself maintenance
CT200h_OM_OM76135E_(EE)
7
Maintenance and care
Electronic key battery
●Flathead screwdriver
●Small Phillips-head screwdriver
●Lithium battery CR1632
XTy p e A
Take out the mechanical key.
Remove the cover.
Remove the battery cover bolts and
remove the battery cover.
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
1
2
3
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4847-3. Do-it-yourself maintenance
CT200h_OM_OM76135E_(EE)
Remove the depleted battery.
Insert a new battery with the “+” termi-
nal facing up.
XTy p e B
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 “+” termi-
nal facing up.
4
1
2
3
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