5247-3. Do-it-yourself maintenance
IS300h_EE(OM53D89E)
WARNING
■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 th ere is insufficient ventilation.
■How to recharge the 12-volt battery
Only perform a slow charge (4 A — 5 A). The 12-volt battery may explode if charged at
a quicker rate.
■Emergency measures re garding 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 wa ter 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 sk in. 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 compartm ent, causing a fire or explosion.
For replacement of the 12-volt battery, contact any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
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.
6509-1. Specifications
IS300h_EE(OM53D89E)
*: The fluid capacity is a reference quantity.
If replacement is necessary, contact any authorized Lexus retailer or Lexus autho-
rized repairer, or an y reliable repairer.
Electrical system
12-volt battery
Open voltage at 20C
(68 F):
12.0 V or higher
(Check the voltage 20 minutes after the hybrid system and all lights are turned off.)
If the voltage is lower than the standard value, charge
the battery.
Charging rates4 A — 5 A
Hybrid transmission
Fluid capacity*3.8 L (4.0 qt., 3.3 Imp. qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Hybrid transmission fluid type
Using transmission fluid ot her than “Toyota Genuine ATF WS” may damage the hybrid
transmission of your vehicle.
