6694-3. Do-it-yourself maintenance
4
Maintenance and care 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 bat-
tery 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 le ss). 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 immediate medi-
cal 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 atten-
tion immediately.●
If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the clothing and
follow the procedure above if necessary.●
If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Get emergency medical attention imme-
diately.■
When replacing the 12-volt battery
Use a 12-volt battery designed for the RX 450h. 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 Lexus 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.
8056-1. Specifications
6
Vehicle specifications Electrical system
Hybrid Transaxle
* : The fluid capacity is a reference quantity. If replacement is necessary, contact
your Lexus dealer.12-volt battery
Open voltage* at
68 F (20 C): 12.6
12.8 V Fully charged
12.2
12.4 V Half charged
11.8
12.0 V Discharged
(*: Voltage checked 20 minutes after the hybrid sys-
tem and all the lights are turned off)
Charging rates 5 A max.
Fluid capacity*
Front 4.9 qt. (4.6 L, 4.0 Imp. qt.)
Rear (AWD models) 1.9 qt. (1.8 L, 1.6 Imp. qt.)
Fluid type Toyota Genuine ATF WS
NOTICE■
Hybrid transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may ultimately dam-
age the hybrid transmission of your vehicle.
