charging Lexus GS300h 2013 User Guide

7526-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30D53E_(EE)
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 work-
ing 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 ventila-
tion.
How to recharge the 12-volt battery
Recharge at a current of 5 A or less and make sure that the recharging
period does not exceed a total of 12 hours.

753
6 6-3. Do-it-yourself maintenance
Maintenance and care
GS450h_300h_OM_OM30D53E_(EE)
CAUTION
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
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
immediately.
When replacing the 12-volt battery
Use a 12-volt battery designed for this vehicle. Failure to do so may cause
gas (hydrogen) to enter the passenger compartment, causing a fire or explo-
sion.
For replacement of the 12-volt battery, contact any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional.
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.

8317-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
The following warning indicates the possibility of damage to the
vehicle that may lead to an accident. Immediately stop the vehicle
in a safe place and contact any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.
Failure to investigate the cause of the following warnings may lead
to the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional imme-
diately.
Stop the vehicle immediately.
Wa r n i n g
lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.
Wa r n i n g
lightWarning light/Details
Malfunction indicator lamp
Indicates a malfunction in:
• The hybrid system;
• The emission control system (if equipped);
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic hybrid transmission control system (if
equipped)
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system

9147-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
Open and close any of the doors of your vehicle with the power
switch off.
Maintain the engine speed of the second vehicle and start the
hybrid system of your vehicle by turning the power switch to ON
mode.
Make sure the “READY” indicator comes on. If the indicator
does not come on, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
Once the hybrid system has started, remove the jumper cables in
the exact reverse order from which they were connected.
Once the hybrid system starts, have the vehicle inspected at any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional as soon as possible.
Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
To prevent 12-volt battery discharge
Turn off the headlights and the audio system while the hybrid system is off.
Turn off any unnecessary electrical components when the vehicle is running
at a low speed for an extended period, such as in heavy traffic.
Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even
when the vehicle is not in use, due to natural discharge and the draining
effects of certain electrical appliances. If the vehicle is left for a long time,
the 12-volt battery may discharge, and the hybrid system may be unable to
start. (The 12-volt battery recharges automatically while the hybrid system is
operating.)
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5
6
7

915
7 7-2. Steps to take in an emergency
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
When recharging or replacing the 12-volt battery
For vehicles with an alarm: make sure that the key is not inside the vehicle
when recharging or replacing the 12-volt battery. The key may be locked in
the vehicle if the alarm is activated. (P. 99)
In some cases, it may not be possible to unlock the doors using the smart
entry & start system when the 12-volt battery is discharged. Use the wire-
less remote control or the mechanical key to lock or unlock the doors.
The hybrid system may not start on the first attempt after the 12-volt battery
has recharged but will start normally after the second attempt. This is not a
malfunction.
The power switch mode is memorized by the vehicle. When the 12-volt bat-
tery is reconnected, the system will return to the mode it was in before the
12-volt battery was discharged. Before disconnecting the 12-volt battery,
turn the power switch off.
If you are unsure what mode the power switch was in before the 12-volt
battery discharged, be especially careful when reconnecting the 12-volt bat-
tery.
CAUTION
Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the
flammable gas that may be emitted from the 12-volt battery:
Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended termi-
nal.
Do not allow the other end of the jumper cable connected to the “+” termi-
nal to come into contact with any other parts or metal surfaces in the area,
such as brackets or unpainted metal.
Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
Do not smoke, use matches, cigarette lighters or allow open flame near the
12-volt battery.

9167-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
CAUTION
12-volt battery precautions
The 12-volt battery contains poisonous and corrosive acidic electrolyte,
while related parts contain lead and lead compounds. Observe the follow-
ing precautions when handling the 12-volt battery:
When working with the 12-volt battery, always wear safety glasses and
take care not to allow any 12-volt battery fluids (acid) to come into con-
tact with skin, clothing or the vehicle body.
Do not lean over the 12-volt battery.
In the event that 12-volt battery fluid comes into contact with the skin or
eyes, immediately wash the affected area with water and seek medical
attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
Always wash your hands after handling the 12-volt battery support, termi-
nals, and other battery-related parts.
Do not allow children near the 12-volt battery.
After recharging the 12-volt battery
Have the 12-volt battery inspected at any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional as soon as
possible.
If the 12-volt battery is deteriorating, continued use may cause the 12-volt
battery to emit a malodorous gas, which may be detrimental to the health of
passengers.
When replacing the 12-volt battery
P. 7 5 3

9348-1. Specifications
GS450h_300h_OM_OM30D53E_(EE)
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
Electrical system
12-volt battery
Open voltage at 20C (68F):12.5 V or higher: Fully charged
11.0 — 12.4 V: Half charged
10.9 V or lower: Discharged
(Voltage is checked 20 minutes after
the hybrid system and all lights are
turned off.)
Charging rates4 — 5 A
Hybrid transmission
Fluid capacity*GS300h3.80 L (4.02 qt., 3.34 Imp.qt.)
GS450h5.69 L (6.01 qt., 5.01 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
Hybrid transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of your transmission accompanied
by vibration, and ultimately damage the transmission of your vehicle.

980Alphabetical index
GS450h_300h_OM_OM30D53E_(EE)
Warning buzzers
Approach warning ........308, 326
Brake system ........................830
Downshifting ........................265
Key reminder ........................865
Lexus parking assist-sensor ..348
No-handed driving warning..343
Open door .............................848
Open hood ............................848
Open moon roof....................849
Open trunk ............................849
Open window .......................849
Pre-crash braking ..................406
Seat belt reminder .................834
Warning lights ...........................105
ABS ......................................832
AFS OFF indicator ...............833
Brake hold operated
indicator .............................833
Brake system ................830, 833
Charging system ...................831
Electric power steering
system.................................833
Low fuel level .......................834
Malfunction indicator lamp ..831
Master warning light ............834
Open door .............................834
Parking brake indicator.........833
Pre-Crash Safety system .......833
Seat belt reminder light ........834
Slip indicator ........................833
SRS .......................................831
Tire pressure .........................835Warning messages .................... 839
Warning reflector storage belt .. 695
Washer ...................................... 285
Checking .............................. 748
Low washer fluid warning
message ............................. 859
Preparing and checking
before winter ..................... 434
Switch .................................. 285
Washing and waxing ................ 720
Weight ...................................... 926
Welcome light illumination
control .................................... 143
Wheels ...................................... 774
Replacing ............................. 774
Size ...................................... 936
Window glasses ........................ 215
Window lock switch ................. 215
Windows................................... 215
Power windows.................... 215
Rear window defogger......... 501
Windshield wiper de-icer ......... 502
Windshield wipers .................... 285
Intermittent windshield wipers
with interval adjuster ......... 285
Position ................................ 437
Rain-sensing windshield
wipers ................................ 287
Winter driving tips.................... 434
Wireless remote control key ..... 168
Battery-Saving Function ...... 149
Locking/Unlocking .............. 168
Replacing the battery ........... 779
WMA disc ................................ 538
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