2012 Lexus GX460 battery

5
When trouble arises
741
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
If the vehicle battery is discharged
The following procedures may be used to start the engine if the vehicle’s
battery is discharged.
You can call your Lexus dealer, or qualified repair shop.
If you have a set of jumper (or booster) cables and a second vehicle
with a 12 volt battery, you can jump start your Lexus by following the
steps below.
Open the hood. ( →P. 6 0 8 )
Connecting the jumper cables according to the following procedure: Positive (+) battery terminal on your vehicle.
Positive (+) battery terminal on the second vehicle.
Negative (-) battery terminal on the second vehicle.
Connect the jumper cable to ground on your vehicle as shown in the
illustration.
STEP1
STEP2

742
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■To prevent battery discharge
●Turn off the headlights and the audio system while the engine 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, etc.
■Charging the battery
The electricity stored in the 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 battery may discharge, and the
engine may be unable to start. (The battery recharges automatically during driving.)
Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately 5
minutes to recharge the battery of your vehicle.
Open and close any of the doors of your vehicle with the
“ENGINE START STOP” switch off.
Maintain the engine speed of the second vehicle and start the
engine of your vehicle by turning the “ENGINE START STOP”
switch to IGNI TION ON mode.
Once your vehicle’s engine has started, remove the jumper
cables in the exact reverse order in which they were con-
nected.
Once the engine starts, have the vehicle checked at your Lexus dealer
as soon as possible.STEP3
STEP4
STEP5
STEP6

5
When trouble arises
743
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
CAUTION
■Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable
gas that may be emitted from the battery:
●Make sure the jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any part other than the intended terminal.
●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 bat-
tery.
■Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while related parts
contain lead and lead compounds. Observe the following precautions when han-
dling the battery:
●When working with the battery, always wear safety glasses and take care not to
allow any battery fluids (acid) to come into contact with skin, clothing or the vehi-
cle body.
●Do not lean over the battery.
●If the 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 battery support, terminals, and other
battery-related parts.
●Do not allow children near the battery.
NOTICE
■When handling jumper cables
When connecting the jumper cables, ensure that they do not become entangled in
the cooling fans or belt.

758
6-1. Specifications
GX460_U.S.A. (OM60J00U)
Electrical system
Front differential
*: Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at the
factory.
Use Lexus approved “Toyota Genuine Differential Gear Oil” or an equivalent of
matching quality to satisfy the above specification. Please contact your Lexus
dealer for further details.
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 is checked 20 minutes after the
engine and all the lights are turned off.)
Charging rates5A max.
Oil capacity1.48 qt. (1.40 L, 1.23 Imp.qt.)
Oil type and viscosity*Toyota Genuine Differential
Gear Oil LT 75W-85 GL5 or equivalent

775
6-1. Specifications
6
Vehicle specifications
GX460_U.S.A. (OM60J00U)
Tire related termMeaning
Normal occupant weight150 lb. (68 kg) times the number of occupants spec-
ified in the second column of Table 1 that follows
Occupant distributionDistribution of occupants in a vehicle as specified in
the third column of Table 1* below
Production options
weight
The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they replace, not previously
considered in curb weight or accessory weight,
including heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and special trim
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
Rim diameter
(Wheel diameter)Nominal diameter of the bead seat
Rim size designationRim diameter and width
Rim type designationThe industry manufacturer’s designation for a rim by
style or code
Rim widthNominal distance between rim flanges
Vehicle capacity weight
(Total load capacity)The rated cargo and luggage load plus 150 lb. (68
kg) times the vehicle’s designated seating capacity

801
6-2. Customization
6
Vehicle specifications
GX460_U.S.A. (OM60J00U)
CAUTION
■Cautions during customization
As the engine needs to be running during customization, ensure that the vehicle is
parked in a place with adequate ventilation. In a closed area such as a garage,
exhaust gases including harmful carbon monoxide (CO) may collect and enter the
vehicle. This may lead to death or a serious health hazard.
NOTICE
■During customization
To prevent battery discharge, ensure that the engine is running while customizing
features.

802
GX460_U.S.A. (OM60J00U)
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Engine oil maintenance
data•After changing engine oilP. 6 1 4
The following items must be initialized for normal system operation in cases
such as after the battery is reconnected, or maintenance is performed on
the vehicle.

821
Alphabetical index
GX460_U.S.A. (OM60J00U)
Back doorBack door ................................................ 53
Wireless remote control.................... 47
Back-up lights
Replacing light bulbs ......................... 671
Wattage ................................................. 763
Battery Battery..................................................... 623
Checking ............................................... 623
If the vehicle has discharged
battery.................................................... 741
Preparing and checking
before winter.................................... 366
Bluetooth
®*...............................464, 485
Bottle holders/door pockets........... 529
Brake Fluid ............................................................ 619
Parking brake ........................................ 193
Brake assist ............................................. 335
Brake in tips .............................................. 169
Brightness control Multi-information display light
control ................................................... 215
Instrument cluster light control.....196
Care Exterior .................................................. 588
Interior..................................................... 593
Seat belts ............................................... 594
Cargo capacity ..................................... 359
Cargo hooks .......................................... 558
Cargo net hooks .................................. 559 CD player/changer
*.......................... 423
Center differential lock/unlock ...... 323
Chains ....................................................... 366
Child restraint system
Booster seats, definition .................. 146
Booster seats, installation ............... 154
Convertible seats, definition.......... 146
Convertible seats, installation ....... 154
Front passenger occupant classification system ....................... 139
Infant seats, definition ........................ 146
Infant seats, installation ..................... 154
Installing CRS with lower anchorages......................................... 152
Installing CRS with seatbelts ......... 154
Installing CRS with top straps....... 160
Child safety Airbag precautions .............................132
Battery precautions ..............623, 743
Child restraint system ....................... 146
Child-protectors .....................................51
How your child should wear
the seatbelt........................................... 88
Installing child restraints..................... 151
Moon roof precautions....................108
Power window lock switch .............. 101
Power window precautions .......... 103
Removed electronic key
battery precautions ...................... 646
Seat belt extender precautions...... 92
Seat belt precautions ..........................89
Seat heater precautions................. 553B
C
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.