battery Lexus GS350 2012 Repair Manual

8257-2. Steps to take in an emergency
7
When trouble arises
GS350/250_EE (OM30C36E)
If the vehicle battery is discharged
If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your vehicle by following
the steps below.
Open the hood. (P. 657)
The following procedures may be used to start the engine if the
vehicle’s battery is discharged.
You can also call any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
1

8267-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)Connect the jumper cables according to the following procedure:
Connect a positive jumper cable clamp to the positive (+) bat-
tery terminal on your vehicle.
Connect the clamp on the other end of the positive cable to the
positive (+) battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery ter-
minal on the second vehicle.
Connect the clamp at the other end of the negative cable to a
solid, stationary, unpainted metallic point away from the bat-
tery and any moving parts, as shown in the illustration.
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
switch off.
Maintain the engine speed of the second vehicle and start the
engine of your vehicle by turning the engine switch to IGNI-
TION ON mode.
2
Ty p e A
Ty p e B
1
2
3
4
3
4
5

8277-2. Steps to take in an emergency
7
When trouble arises
GS350/250_EE (OM30C36E)Once the vehicle’s engine has started, remove the jumper cables
in the exact reverse order from which they were connected.
Once the engine 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 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.
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 cer-
tain 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 auto-
matically during driving.)
When recharging or replacing the battery
For vehicles with an alarm: make sure the key is not inside the vehicle when
recharging or replacing the battery to prevent the doors from being locked
with the key left inside the vehicle when the alarm operates.
In some cases, it may not be possible to unlock the doors using the smart
entry & start system when the battery is discharged. Use the wireless
remote control or the mechanical key to lock or unlock the doors.
The engine may not start on the first attempt after the battery has recharged
but will start normally after the second attempt. This is not a malfunction.
The engine switch mode is memorized by the vehicle. When the battery is
reconnected, the system will return to the mode it was in before the battery
was discharged. Before disconnecting the battery, turn the engine switch
off.
If you are unsure what mode the engine switch was in before the battery
discharged, be especially careful when reconnecting the battery.
6

8287-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)
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 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
battery.
Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while
related parts contain lead and lead compounds. Observe the following pre-
cautions when handling 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, cloth-
ing or the vehicle body.
Do not lean over the battery.
In the event that 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.

8488-1. Specifications
GS350/250_EE (OM30C36E)
*: 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
Battery
Open voltage at 20 C
(68 F):
Specific gravity read-
ing at 20C (68F):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 lights are turned off.)
1.250  1.290 Fully charged
1.160  1.200 Half charged
1.060  1.100 Discharged
Charging rates
Quick charge
Slow charge15 A max.
5 A max.
Automatic transmission
Fluid capacity*GS2507.5 L (7.9 qt., 6.6 Imp.qt.)
GS35010.0 L (10.6 qt., 8.8 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
Automatic 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.

865
8 8-2. Customization
Vehicle specifications
GS350/250_EE (OM30C36E)
Vehicle customization
When the smart entry & start system is off, the “Select doors to unlock”
cannot be customized.
When the doors remain closed after unlocking the doors and the “Auto
relock timer” activates, the signals will be generated in accordance with the
“Lock/unlock feedback lights” settings.
When customizing using the Remote Touch
Stop the vehicle in a safe place, apply the parking brake, and shift the shift
lever to P. Also, to prevent battery discharge, leave the engine running while
customizing the features.
CAUTION
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 haz-
ard.
NOTICE
During customization
To prevent battery discharge, ensure that the engine is running while cus-
tomizing features.

8668-3. Items to initialize
GS350/250_EE (OM30C36E)
Items to initialize
*: If equipped
The following item must be initialized for normal system operation
after such cases as the battery being reconnected, or maintenance
being performed on the vehicle:
ItemWhen to initializeReference
Tire pressure warning sys-
tem
*
• When rotating the tires
• When changing the tire
inflation pressure by chang-
ing traveling speed or load
weight, etc.
P. 6 7 5

868What to do if... (Troubleshooting)
GS350/250_EE (OM30C36E)
What to do if... (Troubleshooting)
If you lose your mechanical keys, new genuine mechani-
cal keys can be made by any authorized Lexus dealer or
repairer, or another duly qualified and equipped profes-
sional. (P. 120)
If you lose your electronic keys, the risk of vehicle theft
increases significantly. Contact any authorized Lexus
dealer or repairer, or another duly qualified and equipped
professional immediately. (P. 122)
Is the electronic key battery weak or depleted? (P. 697)
Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. (P.
208)
Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the
electronic key on your person.
The function may not operate properly due to the condi-
tion of the radio wave. (P. 130)
If you have a problem, check the following before contacting any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked

870What to do if... (Troubleshooting)
GS350/250_EE (OM30C36E)
Did you press the engine switch while firmly depressing
the brake pedal? (P. 207)
Is the shift lever in P? (P. 211)
Is the electronic key anywhere detectable inside the vehi-
cle?
(P. 126)
Is the steering wheel unlocked? (P. 212)
Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way.
(P. 823)
Is the battery discharged? (P. 825)
Is the engine switch in IGNITION ON mode?
If you cannot release the shift lever by depressing the
brake pedal with the engine switch in IGNITION ON
mode
(P. 818)
If you think something is wrong
The engine does not start
The shift lever cannot be shifted from P even if you depress
the brake pedal

877Alphabetical index
GS350/250_EE (OM30C36E)
Anti-lock Brake System (ABS) .333
Function ................................333
Warning light........................750
Warning message..................761
Approach warning (dynamic
radar cruise control) ................264
Armrest ......................................635
Armrest door .............................639
Ashtrays.....................................626
Assist grip..................................641
Audio input................................536
Audio system .............................432
Audio input ...........................536
AUX port/
USB port ............536, 512, 524
Bluetooth
® audio ..................498
CD/DVD player ....................467
CD/DVD player information 488
DVD video ...........................475
iPod.......................................522
MP3/WMA disc ...................469
Optimal use...........................533
Portable music player ...........536
Radio ....................................458
Rear seat audio controls........537
Steering wheel audio switch .543
USB memory ........................510
Automatic headlight leveling
system ....................................231
Automatic High Beam ..............233
Automatic light control system 228Automatic transmission ............ 215
If the shift lever cannot be
shifted from P .................... 818
M mode ................................ 219
Paddle shift switches ........... 218
AUX port .................................. 536
Auxiliary boxes ........................ 620
AVS (Adaptive Variable
Suspension system) ................ 334
Back-up light
Replacing light bulb............. 729
Wattage ................................ 853
Battery ...................................... 667
Battery checking .................. 667
If the vehicle has discharged
battery................................ 825
Preparing and checking
before winter ..................... 359
Warning light ....................... 750
Blind Spot Monitor (BSM) ...... 354
Bluetooth
®
Audio system ....................... 498
Hands-free system
(for cellular phone)............ 542
Brake
Fluid ..................................... 849
Parking brake ....................... 225
Warning light ............... 749, 751
Warning message................. 757
B