engine Lexus GS350 2012 Owner's Manual

8448-1. Specifications
GS350/250_EE (OM30C36E)
Engine oil selection (GS350)
“Toyota Genuine Motor Oil” is used in your Lexus vehicle.
Lexus recommends the use of approved “Toyota Genuine Motor
Oil”. Another motor oil of matching quality can also be used.
Oil grade:
0W-20, 5W-20, 5W-30 and 10W-30:
API grade SL “Energy-Conserving”, SM “Energy-Conserving”,
SN “Resource-Conserving” or ILSAC multigrade engine oil
15W-40 and 20W-50:
API grade SL, SM or SN multigrade engine oil

845
8 8-1. Specifications
Vehicle specifications
GS350/250_EE (OM30C36E)Recommended viscosity (SAE):
SAE 0W-20 is filled into your
Lexus vehicle at manufactur-
ing, and the best choice for
good fuel economy and good
starting in cold weather.
If SAE 0W-20 oil is not avail-
able, SAE 5W-30 oil may be
used. However, it should be
replaced with SAE 0W-20 at
the next oil change.
If you use SAE 10W-30 or a
higher viscosity engine oil in
extremely low temperatures,
the engine may become diffi-
cult to start, so SAE 5W-30 or
lower viscosity engine oil is
recommended.
Temperature range anticipated
before next oil change.Preferred

8468-1. Specifications
GS350/250_EE (OM30C36E)Oil viscosity (0W-20 is explained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which
allows cold startability. Oils with a lower value before the W
allow for easier starting of the engine in cold weather.
• The 20 in 0W-20 indicates the viscosity characteristic of the
oil when the oil is at high temperature. An oil with a higher
viscosity (one with a higher value) may be better suited if the
vehicle is operated at high speeds, or under extreme load con-
ditions.
How to read oil container labels:
Either or both API registered marks are added to some oil con-
tainers to help you select the oil you should use.
API Service Symbol
Top portion: The oil quality des-
ignation by API (American
Petroleum Institute) (SN)
Center portion: The SAE vis-
cosity grade (SAE 0W-20)
Lower portion: “Resource-Con-
serving” means that the oil has
fuel saving and environmental
protection capabilities.
ILSAC Certification Mark
The ILSAC (International
Lubricant Standardization and
Approval Committee) Certifica-
tion Mark is displayed on the
front of the container.
1
2

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.

849
8 8-1. Specifications
Vehicle specifications
GS350/250_EE (OM30C36E)
Your Lexus vehicle is filled with “Toyota Genuine Differential Oil” at the
factory.
Use Lexus approved “Toyota Genuine Differential Gear Oil” or an equiva-
lent of matching quality to satisfy the above specification. Please contact any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional for further details.
*: Minimum pedal clearance when depressed with a force of 500 N (51.0
kgf, 112.4 lbf) while the engine is operating.
Front differential (AWD models)
Oil capacity 0.70 L (0.74 qt., 0.62 Imp.qt.)
Oil type and viscosity
Hypoid gear oil API GL-5
Above -18C (0F): SAE90
Below -18C (0F): SAE80W or SAE80W-90
Rear differential
Oil capacityGS2501.15 L (1.22 qt., 1.01 Imp.qt.)
GS3501.35 L (1.43 qt., 1.19 Imp.qt.)
Oil type and viscosity
Toyota Genuine Differential gear oil
LT
75W-85 GL-5 or equivalent
Brakes
Pedal
clearance
*
2WD115 mm (4.5 in.) Min.
AW D126 mm (5.0 in.) Min.
Pedal free play1.0 — 2.0 mm (0.04 — 0.08 in.)
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3
Steering
Free playLess than 30 mm (1.2 in.)

8548-1. Specifications
GS350/250_EE (OM30C36E)
Fuel information
Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehicle has a fuel tank opening that
only accommodates the special nozzle on unleaded fuel pumps.
If your engine knocks
Consult any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
You may occasionally notice light knocking for a short time while acceler-
ating or driving uphill. This is normal and there is no need for concern.
EU area:
Your vehicle must use only unleaded gasoline conforming to Euro-
pean standard EN228.
For optimum engine performance, select unleaded gasoline with a
Research Octane Number of 95 or higher.
Except EU area:
Your vehicle must use only unleaded gasoline.
For optimum engine performance, select unleaded gasoline with a
Research Octane Number of 95 or higher.

855
8 8-1. Specifications
Vehicle specifications
GS350/250_EE (OM30C36E)
NOTICE
Notice on fuel quality
Do not use improper fuels. If improper fuels are used, the engine will be
damaged.
Do not use leaded gasoline.
Leaded gasoline will cause the three-way catalytic converter to lose its
effectiveness and the emission control system to function improperly.
Gasoline engine (EU area): Bioethanol fuel sold under names such as
“E50” or “E85” and fuel containing a large amount of ethanol should not
be used. The use of these fuels will damage the vehicle’s fuel system. In
case of any doubt, ask any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
Gasoline engine (except EU area): Bioethanol fuel sold under names such
as “E50” or “E85” and fuel containing a large amount of ethanol should
not be used. Your vehicle can use gasoline mixed with 10% max ethanol.
The use of fuel with more than 10% ethanol content (E10) will damage
the vehicle’s fuel system. You must ensure that refueling is carried out
only from a source where fuel specification and quality can be guaranteed.
In case of any doubt, ask any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.

8608-2. Customization
GS350/250_EE (OM30C36E)
Front seats
(P. 157)
“Driver’s seat easy exit”
(Driver’s seat move-
ment when exiting the
Standard
Off
O—O
Partial
Selecting the door link-
ing driving position
memory with door
unlock operation
Driver’s
doorAll doors——O
Outside
rear view
mirrors
(P. 174)Automatic mirror fold-
ing and extending opera-
tion
*1
Linked to
the
locking/
unlocking
of the
doorsOff
——O
Linked to
operation
of the
engine
switch
Power
windows
(P. 178)
and moon
roof
*1
(P. 181)
Mechanical key linked
operationOffOn——O
Wireless remote control
linked operationOffOn——O
Buzzer sounds if oper-
ated using wireless
remote control
OnOff——O
ItemFunctionDefault
settingCustom-
ized set-
ting
123

863
8 8-2. Customization
Vehicle specifications
GS350/250_EE (OM30C36E)
Automatic
air condi-
tioning
system
(P. 409)
“Efficient ventilation
mode” (Switching
between outside air and
recirculated air mode
linked to “AUTO”
switch operation)
OnOffO—O
“Auto A/C mode” (A/C
Auto switch operation)OnOffO—O
“Smog sensor sensitiv-
ity” (Exhaust gas sensor
sensitivity)
Standard-3 to 3O—O
Illumina-
tion
(P. 6 1 1 )
Interior lights illumina-
tion controlOnOff——O
“Interior lights off
timer” (Time elapsed
before the interior lights
turn off)
15 sec-
onds
7.5
seconds
O—O30
seconds
Operation after the
engine switch is turned
off
OnOff——O
Operation when the
doors are unlockedOnOff——O
Operation when you
approach the vehicle
with the electronic key
on your person
OnOff——O
Footwell lightingOnOff——O
Outer foot lightsOnOff——O
ItemFunctionDefault
settingCustom-
ized set-
ting
123

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.