2012 Lexus GS350 engine

6345-7. Other interior features
GS350/250_EE (OM30C36E)
NOTICE
To prevent damage to the seat heaters/seat ventilators
Do not put heavy objects that have an uneven surface on the seat and do not
stick sharp objects (needles, nails, etc.) into the seat.
To prevent battery discharge
Turn the seat heaters/seat ventilators off when the engine is off.

6375-7. Other interior features
5
Interior features
GS350/250_EE (OM30C36E)Pull the tab of the rear door sun-
shade and hook the shade on
using the anchors.
To retract the rear door sunshade,
unhook the shade and retract it
slowly.
The rear sunshade can be used when
The engine switch is in IGNITION ON mode.
Operating the rear sunshade after the engine is turned off
The rear sunshade can be operated for approximately 1 minute even after the
engine switch is turned to ACCESSORY mode or turned off.
Reverse operation feature
To ensure adequate rear visibility, the rear sunshade automatically lowers
when the shift lever is shifted to R.
However, the rear sunshade is raised again if any of the following occurs:
The button is pressed again.*
Shift the shift lever into P.
The shift lever is shifted out of R, and the vehicle reaches a speed of 15 km/
h (9 mph).
If the engine is off when the rear sunshade has been lowered due to the
reverse operation feature, it will not be raised even when the engine is
turned on again and the vehicle reaches a speed of 15 km/h (9 mph). To
raise the sunshade again, press the button.
*: Occasionally, the reverse function may not be carried out after the switch
has been pressed. Repeat the above operation to operate the function.
Rear door sunshades

6385-7. Other interior features
GS350/250_EE (OM30C36E)
Button lock function (vehicles with rear control panel)
To prevent inadvertent operation, some buttons on the rear armrest can be
locked.
(P. 429)
Rear control panel illumination off function (vehicles with rear control panel)
Control panel illumination on the rear armrest can be turned off. (P. 429)
Customization
Time elapsed before the reverse operation feature activates can be changed.
(Customizable features: P. 855)
CAUTION
When the rear sunshade is being operated
Do not place fingers or other objects in the fastener section or in the open-
ing.
They may get caught, causing injury.
NOTICE
To prevent battery discharge
Do not operate the rear sunshade when the engine is off.
To ensure normal operation of the rear sunshade and rear door sunshades
Observe the following precautions.
Do not place excessive load on the motor or other components of the rear
sunshade.
Do not place objects where they may hinder opening and closing opera-
tions.
Do not attach items to the rear sunshade and rear door sunshades.
Keep the opening clean and clear of obstructions.
Do not operate the rear sunshade continuously for long periods of time.

643
6Maintenance and care
GS350/250_EE (OM30C36E)
6-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ......... 644
Cleaning and protecting
the vehicle interior .......... 648
6-2. Maintenance
Maintenance
requirements ................... 651
6-3. Do-it-yourself maintenance
Do-it-yourself service
precautions...................... 654
Hood ................................. 657
Positioning a floor jack ..... 658
Engine compartment ......... 660
Tires .................................. 672
Tire inflation pressure ....... 689
Wheels .............................. 691
Air conditioning filter ....... 693
Electronic key battery ....... 695
Checking and replacing
fuses ................................ 698
Light bulbs ........................ 720

6466-1. Maintenance and care
GS350/250_EE (OM30C36E)
CAUTION
When washing the vehicle
Do not apply water to the inside of the engine compartment. Doing so may
cause the electrical components etc. to catch fire.
When cleaning the windshield (with rain-sensing windshield wipers)
When the upper part of the windshield where the raindrop sensor is
located is touched by hand
When a wet rag or similar is held close to the raindrop sensor
If something bumps against the windshield
If you directly touch the raindrop sensor body or if something bumps into
the raindrop sensor
Precautions regarding the exhaust pipes and rear bumper diffusers
Exhaust gases cause the exhaust pipes and rear bumper diffusers to become
quite hot.
When washing the vehicle, be careful not to touch the pipes and diffusers
until they have cooled sufficiently, as touching hot exhaust pipes and rear
bumper diffusers can cause burns.
Set the wipers to the intermittent wind-
shield wipers. (P. 245)
If AUTO mode is selected, the wipers
may operate unexpectedly in the follow-
ing situations, and may result in hands
being caught or other serious injuries and
cause damage to the wiper blades.

6526-2. Maintenance
GS350/250_EE (OM30C36E)
Where to go for service?
In order to maintain your vehicle in the best possible condition, Lexus rec-
ommends that all repairs and service operations be carried out by authorized
Lexus dealers or repairers or other duly qualified and equipped professionals.
For repairs and services covered by your warranty, please visit an authorized
Lexus dealer or repairer, who will use genuine Lexus parts in repairing any
difficulties you may encounter. There can also be advantages in utilizing
authorized Lexus dealers or repairers for non-warranty repairs and services,
as members of the Lexus network will be able to expertly assist you with any
difficulties you may encounter.
Your Lexus dealer or repairer, or another duly qualified and equipped profes-
sional will perform all of the scheduled maintenance on your vehicle reliably
and economically due to their experience with Lexus vehicles.
Does your vehicle need repairs?
Be on the alert for changes in performance and sounds, and visual tip-offs
that indicate service is needed. Some important clues are:
Engine missing, stumbling or pinging
Appreciable loss of power
Strange engine noises
A fluid leak under the vehicle (However, water dripping from the air condi-
tioning system after use is normal.)
Change in exhaust sound (This may indicate a dangerous carbon monoxide
leak. Drive with the windows open and have the exhaust system checked
immediately.)
Flat-looking tires, excessive tire squeal when cornering, uneven tire wear
Vehicle pulls to one side when driven straight on a level road
Strange noises related to suspension movement
Loss of brake effectiveness, spongy feeling brake pedal, pedal almost
touches the floor, vehicle pulls to one side when braking
Engine coolant temperature continually higher than normal (P. 9 9 )
If you notice any of these clues, take your vehicle to any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional as
soon as possible. Your vehicle may need adjustment or repair.

6546-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the cor-
rect procedure as given in these sections.
ItemsParts and tools
Battery condition (P. 667)
•Warm water
• Baking soda
•Grease
• Conventional wrench
(for terminal clamp bolts)
• Distilled water
Engine coolant level (P. 665)
•“To y o t a Super Long Life Cool-
ant” or a similar high quality eth-
ylene glycol-based non-silicate,
non-amine, non-nitrite and non-
borate coolant with long-life
hybrid organic acid technology
“Toyota Super Long Life Cool-
ant” is pre-mixed with 50% cool-
ant and 50% deionized water.
• Funnel (used only for adding
coolant)
Engine oil level (P. 662)
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel
• Funnel (used only for adding
engine oil)
Fuses (P. 700)• Fuse with same amperage rating
as original

655 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350/250_EE (OM30C36E)
Light bulbs (P. 722)
• Bulb with same number and watt-
age rating as original
• Phillips-head screwdriver
• Flathead screwdriver
•Wrench
Radiator and condenser (P. 667)
Tire inflation pressure (P. 691)• Tire pressure gauge
• Compressed air source
Wa s h e r f l u i d (P. 671)
• Water or washer fluid containing
antifreeze (for winter use)
• Funnel (used only for adding
water or washer fluid)
CAUTION
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions.
When working on the engine compartment
Keep hands, clothing and tools away from the moving fan and engine
drive belt.
Be careful not to touch the engine, radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil and other fluids may also be hot.
Do not leave anything that may burn easily, such as paper and rags, in the
engine compartment.
Do not smoke, cause sparks or expose an open flame to fuel or the battery.
Fuel and battery fumes are flammable.
Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
Take care because brake fluid can harm your hands or eyes and damage
painted surfaces. If fluid gets on your hands or in your eyes, flush the
affected area with clean water immediately.
If you still experience discomfort, consult a doctor.
ItemsParts and tools