engine Lexus GS F 2015 Owner's Manuals

4135-2. Using the air conditioning system and defogger
5
Interior features
GS350_200t_GS F_OM_OM30E87E_(EE)
■The seat heaters/seat ventilators can be used when
The engine switch is in IGNITION ON mode.
■Seat heater control (vehicles without automatic mode)
The seat heater automatically changes operations. If the engine switch is turned off while
the seat heater is operating, the starting operation of the heater differs depending on the
amount of time that elapses before it is turned back on.
■Automatic operation of the seat heater during Eco drive mode
If the driving mode select swit ch is switched to Eco drive mo de in cold temperatures, the
seat heater may be automatically operated to assist heating performance.
■Automatic operation during S-FLOW mode
The front seat heater and ventilator or the rear seat heater may automatically turn off
when S-FLOW mode is turned on during automatic mode. ( →P. 3 9 5 )
■Button lock function (vehicles with rear control panel)
To prevent inadvertent operation, some buttons on the rear armrest can be locked.
(→ P. 4 0 8 )
■When the switch is disabled (v ehicles with rear control panel)
When the rear control panel switch cannot be operated even though the button lock
function is released, check whether the switch is disabled due to selecting on
Remote Touch screen. ( →P. 4 0 1 )
■Rear control panel illumination off function (vehicles with rear control panel)
Control panel illumination on the re ar armrest can be turned off. (→P. 4 0 8 )
■Customization
The automatic operation of the front seat heaters (without seat ventilators) and the auto-
matic mode settings for the front seat heaters and ventilators or the rear seat heaters can
be changed. (Customizable features: →P. 6 4 0 )
Current operation
Starting operation mode and amount of time elapsed
until engine switch in IGNITION ON mode
0 to 15 minutesOver 15 minutes
HiHiHi
MidMidHi
LoLoHi

4165-3. Using the interior lights
GS350_200t_GS F_OM_OM30E87E_(EE)
●Illuminated entry system: The lights automatically turn on/off according to engine
switch mode, the presence of the electronic key, whether the doors are locked/
unlocked, and whether the doors are opened/closed.
●If the interior lights remain on when the engine switch is turned off, the lights will go off
automatically after 20 minutes.
●Setting (e.g. the time elapsed before lights turn off) can be changed.
(Customizable features: →P. 6 2 8 )
NOTICE
To prevent battery discharge, do not leave the lights on longer than necessary when the
engine is not running.

4265-5. Using the other interior features
GS350_200t_GS F_OM_OM30E87E_(EE)
Other interior features
To set the visor in the forward posi-
tion, flip it down.
To set the visor in the side position,
flip down, unhook, and swing it to the
side.
To use the side extender, place the
visor in the side position, then slide it
backward.
Slide the cover to open.
The light turns on when the cover is
opened.
Sun visors
1
2
3
Vanity mirrors
NOTICE
To prevent battery discharge, do not leave the vanity lights on for extended periods
while the engine is off.

4285-5. Using the other interior features
GS350_200t_GS F_OM_OM30E87E_(EE)
Please use as a power supply for electronic goods that use less than 12 V DC /
10 A (power consumption of 120 W).
The power outlets can be used when engine switch is in ACCESSORY or IGNITION
ON mode.
Fold down the armrest for use.
Power outlets
XFrontXRear
Open the lid.
NOTICE
●To avoid damaging the power outlets, close the power outlet lids when the power out-
lets are not in use.
Foreign objects or liquids that enter the power outlets may cause a short circuit.
●To prevent battery discharge, do not use the power outlets longer than necessary
when the engine is off.
Armrest
NOTICE
To prevent damage to the armrest, do not apply too much load on the armrest.

4305-5. Using the other interior features
GS350_200t_GS F_OM_OM30E87E_(EE)
●The rear sunshade can be used when the engine switch is in IGNITION ON mode.
●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 auto-
matically 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.
●Vehicles with rear control panel: To prevent inadvertent operation, some buttons on the
rear armrest can be locked. ( →P. 4 0 8 )
●Vehicles with rear control panel: Control panel illumination on the rear armrest can be
turned off. ( →P. 4 0 8 )
●Time elapsed before the reverse operation feature activates can be changed.
(Customizable features: →P. 6 2 8 )
WA R N I N G
When the rear sunshade is being operated, do not place fingers or other objects in the
fastener section or in the opening.
They may get caught, causing injury.
NOTICE
●To prevent battery discharge, do not operate the rear sunshade when the engine is
off.
●Observe the following precautions to ensure normal operation of the rear sunshade
and rear door sunshades.
• Do not place excessive load on the motor or other components of the rear sun- shade.
• Do not place objects where they may hinder opening and closing operations.
• 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.

433
6Maintenance and care
GS350_200t_GS F_OM_OM30E87E_(EE)
6-1. Maintenance and careCleaning and protecting the vehicle exterior................. 434
Cleaning and protecting the vehicle interior..................438
6-2. Maintenance Maintenance requirements...............................441
6-3. Do-it-yourself maintenance Do-it-yourself service precautions................................ 443
Hood ............................................... 445
Positioning a floor jack............. 446
Engine compartment ............... 448
Tires.................................................. 465
Tire inflation pressure ................479
Wheels ............................................ 481
Air conditioning filter ...............483
Electronic key battery ..............485
Checking and replacing fuses.............................................. 487
Light bulbs..................................... 492

4366-1. Maintenance and care
GS350_200t_GS F_OM_OM30E87E_(EE)
WA R N I N G
■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 (vehicles 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 bo dy 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.
■Precaution regarding the rear bumper with Blind Spot Monitor (if equipped)
If the paint of the rear bumper is chipped or scratched, the system may malfunction. If
this occurs, consult any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
Turn off AUTO mode of the wiper to prevent
the wiper from operating. ( →P. 2 74 )
If AUTO mode is selected, the wipers may
operate unexpectedly in the following situa-
tions, and may result in hands being caught or
other serious injuries and cause damage to the
wiper blades.

4426-2. Maintenance
GS350_200t_GS F_OM_OM30E87E_(EE)
■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 conditioning sys-
tem 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. 1 0 9 )
If you notice any of these clues, take your vehicle to any authorized Lexus dealer or
repairer, or another duly qualified and equipp ed professional as soon as possible. Your
vehicle may need adjustment or repair.
WA R N I N G
■If your vehicle is not properly maintained
Improper maintenance could result in serious damage to the vehicle and possible
death or serious injury.
■Handling of the battery
Battery posts, terminals and related accessories contain lead and lead compounds
which are known to cause brain damage. Wash your hands after handling. ( →P. 4 6 0 )

443
6
6-3. Do-it-yourself maintenance
Maintenance and care
GS350_200t_GS F_OM_OM30E87E_(EE)
Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the correct proce-
dure as given in these sections.
ItemsParts and tools
Battery condition
(
→ P. 4 6 0 ) •Warm water •Baking soda •Grease
• Conventional wrench (for terminal clamp bolts)
• Distilled water
Engine/intercooler
coolant level
(
→ P. 4 5 8 ) •“
To y o t a Super Long Life Coolant” or a similar high quality
ethylene glycol-based non-silicate, non-amine, non-nitrite
and non-borate coolant with long-life hybrid organic acid
technology
“Toyota Super Long Life Coolant” is pre-mixed with 50%
coolant and 50% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
( → P. 4 5 3 )• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( →P. 4 8 7 )• Fuse with same amperage rating as original
Light bulbs
(→ P. 4 9 2 )• Bulb with same number and wattage rating as original
• Phillips-head screwdriver•Flathead screwdriver
•Wrench
Radiator and
condenser
(→ P. 4 6 0 )
Tire inflation
pressure ( →P. 4 7 9 )• Tire pressure gauge• Compressed air source
Wa s h e r f l u i d
(→ P. 464)• Water or washer fluid containing antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)

4446-3. Do-it-yourself maintenance
GS350_200t_GS F_OM_OM30E87E_(EE)
WA R N I N G
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 or
the battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and corro-
sive sulfuric acid.
●Take care because brake fluid can harm your hands or eyes and damage painted sur-
faces. 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.
■When working near the electric cooling fans or radiator grille
Be sure the engine switch is off.
With the engine switch in IGNITION ON mode, the electric cooling fans may auto-
matically start to run if the air conditioning is on and/or the coolant temperature is high.
( → P. 4 6 0 )
■Safety glasses
Wear safety glasses to prevent flying or fallin g material, fluid spray, etc. from getting in
your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear due to dirt
in the air.
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear or when
the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, it may indicate a serious problem.