engine Lexus GS350 2017 Owner's Manual

4325-5. Using the other interior features
GS350_200t_GS F_OM_OM30F83E_(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:

4365-5. Using the other interior features
GS350_200t_GS F_OM_OM30F83E_(EE)
■Emergency Assistance Button (“SOS”)
In the event of an emergency, push the “SOS” button to reach the Public
Safety Answering Point (PSAP). The answering agent will determine your
vehicle’s location, assess the emergency, and dispatch the necessary assis-
tance required.
If you accidentally press the “SOS” button, tell the agent that you are not experi-
encing an emergency.
When the engine switch is turned to IGNITION ON mode, the red indicator
light will illuminate for 10 seconds and then the green indicator light will illum i-
nate for 2 seconds, indicating that the system is enabled. The indicator lights indi-
cate the following: ● If the green indicator light illuminates and stays on, the system is enabled.
● If the green indicator light flashes, an emergency call is being made (either
automatically or manually).
● If no indicator lights illuminate, the system is not enabled.
● If the red indicator light illuminates any time other than immediately after the
engine switch is turned to IGNITION ON mode, the system may be malfunc-
tioning or the backup battery may be depleted. Contact any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer.
The service life of the backup battery is 3 years or more.
Indicator lights

439
6Maintenance and care
GS350_200t_GS F_OM_OM30F83E_(EE)
6-1. Maintenance and careCleaning and protecting the vehicle exterior ................ 440
Cleaning and protecting the vehicle interior.................. 444
6-2. Maintenance Maintenance requirements ............................ 447
6-3. Do-it-yourself maintenance Do-it-yourself service precautions................................ 449
Hood ................................................ 451
Positioning a floor jack ............ 452
Engine compartment ............... 454
Tires ...................................................471
Tire inflation pressure ..............485
Wheels ........................................... 487
Air conditioning filter ...............489
Electronic key battery............... 491
Checking and replacing fuses.............................................. 493
Light bulbs.....................................498

4426-1. Maintenance and care
GS350_200t_GS F_OM_OM30F83E_(EE)
WARNING
■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 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.
■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 re tailer or Lexus authorized repairer, or any
reliable repairer.
Turn off AUTO mode of the wiper to prevent the wiper from operating. ( P. 276)
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.

4486-2. Maintenance
GS350_200t_GS F_OM_OM30F83E_(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 sque al 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. 109, 115)
If you notice any of these clues, take your vehicle to any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer as soon as possible. Your vehicle may
need adjustment or repair.
WARNING
■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. 466)

4506-3. Do-it-yourself maintenance
GS350_200t_GS F_OM_OM30F83E_(EE)
WARNING
The engine compartment contains many mech anisms and fluids that may move suddenly,
become hot, or become electrically energize d. 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 b attery. 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 t he 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. 466)
■Safety glasses
Wear safety glasses to prevent flying or falling 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 refillin g, it may indicate a serious problem.

4546-3. Do-it-yourself maintenance
GS350_200t_GS F_OM_OM30F83E_(EE)
Engine compartment
GS350
Fuse boxes (P. 493)
Battery ( P. 466)
Engine oil level dipstick( P. 459)
Engine coolant reservoir ( P. 464) Engine oil filler cap (
P. 461)
Washer fluid tank ( P. 470)
Electric cooling fans
Condenser ( P. 466)
Radiator ( P. 466)1
2
3
4
5
6
7
8
9

455
6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350_200t_GS F_OM_OM30F83E_(EE)
GS200t
Fuse boxes ( P. 493)
Battery ( P. 466)
Intercooler coolant reservoir ( P. 465)
Engine oil level dipstick( P. 459)
Engine oil filler cap ( P. 461) Engine coolant reservoir
( P. 464)
Washer fluid tank ( P. 470)
Condenser ( P. 466)
Electric cooling fans
Radiator ( P. 466)1
2
3
4
5
6
7
8
9
10

4566-3. Do-it-yourself maintenance
GS350_200t_GS F_OM_OM30F83E_(EE)
GS F
For right-hand drive vehicles:
The battery and the fuse box in front of the battery are located on the opposite
side of the engine compartment.
Fuse boxes ( P. 493)
Battery ( P. 466)
Engine oil level dipstick( P. 459)
Engine coolant reservoir ( P. 464) Engine oil filler cap (
P. 461)
Washer fluid tank ( P. 470)
Electric cooling fans
Condenser ( P. 466)
Radiator ( P. 466)1
2
3
4
5
6
7
8
9

457
6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350_200t_GS F_OM_OM30F83E_(EE)
■Removing the engine compartment cover
GS350/GS200t (Right-hand side)
GS350/GS200t (Center)
GS F
Engine compartment cover