service Lexus GS300h 2017 User Guide

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6-3. Do-it-yourself maintenance
Maintenance and care
GS450h_300h_OM_OM30F92E_(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
12-volt battery
condition ( P. 412)

4086-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30F92E_(EE)
■After changing the engine oil
The engine oil maintenance data should be reset. Perform the following procedures:
Press or of the meter control switch and select .
Press or of the meter control switch an d select “Vehicle Settings”. Then press
.
Press or of the meter control switch and select “Oil Maintenance”. Then press
.
Select the “Yes” and press .
A message is displayed on the multi-informa-
tion display.
WARNING
■Used engine oil
●Used engine oil contains potentially harm ful contaminants which may cause skin dis-
orders such as inflammation and skin cancer, so care should be taken to avoid pro-
longed and repeated contact. To remove used engine oil from your skin, wash
thoroughly with soap and water.
●Dispose of used oil and filters only in a safe and acceptable manner. Do not dispose of
used oil and filters in household trash, in sewers or onto the ground.
Call any authorized Lexus retailer or Le xus authorized repairer, or any reliable
repairer, service station or auto parts st ore for information concerning recycling or
disposal.
●Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
●Avoid overfilling, or the engine could be damaged.
●Check the oil level on the dipstick every time you refill the vehicle.
●Be sure the engine oil filler cap is properly tightened.
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4286-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30F92E_(EE)
NOTICE
■Repairing or replacing tires, wheels, tire pressure warning valves, transmitters and
tire valve caps (vehicles with the tire pressure warning system)
●When removing or fitting the wheels, tires or the tire pressure warning valves and
transmitters, contact any authorized Lexus retailer or Lexus authorized repairer, or
any reliable repairer as the tire pressure warning valves and transmitters may be dam-
aged if not handled correctly.
●Make sure to install the tire valve caps. If the tire valve caps are not installed, water
could enter the tire pressure warning valv es and the tire pressure warning valves
could be bound.
●When replacing tire valve caps, do not use tire valve caps other than those specified.
The cap may become stuck.
■To avoid damage to the tire pressure warning valves and transmitters (vehicles with
the tire pressure warning system)
When a tire is repaired with liquid sealants, the tire pressure warning valve and trans-
mitter may not operate properly. If a liquid sealant is used, contact any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer or other qualified
service shop as soon as possible. After use of liquid sealant, make sure to replace the
tire pressure warning valve and transmitte r when repairing or replacing the tire.
(  P. 418)
■Driving on rough roads
Take particular care when driving on roads with loose surfaces or potholes.
These conditions may cause losses in tire inflation pressure, reducing the cushioning
ability of the tires. In addition, driving on rough roads may cause damage to the tires
themselves, as well as the vehicle’s wheels and body.
■Low profile tires (except 225/50R17 tires)
Low profile tires may cause greater damage than usual to the tire wheel when sustain-
ing impact from the road surface. Therefore, pay attention to the following:
●Be sure to use proper tire inflation pressu re. If tires are under-inflated, they may be
damaged more severely.
●Avoid potholes, uneven pavement, curbs an d other road hazards. Failure to do so
may lead to severe tire and wheel damage.
■If tire inflation pressure of each tire becomes low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

4326-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30F92E_(EE)
WARNING
■When replacing wheels
●Do not use wheels that are a different size from those recommended in the Owner’s
Manual, as this may result in a loss of handling control.
●Never use an inner tube in a leaking wheel which is designed for a tubeless tire. Doing
so may result in an accident, causing death or serious injury.
●Except for vehicles with steel spare wheel: Do not install steel wheels.
The wheel contact surface could be damaged, and the wheel could come off while
driving, which could lead to an accident re sulting in death or serious injury. (except
for vehicles with steel spare wheel)
■Use of defective wheels prohibited
Do not use cracked or deformed wheels.
Doing so could cause the tire to leak air during driving, possibly causing an accident.
NOTICE
■Replacing tire pressure warning valves and transmitters (vehicles with the tire pres-
sure warning system)
●Because tire repair or replacement may affe ct the tire pressure warning valves and
transmitters, make sure to have tires se rviced by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer or other qualified service shop. In
addition, make sure to purchase your tire pressure warning valves and transmitters at
any authorized Lexus retailer or Lexus auth orized repairer, or any reliable repairer.
●Ensure that only genuine Lexus wheels are used on your vehicle.
Tire pressure warning valves and transmitte rs may not work properly with non-genu-
ine wheels.

4346-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30F92E_(EE) Remove the air conditioning filter
from the filter case and replace it
with a new one.
The “
UP” marks shown on the filter
and the filter case should be pointing up.
■Changing interval
Inspect and replace the air conditioning filt er according to the maintenance schedule. In
dusty areas or areas with heavy traffic flow, early replacement may be required. (For
scheduled maintenance information, please refer to the “Lexus Service Booklet” or
“Lexus Warranty Booklet”.)
■If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
■Air conditioning filter with deodorizing function
When fragrances are placed in your vehicle, the deodorizing effect may become signifi-
cantly weakened in a short period.
When an air conditioning odor comes out cont inuously, replace the air conditioning filter.
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NOTICE
■When using the air conditioning system
When fragrances are placed in your vehicle, the deodorizing effect may become sig-
nificantly weakened in a short period.
When an air conditioning odor comes out continuously, replace the air conditioning fil-
ter.

4547-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
If your vehicle needs to be towed
The following may indicate a problem with your transmission. Contact any
authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer or
commercial towing service before towing. ● The hybrid warning message shows on the multi-information display and the
vehicle does not move.
● The vehicle makes an abnormal sound.
Do not tow with a sling-type truck to
prevent body damage.
If towing is necessary, we recommen d having your vehicle towed by any
authorized Lexus retailer or Lexus au thorized repairer, or any reliable
repairer or commercial towing service, using a wheel-lift type truck or flatbed
truck.
Use a safety chain system for all towing , and abide by all state/provincial and
local laws.
Situations when it is necessary to contact dealers before towing
Towing with a sling-type truck

5227-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
NOTICE
■When performing an emergency repair
●Perform the emergency repair without removing the nail or screw that has punctured
the tread of the tire. If the object that has punctured the tire is r emoved, repair by the
emergency tire puncture repair kit may not be possible.
●The repair kit is not waterproof. Make sure that the repair kit is not exposed to water,
such as when it is being used in the rain.
●Do not put the repair kit directly onto dusty ground such as sand at the side of the
road. If the repair kit vacuums up dust etc., a malfunction may occur.
■Handling the emergency tire puncture repair kit
●The repair kit power source should be 12 V DC suitable for vehicle use. Do not con-
nect the repair kit to any other source.
●If gasoline splatters on the repair kit, the repair kit may deteriorate. Take care not to
allow gasoline to contact it.
●Store the emergency tire puncture repair kit in the trunk.
The kit may be thrown around during sudden braking and so forth, damaging the kit.
●Store the repair kit in the trunk out of reach of children.
●Do not disassemble or modify the repair kit. Do not subject parts such as the air pres-
sure indicator to impacts. This may cause a malfunction.
■To avoid damage to the tire pressure warning valves and transmitters (vehicles with
the tire pressure warning system)
When a tire is repaired with liquid sealants, the tire pressure warning valve and trans-
mitter may not operate properly. If a liquid sealant is used, contact any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer or other qualified
service shop as soon as possible. After use of liquid sealant, make sure to replace the
tire pressure warning valve and transmitte r when repairing or replacing the tire.
(  P. 418)

594Alphabetical index
GS450h_300h_OM_OM30F92E_(EE) Refueling .................................................. 257
Capacity .................................................549
Fuel types ...............................................549
Opening the fuel tank cap ............ 259
When the fuel filler door cannot be opened ......................... 259
Regenerative braking ............................ 78
Remote Touch *
Replacing Electronic key battery......................435
Fuses ........................................................ 437
Light bulbs ............................................. 442
Tires ......................................................... 498
Rev indicator............................................ 106
Rev peak .................................................... 106
Road accident cautions.........................83
Seat belt reminder light ...................... 462
Seat belts .....................................................38
Adjusting the seat belt ........................ 39
Child restraint system installation.............................................. 67
Cleaning and maintaining
the seat belt .......................................395
Emergency Locking
Retractor (ELR).................................. 40
How to wear your seat belt ............. 38
How your child should wear the seat belt .......................................... 40
Pregnant women, proper seat belt use ........................................... 41
Reminder light and buzzer ........... 462
Seat belt pretensioners ...................... 39
SRS warning light.............................. 460 Seat heaters ............................................ 362
Seat position memory...........................178
Seat ventilators ...................................... 362
Seats............................................................. 175
Adjustment ............................................. 175
Adjustment precautions................... 176
Child seats/child restraint system installation ............................. 66
Cleaning ................................................ 394
Driving position memory ................ 178
Head restraints .....................................183
Power easy access system............. 178
Properly sitting in the seat................ 36
Seat heaters.......................................... 362
Seat position memory ....................... 178
Seat ventilators ................................... 362
Sensor Automatic headlight system ........ 240
Automatic High Beam system.................................................. 246
Inside rear view mirror .....................189
Intrusion sensor and tilt sensor.......94
Lexus parking assist-sensor *
LKA (Lane-Keeping Assist) ........ 282
Radar sensor .............................263, 318
Rain-sensing windshield
wipers .................................................. 255
Service plug ............................................... 80
Service reminder indicators ............... 98
S-FLOW mode ..................................... 347
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