2017 Lexus GS450h service

3865-5. Using the other interior features
GS450h_300h_OM_OM30F92E_(EE)
WARNING
■When the Emergency Call may not be made
●Any of the followings may occur. In such cases, report to the Public Safety Answering Point (PSAP) by other means such as nearby public phones.
• It may sometimes be difficult to connect to the Public Safety Answering Point (PSAP) even in the reception area of the cellular phone due to the reception level,or if the line is busy.
In such cases, you may not be able to connect to the Public Safety Answering Point (PSAP) and thus will not be able to make emergency calls and report to the emer- gency departments even though the system tries to connect to the Public Safety
Answering Point (PSAP). • When the vehicle is out of the cellular phone service area, the Emergency Callcannot be made.
• When any related equipment (such as th e “SOS” button panel, indicator lights, microphone, speaker, DCM, antenna, or any wires connecting the equipment.)has an abnormality, is damaged or brok en, the Emergency Call cannot be made.
• During the Emergency Call, the system makes repeated attempts to connect to the Public Safety Answering Point (PSAP). However, if it cannot connect to thePublic Safety Answering Point (PSAP) due to poor radio wave reception, the sys-
tem may not be able to connect to the cellular network and the call may finish with- out connecting. The red indicator light w ill blink for approximately 30 seconds to indicate this disconnection.
• This device may not function if a shock is applied to it.
●If the 12-volt battery’s voltage decreases or there is a disconnection, the system may
not be able to access the Public Safety Answering Point (PSAP).
■When replacing DCM to a new one
ERA-GLONASS have to be activated. Contact any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.

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6Maintenance and care
GS450h_300h_OM_OM30F92E_(EE)
6-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ................390
Cleaning and protecting
the vehicle interior.................. 394
6-2. Maintenance
Maintenance
requirements ............................ 397
6-3. Do-it-yourself maintenance
Do-it-yourself service
precautions................................ 399
Hood ................................................ 401
Positioning a floor jack ............ 402
Engine compartment ...............403
12-volt battery ...............................412
Tires ...................................................416
Tire inflation pressure .............. 429
Wheels ............................................ 431
Air conditioning filter ............... 433
Electronic key battery.............. 435
Checking and replacing
fuses.............................................. 437
Light bulbs..................................... 442

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6-2. Maintenance
Maintenance and care
GS450h_300h_OM_OM30F92E_(EE)
Maintenance requirements
Scheduled maintenance should be performed at specified intervals according to
the maintenance schedule.
For details about maintenance items and sche dules, refer to the “Lexus Service Book- let” or “Lexus Warranty Booklet”.
What about do-it-yourself maintenance?
Many of the maintenance items are easy to do yourself if you have a little mechanicalability and a few basic automotive tools.
Note, however, that some maintenance task s require special tools and skills. These
are best performed by qualified technicians. Even if you’re an experienced do-it-your- self mechanic, we recommend that repairs and maintenance be conducted by anyauthorized Lexus retailer or Lexus authoriz ed repairer, or any reliable repairer. Any
authorized Lexus retailer or repairer will keep a record of maintenance, which could be useful should you ever require Warranty Service. Should you choose to select aqualified and equipped professional other th an an authorized Lexus repairer to ser-
vice or maintain your vehicle, we recommend that you request that a record of main- tenance be kept.
■Where to go for maintenance service?
In order to maintain your vehicle in the best possible condition, Lexus recommends that maintenance service operations as well as ot her inspections and repairs be carried out
by authorized Lexus retailers or Lexus authoriz ed repairers, or any reliable repairers. For repairs and services covered by your warranty, please visit an authorized Lexus retailer or repairer, who will use genuine Lexus parts in repairing any difficulties you may
encounter. There can also be advantages in utilizing authorized Lexus retailers or repair- ers for non-warranty repairs and services, as members of the Lexus network will be able to expertly assist you with an y difficulties you may encounter.
Your Lexus retailer or Lexus authorized repair er, or any reliable repairer will perform all of the scheduled maintenance on your vehicl e reliably and economically due to their experience with Lexus vehicles.
To ensure safe and economical driving, day-to-day care and regular mainte-
nance are essential. Lexus recommends the following maintenance:
Scheduled maintenance
Do-it-yourself maintenance

3986-2. Maintenance
GS450h_300h_OM_OM30F92E_(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. 105)
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 12-volt battery
12-volt battery posts, terminals and related accessories contain lead and lead com- pounds which are known to cause brain damage. Wash your hands after handling.
( P. 412)

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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)
•Grease
• Conventional wrench (for terminal clamp bolts)
Engine/power
control unit coolant level ( P. 409)
•“Toyota 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. 406)
• “Toyota Genuine Motor Oil” or equivalent
•Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses (P. 437)• Fuse with same amperage rating as original
Light bulbs ( P. 442)
• Bulb with same number and wattage rating as original
• Phillips-head screwdriver• Flathead screwdriver
•Wrench
Radiator and condenser ( P. 411)
Tire inflation
pressure ( P. 429)• Tire pressure gauge• Compressed air source
Washer fluid
( P. 411)
• Water or washer fluid containing antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)

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 tiresthemselves, 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. Doingso 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.