Heat Lexus GS300h 2015 Service Manual

467
7When trouble arises
GS450h_300h_OM_OM30F00E_(EE)
7-1. Essential informationEmergency flashers...................468
If your vehicle has to be stopped in an
emergency ................................. 469 7-2. Steps to take in an emergency
If your vehicle needs to be towed................................ 470
If you think something is wrong........................................475
If a warning light turns on or a warning buzzer
sounds........................................... 476
If a warning message is displayed ................................ 482
If you have a flat tire (vehicles with spare tire)............................517
If you have a flat tire (vehicles without spare tire)................... 528
If the hybrid system will not start ............................... 543
If the shift lever cannot be shifted from P............................ 545
If the parking brake cannot be released................. 546
If the electronic key does not operate properly .....................548
If the 12-volt battery is discharged .................................. 551
If your vehicle overheats ......... 556
If the vehicle becomes stuck ............................................. 563

4917-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F00E_(EE)
Indicates that the parking brake system is overheatingA buzzer also sounds.
→ Do not use the parking brake until the message dis-
appears.
Indicates an engine malfunction
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates an engine malfunction
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Wa r n i n g m e s s a g eDetails/Actions

5027-2. Steps to take in an emergency
GS450h_300h_OM_OM30F00E_(EE)
Indicates a malfunction in the drive start control system
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates a malfunction in the brake override system
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that engine oil level is low
This message may appear if the vehicle is stopped on a
slope. Move the vehicle to a level surface and check to
see if the message disappears.
A buzzer also sounds.
→ Check the level of engine oil, and add if necessary.
Indicates that the hybrid system has overheated
This message may be displayed when driving under
severe operating conditions. (For example, when driv-
ing up a long steep hill.)
A buzzer also sounds.
→ Stop and check. ( →P. 5 5 6 )
Wa r n i n g m e s s a g eDetails/Actions

5077-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F00E_(EE)
(If equipped)
Indicates that the PCS (Pre-Crash Safety system) is tem-
porarily unavailableA buzzer also sounds.
→ When conditions improve, the system resumes
operation. If this item is displayed continuously, have
the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Air conditioning, heater and other operations are tem-
porarily limited due to high power consumption
→ Turn off unnecessary electronic equipment to
reduce power consumption.
Please wait until the power supply returns to nor-
mal.
If this item is frequently displayed, have the vehicle
inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped
professional.
(If equipped)
Indicates that part of the PCS (Pre-Crash Safety system)
sensor is dirty, covered with ice, etc.
A buzzer also sounds.
→ Remove any dirt, ice, etc.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)
(Flashes)
(Flashes)

5417-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F00E_(EE)
WA R N I N G
■When fixing the flat tire
●Stop your vehicle in a safe and flat area.
●Do not touch the wheels or the area around the brakes immediately after the vehicle
has been driven.
After the vehicle has been driven, the wheels and the area around the brakes may be
extremely hot. Touching these areas with hands, feet or other body parts may result in
burns.
●Connect the valve and hose securely with the tire installed on the vehicle.
●If the hose is not properly connected to the valve, air leakage may occur or sealant
may be sprayed out.
●If the hose comes off the valve while inflating the tire, there is a risk that the hose will
move abruptly due to air pressure.
●After inflation of the tire has completed, the sealant may splatter when the hose is dis-
connected or some air is let out of the tire.
●Follow the operation procedure to repair the tire. If the procedures not followed, the
sealant may spray out.
●Keep back from the tire while it is being re paired, as there is a chance of it bursting
while the repair operation is being performe d. If you notice any cracks or deforma-
tion of the tire, turn off the compressor sw itch and stop the repair operation immedi-
ately.
●The repair kit may overheat if operated for a long period of time. Do not operate the
repair kit continuously for more than 35 minutes.
●Parts of the repair kit become hot during op eration. Be careful handling the repair kit
during and after operation. Do not touch the metal part connecting the bottle and the
compressor. It will be extremely hot.
●Do not attach the vehicle speed warning sticker to an area other than the one indi-
cated. If the sticker is attached to an area where an SRS airbag is located, such as the
pad of the steering wheel, it may prevent the SRS air bag from operating properly.
■Driving to spread the liquid sealant evenly
●Drive the vehicle carefully at a low speed. Be especially careful when turning and cor-
nering.
●If the vehicle does not drive straight or you feel a pull through the steering wheel, stop
the vehicle and check the following:
• Tire condition. The tire may have separated from the wheel.
• Tire inflation pressure. If tire infl ation pressure is 130 kPa (1.3 kgf/cm
2 or bar, 19 psi)
or less, the tire may be severely damaged.

5567-2. Steps to take in an emergency
GS450h_300h_OM_OM30F00E_(EE)
If your vehicle overheats
●The needle of the engine coolant temperature gauge ( →P. 104) enters the
red zone or a loss of hybrid system power is experienced. (For example, the
vehicle speed does not increase.)
●“Engine Coolant Temp High Stop in a Safe Place See Owner’s Manual” or
“Hybrid System Overheated Reduced Output Power” ( →P. 482) is shown on
the multi-information display.
●Steam comes out from under the hood.
■If the needle of the engine coolant temperature gauge enters the red zone
or “Engine Coolant Temp High Stop in a Safe Place See Owner’s Manual” is
shown on the multi-information display
Stop the vehicle in a safe place and turn off the air conditioning system, and
then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has cooled down sufficiently, inspect the hoses and
cooling system for leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact any autho-
rized Lexus dealer or repairer, or
another duly qualified and
equipped professional.
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

5587-2. Steps to take in an emergency
GS450h_300h_OM_OM30F00E_(EE)
Start the hybrid system and turn the air conditioning system on to check
that the radiator cooling fans operate and to check for coolant leaks from
the radiator or hoses.
The fans operate when the air conditioning system is turned on immediately after a
cold start. Confirm that the fans are operating by checking the fan sound and air
flow. If it is difficult to check these, turn the air conditioning system on and off
repeatedly. (The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the hybrid system immediately and contact any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
If the fans are operating:
Have the vehicle inspected at the nearest any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
■If “Hybrid System Overheated Reduced Output Power” is shown on the
multi-information displayStop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has cooled down, inspect the hoses and radiator
core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact any autho-
rized Lexus dealer or repairer, or
another duly qualified and
equipped professional.
6
7
1
2
3
1
2

591
8
8-2. Customization
Vehicle specifications
GS450h_300h_OM_OM30F00E_(EE)
■Automatic air conditioning system (
→P. 366)
■Front seat heaters (without seat ventilators)* (→ P. 383)
*: If equipped
FunctionDefault
settingCustomized setting
Switching between outside air
and recirculated air mode
linked to “AUTO” switch
* oper-
ationOnOffO—O
A/C Auto switch operationOnOffO—O
Exhaust gas sensor sensitivityStandard-3 to 3O—O
*: This is the switch for turning on and off the auto-
matic mode of the air conditioning system, not
the outside air or recirculated mode switch.
123
FunctionDefaultsettingCustomized setting
Automatic operation of front
seat heaterOffOn——O
123

5928-2. Customization
GS450h_300h_OM_OM30F00E_(EE)
■Front seat heaters and ventilators*1/rear seat heaters*2 ( → P. 3 8 2 )
*1: If both are equipped
*2:If equipped
FunctionDefault
settingCustomized setting
Adjustment of the front seat
heater temperature or the ven-
tilator fan speed during auto-
matic operation (individual seat
adjustment available)
Level 3
(standard)Level 1 (low) to level 5 (high)O—O
Adjustment of the rear seat
heater temperature during
automatic operation (individual
seat adjustment available)Level 3
(standard)Level 1 (low) to level 5 (high)O—O
Rear seat heater start-up con-
ditions when the power switch
is in ON mode (individual seat
adjustment available)
OffOn (AUTO)O—O
123

604Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
Cargo hooks........................................... 394
CD player
*
Chains .......................................................355
Child restraint system ............................ 56Baby seats, definition .......................... 57
Baby seats, installation ....................... 66
Child seats, definition.......................... 57
Child seats, installation....................... 66
Installing CRS with ISOFIX rigid anchors........................................ 69
Installing CRS with seat belts.......... 66
Installing CRS with top strap .......... 70
Junior seats, definition ........................ 57
Junior seats, installation .....................68
Child safety................................................. 55 12-volt battery
precautions........................... 430, 555
Airbag precautions .............................. 45
Child restraint system......................... 56
How your child should
wear the seat belt ..................... 39, 40
Installing child restraints .................... 65
Moon roof precautions ................... 198
Power window lock switch.............193
Power window precautions .......... 195
Rear door child-protectors ............143
Removed electronic key battery precautions ....................... 452
Seat belt comfort guide ..................... 39
Seat belt precautions .......................... 42
Seat heater precautions .................. 381
Trunk precautions ..............................149
Child-protectors ................................... 143 Cleaning.........................................406, 410
Aluminum wheels.............................. 407
Exterior ................................................... 406
Interior.......................................................410
Seat belts ................................................... 411
Clock ...............................................105, 398
Coat hooks.............................................. 402
Condenser ..............................................427
Console box ........................................... 390
Console box light ...................................391
Coolant..................................................... 425 Capacity..................................................572
Checking ............................................... 425
Preparing and checking
before winter.................................... 354
Cooling system ..................................... 425
Engine overheating .......................... 556
Hybrid system overheating.......... 556
Consumption screen ........................... 126
Cruise control Cruise control ......................................327
Dynamic radar cruise control ....... 315
Dynamic radar cruise control with full-speed range ................... 303
Cup holders ..............................................391
Curtain shield airbags .......................... 43
Customizable features........................ 581