cooling Lexus GS350 2015 User Guide

432
GS350_OM_OM30F69U_(U)
6-3. Do-it-yourself maintenance
■Engine compartment (type B fuse box)
33FA N N O. 240Electric cooling fans
34A/C COMP7. 5Air conditioning system
35FILTER10Condenser
FuseAmpereCircuit
FuseAmpereCircuit
1IGN10Starting system
2INJ10Multiport fuel injection system/sequential
multiport fuel injection system
3EFI NO.210Fuel system, exhaust system
4IG2 MAIN20IGN, GAUGE, INJ, AIR BAG, IG2 NO.1,
LH-IG2
5EFI MAIN25Multiport fuel injection system/sequential
multiport fuel injection system, EFI NO.2
6A/F15Air intake system
7EDU20Multiport fuel injection system/sequential
multiport fuel injection system
8F/ P M P25Multiport fuel injection system/sequential
multiport fuel injection system
9SPARE30Spare fuse
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5267-2. Steps to take in an emergency
GS350_OM_OM30F69U_(U)
CAUTION
■Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while related
parts contain lead and lead compounds. Observe the following precautions when
handling the battery:
●When working with the battery, always wear safety glasses and take care not to
allow any battery fluids (acid) to come into contact with skin, clothing or the vehi-
cle body.
●Do not lean over the battery.
●In the event that battery fluid comes into contact with the skin or eyes, immedi-
ately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention can be
received.
●Always wash your hands after handling the battery support, terminals, and other
battery-related parts.
●Do not allow children near the battery.
NOTICE
■When handling jumper cables
When connecting the jumper cables, ensure that they do not become entangled in
the cooling fans or engine drive belt.
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527
GS350_OM_OM30F69U_(U)
7
When trouble arises
7-2. Steps to take in an emergency
If your vehicle overheats
Stop the vehicle in a safe place and turn off the air conditioning system,
and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down sufficiently, inspect the hoses and
radiator core (radiator) for any leaks. Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Lexus
dealer.
The following may indicate that your vehicle is overheating.
●The needle of the engine coolant temperature gauge ( →P. 81) enters
the red zone or a loss of engine power is experienced. (For example,
the vehicle speed does not increase.)
●Steam is coming from under the hood.
Correction procedures
1
2
3
1
2
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5287-2. Steps to take in an emergency
GS350_OM_OM30F69U_(U)The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir.
Reservoir
“FULL”
“LOW”
Coolant inlet cap
Add coolant if necessary.
Water can be used in an emergency if
coolant is unavailable.
Start the engine 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 engine immediately an d contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
4
1
2
3
4
5
6
7
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5297-2. Steps to take in an emergency
GS350_OM_OM30F69U_(U)
7
When trouble arises
CAUTION
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
●If steam is seen coming from under the hood, do not open the hood until the
steam has subsided. The engine compartment may be very hot.
●Keep hands and clothing (especially a tie, a scarf or a muffler) away from the fans
and belts. Failure to do so may cause the hands or clothing to be caught, resulting
in serious injury.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has cooled down sufficiently. Adding cool
coolant to a hot engine too quickly can cause damage to the engine.
■To prevent damage to the cooling system
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or dust etc.).
●Do not use any coolant additives.
●Do not loosen the coolant inlet cap or the
coolant reservoir cap while the engine and
radiator are hot.
High temperature steam or coolant could
spray out.
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538
GS350_OM_OM30F69U_(U)
8-1. Specifications
Cooling system
Capacity 10.3 qt. (9.7 L, 8.5 Imp.qt.)
Coolant typeUse either of the following:• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-silicate,non-amine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology
Do not use plain water alone.
Ignition system
Spark plug
Make
GapDENSO FK20HBR11
0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
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596Alphabetical index
GS350_OM_OM30F69U_(U)
Care ................................................ 374, 378Aluminum wheels ..............................375
Exterior.................................................... 374
Interior .....................................................378
Seat belts ................................................379
Cargo capacity........................................ 174
Cargo hooks .......................................... 337
CD player
*
Chains ....................................................... 285
Child restraint system............................ 55 Booster seats, definition ....................55
Booster seats, installation..................65
Convertible seats, definition ............55
Convertible seats, installation ......... 62
Front passenger occupant
classification system ......................... 47
Infant seats, definition ..........................55
Infant seats, installation ....................... 62
Installing CRS
with LATCH anchors .....................60
Installing CRS with seat belts .......... 62
Installing CRS with top tether strap .........................66
Child safety ................................................ 54 Airbag precautions .............................. 39
Battery precautions ............. 405, 526
Child restraint system .........................55
How your child should wear the seat belt ................................... 31, 32
Installing child restraints.....................59
Moon roof precautions.................... 158
Power window lock switch .............. 151 Power window precautions ...........154
Rear door child-protectors ............ 124
Removed electronic
key battery precautions .............. 426
Seat belt comfort guide ....................... 31
Seat belt extender precautions .......................................... 35
Seat belt precautions ..........................58
Seat heater precautions ................. 349
Trunk precautions .............................. 130
Child-protectors .................................... 124
Cleaning ....................................... 374, 378 Aluminum wheels .............................. 375
Exterior ................................................... 374
Interior ..................................................... 378
Seat belts................................................ 379
Clock........................................................... 341
Coat hooks ............................................. 356
Condenser.............................................. 402
Console box........................................... 333
Console box light ................................. 333
Cooling system Engine overheating .......................... 527
Cruise control
Cruise control ....................................... 214
Dynamic radar crui se control .......218
Cup holders............................................ 334
Curtain shield airbags ............................ 37
Customizable features ...................... 559
C
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