cooling Lexus GS350 2013 User Guide

747
GS350_U (OM30C34U)
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.
Check to see if steam is coming out from under the hood.
If you see steam:
Stop the engine. Carefully lift the hood after the steam subsides and
then restart the engine.
If you do not see steam:
Leave the engine running and carefully lift the hood.
Check to see if the cooling fan is operating.
If the fan is operating:
Wait until the temperature of the engine (shown on the instrument
panel) begins to fall and then stop the engine.
If the fan is not operating:
Stop the engine immediately and call your Lexus dealer.
After the engine has cooled
down sufficiently, check the
engine coolant level and inspect
the radiator core (radiator) for
any leaks.
If the engine compartment cover
needs to be removed: →P. 6 1 6
Add engine coolant if necessary.
Water can be used in an emergency if
engine coolant is unavailable.
(→ P. 7 5 6 )
Have the vehicle inspected at the nearest Lexus dealer as soon as possi-
ble.
1
2
3
4
5

7487-2. Steps to take in an emergency
GS350_U (OM30C34U)
■Overheating
If you observe the following, your vehicle may be overheating:
●The engine coolant temperature gauge enters the red zone or a loss of power is
experienced.
●Steam comes out from under the hood.
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 away from the fans, etc. while the engine is operating.
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 commercially available coolant additives.
●Do not loosen the radiator cap while the
engine and radiator are hot.
High temperature steam or coolant could
spray out.

756
GS350_U (OM30C34U)
8-1. Specifications
Cooling system
Capacity10.3 qt. (9.7 L, 8.5 Imp.qt.)
Coolant type
Use 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 tech-
nology
Do not use plain water alone.
Ignition system
Spark plug
MakeDENSO FK20HBR11
Gap0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

812Alphabetical index
GS350_U (OM30C34U)
Care ............................................... 594, 598Aluminum wheels ............................. 595
Exterior................................................... 594
Interior .................................................... 598
Seat belts ............................................... 599
Cargo capacity....................................... 168
Cargo hooks ..........................................558
CD player ..................................................412
Chains .......................................................300
Child restraint system............................ 53 Booster seats, definition ....................53
Booster seats, installation.................. 63
Convertible seats, definition ............53
Convertible seats, installation .........60
Front passenger occupant
classification system ......................... 47
Infant seats, definition ..........................53
Infant seats, installation .......................60
Installing CRS
with LATCH anchors .................... 58
Installing CRS with seat belts ..........60
Installing CRS with top tether strap .........................64 Child safety .................................................52
Airbag precautions.............................. 39
Battery precautions .............. 626, 746
Child restraint system......................... 53
How your child should wear the seat belt ................................... 31, 32
Installing child restraints .................... 57
Moon roof precautions ..................... 151
Power window lock switch.............145
Power window precautions ........... 147
Rear door child-protectors ............. 118
Removed electronic key battery precautions .............. 647
Seat belt comfort guide ....................... 31
Seat belt extender precautions .......................................... 35
Seat belt precautions .......................... 56
Seat heater precautions .................570
Trunk precautions ............................... 124
Child-protectors ..................................... 118
Cleaning .......................................594, 598 Aluminum wheels ..............................595
Exterior ...................................................594
Interior .................................................... 598
Seat belts................................................599
Clock......................................................... 562
Coat hooks ..............................................576
Condenser...............................................622
Console box........................................... 554
Console box light ................................. 554
Cooling system Engine overheating ...........................747
Cruise control Cruise control .....................................209
Dynamic radar crui se control ....... 213
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