2013 Lexus GS350 engine coolant

620
GS350_U (OM30C34U)
6-3. Do-it-yourself maintenance
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL” line.
(→ P. 74 7 )
■Coolant selection
Only use “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.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deionized
water. (Minimum temperature: -31 °F [-35 °C])
Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deionized
water. (Minimum temperature: -44 °F [-42 °C])
For more details about engine coolant, contact your Lexus dealer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, drain cock and
water pump.
If you cannot find a leak, have your Lexus dealer test the cap and check for leaks in
the cooling system.
Engine coolant
1
2
3

GS350_U (OM30C34U)
6216-3. Do-it-yourself maintenance
6
Maintenance and care
CAUTION
■When the engine is hot
Do not remove the engine coolant reservoir cap or the radiator cap.(→P. 74 8 )
The cooling system may be under pressure and may spray hot coolant if the cap is
removed, causing serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of water
and antifreeze must be used to provide proper lubrication, corrosion protection
and cooling. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.

684
GS350_U (OM30C34U)
7-2. Steps to take in an emergency
If you think something is wrong
●Fluid leaks under the vehicle.
(Water dripping from the air conditioning after use is normal.)
●Flat-looking tires or uneven tire wear
●Engine coolant temperature gauge needle continually points higher
than normal.
●Changes in exhaust sound
●Excessive tire squeal when cornering
●Strange noises related to the suspension system
●Pinging or other noises related to the engine
●Engine missing, stumbling or running roughly
●Appreciable loss of power
●Vehicle pulls heavily to one side when braking
●Vehicle pulls heavily to one side when driving on a level road
●Loss of brake effectiveness, spongy feeling, pedal almost touches the
floor
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact your Lexus dealer as soon as pos-
sible.
Visible symptoms
Audible symptoms
Operational symptoms

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.

772
GS350_U (OM30C34U)
8-1. Specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sureTire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic transmis-
sion, power steering, power brakes, power windows,
power seats, radio and heater, to the extent that these
items are available as factory-installed equipment
(whether installed or not)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipped, air conditioning and
additional weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the number of occupants speci-
fied in the second column of Table 1
* that follows
Occupant distributionDistribution of occupants in a vehicle as specified in
the third column of Table 1
* below
Production options weight
The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they replace, not previously
considered in curb weight or accessory weight,
including heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and special trim
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated

814Alphabetical index
GS350_U (OM30C34U)
Emergency, in case ofIf the electronic key
does not operate properly ........740
If the engine will not start................ 735
If the parking brake cannot be released........................738
If the shift lever cannot be shifted from P ............ 737
If the vehicle battery is discharged ......................................... 743
If the warning buzzer sounds................................................. 686
If the warning light turns on.......... 686
If the warning message is displayed ........................................697
If you have a flat tire .......................... 722
If you think something is wrong.............................................. 684
If your vehicle becomes stuck ...................................................... 749
If your vehicle needs to be towed ...................................... 678
If your vehicle overheats ................ 747
Emergency flashers ............................. 676
Engine Accessory mode.................................. 172
Compartment ....................................... 615
Engine switch .......................................... 171
Hood ......................................................... 612
How to start the engine ..................... 171
Identification number .......................753
If the engine will not start................ 735
Ignition switch (engine switch) ................................... 171
Overheating ......................................... 747 Engine compartment cover............... 616
Engine coolant ...................................... 620
Capacity ................................................. 756
Checking ............................................... 620
Preparing and checking before winter ....................................298
Engine coolant temperature gauge ......................................................... 79
Engine immobilizer system ................. 68
Engine oil ................................................... 617 Capacity ................................................. 754
Checking ................................................. 617
Oil level warning message ........... 706
Oil pressure warning message.......................... 698
Preparing and checking
before winter ....................................298
Engine oil maintenance data ........... 602
Engine switch............................................. 171
Enhanced VSC ..................................... 268
EPS (Electronic Power Steering) .........269
Function .................................................. 269
Warning light ....................................... 687
Warning message............................. 702
Event data recorder (EDR)................... 10