engine coolant Lexus GX460 2013 Specifications /

625
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_OM_OM60J63U_(U)
■If the coolant level drops within a short time after 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.
CAUTION
■When the engine is hot
Do not remove the radiator cap.
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 the 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 damage to parts or paint.

5
When trouble arises
691
5-1. Essential information
GX460_OM_OM60J63U_(U)
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
■Visible symptoms
●Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temper ature gauge needle continually points
higher than normal
■ Audible symptoms
●Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
■ Operational symptoms
●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, sp ongy feeling, pedal almost touches
the floor

5
When trouble arises
749
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
If your vehicle overheats
If the engine overheats:
Stop the vehicle in a safe place and turn off the automatic 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 sub-
sides 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 engine coolant temperature gauge begins to
fall and then stop the engine.
If the fan is not operating: Stop the engine and call your local Lexus dealer.STEP1
STEP2
STEP3

750
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
After the engine has cooled
down sufficiently, check the
coolant level and inspect the
radiator core (radiator) for any
leaks.
If the engine compartment
cover needs to be removed.
(P. 6 1 9 )
Add engine coolant if required.
Water can be used as an emer-
gency measure if engine coolant
is unavailable. ( P. 76 3 )
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
STEP4
STEP5

5
When trouble arises
751
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
■Overheating
In the following situations, your vehicle may be overheating:
●The engine coolant temperature gauge enters the red zone or a loss of power is
experienced.
●Steam is coming from under the hood.
CAUTION
■To prevent an accident or injury when in specting under the hood of your vehicle
●If steam is seen coming from under the hood, do not open the hood until the
steam has subsided. The engine compartm ent may be very hot, causing serious
injury such as burns.
●Keep hands and clothing away from the fan and engine drive belt while the
engine is running.
●Do not loosen the radiator cap while the engine and radiator are hot.
Serious injury, such as burns, may resu lt from hot coolant and steam released
under pressure.
NOTICE
■When adding engine coolant
Wait until the engine has cooled down before adding coolant.
When adding coolant, do so slowly. Adding cold coolant to a hot engine too quickly
can cause damage to the engine.

780
6-1. Specifications
GX460_OM_OM60J63U_(U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressureTire 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 trans-
mission, power steering, power brakes, power win-
dows, 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

829
Alphabetical index
GX460_OM_OM60J63U_(U)
Electronic keyIf the electronic key does not operate properly .............................744
Emergency, in case of If the electronic key does not operate properly .............................744
If the engine will not start ............... 740
If the shift lever cannot be shifted from P .................................... 742
If the vehicle has discharged battery.................................................. 746
If the warning buzzer sounds...... 693
If the warning light turns on .......... 693
If the warning message is displayed ............................................ 705
If you have a flat tire .........................726
If you lose your keys .........................743
If you think something is wrong.....................................................691
If your vehicle becomes stuck .....752
If your vehicle has to be stopped in an emergency ......... 754
If your vehicle needs to be towed ...................................................685
If your vehicle overheats................ 749
Emergency flashers Switch ...................................................... 684 Engine
Accessory mode................................. 183
Compartment....................................... 618
Engine switch ........................................ 183
Hood ..........................................................617
How to start the engine ................... 183
Identification number .......................759
If the engine will not start................740
Ignition switch ....................................... 183
Overheating ......................................... 749
Engine compartment cover .............. 619
Engine coolant Capacity ................................................. 763
Checking ...............................................624
Preparing and checking before winter ......................................371
Engine coolant temperature gauge....................................................... 199
Engine immobilizer system.................. 119
Engine oil Capacity ...................................................761
Checking .............................................. 620
Preparing and checking before winter ......................................371
Engine switch .......................................... 183
Engine switch light................................525
Event data recorder (EDR) ................. 23E
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.

838
GX460_OM_OM60J63U_(U)
What to do if...
What to do if...
A tire puncturesP. 7 2 6If you have a flat tire
The engine does not start
P. 1 1 9Engine immobilizer system
P. 74 0If the engine will not start
P. 74 6If the vehicle battery is discharged
The shift lever cannot be
moved outP. 74 2If the shift lever cannot be shifted
from “P”
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 74 9If your vehicle overheats
The key is lostP. 74 3If you lose your keys
The battery is dischargedP. 74 6If the vehicle battery is discharged
The doors cannot be lockedP. 5 2Side doors
P. 5 7Back door
The horn begins to soundP. 1 2 1Alarm
The vehicle is stuck in mud or
sandP. 7 5 2If the vehicle becomes stuck