engine coolant LEXUS LX570 2015 User Guide

7584-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) Radiator and condenser
Check the radiator and condenser, and clear any foreign objects.
If any of the above parts are extremely dirty or you are not sure of their
condition, have your vehicle checked by your Lexus dealer. CAUTION■
When the engine is hot
Do not remove the coolant reservoir 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 engine coolant
Coolant is neither plain wate r nor straight antifreeze. Th e 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 damage to parts or paint.
CAUTION■
When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause serious inju-
ries, such as burns.

8245-1. Essential information
LX570_OM_OM60L96U_(U) If you think something is wrong If you notice any of the following sy mptoms, 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 temperature gaug e needle continually points
higher than normal
● Engine oil pressure gauge continually points lower than normal.
● Voltmeter continually points higher or lower 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 rough
● 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

5
When trouble arises
8795-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) If your vehicle overheats
Correction procedures
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. 192)
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. STEP 1
STEP 2
STEP 3

8805-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.
Reservoir
“F”
“L”
Radiator cap
Add coolant if necessary. Water can be used in an emer-
gency if coolant is unavailable.
Start the engine and tu rn the air conditioning system on to check
that the radiator cool ing fans operate and to check for coolant
leaks from the radiator or hoses. The fans operate when the air conditioning system is turned on immedi-
ately 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 con-
ditioning system on and off repeatedly. (The fans may not operate in
freezing temperatures.)
If the fans are not operating:
Stop the engine immediately and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer. STEP 4
STEP 5
STEP 6
STEP 7

5
When trouble arises
8815-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) CAUTION■
To prevent an accident or injury when inspecting 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 engi ne compartment may be very hot, causing serious
injury such as burns. ●
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. ●
Do not loosen the radiator cap or the coolant reservoir cap while the engine and
radiator are hot.
Serious injury, such as bu rns, may result from hot coolant and steam released
under pressure.
NOTICE■
When adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. 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 foreig n matter (such as sand or dust etc.).●
Do not use any coolant additive.

8916-1. Specifications
6
Vehicle specifications
LX570_OM_OM60L96U_(U) Cooling system
Ignition system Capacity (Reference) 17.6 qt. (16.7 L, 14.7 Imp.qt.)
Coolant type Use either of the following.
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-sili-
cate, non-amine, non-nitrite, and non-borate cool-
ant with long-life hybrid organic acid technology
Do not use plain water alone.
Spark plug
Make
Gap DENSO SK20HR11
0.043 in. (1.1 mm)
NOTICE■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine.

9066-1. Specifications
LX570_OM_OM60L96U_(U) Warning: The temperature grades of a tire assume that it is properly inflated
and not overloaded.
Excessive speed, underinflation, or exce ssive loading, either separately or
in combination, can cause heat bu ildup and possible tire failure.
Glossary of tire terminology Tire related term Meaning
Cold tire inflation
pressure Tire pressure when the vehicle has been parked for
three hours or more, or ha s not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sure The maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressure Cold tire inflation pressure recommended by a manu-
facturer
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 f actory-installed equipment
(whether installed or not)
Curb weight The weight of a motor vehi cle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipped, air conditioning and addi-
tional 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 weight 150 lb. (68 kg) times the nu mber of occupants speci-
fied in the second column of Table 1
* that follows
Occupant distribution Distribution of occupants in a vehicle as specified in
the third column of Table 1
* below

945Alphabetical index
LX570_OM_OM60L96U_(U) If the warning light turns on .......... 826
If the warning message is
displayed ............................................ 837
If you have a flat tire ........................ 854
If you lose your keys .......................... 871
If you think something is
wrong................................................... 824
If your vehicle becomes
stuck ...................................................... 881
If your vehicle has to be
stopped in an emergency .........883
If your vehicle needs to be
towed ..................................................... 817
If your vehicle overheats................ 878
Engine
Compartment ....................................... 751
Engine switch .........................................177
Hood ....................................................... 750
How to start the
engine .....................................................177
Identification number....................... 887
If the engine will not start .............. 868
Ignition switch.........................................177
Overheating......................................... 878
Engine coolant
Capacity...................................................891
Checking ................................................757
Preparing and checking
before winter .................................... 376
Engine coolant temperature
gauge ....................................................... 192
Engine immobilizer system ................. 119 Engine oil
Capacity ................................................ 889
Checking ...............................................753
Preparing and checking
before winter .................................... 376
Engine switch ........................................... 177
Event data recorder ............................... 25
First-aid kit holder................................... 717
Floor mats ..................................................714
Fluid
Brake ....................................................... 894
Power steering ................................... 894
Washer ...................................................765
Fog lights
Replacing light bulbs .........................810
Switch.......................................................220
Wattage ................................................. 896
Four-wheel drive system ................... 332
Front passenger occupant
classification system .......................... 140
Front passenger’s seat belt
reminder light......................................829
Front seats
Adjustment ............................................... 67
Driving position memory ..................83
Front turn signal lights
Replacing light bulbs ....................... 807
Wattage ................................................. 896F

952
LX570_OM_OM60L96U_(U) What to do if...
What to do if... A tire punctures P. 854
If you have a flat tire
The engine does not start P. 868
If the engine will not start P. 119
Engine immobilizer system P. 875
If the battery is discharged
The shift lever cannot be
moved out P. 870
If 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. 878
If your vehicle overheats
The key is lost P. 871
If you lose your keys
The battery runs out P. 875
If the battery is discharged
The doors cannot be locked P. 52
Side doors P. 56
Back door
The horn begins to sound P. 121
Alarm
The vehicle is stuck in mud or
sand P. 881
If the vehicle becomes stuck