cooling LEXUS LX570 2018 User Guide

5537-2. Steps to take in an emergency
LX570_OM_OM60Q78U_(U) 7
When trouble arises The coolant level is satisfactory if it is between the “F” and “L” lines on the res-
ervoir.
Reservoir
“F” line
“L” line
Radiator 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 air
conditioning condenser cooling fans op erate 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
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554 7-2. Steps to take in an emergency
LX570_OM_OM60Q78U_(U) WARNING ■
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 h ood, 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 seri-
ous injury. ●
Do not loosen the radiator cap or the cool ant reservoir cap while the engine and radi-
ator are hot. High temperature steam or coolant could spray out.
NOTICE ■
When adding engine coolant
Add coolant slowly after the engine has cool ed 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 foreig n matter (such as sand or dust etc.).●
Do not use any coolant additive.

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LX570_OM_OM60Q78U_(U) 8-1. Specifications
Cooling system Capacity (Reference) 17.1 qt. (16.2 L, 14.3 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 technology
Do not use plain water alone.
Ignition system 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.
Electrical system Battery
Open voltage at 68 ° F
(20 ° C): 12.6 ⎯ 12.8 V Fully charged
12.2 ⎯ 12.4 V Half charged
11.8 ⎯ 12.0 V Discharged
(Voltage is checked 20 minutes after the engine
and all lights are turned off.)
Charging rates 5 A max.

615Alphabetical index
LX570_OM_OM60Q78U_(U) Coolant..................................................... 562
Capacity .................................................562
Checking................................................478
Preparing and checking
before winter ................................... 382
Cooling system
Engine overheating.......................... 552
Crawl Control ....................................... 307
Cruise control
Cruise control....................................... 281
Dynamic radar cruise control
with full-speed range ....................269
Cup holders ............................................ 423
Curtain shield airbags ........................... 38
Customizable features .......................580
Daytime running light system .......... 222
Defogger
Outside rear view mirrors ............ 405
Rear window ....................................... 405
Windshield ........................................... 405
Differential ............................................... 563
Dimension ...............................................558
Dinghy towing........................................ 204 Display
Crawl Control..................................... 307
Drive information.................................. 94
Dynamic radar cruise control
with full-speed range ................... 269
Fuel consumption information ..... 106
Head-up display ................................. 100
Intuitive parking assist......................288
LDA (Lane Departure Alert)....... 264
Multi-information display.................... 91
Multi-terrain Monitor .........................316
Multi-terrain Select ............................. 312
Warning messages ..........................528
Do-it-yourself maintenance..............470
Door courtesy lights
Location ................................................... 417
Doors
Automatic door locking and
unlocking system............................... 119
Back door................................................ 122
Door glasses ..........................................165
Door lock.................................................. 115
Open door warning buzzer ........ 522
Open door warning light .............. 522
Outside rear view mirrors .............. 162
Rear door child-protectors ............. 118
Side doors ................................................ 115D
* : Refer to
the “NAVIGATION SYSTEM OWNER’S MANUAL”.