2019 LEXUS LX570 radiator cap

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LX570_OM_OM60R07U_(U) 6-3. Do-it-yourself maintenance
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Maintenance and care
Engine compartment
Power steering fluid reservoir
(  P. 483)
Engine oil level dipstick
(  P. 477)
Engine coolant reservoir
(  P. 480)
Engine oil filler cap (  P. 478) Brake fluid reservoir (  P. 481)
Fuse box (  P. 507)
Washer fluid tank (  P. 487)
Battery (  P. 484)
Cooling fans
Condenser (  P. 481)
Radiator (  P. 481)1
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480
LX570_OM_OM60R07U_(U) 6-3. Do-it-yourself maintenance
The coolant level is satisfactory if it is between the “F” and “L” lines on the reser-
voir when the engine is cold.
Reservoir cap
“F” line
“L” line If the level is on or below the “L” line, add
coolant up to the “F” line. ■
Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high qua lity 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 % deion-
ized water. (Minimum temperature: -31  F [-35  C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55 % coolant and 45 % deion-
ized 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 c oolant reservoir cap, radiator cap, 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
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WARNING ■
When the engine is hot
Do not remove the radiator cap, or 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.

556 7-2. Steps to take in an emergency
LX570_OM_OM60R07U_(U) 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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5577-2. Steps to take in an emergency
LX570_OM_OM60R07U_(U) 7
When trouble arises 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.

626 Alphabetical index
LX570_OM_OM60R07U_(U) Power steering
Fluid.......................................................... 568
Power windows ........................................ 171
Jam protection function ..................... 171
Operation ................................................. 171
Window lock switch............................ 171
Radar cruise control (dynamic
radar cruise control with
full-speed range) ............................... 275
Radiator ..................................................... 481
Radio
* Rear air conditioning system .............416
Rear seat ................................................... 148
Adjustment ............................................. 148
Folding the third seats ........................ 151
Tumbling the second seats ............ 149
Rear side marker lights .......................227
Light switch ........................................... 227
Replacing light bulbs ......................... 510
Rear turn signal lights ......................... 223
Replacing light bulbs ......................... 510
Turn signal lever ................................. 223
Rear view mirror
Inside rear view mirror ..................... 166
Outside rear view mirrors .............. 168
Rear view monitor system
*Rear window defogger ......................... 411
Rear window wiper................................ 241
Refueling .................................................. 245
Capacity ................................................ 564
Fuel types .............................................. 564
Opening the fuel tank cap.............245 Remote touch/12.3-inch
display .................................................... 398
Replacing
Electronic key battery .................... 505
Fuses ........................................................ 507
Light bulbs.............................................. 510
Tires ..........................................................535
Reporting safety defects for
U.S. owners ......................................... 600
Resetting the message indicating
maintenance is required ................. 467
Safety Connect ......................................... 74
Scheduled maintenance ....................466
Seat belts .................................................... 30
Adjusting the seat belt........................ 33
Automatic Locking Retractor ........ 34
Child restraint system
installation ............................................... 61
Cleaning and maintaining the
seat belt ............................................... 464
Emergency locking retractor ......... 34
How to wear your seat belt............. 28
How your child should wear
the seat belt .......................................... 34
Pregnant women, proper seat
belt use ................................................... 35
Reminder light and buzzer ........... 525
Seat belt extender ................................ 34
Seat belt pretensioners...................... 33
SRS warning light .............................. 523R
S