cooling LEXUS RX350 2015 User Guide

5
When trouble arises
7995-2. Steps to take in an emergency
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 coolant level is satisfactory if it
is between the “FULL” and “LOW”
lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
Radiator capThe following may indicate that your vehicle is overheating.
● “ENGINE OVERHEAT” is shown on the multi-information display.
● Steam comes out from under the hood. STEP 1
STEP 2
STEP 3
STEP 4

8005-2. Steps to take in an emergency
Add coolant if necessary.
(
 P. 6 7 1 )
Water can be used in an emer-
gency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check
that the radiator cooling fans op erate and to check for coolant
leaks from the radiator or hoses. The fans operate when the air conditio ning 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 diff icult 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 5
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
injuries 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 while the engine and radiator are hot.
Serious injury, such as burns, may resu lt from hot coolant and steam released
under pressure.STEP 6
STEP 7

5
When trouble arises
8015-2. Steps to take in an emergency
NOTICE■
When adding engine coolant
Wait until the engine has cooled do wn 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 additives.

8116-1. Specifications
6
Vehicle specifications Cooling system
Ignition system Capacity Without towing pack-
age 9.1 qt. (8.6 L, 7.6 Imp. qt.)
With towing package 10.0 qt. (9.5 L, 8.4 Imp. qt.)
Coolant type Use either of the following.
• “Toyota Super Long Life Coolant”
• A 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.
Spark plug
Make
Gap DENSO FK20HR11
0.043 in. (1.1 mm)
NOTICE■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

872Alphabetical index
Card key ......................................................30
Care
Exterior .................................................. 650
Interior .....................................................653
Seat belts................................................654
Cargo capacity ....................................... 301
Cargo hooks ........................................... 627
CD changer
CD ................................................383, 492
MP3 .............................................. 384, 501
WMA disc.................................. 384, 501
CD player .................................... 383, 492
Chains .......................................................302
Child restraint system
Booster seats, definition ................... 137
Booster seats, installation ..................141
Convertible seats, definition .......... 137
Convertible seats, installation..........141
Front passenger occupant
classification system........................ 132
Infant seats, definition......................... 137
Infant seats, installation ........................141
Installing CRS with LATCH
system .................................................... 142
Installing CRS with seat belts......... 144
Installing CRS with top tether
straps ..................................................... 148
Child safety
Airbag precautions............................. 127
Back door precautions...................... 62
Battery
precautions ...........................682, 796
Child restraint system........................ 137
Child-protectors ................................... 53
How your child should wear
the seat belt .......................................... 85 Installing child restraints ..................... 141
Moon roof precautions .................... 104
Power window lock switch ............. 98
Power window precautions...........100
Removed electron ic key battery
precautions ........................................702
Seat belt extender precautions ..... 89
Seat belt precautions.......................... 86
Seat heater precautions................... 621
Child-protectors...................................... 53
Cleaning
Exterior ................................................... 650
Interior..................................................... 653
Seat belts ............................................... 654
Clock* .......................................................... 611
Coat hooks.............................................. 623
Coin holder ............................................. 606
Compass .................................................. 638
Condenser .............................................. 678
Console box ........................................... 604
Coolant
Engine coolant..................................... 677
Cooling system
Engine overheating .......................... 799
Cornering assist sensors ................... 245
Cruise control
Cruise control ...................................... 227
Dynamic radar cruise control......232
Cup holders ............................................. 601
Curtain shield airbags ........................... 119
Customizable features ....................... 834C