2017 LEXUS RC F cooling

6338-2. Steps to take in an emergency
8
When trouble arises
Add coolant if necessary.
Water can be used in an emergency if coolant is unavailable.
Start the engine and turn the air conditio ning system on to check that the radi-
ator cooling fans operate 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 fan 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.
5
Engine (RC350/RC300)Engine (RC200t)
Engine (RC F)Intercooler (RC200t)
6
7

6358-2. Steps to take in an emergency
8
When trouble arises
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has cooled 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.

6489-1. Specifications
■Spark plug
Cooling system
Capacity
RC350/
RC30010.1 qt. (9.6 L, 8.4 Imp. qt.)
RC200t
Gasoline engine
8.5 qt. (8.0 L, 7.0 Imp. qt.)
Intercooler
3.3 qt. (3.1 L, 2.7 Imp. qt.)
RC F12.3 qt. (11.6 L, 10.2 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 coolant
with long-life hybrid organic acid technology
Do not use plain water alone.
Ignition system
RC350/RC300RC200tRC F
MakeDENSO
FK20HBR11NGK DILFR7K9GDENSO
FK20HBR-J8
Gap0.043 in. (1.1 mm)0.035 in. (0.9 mm)0.031 in. (0.8 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
Battery
Open voltage at 68°F
(20° C):12.3 V or higher
If the voltage is lower than the standard value, charge
the battery.
(Voltage is checked 20 minutes after the engine and all
lights are turned off.)
Charging rates5 A max.

705Alphabetical index
Child safety ................................................ 57Airbag precautions .............................. 42
Battery precautions ............... 515, 629
Child restraint system ........................ 58
How your child should wear the seat belt .......................................... 36
Installing child restraints.................... 58
Moon roof precautions.................... 190
Power window lock switch ............ 183
Power window precautions .......... 186
Removed electronic key battery precautions.............. 539
Seat belt extender precautions ........................................... 39
Seat belt precautions ..........................38
Seat heater precautions..................445
Trunk precautions............................... 150 Cleaning ...................................... 480, 485
Aluminum wheels ................................481
Exterior .................................................. 480
Interior .....................................................485
Seat belts................................................486
Clock......................................................... 456
Coat hooks ............................................. 459
Compass ................................................. 468
Condenser................................................. 511
Console box ............................................452
Cooling system ..................................... 509 Engine overheating ..........................630
Cruise control Cruise control ..................................... 245
Dynamic radar cruise control ..... 249
Cup holders............................................ 453
Current fuel consumption ........... 112, 119
Curtain shield airbags ........................... 40
Customizable features .......................673