oil temperature LEXUS RC F 2015 Owners Manual

982. Instrument cluster
RC350/RCF_U (OM24636U)
Multi-information display
Presents the driver with a variety of vehicle data ( P. 1 1 0 )
Displays warning messages in case of a malfunction ( P. 5 3 9 )
Fuel gauge
Engine coolant temperature gauge
Displays the engine coolant temperature. If the engine coolant temperature gauge
indicator ( ) enters the red zone, a buzzer will sound and the indicator will turn red
and start flashing. Also, a warning message will be displayed.
Engine oil temperature gauge
Displays the engine oil temperature. If the engine oil temperature gauge indicator
( ) enters the red zone, the indicator will turn red and start flashing.
Outside temperature
Displays the outside temperature within the range of -40°F (-40°C) to 122°F
(50°C). Low outside temperature indicator comes on when the ambient temperature
is 37°F (3°C) or lower.
Tachometer
Displays the engine speed in revolutions per minute
Digital speedometer
Analog speedometer
Shift position and gear position
(  P. 199)
Odometer and trip meter display
Odometer:
Displays the total distance the vehicle has been driven
Tr i p m e t e r :
Displays the distance the vehicle has been driven since the meter was last reset. Trip
meters “A” and “B” can be used to record and display different distances indepen-
dently.
Eco driving meter
Displays the vehicle acceleration. The more rapidly the vehicle is accelerated, the
lower the number of blue segments displayed, indicating that your driving is less eco-
friendly. This meter is designed as a guid eline to show the eco-friendliness of your
driving.
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1022. Instrument cluster
RC350/RCF_U (OM24636U)
■Instrument panel brightness adjustment
The instrument panel brig htness levels when the tail ligh ts are on and off can be adjusted
individually. However, when the surroundings ar e bright (daytime, etc.), turning on the tail
lights will not change the instru ment panel brightness. At this time, any adjustments made
to the instrument panel bright ness levels will be applied to both settings at once.
■Dimming the analog speedometer lighting
The analog speedometer lighting will be dimm ed when the ambient light is bright, such
as during the daytime, and SPORT S or SPORT S+ mode is selected.
■Outside temperature display
●In the following situations, the correct outside temperature may not be displayed, or the
display may take longer than normal to change.
• When stopped, or driving at low speeds (less than 12 mph [20 km/h])
• When the outside temperature has change d suddenly (at the entrance/exit of a
garage, tunnel, etc.)
●When “ ” or “E” is displayed, the system may be malfunctioning.
Take your vehicle to your Lexus dealer.
■Pop-up display
●In some situations, such as when a switch operation is pe rformed, a pop-up display will
be temporarily displayed on the multi-information display.
●Some pop-up displays can be set on/off. ( P. 1 1 9 )
■Liquid crystal display
Small spots or light spots may appear on the display. This phenomenon is characteristic
of liquid crystal displays, and there is no problem continuing to use the display.
■Customization
The meter display can be customized on the multi-information display. (P. 1 1 0 )
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator of the tachometer enter the red zone, as it represents the
engine speed range which exceeds the maximum safe engine speed.
●In the following situations, the engine may be overheating. In this case, immediately
stop the vehicle in a safe place, and check the engine after it has cooled completely.
(  P. 5 9 7 )
• The engine coolant temperature gauge indi cator ( ) is in the red zone and flash-
ing.
• The engine oil temperature gauge indicato r ( ) is in the red zone and flashing.

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Driving
RC350/RCF_U (OM24636U)4-6. Driving tips
●Use fluids that are appropriate to the prevailing outside temperatures.
•Engine oil
• Engine coolant
• Washer fluid
●Have a service technician inspect the condition of the battery.
●Have the vehicle fitted with four snow tires or purchase a set of tire chains for
the rear tires.
*
Ensure that all tires are the specified size and brand, and that chains match the size
of the tires.
*: Tire chains cannot be mounted on the vehicles with front and rear tires of differing sizes.
●Use fluids that are appropriate to the prevailing outside temperatures.
•Engine oil
• Engine coolant
• Washer fluid
●Have a service technician inspect the condition of the battery.
●Have the vehicle fitted with four snow tires.
Ensure that all tires are the specified size and brand.
Winter driving tips
Carry out the necessary preparations and inspections before driving the vehi-
cle in winter. Always drive the vehicle in a manner appropriate to the prevail-
ing weather conditions.
Preparation for winter (RC350)
Preparation for winter (RC F)

4747-3. Do-it-yourself maintenance
RC350/RCF_U (OM24636U)
WA R N I N G
The engine compartment contains many mechanisms and fluids that may move suddenly,
become hot, or become electrically energized. To avoid death or serious injury, observe
the following precautions.
■When working on the engine compartment
●Keep hands, clothing and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, radiator, exhaust manifold, etc. right after driving
as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper and rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel and
battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and corro-
sive sulfuric acid.
■When working near the electric cooling fans or radiator grille
Be sure the engine switch is off.
With the engine switch in IGNITION ON mode, the electric cooling fans may auto-
matically start to run if the air conditioning is on and/or the coolant temperature is high.
(  P. 4 8 5 )
■Safety glasses
Wear safety glasses to prevent flying or fallin g material, fluid spray, etc. from getting in
your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear due to dirt
in the air.

4817-3. Do-it-yourself maintenance
7
Maintenance and care
RC350/RCF_U (OM24636U)
With the engine at operating temperature and turned off, check the oil level on
the dipstick.
■Checking the engine oil
Park the vehicle on level ground. After warming up the engine and turning
it off, wait more than 5 minutes for the oil to drain back into the bottom of
the engine.
Holding a rag under the end, pull the dipstick out.
Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding a rag under the end, pull
the dipstick out and check the oil
level.
Low
Normal
Excessive
The shape of the dipstick may dif-
fer depending on the type of vehi-
cle or engine.
Wipe the dipstick and reinsert it fully.
Engine oil
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6089-1. Specifications
RC350/RCF_U (OM24636U)
■Engine oil selection (RC350)
“Toyota Genuine Motor Oil” is used in your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil” or equivalent to satisfy the following
grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice for
good fuel economy and good start-
ing in cold weather.
If SAE 0W-20 is not available, SAE
5W-20 oil may be used. However, it
must be replaced with SAE 0W-20
at the next oil change.
Oil viscosity (0W-20 is explained here as an example): • The 0W in 0W-20 indicates the characteristic of the oil which allows cold startability. Oils with a lower value before the W allow for easier starting of
the engine in cold weather.
• The 20 in 0W-20 indicates the viscos ity characteristic of the oil when the
oil is at high temperature. An oil with a higher viscosity (one with a higher
value) may be better suited if the vehicle is operated at high speeds, or
under extreme load conditions.
How to read oil container label:
The International Lubricant Specifi-
cation Advisory Committee
(ILSAC) Certification Mark is added
to some oil containers to help you
select the oil you should use.
Outside temperature

6099-1. Specifications
9
Vehicle specifications
RC350/RCF_U (OM24636U)
■Engine oil selection (RC F)
“Toyota Genuine Motor Oil” is used in your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil” or equivalent to satisfy the following
grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 5W-30
SAE 5W-30 is the best choice for
good fuel economy and good start-
ing in cold weather.
If SAE 5W-30 is not available, SAE
10W-30 oil may be used. However,
it must be replaced with SAE 5W-
30 at the next oil change.
Oil viscosity (5W-30 is explained here as an example): • The 5W in 5W-30 indicates the characteristic of the oil which allows cold startability. Oils with a lower value before the W allow for easier starting of
the engine in cold weather.
• The 30 in 5W-30 indicates the viscosity characteristic of the oil when the oil is at high temperature. An oil with a higher viscosity (one with a higher
value) may be better suited if the vehicle is operated at high speeds, or
under extreme load conditions.
How to read oil container label:
The International Lubricant Specifi-
cation Advisory Committee
(ILSAC) Certification Mark is added
to some oil containers to help you
select the oil you should use.
Outside temperature

670Alphabetical index
RC350/RCF_U (OM24636U)
Engine ....................................................... 606ACCESSORY mode....................... 194
Compartment...................................... 479
Engine switch ........................................ 193
Hood ........................................................475
How to start the engine ................... 193
Identification number ...................... 606
If the engine will not start............... 587
Ignition switch (engine switch)..... 193
Overheating .........................................597
Engine coolant....................................... 484 Capacity .................................................. 610
Checking............................................... 484
Preparing and checking before winter ..................................... 315
Engine coolant temperature gauge ................................................90, 96
Engine immobilizer system ..................76
Engine oil .................................................. 481 Capacity ................................................ 607
Checking................................................. 481
Preparing and checking before winter ..................................... 315
Engine oil temperature gauge ........... 96
Engine switch ...........................................193
Enhanced VSC ..................................... 282
EPS (Electric Power Steering) ....... 283 Warning light .......................................534
Event data recorder (EDR) ...................10
Expert mode ........................................... 286 First-aid kit storage belt......................434
Flat tire
Vehicles with a spare tire ............. 560
Vehicles with emergency tire puncture repair kit ......................... 574
Floor mats................................................... 30
Fluid Automatic transmission ..................... 611
Brake..........................................................613
Washer ...................................................490
Fog lights.................................................... 216 Replacing light bulbs .........................519
Switch ........................................................ 216
Footwell light .......................................... 428 Wattage ...................................................619
Front fog lights......................................... 216 Replacing light bulbs .........................519
Switch ........................................................ 216
Front passenger occupant classification system ........................... 50
Front seats ................................................. 152 Adjustment.............................................. 152
Cleaning................................................. 463
Correct driving posture .....................32
Driving position memory................. 157
Head restraints ...................................... 161
Jam protection function....................153
Seat heaters .......................................... 426
Seat position memory ....................... 157
Seat ventilators.....................................427F

675Alphabetical index
RC350/RCF_U (OM24636U)
Odometer ..........................................90, 96
OilEngine oil............................................... 607
Front differential oil............................... 611
Rear differential oil .............................. 612
Opener Hood ........................................................475
Trunk ........................................................... 141
Outer foot lights.................................... 428
Outside rear view mirrors ................. 168 Adjusting and folding........................ 168
Blind spot monitor............................. 297
Linked mirror function when reversing ................................. 169
Mirror position memory .................. 157
Outside rear view mirror defoggers ............................420
Outside temperature.....................90, 96
Overheating ........................................... 597 Paddle shift switches................. 201, 202
Parking assist sensors
(intuitive parking assist)...................254
Parking brake ........................................ 205
Parking lights ......................................... 208 Light switch...........................................208
Replacing light bulbs .........................519
PCS (Pre-Collision System)............ 290 PCS OFF switch .................................. 291
Warning light ....................................... 534
Personal lights ....................................... 430
Pop-up display ............................... 107, 119
Power outlet ........................................... 436
Power steering (Electric power steering system) ................................ 283 Warning light ....................................... 534
Power windows.........................................171 Door lock linked window operation ........................... 173
Jam protection function.................... 172
Operation.................................................. 171
Window lock switch ............................ 171
Pre-Collision System (PCS)............ 290 PCS OFF switch .................................. 291
Warning light ....................................... 534
OP
*: For vehicles with a navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.