2018 LEXUS RCF fuel cap

4216-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 6
Maintenance and care Tire valve
Tire pressure gauge
Remove the tire valve cap.
Press the tip of the tire pressure gauge onto the tire valve.
Read the pressure using the gauge gradations.
If the tire inflation pressure is not at the recommended level, adjust the pres-
sure.
If you add too much air, press the center of the valve to deflate.
After completing the tire inflation pressure measuremen t and adjustment,
apply soapy water to the valve and check for leakage.
Put the tire valve cap back on. ■
Tire inflation pressure check interval
You should check tire inflation pressure ev ery two weeks, or at least once a month.
Do not forget to check the spare. ■
Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:●
Reduced fuel economy ●
Reduced driving comfort and poor handling ●
Reduced tire life due to wear ●
Reduced safety ●
Damage to the drivetrain
If a tire needs frequent inflating, ha ve it checked by your Lexus dealer.Inspection and adjustment procedure 1
2
1
2
3
4
5
6

4577-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 7
When trouble arises ■
SRS warning light
This warning light system monitors the airbag sensor assembly, front impact sensors, side
impact sensors (door), side impact sensors (front), side im pact sensors (rear), driver’s
seat position sensor, driver’s seat belt buckle switch, front passenger occupant classifica-
tion system, “AIR BAG ON” indicator light, “A IR BAG OFF” indicator light, front passen-
ger’s seat belt buckle switch, seat belt pretensioners, airbags, interconnecting wiring and
power sources. (  P. 41) ■
Front passenger detection sensor, seat belt reminder and warning buzzer
If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the warning buzzer to sound even if a passenger
is not sitting in the seat. ■
If the malfunction indicator lamp comes on while driving
First check the following: ●
Is the fuel tank empty?
If it is, fill the fu el tank immediately.●
Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after severa l trips, contact your Lexus dealer as soon as
possible. ■
Electric power steering system warning light (warning buzzer)
When the battery charge becomes insufficien t or the voltage temporarily drops, the
electric power steering system warning li ght may come on and the warning buzzer may
sound. ■
When the tire pressure warning light comes on
Check the tire inflation pressu re and adjust to the approp riate level. Pushing the tire
pressure warning reset switch will not tu rn off the tire pressure warning light.■
The tire pressure warning light ma y come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air
leaks and tire inflation pressure changes caus ed by temperature. In this case, adjusting
the tire inflation pressure will turn off the warning light (aft er a few minutes).■
When a tire is replaced with the spare tire (if equipped)
The spare tire is not equipped with a tire pr essure warning valve and transmitter. If a tire
goes flat, the tire pressure warning light will not turn off even though the flat tire has been
replaced with the spare tire. ■
Conditions that the tire pressure wa rning system may not function properly
 P. 417 ■
If the tire pressure warning light freque ntly comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the
engine switch is turned to IGNITION ON mo de, have it checked by your Lexus dealer.■
Warning buzzer
In some cases, the buzzer ma y not be heard due to being in a noisy location or audio
sound.

536
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)8-1. Specifications 
RC350/RC300
* 1
:Unladen vehicle
* 2
: Vehicles with 265/35R19 tires 
RC F
* :Unladen vehicleMaintenance data (fuel, oil level, etc.) Dimensions and weight Overall length 184.8 in. (4695 mm)
Overall width 72.4 in. (1840 mm)
Overall height
* 1
54.9 in. (1395 mm)
Wheelbase 107.5 in. (2730 mm)
Tread
* 1
Front 62.2 in. (1580 mm)
Rear 63.0 in. (1600 mm)
61.8 in. (1570 mm)
* 2
Vehicle capacity weight
(Occupants + luggage) 700 lb. (320 kg)
Overall length 185.2 in. (4705 mm)
Overall width 72.6 in. (1845 mm)
Overall height
* 54.7 in. (1390 mm)
Wheelbase 107.5 in. (2730 mm)
Tread
* Front 61.2 in. (1555 mm)
Rear 61.4 in. (1560 mm)
Vehicle capacity weight
(Occupants + luggage) 700 lb. (320 kg)

540 8-1. Specifications
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)■
Oil capacity (Drain and refill [Reference
* ])
* : The engine oil capacity is a reference quantity to be used when changing the engine
oil. Warm up and turn off the engine, wait more than 5 minutes, and check the oil level
on the dipstick.Fuel Fuel type Unleaded gasoline only
Octane Rating 91 (Research Octane Number 96) or higher
Fuel tank capacity
(Reference) 17.5 gal. (66.3 L, 14.6 Imp. gal.)
Lubrication system With filter Without filter
RC350 6.0 qt. (5.7 L, 5.0 Imp. qt.) 5.8 qt. (5.5 L, 4.8 Imp. qt.)
RC350 AWD/
RC300 AWD 6.8 qt. (6.4 L, 5.6 Imp. qt.) 6.3 qt. (6.0 L, 5.3 Imp. qt.)
RC300 4.9 qt. (4.6 L, 4.0 Imp. qt.) 4.5 qt. (4.3 L, 3.8 Imp. qt.)
RC F 9.3 qt. (8.8 L, 7.7 Imp. qt.) 8.3 qt. (7.9 L, 7.0 Imp. qt.)

564 8-1. Specifications
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)Glossary of tire terminology Tire related term Meaning
Cold tire inflation pressure Tire pressure when the vehicle has been parked for
three hours or more, or has no t been driven more than 1
mile or 1.5 km un der that condition
Maximum inflation pres-
sure The maximum cold inflated pr essure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressure Cold tire inflation pressure recommended by a manu-
facturer
Accessory weight The combined weight (in exce ss of those standard items
which may be replaced) of automatic transmission,
power steering, power brakes, power windows, power
seats, radio and heater, to the extent that these items are
available as factory-installed equipment (whether
installed or not)
Curb weight The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight 150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1
* that follows
Occupant distribution Distribution of occupants in a vehicle as specified in the
third column of Table 1
* below
Production options weight The combined weight of in stalled regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they re place, not previously con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride leve lers, roof rack, heavy duty
battery, and special trim
Rim A metal support for a tire or a tire and tube assembly
upon which the tire beads are seated

622 Alphabetical index
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)First-aid kit storage belt ..................... 353
Flat tire
Vehicles with a spare tire.............. 489
Vehicles with emergency tire
puncture repair kit......................... 502
Floor mats ................................................... 30
Fluid
Automatic transmission ................. 545
Brake ........................................................547
Washer ...................................................... 411
Fog lights .................................................. 232
Replacing light bulbs ........................439
Switch....................................................... 232
Footwell light .......................................... 347
Wattage ................................................. 553
Front fog lights ....................................... 232
Replacing light bulbs ........................439
Switch....................................................... 232
Front passenger occupant
classification system ..............................51
Front seats .................................................. 161
Adjustment ............................................... 161
Cleaning .................................................. 381
Correct driving posture .................... 32
Driving position memory ................ 166
Head restraints ....................................... 171
Jam protection function ................... 162
Power easy access system ............ 166
Seat heaters ..........................................345
Seat position memory....................... 166
Seat ventilators ....................................346 Front turn signal lights .......................... 221
Replacing light bulbs ........... 434, 439
Turn signal lever ................................... 221
Wattage .................................................553
Fuel............................................................... 241
Capacity.................................................540
Fuel gauge ........................................ 91, 96
Fuel pump shut off system ............ 452
Information............................................554
Refueling .................................................. 241
Type............................................. 540, 554
Warning light .......................................455
Fuel consumption
Average fuel economy .......... 108, 122
Current fuel
consumption............................ 108, 122
Fuel filler door.......................................... 241
If the fuel filler door
cannot be opened ......................... 243
Refueling .................................................. 241
Fuel gauge ...........................................91, 96
Fuel pump shut off system .................452
Fuses...........................................................429F

628 Alphabetical index
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)Radar cruise control (dynamic
radar cruise control) ........................ 268
Radiator .................................................... 406
Rear seats ..................................................164
Fold down the seatback .................. 164
Luggage security system ................ 152
Rear turn signal lights ........................... 221
Replacing light bulbs ........................ 432
Turn signal lever ................................... 221
Wattage ................................................. 553
Rear view mirror
Inside rear view mirror ......................176
Outside rear view mirrors .............. 178
Rear window defogger ...................... 338
Refueling .................................................... 241
Capacity ................................................ 540
Fuel types .............................................. 540
If the fuel filler door
cannot be opened ......................... 243
Opening the fuel tank cap............. 243
Remote Touch
* Replacing
Electronic key battery ...................... 427
Fuses.........................................................429
Light bulbs ............................................. 432
Tires ......................................................... 489
Reporting safety defects
for U.S. owners...................................600
Resetting the message indicating
maintenance is required ................385
Rev indicator ..................................... 93, 99
Rev peak ...........................................93, 100 Seat belt reminder light ..................... 455
Seat belts .....................................................34
Automatic Locking Retractor ........ 36
Child restraint system
installation ............................................. 58
Cleaning and maintaining
the seat belt ....................................... 382
Emergency Locking
Retractor................................................ 36
How to wear your seat belt............. 34
How your child should wear
the seat belt .......................................... 36
Pregnant women, proper
seat belt use ..........................................37
Reminder light and buzzer ...........455
Seat belt extender ................................ 36
Seat belt guide ....................................... 35
Seat belt pretensioners...................... 35
SRS warning light .............................. 453R S

636
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) GAS STATION INFORMATION
Auxiliary catch lever Trunk opener Fuel filler door
P. 393 P. 151 P. 241
Hood lock release lever Tire inflation pressure
P. 393
P. 548
Fuel tank capacity
(Reference) 17.5 gal. (66.3 L, 14.6 Imp. gal.)
Fuel type Unleaded gasoline only P. 540, 554
Cold tire inflation
pressure P. 548
Engine oil capacity
(Drain and refill —
reference) P. 540
Engine oil type P. 540