oil pressure LEXUS RX350 2020 Owners Manual

RX350_RX350L_U
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8
9
Pictorial indexSearch by illustration
For safety
and securityMake sure to read through them
(Main topics: Child seat, theft deterrent system)
Vehicle status
information and
indicatorsReading driving-related information
(Main topics: Meters, multi-information display)
Before drivingOpening and closing the doors and windows,
adjustment before driving
(Main topics: Keys, doors, seats)
DrivingOperations and advice which are necessary for driving
(Main topics: Starting engine, refueling)
Interior featuresUsage of the interior features
(Main topics: Air conditioner, storage features)
Maintenance
and careCaring for your vehicle and maintenance procedures
(Main topics: Interior and exterior, light bulbs)
When trouble
arisesWhat to do in case of malfunction and emergency
(Main topics: Battery discharge, flat tire)
Vehicle
specificationsVehicle specifications, customizable features
(Main topics: Fuel, oil, tire inflation pressure)
For ownersReporting safety defects for U.S. owners, and seat belt,
SRS airbag and headlight aim instructions for Canadian
owners
IndexSearch by symptom
Search alphabetically

4TABLE OF CONTENTS
6-1. Maintenance and careCleaning and protecting the vehi-cle exterior ................................... 350
Cleaning and protecting the vehi- cle interior .................................... 353
6-2. Maintenance Maintenance requirements ..... 356
General maintenance ................ 357
Emission inspection and mainte- nance (I/M) programs ............ 360
6-3. Do-it-yourself maintenance Do-it-yourself service precautions............................................................ 361
Hood.................................................. 363
Positioning a floor jack............... 363
Engine compartment.................. 365
Tires .................................................... 371
Tire inflation pressure ................. 383
Wheels.............................................. 384
Air conditioning filter..................386
Windshield wiper inserts........... 388
Electronic key battery ................ 389
Checking and replacing fuses ............................................................ 391
Headlight aim................................. 392
Light bulbs ....................................... 394
7-1. Essential information Emergency flashers..................... 404
If your vehicle has to be stopped in an emergency ............................. 404If the vehicle is trapped in rising
water .............................................. 405
7-2. Steps to take in an emergency If your vehicle needs to be towed.......................................................... 407
If you think something is wrong ............................................................. 411
Fuel pump shut off system .......... 412
If a warning light turns on or a warn- ing buzzer sounds....................... 413
If a warning messa ge is displayed
........................................................... 422
If you have a flat tire .................... 426
If the engine will not start .......... 438
If you lose your keys.................... 440
If the fuel filler door cannot be opened .......................................... 440
If the electronic key does not oper- ate properly ................................... 441
If the vehicle battery is discharged .......................................................... 443
If your vehicle overheats ........... 447
If the vehicle becomes stuck ... 449
8-1. Specifications Maintenance data (fuel, oil level, etc.) ................................................. 452
Fuel information............................ 459
Tire information ............................. 461
8-2. Customization Customizable features .............. 470
8-3. Initialization Items to initialize ........................... 483
6Maintenance and care
7When trouble arises
8Vehicle specifications

13Pictorial index
Precautions for winter season .....................................................................................P.283
To prevent freezing (windshield wiper de-icer)
*.................................................P.303
Precautions for car wash ................................................................................................ P.351
Fuel filler door ........................................................................................................ P.202
Refueling method ............................................................................................................. P. 202
Fuel type/fuel tank capacity ...... ................................................................................... P.454
Tires.......................................................................................................................... ... P.371
Tire size/inflation pressure ................................................................................. P.371, 457
Winter tires/tire chains ..................................................................................................P.283
Checking/rotation/tire pressure warning system................................................P.371
Coping with flat tires........................................................................................................ P .426
Hood ..........................................................................................................................P.363
Opening ........................................................................................................................ ....... P.363
Engine oil ..................................................................................................................... ......... P.454
Coping with overheating ............................................................................................... P.447
Warning messages .......................................................................................................... P.422
Headlights/front turn signal lights/front side marker lights ............ P.184, 190
Side turn signal lights .............................................................................................P.184
Parking lights/daytime running lights...............................................................P.190
Fog lights/cornering lights
*....................................................................... P.190, 195
Rear side marker lights .........................................................................................P.190
Stop/tail lights ..........................................................................................................P.190
Back-up lights/rear turn signal lights ...................................................... P.184, 190
Shifting the shift lever to R .............................................................................................. P.18 0
License plate lights .................................................................................................P.190
*:If equipped
Light bulbs of the exterior lights for driving
(Replacing method: P.394, Watts: P.458)
E
F
G
H
I
J
K
L
M
N
O

712-1. Instrument cluster
2
Vehicle status information and indicators
Warning lights inform the driver of mal-
functions in the indicated vehicle’s sys-
tems.
Warning lights
(U.S.A.)
Brake system warning light*1
(  P.413)
(red)
(Canada)
Brake system warning light*1
(  P.413)
(yellow)
Brake system warning light*1
(  P.413)
High coolant temperature
warning light
*2 (  P.413)
Charging system warning
light
*3 (  P.414)
Low engine oil pressure warn-
ing light
*2 (  P.414)
(U.S.A.)
Malfunction indicator lamp*1
(  P.414)
(Canada)
Malfunction indicator lamp*1
(  P.414)
SRS warning light
*1 (  P.414)
(U.S.A.)
ABS warning light*1 ( P.415)
(Canada)
ABS warning light*1 ( P.415)
Brake Override System warn-
ing light/Drive-Start Control
warning light
*2 (  P.415)
(red)
Electric power st eering system
warning light
*1 (  P.415)
(yellow)
Electric power steering system
warning light
*1 ( P.415)
Low fuel level warning light
(  P.416)
Driver’s and front passenger’s
seat belt reminder light
(  P.416)
(RX350)
Rear passengers’ seat
belt reminder light
*4
(  P.416)
(RX350L)
Rear passengers’ seat
belt reminder
light
*4( P.416)
Tire pressure warning light
*1
(  P.417)
(orange)
LTA indicator ( P.417)
(flashes)
Intuitive parking assist OFF indi-
cator
*1 (if equipped) ( P.417)
(flashes)
RCTA OFF indicator*1 (if
equipped) ( P.417)
(flashes)
PKSB OFF indicator*1 (if
equipped) ( P.418)
(flashes or
illuminates)PCS warning light*1 (  P.418)
Slip indicator
*1 (  P.418)
(flashes)
(U.S.A.)
Parking brake indicator
(  P.419)
(flashes)
(Canada)
Parking brake indicator
(  P.419)

2824-6. Driving tips
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 front tires.
Ensure that all tires ar e of the specified size
and the same brand, and that chains match
the size of the tires.
Perform the following according to the
driving conditions:
 Do not try to forcibly open a window
or move a wiper that is frozen. Pour
warm water over the frozen area to
melt the ice. Wipe away the water
Winter driving tips
Carry out the necessary prepara-
tions and inspections before driving
the vehicle in winter. Always drive
the vehicle in a manner appropriate
to the prevailing weather condi-
tions.
Pre-winter preparations
WARNING
■Driving with snow tires
Observe the following precautions to
reduce the risk of accidents.
Failure to do so may result in a loss of
vehicle control and cause death or seri-
ous injury.
●Use tires of the specified size.
●Maintain the recommended level of air
pressure.
●Do not drive in excess of 75 mph (120
km/h), regardless of the type of snow
tires being used.
●Use snow tires on all, not just some
wheels.
■Driving with tire chains
Observe the following precautions to
reduce the risk of accidents.
Failure to do so may result in the vehicle
being unable to be driven safely, and may
cause death or serious injury.
●Do not drive in excess of the speed
limit specified for the tire chains being
used, or 30 mph (50 km/h), which-
ever is lower.
●Avoid driving on bumpy road surfaces
or over potholes.
●Avoid sudden acceleration, abrupt
steering, sudden br aking and shifting
operations that cause sudden engine
braking.
●Slow down sufficiently before entering
a curve to ensure that vehicle control is
maintained.
●Do not use the LTA (Lane Tracing
Assist) system.
NOTICE
■Repairing or replacing snow tires
Request repairs or replacement of snow
tires from your Lexus dealer or legitimate
tire retailers.
This is because the removal and attach-
ment of snow tires affects the operation
of the tire pressure warning valves and
transmitters.
Before driving the vehicle

3506-1. Maintenance and care
6-1.Maintenance and care
Working from top to bottom, liber-
ally apply water to the vehicle body,
wheel wells and underside of the
vehicle to remove any dirt and dust.
 Wash the vehicle body using a
sponge or soft cloth, such as a
chamois.
 For hard-to-remove marks, use car
wash soap and rinse thoroughly with
water.
 Wipe away any water.
 Wax the vehicle when the water-
proof coating deteriorates.
If water does not bead on a clean surface,
apply wax when the vehicle body is cool.
■Self-restoring coat
The vehicle body has a self-restoring coat-
ing that is resistant to small surface
scratches caused in a car wash etc.
●The coating lasts for 5 to 8 years from
when the vehicle is delivered from the
plant.
●The restoration time differs depending on
the depth of the scratch and outside tem-
perature.
The restoration time may become
shorter when the coating is warmed by
applying warm water.
●Deep scratches caused by keys, coins,
etc. cannot be restored.
●Do not use wax that contains abrasives.
■Automatic car washes
●Before washing the vehicle:
• Fold the mirrors
• Turn off the power back door
Start washing from the front of the vehicle.
Extend the mirrors before driving.
●Brushes used in automatic car washes
may scratch the vehicl e surface and harm
your vehicle’s paint.
●Rear spoiler may not be washable in
some automatic car washes. There may
also be an increased risk of damage to
vehicle.
■High pressure car washes
As water may enter the cabin, do not bring
the nozzle tip near the gaps around the
doors or perimeter of the windows, or spray
these areas continuously.
■When using a car wash
If the door handle becomes wet while the
electronic key is within the effective range,
the door may lock and unlock repeatedly. In
that case, follow the following correction
procedures to wash the vehicle:
●Place the key in a position 6 ft. (2 m) or
more separate from the vehicle while the
vehicle is being wash ed. (Take care to
ensure that the key is not stolen.)
●Set the electronic key to battery-saving
mode to disable the smart access system
with push-button start. ( P.114)
■Aluminum wheels
●Remove any dirt immediately by using a
neutral detergent.
●Wash detergent off with water immedi-
ately after use.
●To protect the paint from damage, make
sure to observe the following precau-
tions.
• Do not use acidic, alkaline or abrasive detergent
• Do not use hard brushes
• Do not use detergent on the wheels when they are hot, such as after driving or park-
ing in hot weather
■Bumpers
Do not scrub with abrasive cleaners.
Cleaning and protecting the
vehicle exterior
Perform cleaning in a manner
appropriate to each component
and its material.
Cleaning instructions

3526-1. Maintenance and care
WARNING
●Lexus Safety System + 2.0
●BSM (if equipped)
●RCTA (if equipped)
●PKSB (if equipped)
NOTICE
■To prevent paint deterioration and
corrosion on the body and compo-
nents (aluminum wheels, etc.)
●Wash the vehicle immediately in the
following cases:
• After driving near the sea coast
• After driving on salted roads
• If coal tar or tree sap is present on the paint surface
• If dead insects, in sect droppings or
bird droppings are present on the
paint surface
• After driving in an area contaminated with soot, oily smoke, mine dust, iron
powder or chemical substances
• If the vehicle becomes heavily soiled with dust or mud
• If liquids such as benzene and gasoline are spilled on the paint surface
●If the paint is chip ped or scratched,
have it repaired immediately.
●To prevent the wheels from corroding,
remove any dirt and store in a place
with low humidity when storing the
wheels.
■Cleaning the exterior lights
●Wash carefully. Do not use organic
substances or scrub with a hard brush.
This may damage the surfaces of the
lights.
●Do not apply wax to the surfaces of the
lights.
Wax may cause damage to the lenses.
■When using an automatic car wash
(vehicles with rain-sensing windshield
wipers)
Set the wiper switch to the off position.
If the wiper switch is in “AUTO”, the wip-
ers may operate and the wiper blades
may be damaged.
■When using a high pressure car wash
●When washing the vehicle, do not let
water of the high pressure washer hit
directly or the vicinity of the camera.
Due to the shock from the high pres-
sure water, it is possible the device may
not operate as normal.
●Do not bring the nozzle tip close to
boots (rubber or resin manufactured
cover), connectors or the following
parts. The parts may be damaged if
they come into contact with high-pres-
sure water.
• Traction related parts
•Steering parts
• Suspension parts
• Brake parts
●Keep the cleaning nozzle at least 11.9
in. (30 cm) away from the vehicle
body. Otherwise resin section, such as
moldings and bumpers, may be
deformed and damaged.
Also, do not continuously hold the nozzle
in the same place.
●Do not spray the lower part of the
windshield continuously.
If water enters the air conditioning sys-
tem intake located near the lower part of
the windshield, the air conditioning sys-
tem may not operate correctly.

3536-1. Maintenance and care
6
Maintenance and care
Remove dirt and dust using a vac-
uum cleaner. Wipe dirty surfaces
with a cloth dampened with luke-
warm water.
 If dirt cannot be removed, wipe it off
with a soft cloth dampened with
neutral detergent diluted to approx-
imately 1%.
Wring out any excess water from
the cloth and thoroughly wipe off
remaining traces of detergent and
water.
■Shampooing the carpets
There are several commercial foaming-type
cleaners available. Use a sponge or brush
to apply the foam. Rub in overlapping cir-
cles. Do not use water. Wipe dirty surfaces
and let them dry. Excellent results are
obtained by keeping the carpet as dry as
possible.
■Handling the seat belts
Clean with mild soap and lukewarm water
using a cloth or sponge. Also check the
belts periodically for excessive wear, fraying
or cuts.
NOTICE
●Vehicles with towing package: Do not
point the nozzle of a high pressure
washer at the areas shown in the illus-
tration, as high pressure water may
damage the oil cooler.
Cleaning and protecting the
vehicle interior
Perform cleaning in a manner
appropriate to each component
and its material.
Protecting the vehicle interior
WARNING
■Water in the vehicle
●Do not splash or spill liquid in the vehi-
cle.
Doing so may cause electrical compo-
nents, etc. to malfunction or catch fire.

3626-3. Do-it-yourself maintenance
Light bulbs
( P.394)
•Bulb with same num-
ber and wattage rat-
ing as original
•Flathead screw- driver
•Wrench
Radiator and con-
denser ( P.368)
Tire inflation pres-
sure ( P.383)• Tire pressure gauge
•Compressed air
source
Washer fluid
( P.370)
• Water or washer
fluid containing anti-
freeze (for winter
use)
• Funnel (used only for adding water or
washer fluid)
WARNING
The engine compartment contains many
mechanisms and fluids that may move
suddenly, become hot, or become elec-
trically energized. To avoid death or seri-
ous injury, observe the following
precautions.
■When working on the engine com-
partment
●Keep hands, clothi ng 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.
ItemsParts and tools●Be extremely cautious when working
on the battery. It contains poisonous
and corrosive sulfuric acid.
■When working near the electric cool-
ing fan or radiator grille
Be sure the engine switch is off.
With the engine switch in IGNITION
ON mode, the electric cooling fan may
automatically start to run if the air condi-
tioning is on and/or the coolant tempera-
ture is high. ( P.368)
■Safety glasses
Wear safety glasses to prevent flying or
falling material, fluid spray, etc. from get-
ting 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.

4147-2. Steps to take in an emergency
■Charging system warning light*
*: Except F SPORT models: This light illuminates on the multi-information display.
F SPORT models: This light illuminates on the meter.
■Low engine oil pressure warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
■Malfunction indicator lamp
■SRS warning light
Warning lightDetails/Actions
Indicates a malfunction in the vehicle’s charging system
Immediately stop the vehicle in a safe place and contact your Lexus
dealer. Continuing to drive the vehicle may be dangerous.
Warning lightDetails/Actions
Indicates that the engine oil pressure is too low
 Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
Warning lightDetails/Actions
(U.S.A.)
or
(Canada)
Indicates a malfunction in:
 The electronic engine control system;
 The electronic throttle control system; or
 The electronic automatic transmission control system
 Have the vehicle inspected by your Lexus dealer immediately.
Warning lightDetails/Actions
Indicates a malfunction in:
The SRS airbag system;
 The front passenger occupant classification system; or
 The seat belt pretensioner system
 Have the vehicle inspected by your Lexus dealer immediately.