maintenance LEXUS RX350L 2019 Owners Manual

RX350/RX350L_U
Pictorial indexSearch by illustration
1For safety
and securityMake sure to read through them
2Instrument clusterHow to read the gauges and meters, the variety of
warning lights and indicators, etc.
3Operation of
each componentOpening and closing the doors and windows,
adjustment before driving, etc.
4DrivingOperations and advice which are necessary for driving
5Lexus Display
Audio systemOperating the Lexus Display Audio system
6Interior featuresUsage of the interior features, etc.
7Maintenance
and careCaring for your vehicle and maintenance procedures
8When trouble
arisesWhat to do in case of malfunction or emergency
9Vehicle
specificationsVehicle specifications, customizable features, etc.
10For owners
Reporting safety defects for U.S. owners, and seat belt,
SRS airbag and headlight aim instructions for Canadian
owners
IndexSearch by symptom
Search alphabetically

TABLE OF CONTENTS6
RX350/RX350L_U
7-1. Maintenance and careCleaning and protecting the vehicle exterior ................ 576
Cleaning and protecting the vehicle interior................... 581
7-2. Maintenance Maintenance requirements ............................ 584
General mainte nance.............. 586
Emission inspection and maintenance (I/M)
programs....................................589
7-3. Do-it-yourself maintenance
Do-it-yourself service precautions................................590
Hood ............................................... 592
Positioning a floor jack ............ 593
Engine compartment ............... 594
Tires ................................................. 604
Tire inflation pressure ................613
Wheels .............................................616
Air conditioning filter ................ 618
Windshield wiper inserts ..........621
Electronic key battery.............. 623
Checking and replacing fuses.............................................. 625
Headlight aim .............................. 628
Light bulbs .................................... 630 8-1. Essential information
Emergency flashers .................. 644
If your vehicle has to be stopped in
an emergency .......................... 645
8-2. Steps to take in an emergency
If your vehicle needs to be towed ............................... 646
If you think something is wrong........................................... 652
Fuel pump shut off system...... 653
If a warning light turns on or a warning buzzer
sounds ......................................... 654
If a warning message is displayed ......................................661
If you have a flat tire .................. 666
If the engine will not start ........ 682
If the electronic key does not operate properly ............. 684
If the vehicle battery is discharged................................. 687
If your vehicle overheats......... 692
If the vehicle becomes stuck ............................................. 695
7Maintenance and care8When trouble arises

7
1
9 8
7 5 4
3
2
10
RX350/RX350L_U
6
9-1. Specifications Maintenance data (fuel, oil level, etc.) .................. 698
Fuel information ......................... 706
Tire information .......................... 709
9-2. Customization Customizable features .............722
9-3. Initialization Items to initialize......................... 735
Reporting safety defects for U.S. owners ........................................... 738
Seat belt instructions for Canadian owners (in French)........ 739
SRS airbag instructions for Canadian owners (in French)........ 740
Headlight aim instructions for Canadian owners (in French)........ 748 What to do if...
(Troubleshooting)............................... 752
Alphabetical inde x ................................ 756
9Vehicle specifications
10For owners
Index
For vehicles with a navigation system, refer to the “NAVIGATION SYSTEM
OWNER’S MANUAL” for information re garding the equipment listed below.
• Navigation system
• Audio/visual system
• Rear seat entertainment system• Panoramic view monitor
•Lexus Enform

74
RX350/RX350L_U1-3. Theft deterrent system
The indicator light flashes after the
engine switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the engine switch has been turned to
ACCESSORY or IGNITION ON
mode to indicate that the system has
been canceled.
■System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
■Conditions that may cause the system to malfunction
●If the grip portion of the key is
in contact with a metallic object
●If the key is in close proximity to or touching a key registered to the security system (key
with a built-in transponder chip) of another vehicle
Engine immobilizer system
The vehicle’s keys have built-in transponder chips that prevent the engine
from starting if a key has not been previously registered in the vehicle’s on-
board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
This system is designed to help preven t vehicle theft but does not guarantee
absolute security agai nst all vehicle thefts.

771-3. Theft deterrent system
1
For safety and security
RX350/RX350L_U
The alarm uses light and sound to give an alert when an intrusion is detected.
The alarm is triggered in the following situations when the alarm is set:
●A locked door is unlocked or opened in any way other than using the entry
function, wireless remote control or mech anical key. (The doors will lock again
automatically.)
●The hood is opened.
Close the doors and hood, and lock all
the doors. The system will be set auto-
matically after 30 seconds.
The indicator light changes from being
on to flashing when the system is set.
Do one of the following to de activate or stop the alarms:
●Unlock the doors.
●Turn the engine switch to ACCESSOR Y or IGNITION ON mode, or start
the engine. (The alarm will be deactivat ed or stopped after a few seconds.)
■System maintenance
The vehicle has a maintenance-free type alarm system.
■Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the follow-
ing:
●Nobody is in the vehicle.
●The windows and moon roof or panoramic mo on roof are closed before the alarm is
set.
●No valuables or other personal items are left in the vehicle.
Alarm
The alarm
Setting the alarm system
Deactivating or stopping the alarm

1022. Instrument cluster
RX350/RX350L_U
■Meter settings
Scheduled maintenance (U.S.A. only)
Maintenance data reset
Select to reset the message indicating
maintenance is re quired, after the
required maintenance is performed.
(  P. 585)
Oil maintenance
Engine oil maintenance data reset
Select to reset the engine oil mainte-
nance information (message indicat-
ing maintenance is required and
distance until the next oil change)
after engine oil maintenance is per-
formed. ( P. 597)
ItemSettingsDetails
ItemSettingsDetails
Language Select to change the language dis-
played.
UnitsSelect to change the units of measure
displayed.
(Eco Driving
Indicator Light)OnSelect to enable/dis able the Eco Driv-
ing Indicator Light. ( P. 105)
Off
Switch settingsSelect to display how to change the
top screen.
Drive information 1Select to select up to 2 items that will
be displayed on ea ch Drive informa-
tion screen (Drive information 1
screen, Drive information 2 screen,
and Drive inform ation 3 screen)
respectively.
(Selectable items:  P. 94)
Drive information 2
Drive information 3

1042. Instrument cluster
RX350/RX350L_U
◆Display items
■Odometer
Displays the total distance the vehicle has been driven.
■Trip meter A/trip meter B
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 dis-
tances independently.
To reset, display the desired trip meter and press and hold the “ODO/TRIP”
switch.
■ Distance until next engine oil change
Displays the distance the vehicle can be driven until an oil change is neces-
sary.
◆Pop-up display
In some situations the following will be temporarily displayed:
■ Distance until next engine oil change
Displays the distance until the next engi ne oil change. This display will be dis-
played in the following situations:
• When the engine switch is tu rned to IGNITION ON mode.
• When a warning message indicating that oil maintenance should be performed
soon or is required is displayed.
Odometer/trip meter display area

2264-1. Before driving
RX350/RX350L_U
■Break-in schedule
If your vehicle is new or equipped with any new power train components (such as an
engine, transaxle, transfer (AWD models), rear differential (AWD models) or wheel
bearing), Lexus recommends that you do not tow a trailer until the vehicle has been
driven for over 500 miles (800 km).
After the vehicle has been driven for over 500 miles (800 km), you can start towing.
However, for the next 500 miles (800 km), drive the vehicle at a speed of less than
50 mph (80 km/h) when towing a trailer, and avoid full throttle acceleration.
■Maintenance
●If you tow a trailer, your vehicle will require more frequent maintenance due to the addi-
tional load. (See “Warranty and Services Guide”, “Owner’s Manual Supplement” or
“Scheduled Maintenance”.)
●Retighten the fixing bolts of the towing ba ll and bracket after approximately 600 miles
(1000 km) of trailer towing.
■If trailer sway occurs
One or more factors (crosswinds, passing ve hicles, rough roads, etc.) can adversely
affect handling of your vehicle and trailer, causing instability.
●If trailer swaying occurs:
• Firmly grip the steering wh eel. Steer straight ahead.
Do not try to control trailer sway ing by turning the steering wheel.
• Begin releasing the accelerator pedal im mediately but very gradually to reduce
speed.
Do not increase speed. Do not apply vehicle brakes.
If you make no extreme correction with the st eering or brakes, your vehicle and trailer
should stabilize. (if enabled, Trailer Sway Control can also he lp to stabilize the vehicle and
trailer.)
●After the trailer sw aying has stopped:
• Stop in a safe place. Get all occupants out of the vehicle.
• Check the tires of the vehicle and the trailer.
• Check the load in the trailer. Make sure the load has not shifted.
Make sure the tongue weight is appropriate, if possible.
• Check the load in the vehicle.
Make sure the vehicle is not ov erloaded after occupants get in.
If you cannot find any problems, the speed at which trailer swaying occurred is beyond
the limit of your particular vehicle-trailer combination.
Drive at a lower speed to prevent instability. Remember that swaying of the towing vehi-
cle-trailer increases as speed increases.

3904-6. Driving tips
RX350/RX350L_U
WARNING
■Off-road driving precautions
Always observe the following precautions to minimize the risk of death, serious injury
or damage to your vehicle:
●Drive carefully when off the road. Do not ta ke unnecessary risks by driving in danger-
ous places.
●Do not grip the steering wheel spokes when driving off-road. A bad bump could jerk
the wheel and injure your hands. Keep both hands and especially your thumbs on the
outside of the rim.
●Always check your brakes for effectiveness immediately after driving in sand, mud,
water or snow.
●After driving through tall grass, mud, rock , sand, rivers, etc., check that there is no
grass, bush, paper, rags, stone, sand, etc. adhering or trapped on the underbody.
Clear off any such matter from the underbody. If the vehicle is used with these materi-
als trapped or adhering to the underbody, a breakdown or fire could occur.
●When driving off-road or in rugged terrain , do not drive at excessive speeds, jump,
make sharp turns, strike obje cts, etc. This may cause loss of control or vehicle rollover
causing death or serious injury. You are also risking expensive damage to your vehi-
cle’s suspension and chassis.
NOTICE
■To prevent water damage
Take all necessary safety measures to ensure that water damage to the engine or other
components does not occur.
●Water entering the engine air intake will cause severe engine damage.
●Water entering the automatic transmission will cause deterioration in shift quality,
locking up of your transmission accompanied by vibration, and ultimately damage.
●Water can wash the grease from wheel be arings, causing rusting and premature fail-
ure, and may also enter the differential, transmission and transfer (AWD models only)
case, reducing the gear oi l’s lubricating qualities.
■When you drive through water
If driving through water, such as when cro ssing shallow streams, first check the depth of
the water and the bottom of the riverbed for firmness. Drive slowly and avoid deep
water.
■Inspection after off-road driving
●Sand and mud that has accumulated around brake discs may affect braking efficiency
and may damage brake system components.
●Always perform a maintenance inspection afte r each day of off-road driving that has
taken you through rough terrain, sand, mud, or water. For scheduled maintenance
information, refer to the “Warranty and Services Guide/Owner’s Manual Supple-
ment/Scheduled Maintenance”.

5746-5. Using the other interior features
RX350/RX350L_U
■Availability of service
●Lexus Enform Service Connect is available in the contiguous United States, Washing-
ton D.C., and Alaska.
●Lexus Enform Service Connect is not availa ble in Puerto Rico, Canada, and the United
States Virgin Islands.
■Lexus Enform Service Connect Information
Availability of functions of the Lexus Enform Service Connect is dependent on network
reception level.
■Safety information for Le xus Enform Service Connect
Refer to the safety information for Safety Connect: P. 572
LEXUS Enform Service Connect
: If equipped
Lexus Enform Service Connect uses embedded telematics hardware to col-
lect and transmit vehicle data that allows Lexus to provide:
●Vehicle Health Report (VHR)
(Safety Recalls, Service Campaigns, Current Vehicle Alerts, Required
Maintenance, and Vehicle Condition Status)
●Maintenance Notifications
●Vehicle Alert Notifications
For details about this service and how to register, refer to
http://www.lexus.com/enform/
.
The Lexus Enform Service Connect is achieved by using a Data Communica-
tion Module (DCM) built in the vehicle.