maintenance LEXUS RX350 2020 Repair Manual

4026-3. Do-it-yourself maintenance
WARNING
■To prevent injury
Before performing any light bulb
replacement procedure, be sure to turn
the engine switch off. Failure to do so
may result in burns from hot components
or a part of your bo dy may get caught on
an operating component, possibly caus-
ing serious injury.
■Replacing light bulbs
●Turn off the lights. Do not attempt to
replace the bulb immediately after
turning off the lights.
The bulbs become very hot and may
cause burns.
●Do not touch the glass portion of the
light bulb with bare hands. When it is
unavoidable to hold the glass portion,
use and hold with a clean dry cloth to
avoid getting moisture and oils on the
bulb.
Also, if the bulb is scratched or
dropped, it may blow out or crack.
●Fully install light bulbs and any parts
used to secure them. Failure to do so
may result in heat damage, fire, or
water entering the headlight unit. This
may damage the headlights or cause
condensation to build up on the lens.
●Do not attempt to repair or disassem-
ble the light bulbs, connectors, electric
circuits or component parts.
Doing so may result in death or serious
injury due to electric shock.
■To prevent damage or fire
●Make sure bulbs are fully seated and
locked.
●Check the wattage of the bulb before
installing to prev ent heat damage.

4217-2. Steps to take in an emergency
7
When trouble arises
WARNING
■If the tire pressure warning light
comes on
Be sure to observe the following precau-
tions.
Failure to do so could cause a loss of
vehicle control and result in death or
serious injury.
●Stop your vehicle in a safe place as
soon as possible. Adjust the tire infla-
tion pressure immediately.
●If the tire pressure warning light comes
on even after tire inflation pressure
adjustment, it is probable that you have
a flat tire. Check the tires. If a tire is flat,
change it with the spare tire and have
the flat tire repaired by the nearest
Lexus dealer.
●Avoid abrupt maneuvering and brak-
ing.
If the vehicle tires deteriorate, you
could lose control of the steering
wheel or the brakes.
■If a blowout or sudden air leakage
should occur
The tire pressure warning system may
not activate immediately.
■Maintenance of the tires
Each tire, including the spare (if pro-
vided), should be checked monthly when
cold and inflated to the inflation pressure
recommended by the vehicle manufac-
turer on the vehicle placard or tire infla-
tion pressure label (tire and load
information label). (I f your vehicle has
tires of a different size than the size indi-
cated on the vehicle placard or tire infla-
tion pressure label [tire and load
information label], yo u should determine
the proper tire infl ation pressure for
those tires.)
As an added safety fe ature, your vehicle
has been equipped with a tire pressure
monitoring system (TPMS-tire pressure
warning system) that illuminates a low
tire pressure telltale (tire pressure warn-
ing light) when one or more of your tires
is significantly under-inflated. Accord-
ingly, when the low ti re pressure telltale
(tire pressure warning light) illuminates,
you should stop and check your tires as
soon as possible, and inflate them to the
proper pressure. Driving on a signifi-
cantly under-inflated tire causes the tire
to overheat and can lead to tire failure.
Under-inflation also reduces fuel effi-
ciency and tire tread life, and may affect
the vehicle’s handling and stopping abil-
ity.
Please note that the TPMS (tire pressure
warning system) is not a substitute for
proper tire maintenance, and it is the
driver’s responsibility to maintain correct
tire pressure, even if under-inflation has
not reached the level to trigger illumina-
tion of the TPMS low tire pressure telltale
(tire pressure warning light).
Your vehicle has also been equipped with
a TPMS (tire pressure warning system)
malfunction indicator to indicate when
the system is not operating properly. The
TPMS (tire pressure warning system)
malfunction indicator is combined with
the low tire pressure telltale (tire pres-
sure warning light) . When the system
detects a malfunction, the telltale will
flash for approximately one minute and
then remain continuously illuminated.
This sequence will continue upon subse-
quent vehicle start-ups as long as the
malfunction exists. When the malfunction
indicator is illuminated, the system may
not be able to detect or signal low tire
pressure as intended.

4227-2. Steps to take in an emergency
WARNING
TPMS (tire pressure warning system)
malfunctions may occur for a variety of
reasons, including the installation of
replacement or alternate tires or wheels
on the vehicle that prevent the TPMS
(tire pressure warning system) from func-
tioning properly. Always check the
TPMS (tire pressure warning system)
malfunction telltale after replacing one
or more tires or wheels on your vehicle to
ensure that the replacement or alternate
tires and wheels allow the TPMS (tire
pressure warning system) to continue to
function properly.
NOTICE
■To ensure the tire pressure warning
system operates properly
Do not install tires wi th different specifi-
cations or makers, as the tire pressure
warning system may not operate prop-
erly.
If a warning message is dis-
played
The multi-information display
shows warnings of system malfunc-
tions, incorrectly performed opera-
tions, and messages that indicate a
need for maintenance. When a
message is shown, perform the cor-
rection procedure appropriate to
the message.
Except F SPORT models:
Master warning light
The master warning light also comes on
or flashes in order to indicate that a mes-
sage is currently be ing displayed on the
multi-information display.
Multi-information display
Follow the instructions of the message
on the multi-information display.
If any of the warning messages are
shown again after the appropriate
actions have been performed, contact
your Lexus dealer.
F SPORT models:
A
B

4247-2. Steps to take in an emergency
In some situations, the master warning light and warning buzzer may not oper-
ate as specified. In this case, follow the instructions displayed in the warning
message.
 If a warning light comes on or flashes at the same time that a warning message is
displayed, take corrective actio n according to the warning light. ( P.413)
*: A buzzer sounds the first time a message is shown on the multi-information display.
■Warning messages
The warning messages explained below
may differ from the actual messages
according to operation conditions and vehi-
cle specifications.
■Warning buzzer
In some cases, the bu zzer may not be heard
due to being in a noisy location or audio
sound.
■If “Shift to P Before Exiting Vehicle” is
displayed
Message is displayed when the driver’s
door is opened withou t turning the engine
switch off with the shift lever in any position
other than P.
Shift the shift lever to P.
■If “Power Turned Off to Save Battery” is
displayed
This message is displayed when the power
was cut off due to the automatic power off
function. The next time the engine is started,
increase the engine speed slightly and
maintain it at that speed for approximately
5 minutes to recharge the battery.
■If “AWD System Overheated Switching
to 2WD Mode” or “AWD System Over-
heated 2WD Mode Engaged” is dis-
played (AWD models)
This message may be displayed when driv-
ing under extremely high load conditions.
Drive the vehicle at low speeds or stop the
vehicle in a safe place with the engine run-
ning until the me ssage is cleared.
If the message is not cleared, have the vehi-
cle inspected by your Lexus dealer.
■If “Headlight System Malfunction Visit
Your Dealer” is displayed
The following systems may be malfunction-
ing. Have the vehicle inspected by your
Lexus dealer immediately.
●The LED headlight system
●AFS (Adaptive Front-lighting System) (if
equipped)
●The automatic headlight leveling system
●Automatic High Beam
■If “Radar Cruise Control Unavailable
See Owner's Manual” is displayed
The dynamic radar cruise control with
full-speed range system is suspended tem-
porarily or until the problem shown in the
message is re solved. (causes and coping
methods: P.209)
Comes onDoes not sound
Indicates a condition, such as malfunction of electri-
cal components, their cond ition, or indicates the
need for maintenance
FlashesDoes not sound
Indicates a situation, such as when an operation has
been performed incorrectly, or indicates how to
perform an operation correctly
Warning buzzer*Warning

4257-2. Steps to take in an emergency
7
When trouble arises
■If “Radar Cruise Control Unavailable” is
displayed
The dynamic radar cruise control with
full-speed range system cannot be used
temporarily. Use the system when it
becomes available again.
■If “Front Camera Unavailable” or “Front
Camera Unavailable See Owner's
Manual” is displayed
The following systems may be suspended
until the problem shown in the message is
resolved. ( P.209, 418)
●PCS (Pre-Collision system)
●LTA (Lane Tracing Assist)
●Automatic High Beam
●RSA (Road Sign Assist) (if equipped)
●Dynamic radar cruise control with
full-speed range
■If “Check Fuel Cap” is displayed (if
equipped)
The fuel tank cap is no t properly installed.
Correctly install the fuel tank cap.
■If “Maintenance Required Soon” is dis-
played (U.S.A. only)
Indicates that all maintenance according to
the driven distance on the maintenance
schedule
* should be performed soon.
Comes on approximately 4500 miles
(7200 km) after the message has been
reset. If necessary, perform maintenance.
Please reset the message after the mainte-
nance is performed. ( P.356)
*: Refer to the separa te “Scheduled Main-
tenance” or “Owner’s Manual Supple-
ment” for the maintenance interval
applicable to your vehicle.
■If “Maintenance Required Visit Your
Dealer” is displayed (U.S.A. only)
Indicates that all maintenance is required to
correspond to the driven distance on the
maintenance schedule
*.
Comes on approximately 5000 miles
(8000 km) after the message has been
reset. (The indicator will not work properly
unless the message ha s been reset.) Per- form the necessary maintenance. Please
reset the message after the maintenance is
performed. (
P.356)
*: Refer to the separate “Scheduled Main-
tenance” or “Owner’s Manual Supple-
ment” for the main tenance interval
applicable to your vehicle.
■If “Oil Maintenance Required Soon” is
displayed
Indicates that the engine oil should be
scheduled to be changed.
Check the engine oil an d change it if neces-
sary. After changing th e engine oil, make
sure to reset the message. ( P.367)
■If “Oil Maintenance Required” is dis-
played
Indicates that the engine oil should be
changed.
Check and change the en gine oil, and oil fil-
ter by your Lexus dealer. After changing the
engine oil, make sure to reset the message.
(  P.367)
■If a message that indicates the need for
visiting your Lexus dealer is displayed
The system or part shown on the
multi-information display is malfunctioning.
Have the vehicle inspected by your Lexus
dealer immediately.
■If a message that indicates the need for
referring to Owner’ s Manual is dis-
played
●“Engine Coolant Temp High” is shown on
the multi-information display, follow the
instructions. ( P.447)
●“Transmission Fluid Temp High” is shown
on the multi-informatio n display, the auto-
matic transmission fluid temperature may
be too high. Immediately stop the vehicle
in a safe place, shif t the shift lever to P
with the engine running and wait until the
message is cleared. If the message is not
cleared, contact your Lexus dealer.
●If the following mess age is shown on the
multi-information display, it may indicate
a malfunction. Have the vehicle inspected
by your Lexus dealer immediately.
• “Access System with Elec. Key Malfunc- tion”

451
8
8
Vehicle specifications
Vehicle specifications
.8-1. SpecificationsMaintenance 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

4528-1. Specifications
8-1.Specifications
*1:RX350
*2:RX350L
*3:Unladen vehicle
*4: For GGL25L-BWZGBA models*9
*5
:Except for GGL25L-BWZGBA models*9
*6
: Vehicles with separate -type second-row seats
*7: Vehicles with bench-type second-row seats
*8: Vehicles with towing package
*9: The model code is indicated on the Certification Label. (P.452)
■Vehicle identification number
The vehicle identification number (VIN) is the legal identifier for your
vehicle. This is the primary identifica-
Maintenance data (fuel, oil level, etc.)
Dimensions and weight
Overall length192.5 in. (4890 mm)*1
196.9 in. (5000 mm)*2
Overall width74.6 in. (1895 mm)
Overall height*367.7 in. (1720 mm)
Wheelbase109.8 in. (2790 mm)
Tread
Front64.4 in. (1635 mm)*1
64.5 in. (1640 mm)*2
Rear64.0 in. (1625 mm)*1
64.1 in. (1630 mm)*2
Vehicle capacity weight
(Occupants + luggage)
1050 lb. (480 kg)*1, 4
920 lb. (420 kg)*1, 5
1140 lb. (520 kg)*2, 6
1235 lb. (560 kg)*2, 7
Trailer Weight Rating*8
(Trailer weight + cargo weight)3500 lb. (1585 kg)
Vehicle identification

4838-3. Initialization
8
Vehicle specifications
8-3.Initialization
*:If equipped
Items to initialize
The following items must be initialized for normal system operation after such
cases as the battery being reconnected, or maintenance being performed on
the vehicle:
List of items to initialize
ItemWhen to initializeReference
Message indicating
maintenance is
required (U.S.A. only)
• After the maintenance is performedP.356
Tire pressure warning
system
• When changing the tire inflation pres- sure by changing traveling speed
• When changing the tire size
• When rotating the tires
P.381
Oil maintenance• After the maintenance is performedP.367
PKSB (Parking Support
Brake)
*• After reconnecting or changing the batteryP.263
Power back door• After reconnecting or changing the batteryP.107

505Alphabetical Index
Dinghy towing................................................. 175
DisplayCenter Display............................................ 292
Dynamic radar cruise control with full-speed range ...................................... 230
Head-up display ........................................... 86
Intuitive parking assist.............................. 247
LTA (Lane Tracing Assist).................... 223
Multi-information display .......................... 79
RCTA .............................................................. 253
Warning message..................................... 422
Distance until next engine oil change .... 78
Do-it-yourself maintenance .................... 357
Door courtesy lights .....................................313 Wattage..........................................................458
Door lock Power back door.......................................... 101
Side doors ........................................................ 97
Smart access system with push-button start ................................................................... 113
Wireless remote control........................... 95
Door pockets ................................................ 320
Doors Automatic door lock ing and unlocking
system ........................................................... 100
Door glasses ..................................................145
Door lock warning buzzer ...................... 98
Open door warning buzzer ................. 100
Outside rear view mirrors ...................... 142
Rear door child-protectors ................... 100
Side doors ........................................................ 97
Drive distance .................................................. 80
Driver’s seat position memory Driving position memory.........................134
Memory recall function ............................136
Power easy access system .....................134
Drive-start control ........................................ 157
Driving Break-in tips ................................................... 157
Correct driving posture ............................ 25
Driving mode select switch .................. 274
Procedures .................................................... 156 Winter drive tips .........................................283
Driving assist system information ............ 83
Driving information display ........................ 80
Driving position memory............................134 Memory recall function............................ 136
Power easy access system .....................134
Driving range ................................................... 80
Dynamic radar cruise control with full-speed range ........................................ 230Warning message ..................................... 237
Dynamic Torque Control AWD system .......................................................................... 278
E
Eco Driving Indicator............................. 81, 90
Eco Driving Indicator Light ..........................81
EDR (Event data recorder) ............................7
Elapsed time ..................................................... 80
Electric Power Steering (EPS) .............. 278 Warning light ................................................ 415
Electronic key .................................................. 94 Battery-saving function.............................. 114
If the electronic key does not operate properly .........................................................441
Replacing the battery .............................. 389
Electronic sunshade Jam protection function ............................. 151
Operation ....................................................... 150
Emergency flashers .................................... 404
Emergency, in case of If a warning buzzer sounds.....................413
If a warning light turns on.........................413
If a warning message is displayed ..... 422
If the battery is discharged .................... 443
If the electronic key does not operate properly .........................................................441
If the engine will not start....................... 438
If the fuel filler do or cannot be opened
......................................................................... 440
If the vehicle is trapped in rising water ......................................................................... 405
If you have a flat tire .................................. 426

506Alphabetical Index
If you lose your keys.................................440
If you think something is wrong .............411
If your vehicle becomes stuck............. 449
If your vehicle has to be stopped in an
emergency ................................................404
If your vehicle needs to be towed ..... 407
If your vehicle overheats ........................ 447
Engine ACCESSORY mode ............................... 179
Compartment .............................................365
Engine switch................................................. 176
Fuel pump shut off system ...................... 412
Hood................................................................ 363
How to start the engine............................ 176
Identification number ............................... 453
If the engine will not start .......................438
If your vehicle has to be stopped in an
emergency ................................................404
Ignition switch (engine switch) ............. 176
Overheating................................................. 447
Tachometer ..................................................... 75
Engine coolant Capacity .........................................................455
Checking ....................................................... 367
Preparing and checking before winter......................................................................... 283
Engine coolant temperature gauge ........75
Engine immobilizer system ........................ 64
Engine oil Capacity ......................................................... 454
Checking .......................................................365
Preparing and checking before winter......................................................................... 283
Warning light ................................................. 414
Engine oil maintenance data .................. 367
Engine switch .................................................. 176 Auto power off function ........................... 179
Changing the engine switch modes.. 179
If your vehicle has to be stopped in an
emergency ................................................404
EPS (Electric Power Steering) .............. 278 Warning light .................................................415 Event data recorder (E
DR) ............................7
F
Flat tire
Tire pressure warning system ............. 373
Vehicles with a spare tire....................... 426
Floor mats .......................................................... 24
Fluid Automatic transmission ......................... 456
Brake ................................................................ 457
Washer ...........................................................370
Fog lights Switch................................................................ 195
Footwell light ...................................................313
Front automatic air conditioning system .......................................................................... 296
Front fog lights Replacing light bulbs ............................... 395
Front passenger footwell hooks ............ 338
Front passenger occupant classification system .............................................................. 39
Front seats Adjustment ...................................................... 122
Cleaning .........................................................353
Correct driving posture ............................ 25
Driving position memory .........................134
Head restraints..............................................137
Memory recall function............................ 136
Power easy access system .....................134
Seat heaters ................................................... 310
Seat position memory ...............................134
Seat ventilators ............................................. 310
Front side marker light Light switch .................................................... 190
Replacing light bulbs ............................... 395
Front side marker lights Replacing light bulbs ............................... 395
Wattage ......................................................... 458
Front turn signal lights Replacing light bulbs ................... 395, 397
Turn signal lever .......................................... 184
Wattage ......................................................... 458