2019 LEXUS RX350 air filter

TABLE OF CONTENTS
6
RX350/RX350L_U 7-1. Maintenance and care
Cleaning 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 ............................................. 6957
Maintenance and care 8
When trouble arises

5176-2. Using the air conditioning system and defogger
6
Interior features
RX350/RX350L_U ■
Ventilation and air conditioning odors ●
To let fresh air in, set the air conditioning system to the outside air mode. ●
During use, various odors from inside and outside the vehicle may enter into and accu-
mulate in the air conditioning system. This may then cause odor to be emitted from the
vents. ●
To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to outside air mode prior
to turning the vehicle off.
• The start timing of the blower may be dela yed for a short period of time immediately
after the air conditioning system is started in automatic mode.■
Air conditioning filter
 P. 618 ■
Customization
Some functions can be customized. (  P. 722)
WARNING ■
To prevent the windshield from fogging up ●
Do not use during cool air operation in extremely humid weather. The differ-
ence between the temperature of the outside air and that of the windshield can cause
the outer surface of the windshield to fog up, blocking your vision.
■
To prevent burns ●
Do not touch the rear view mirror surfaces when the outside rear view mirror defog-
gers are on. ●
Do not touch the glass at lower part of the windshield or to the side of the front pillars
when the windshield wiper de-icer is on. (if equipped)
NOTICE ■
To prevent battery discharge
Do not leave the air conditioni ng system on longer than necessary when the engine is
off. ●
Do not place anything on the instrument
panel which may cover th e air outlets. Other-
wise, air flow may be obstructed, preventing
the windshield defoggers from defogging.

575
7Maintenance and care
RX350/RX350L_U 7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ................ 576
Cleaning and protecting
the vehicle interior................... 581
7-2. Maintenance
Maintenance
requirements ............................584
General maintenance..............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

5917-3. Do-it-yourself maintenance
7
Maintenance and care
RX350/RX350L_U * : Vehicles with single-beam headlightsTire inflation pres-
sure (  P. 613) • Tire pressure gauge • Compressed air source
Washer fluid
(  P. 603) • Water or washer fluid containing antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)
WARNING
The engine compartment contains many mechan isms and fluids that may move suddenly,
become hot, or become electrically energize d. 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 cautions 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. 599) ■
Safety glasses
Wear safety glasses to prevent flying or falling material, flui d spray, etc. from getting in
your eyes.
NOTICE ■
If you remove the air cleaner filter
Driving with the air cleaner f ilter removed may cause excessive engine wear due to dirt
in the air. Items Parts and tools

618 7-3. Do-it-yourself maintenance
RX350/RX350L_U Turn the engine switch off.
Open the glove box. Slide off the
damper.
Push in the glove box on the vehicle’s
outer side to disconnect the claws.
Then pull out the glove box and dis-
connect the lower claws.
Remove the cover.Air conditioning filter The air conditioning filter must be ch anged regularly to maintain air condi-
tioning efficiency.
Removal method 1
2
3
4

6197-3. Do-it-yourself maintenance
7
Maintenance and care
RX350/RX350L_U Remove the filter cover.
Unlock the filter cover.
Move the filter cover in the direc-
tion of the arrow, and then pull it
out of the claws.
Remove the filter case. There may be foreign objects on top of
the air conditioning filter.
Remove the air conditioning filter
from the filter case and replace it
with a new one. The “  UP” marks shown on the filter
and the filter case sh ould be pointing up.
■
Checking interval
Inspect and replace the air cond itioning filter according to the maintenance schedule. In
dusty areas or areas with heavy traffic fl ow, early replacement may be required. (For
scheduled maintenance informat ion, please refer to the “Owner’s Manual Supplement”
or “Scheduled Maintenance”.) ■
If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary. ■
Air conditioning filter with deodorizing function
When fragrances are placed in your vehicle, the deodorizing effect may become signifi-
cantly weakened in a short period.
When an air conditioning odor comes out cont inuously, replace the air conditioning filter.5
1
2
6
7

620 7-3. Do-it-yourself maintenance
RX350/RX350L_U NOTICE ■
When using the air conditioning system
Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the system.■
To prevent damage to the filter cover
When moving the filter cover in the direction of
arrow to release the fitting, pay attention not to
apply excessive force to the claws. Otherwise,
the claws may be damaged.

756
RX350/RX350L_U Alphabetical index
Alphabetical index A/C ............................................................503
Air conditioning filter......................... 618
Automatic air conditioning
system ...................................... 503, 518
S-FLOW mode ..................................... 511
ABS (Anti-lock Brake System)....... 378
Warning light ...................................... 654
Adaptive Front-lighting System
(AFS) ...................................................... 253
Adaptive Variable Suspension
System ................................................... 379
AFS (Adaptive Front-lighting
System) .................................................. 253
Air conditioning filter ........................... 618
Air conditioning system
Air conditioning filter......................... 618
Automatic air conditioning
system ...................................... 503, 518
S-FLOW mode ..................................... 511 Airbags .........................................................36
Airbag operating conditions .......... 43
Airbag precautions for your
child.......................................................... 39
Airbag warning light ........................ 654
Correct driving posture .................... 30
Curtain shield airbag
operating conditions ....................... 43
Curtain shield airbag
precautions ............................................ 41
Front passenger occupant
classification system..........................47
General airbag precautions ........... 39
Locations of airbags............................ 36
Modification and disposal of
airbags .....................................................42
Seat cushion airbag ..............................37
Side airbag operating
conditions ............................................. 43
Side airbag precautions .................... 39
Side and curtain shield airbags
operating conditions ....................... 43
Side and curtain shield airbags
precautions .......................................... 39
SRS airbag instructions for
Canadian owners .......................... 740
SRS airbags ............................................. 36A