2019 LEXUS RX350 battery

562 6-5. Using the other interior features
RX350/RX350L_U Press and hold the 2 outside buttons for
10 seconds until the HomeLink ®

indi-
cator light changes from continuously
lit (orange) to rapidly flashing (green). If you sell your vehicle, be sure to erase
the programs stored in the HomeLink ®
memory. ■
Codes stored in the HomeLink ®
memory●
The registered codes are not erased even if the battery cabl e is disconnected.●
If learning failed when registerin g a different code to a HomeLink ®
button that already
has a code registered to it, the alread y registered code will not be erased.■
Before programming ●
Install a new battery in the transmitter. ●
The battery side of the transmitter must be pointed away from the HomeLink ®
.■
Certification for the garage door opener 
For vehicles sold in the U.S.A.Erasing the entire HomeLink ®
memory (all three codes)

566 6-5. Using the other interior features
RX350/RX350L_U ■
Circling calibration
Stop the vehicle in a place where it is safe to drive in a circle.
Press and hold the button for 9
seconds. “C” appears on the compass display.
Drive the vehicle at 5 mph (8 km/h)
or less in a circle until a direction is
displayed. If there is not enough space to drive
in a circle, drive around the block
until a direction is displayed.■
Conditions unfavorable to correct operation
The compass may not show the correct di rection in the follo wing conditions:●
The vehicle is stopped immediately after turning. ●
The vehicle is on an inclined surface. ●
The vehicle is in a place where the earth’s magnetic field is subject to interference by
artificial magnetic fields (underground car park/parking lot, under a steel tower,
between buildings, roof car park/parking lot, near an intersection, near a large vehicle,
etc.). ●
The vehicle has become magnetized.
(There is a magnet or metal object near the inside rear view mirror.)●
The battery has been disconnected. ●
A door is open. 1
2
3

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

5777-1. Maintenance and care
7
Maintenance and care
RX350/RX350L_U ■
Note for a smart access system with push-button start ●
If the door handle becomes wet while the el ectronic key is within the effective range,
the door may lock and unlock repeatedly. Place the key in a position 6 ft. (2 m) or more
separate from the vehicle while the vehicle is being washed. (Take care to ensure that
the key is not stolen.) ●
If the electronic key is inside the vehicle and a door handle becomes wet during a car
wash, a buzzer will sound outside the vehicle. To turn off the alarm, lock all the doors.●
Set the electronic key to battery-saving mo de to disable the sm art access system with
push-button start. (  P. 147)■
Aluminum wheels ●
Remove any dirt immediately by using a neutral detergent. ●
Wash detergent off with water immediately after use. ●
To protect the paint from damage, make sure to observe the following precautions.
• 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. ■
Front side windows water-repellent coating ●
The following precautions can extend the effectiveness of the water-repellent coating.
• Remove any dirt, etc. from the front side windows regularly.
• Do not allow dirt and dust to accumulate on the windows for a long period.
Clean the windows with a soft, damp cloth as soon as possible.
• Do not use wax or glass cleaners that co ntain abrasives when cleaning the windows.
• Do not use any metallic objects to remove condensation build up.●
When the water-repellent performance has become insufficient, the coating can be
repaired. Contact your Lexus dealer.

5857-2. Maintenance
7
Maintenance and care
RX350/RX350L_U ■
Repair and replacement
It is recommended that genuine Lexus parts be used for repairs to ensure performance
of each system. If non-Lexus parts are used in replacement or if a repair shop other than
a Lexus dealer performs repairs, confirm the warranty coverage.■
Resetting the message indicating main tenance is required (U.S.A. only)
After the required maintenanc e is preformed according to the maintenance schedule,
please reset the message.
To reset the message, follow the procedures described below:
Select on the multi-information display.(  P. 97)
Press or of the meter control swit ch, select the “Scheduled Maintenance”
screen and then press and hold the .
Select the “Yes” and push .
A message will be displayed on the multi- information display when the reset proce-
dure has been completed. ■
Allow inspection and repairs to be performed by a Lexus dealer●
Lexus technicians are well-trained specialists and are kept up to date with the latest ser-
vice information. They are well informed about the operat ion of all systems on your
vehicle. ●
Keep a copy of the repair order. It proves that the maintenance that has been per-
formed is under warranty co verage. If any problem should arise while your vehicle is
under warranty, your Lexus dealer will promptly take care of it.
WARNING ■
If your vehicle is not properly maintained
Improper maintenance could result in seriou s damage to the vehicle and possible seri-
ous injury or death. ■
Handling of the battery ●
Engine exhaust, some of its constituents, and a wide variety of automobile compo-
nents contain or emit chemicals known to th e State of California to cause cancer and
birth defects and other reproductive ha rm. Work in a well ventilated area.●
Oils, fuels and fluids contained in vehicles as well as waste produced by component
wear contain or emit chemicals known to the State of California to cause cancer and
birth defects or other reproductive harm. Avoid exposure and wash any affected area
immediately. ●
Battery posts, terminals and related acce ssories contain lead and lead compounds
which are known to cause brain damage . Wash your hands after handling. (  P. 601)1
2
3
4

586 7-2. Maintenance
RX350/RX350L_UGeneral maintenance Listed below are the general maintenanc e items that should be performed at
the intervals specified in the “Warranty and Service Guide” or “Owner’s
Manual Supplement”. It is recommende d that any problem you notice should
be brought to the attention of your Lexu s dealer or qualified service shop for
advice.
Engine compartment Items Check points
Battery Check the connections. (  P. 601)
Brake fluid Is the brake fluid at the correct level? (  P. 600)
Engine coolant Is the engine coolant at the correct level? (  P. 598)
Engine oil Is the engine oil at the correct level? (  P. 595)
Exhaust system There should not be any fumes or strange sounds.
Radiator/condenser The radiator and condenser should be free from for-
eign objects. (  P. 599)
Washer fluid Is there sufficient washer fluid? (  P. 603)

5897-2. Maintenance
7
Maintenance and care
RX350/RX350L_U The OBD system determines that a problem exists somewhere in the emission
control system. Your vehicle may not pass the I/M test and may need to be
repaired. Contact your Lexus dealer to service the vehicle. ●
When the battery is disconnected or discharged
Readiness codes that are set duri ng ordinary driving are erased.
Also, depending on your driving habits , the readiness codes may not be com-
pletely set. ●
When the fuel tank cap is loose
The malfunction indicator lamp comes on indicating a temporary malfunction
and your vehicle may not pass the I/M test.
The error code in the OBD system will not be cleared unless the vehicle is driven
40 or more times.
Contact your Lexus dealer to pr epare the vehicle for re-testing.Emission inspection and maintenance (I/M)
programs Some states have vehicle emission in spection programs which include OBD
(On Board Diagnostics) checks. The OBD system monitors the operation of
the emission control system.
If the malfunction indicator lamp comes on
Your vehicle may not pass the I/M te st in the following situations:
When the malfunction indicator lamp still remains on after several driv-
ing trips
If your vehicle does not pass the I/M test

590
RX350/RX350L_U 7-3. Do-it-yourself maintenance
Do-it-yourself service precautions If you perform maintenance by yourself, be sure to follow the correct proce-
dure as given in these sections. Items Parts and tools
Battery condition
(  P. 601) •Warm water • Baking soda •Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
(  P. 600) • FMVSS No.116 DOT 3 or SAE J1703 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant level
(  P. 598) • “Toyota Super Long Life Coolan t” or a similar high quality
ethylene glycol-based non-silicate, non-amine, non-nitrite
and non-borate coolant with long-life hybrid organic acid
technology
For the U.S.A.:
“Toyota Super Long Life Coolant” is pre-mixed with 50%
coolant and 50% deionized water.
For Canada:
“Toyota Super Long Life Cool ant” is pre-mixed with 55%
coolant and 45% deionized water.
• Funnel (used only for adding engine coolant)
Engine oil level
(  P. 595) • “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses (  P. 625) • Fuse with same amperage rating as original
Headlight aim
*(  P. 628) • Phillips-head screwdriver
Light bulbs
(  P. 630) • Bulb with same number and wattage rating as original
• Flathead screwdriver •Wrench
Radiator and con-
denser (  P. 599) 