
526 6-5. Using the other interior features
RX350_U_OM48E90U ■
Operation indicator light status
* : Depending on the portable device, the oper ation indicator light may stay illuminated
(orange) after charging has completed.●
If the operation indicator light blinks
If an error is detected, the operation in dicator light will blink (orange). Take the
appropriate measures according to the table below.
■
The wireless charger can be operated when
The engine switch is in ACCESSORY or IGNITION ON mode. ■
Portable devices that can be charged ●
Portable devices compatible with the Qi wi reless charging standard can be charged by
the wireless charger. However, compatibility with all devices which meet the Qi wire-
less charging standard is not guaranteed. ●
The wireless charger is designed to supply low power electricity (5 W or less) to a cel-
lular phone, smartphone, or other portable device. Operation indicator light State
Off The Wireless charger is off
Green (illuminated) Standby (charging is possible)
Charging is complete
*Orange (illuminated) A portable device has been placed on the charging
area (identifying the portable device)
Charging in progress
Operation indicator light Suspected causes Measure
Blinks (orange) at a one
second interval continu-
ously Vehicle to charger com-
munication failure. Contact your Lexus dealer.
Blinks (orange) 3 times
repeatedly A foreign object exists
between the portable
device and charging area. Remove the foreign object.
Portable device is not posi-
tioned properly on the
charging area. Move the portable device
toward the center of the
charging area.
Blinks (orange) 4 times
repeatedly The temperature of the
wireless charger is exces-
sively high. Stop charging immediately
and continue charging
after a while.

5276-5. Using the other interior features
6
Interior features
RX350_U_OM48E90U ■
If a cover or accessory is attached to the portable device
Do not charge a portable device if a cover or accessory which is not Qi compatible is
attached. Depending on the type of cover and/or accessory attached, it may not be pos-
sible to charge the portable device. If the portable device is placed on the charging area
and does not charge, remove the cover and/or accessories. ■
If interference is heard in AM radio broadcasts while charging
Turn off the wireless charger and check if the noise is reduced. If noise is reduced, press
and hold the power supply switch of the wire less charger for 2 seconds. The frequency of
the wireless charger is changed and noise may be reduced. When the frequency is
changed, the operation indicator light will blink (orange) 2 times.■
Charging precautions ●
If the electronic key cannot be detected in the cabin, charging cannot be performed.
When a door is opened and closed, ch arging may be temporarily suspended.●
While charging, the wireless charger and the portable device will become warm. This is
not a malfunction.
If a portable device becomes warm while ch arging and charging stops due to the pro-
tection function of the portable device, wait until the portable device cools down and
charge it again. ■
Sound generated du ring operation
When the power supply switch is turned on or while a portable device is being identified,
operation sounds may be heard. This is not a malfunction. ■
Cleaning the wireless charger
P. 5 6 2 ■
Certification for the wireless charger
FCC Note: This equipment has been tested and found to comply with Part 18 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful inter-
ference in a residential installation.
FCC Caution: Any changes or modification s not expressly approved by the party
responsible for compliance could void the user’s authority to operate this equipment.

5296-5. Using the other interior features
6
Interior features
RX350_U_OM48E90U WA R N I N G ■
Caution while driving
When charging a portable device while driv ing, for safety reasons, the driver should
not operate the portable device. ■
Caution regarding interference with electronic devices
People with implantable card iac pacemakers, cardiac resynchronization therapy pace-
makers or implantable cardioverter defibrilla tors, as well as any other electrical medi-
cal device, should consult their physician about the usage of the wireless charger.
Operations of the wireless charger may have an affect on medical devices. ■
To prevent damage or burns
Observe the following precautions.
Failure to do so may result in the possibility of fire, equipment failure or damage, or
burns due to heat. ●
Do not put any metallic objects between th e charging area and the portable device
while charging. ●
Do not attach metallic objects, such as aluminum stickers, to the charging area.●
Do not cover the wireless charger with a cloth or other object while charging. ●
Do not attempt to charge portable devices which are not compatible with the Qi
wireless charging standard. ●
Do not disassemble, modify or remove the wireless charger. ●
Do not apply force or impact to the wireless charger.

530 6-5. Using the other interior features
RX350_U_OM48E90U NOTICE ■
Conditions in which the wireless charger may not operate correctly
In the following situations, the wireless charger may not operate correctly: ●
When a portable device is fully charged ●
When there is a foreign object between the charging area and portable device●
When a portable device becomes hot while charging ●
When a portable device is placed on the wireless area with its charging surface fac-
ing up ●
When a portable device is not centered on the charging area ●
When the vehicle is near a TV tower, electric power plant, gas station, radio station,
large display, airport or other facility that generates strong radio waves or electrical
noise ●
When the portable device is in contact with, or is covered by any of the following
metallic objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
•Coins
• Metal hand warmers
• Media such as CDs and DVDs ●
When wireless keys (that emit radio waves) other than those of your vehicle are being
used nearby.
If in situations other than above the wirele ss charger does not op erate properly or the
operation indicator light is blinking, the wireless charge r may be malfunctioning. Con-
tact your Lexus dealer. ■
To prevent failure or damage to data ●
Do not bring magnetic cards, such as a credit card, or magnetic recording media,
close to the wireless charger while chargi ng. Otherwise, data may be erased due to
the influence of magnetism.
Additionally, do not bring precision instrume nts such as wrist watches, close to the
wireless charger, as such objects may malfunction. ●
Do not leave portable devices in the cab in. The temperature inside the cabin may
become high when parked in the su n, and cause damage to the device.■
To prevent battery discharge
Do not use the wireless charger for a long period of time with the engine is stopped.

5817-3. Do-it-yourself maintenance
7
Maintenance and care
RX350_U_OM48E90U Check the battery as follows. ■
Battery exterior Make sure that the battery terminals are not corroded and that there are no
loose connections, cracks, or loose clamps.
Te r m i n a l s
Hold-down clamp ■
Before recharging
When recharging, the battery produces hydrogen gas which is flammable and explosive.
Therefore, observe the following precautions before recharging: ●
If recharging with the battery installed on the vehicle, be sure to disconnect the ground
cable. ●
Make sure the power switch on the charger is off when connecting and disconnecting
the charger cables to the battery. ■
After recharging/reconnecting the battery ●
The engine may not start. Follow the pr ocedure below to initialize the system.
Shift the shift lever to P.
Open and close any of the doors.
Restart the engine.●
Unlocking the doors using the smart access system with push-button start may not be
possible immediately after reconnecting the battery. If this happens, use the wireless
remote control or the mechanical key to lock/unlock the doors. ●
Start the engine with the engine switch in ACCESSORY mode. The engine may not
start with the engine switch turned off. However, the engine will operate normally from
the second attempt. ●
The engine switch mode is recorded by the vehicle. If the battery is reconnected, the
vehicle will return the engine switch mode to the status it was in before the battery was
disconnected. Make sure to turn off the power before disconnect the battery. Take
extra care when connecting the battery if the engine switch mode prior to discharge is
unknown.
If the system will not start even after multiple attempts at all methods above, contact your
Lexus dealer.Battery 1
2
1
2
3

582 7-3. Do-it-yourself maintenance
RX350_U_OM48E90U WA R N I N G ■
Chemicals in the battery
Battery contains poisonous and corrosive sulfuric acid and may produce hydrogen gas
which is flammable and explosive. To reduce th e risk of death or se rious injury, take the
following precautions while working on or near the battery: ●
Do not cause sparks by touching the battery terminals with tools. ●
Do not smoke or light a match near the battery. ●
Avoid contact with eyes, skin and clothes. ●
Never inhale or swallow electrolyte. ●
Wear protective safety glasses when working near the battery.●
Keep children away from the battery. ■
Where to safely charge the battery
Always charge the battery in an open area. Do not charge the battery in a garage or
closed room where there is insufficient ventilation. ■
How to recharge the battery
Only perform a slow charge (5 A or less). The battery may explode if charged at a
quicker rate. ■
Emergency measures regarding electrolyte ●
If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immediate medical
attention. If possible, continue to apply water with a sponge or cloth while traveling to
the nearest medical facility. ●
If electrolyte gets on your skin
Wash the affected area thoroughly. If you fe el pain or burning, get medical attention
immediately. ●
If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the clothing and fol-
low the procedure above if necessary. ●
If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Get emergency medica l attention immedi-
ately. ■
When there is insuff icient battery fluid
Do not use if there is insufficient fluid in th e battery. There is a possible danger that the
battery may explode.
NOTICE ■
When recharging the battery
Never recharge the battery while the engine is running. Also, be sure all accessories
are turned off. ■
When adding distilled water
Avoid overfilling. Water spilled during ba ttery recharging may cause corrosion.

634 8-2. Steps to take in an emergency
RX350_U_OM48E90UIf a warning light turns on or a warning buzzer
sounds Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, bu t then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by your Lexus dealer.
Warning light and warning buzzer list Warning light Warning light/Details/Actions(U.S.A.)
(Canada)
Brake system warning light
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
Brake system warning light
Indicates a malfunction in the electric parking brake
Have the vehicle inspected by your Lexus dealer immediately. (If equipped)
Charging system warning light
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. (U.S.A.)
(Canada)
Malfunction indicator lamp
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.
SRS warning light
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. (U.S.A.)
(Canada)
ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system
Have the vehicle inspected by your Lexus dealer immediately.

642 8-2. Steps to take in an emergency
RX350_U_OM48E90U * : A buzzer sounds the first time a message is shown on the multi-information display.
●
If the following messages are shown, there may be a malfunction.
Immediately stop the vehicle in a safe place and contact your Lexus dealer.
Continuing to drive the vehicle may be dangerous.
• “Braking Power Low Stop in a Safe Place See Owner’s Manual”
• “Oil Pressure Low Stop in a Safe Place See Owner’s Manual”
• “Charging System Malfunction See Owner's Manual” ●
If the following message is shown, there may be a malfunction.
Immediately have the vehicle inspected by your Lexus dealer.
• “Access System with Elec. Key Malfunction See Owner’s Manual” ●
If “Engine Coolant Temp High Stop in a Safe Place See Owner’s Manual” is
shown, following the instructions, accordingly. ( P. 668)●
If “Transmission Fluid Temp High See Owner’s Manual” is shown, the auto-
matic transmission fluid temperature may be too high.
Immediately stop the vehicle in a safe place, shift 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. Flashes Sounds Indicates a situation, such as when
damage to the vehicle or danger may
result
Comes
on Does not sound Indicates a condition, such as malfunc-
tion of electrical components, their
condition, or indicates the need for
maintenance
Flashes Does not sound Indicates a situation, such as when an
operation has been performed incor-
rectly, or indicates how to perform an
operation correctly
If a message instructing to refer to the Owner’s Manual is displayed System
warning
light Wa r n i n g b u z z e r
* Wa r n i n g