2016 LEXUS RX350 key battery

TABLE OF CONTENTS
6
RX350_U_OM48E90U 7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ................ 556
Cleaning and protecting
the vehicle inte rior.................... 561
7-2. Maintenance
Maintenance
requirements ............................ 564
General maintenance.............. 566
Emission inspection and
maintenance (I/M)
programs .................................... 569
7-3. Do-it-yourself
maintenance
Do-it-yourself service
precautions................................ 570
Hood ................................................572
Positioning a floor jack..............573
Engine compartment ................ 574
Tires.................................................. 584
Tire inflation pressure ............... 593
Wheels ........................................... 596
Air conditioning filter ............... 598
Windshield wiper inserts ......... 601
Electronic key battery.............. 603
Checking and replacing
fuses.............................................. 605
Headlight aim ..............................608
Light bulbs ......................................610 8-1. Essential information
Emergency flashers ...................624
If your vehicle has to be
stopped in an
emergency ................................ 625
8-2. Steps to take in an
emergency
If your vehicle needs to
be towed ......................................626
If you think something is
wrong........................................... 632
Fuel pump shut off
system .......................................... 633
If a warning light turns
on or a warning buzzer
sounds ......................................... 634
If a warning message is
displayed ...................................... 641
If you have a flat tire .................. 646
If the engine will not start ........ 658
If the shift lever cannot be
shifted from P ........................... 660
If the electronic key does
not operate properly ............... 661
If the vehicle battery is
discharged ................................. 665
If your vehicle overheats ......... 668
If the vehicle becomes
stuck ............................................... 6717
Maintenance and care 8
When trouble arises

1213-1. Key information
3
Operation of each component
RX350_U_OM48E90U To take out the mechanical key, push
the release button and take the key out. The mechanical key can only be
inserted in one direction, as the key only
has grooves on one side. If the key can-
not be inserted in a lock cylinder, turn it
over and re-attempt to insert it.
After using the mechanical key, store it
in the electronic key. Carry the mechan-
ical key together with the electronic key.
If the electronic key battery is depleted
or the entry function does not operate
properly, you will need the mechanical
key. (  P. 6 6 1 )■
Panic mode
■
When required to leave the vehicle’s key with a parking attendant
Lock the glove box as circumstances demand. (  P. 5 1 3 )
Remove the mechanical key for your own use and provide the attendant with the elec-
tronic key only. ■
If you lose your mechanical keys
New genuine mechanical keys can be made by your Lexus dealer using another
mechanical key and the key number stamped on your key number plate. Keep the plate
in a safe place such as your wallet, not in the vehicle.■
When riding in an aircraft
When bringing an electronic key onto an aircraft, make sure you do not press any but-
tons on the electronic key while inside the airc raft cabin. If you are carrying an electronic
key in your bag, etc., ensure that the butt ons are not likely to be pressed accidentally.
Pressing a button may cause the electronic key to emit radio waves that could interfere
with the operation of the aircraft.Using the mechanical key
When is pressed for longer than about
one second, an alarm will sound intermittently
and the vehicle lights will flash to deter any per-
son from trying to break into or damage your
vehicle.
To stop the alarm, press any button on the elec-
tronic key.

122 3-1. Key information
RX350_U_OM48E90U ■
Electronic key battery depletion ●
The standard battery life is 1 to 2 years. ●
If the battery becomes low, an alarm will soun d in the cabin when th e engine is stopped.
(  P. 6 0 3 ) ●
As the electronic key always receives ra dio waves, the battery will become depleted
even if the electronic key is not used. The following symptoms indicate that the elec-
tronic key battery may be depleted. Replace the battery when necessary. (  P. 6 0 3 )
• The smart access system with push-button start or the wireless remote control does
not operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on. ●
To avoid serious deterioration, do not leave the electronic key within 3 ft. (1 m) of the
following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
• Induction cookers
• Table lamps ■
Replacing the battery
 P. 6 0 3 ■
Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask your Lexus
dealer for details. ■
If a wrong key is used
The key cylinder rotates freely, isolated from the internal mechanism.

1253-2. Opening, closing and locking the doors
3
Operation of each component
RX350_U_OM48E90U ■
Operation signals
Doors:
A buzzer sounds and the emergency flashers flash to indicate that the doors have been
locked/unlocked. (Locked: Once; Unlocked: Twice)
Windows and moon roof or panoramic moon roof:
A buzzer sounds. ■
Security feature
If a door is not opened within approximately 60 seconds after the vehicle is unlocked, the
security feature automatically locks the vehicle again. ■
When the door cannot be locked by the lock sensor on the surface of the door handle
■
Door lock buzzer
If an attempt to lock the doors is made when a door is not fully closed, a buzzer sounds
continuously for 5 seconds. Fully close the door to stop the buzzer, and lock the vehicle
once more. ■
Setting the alarm
Locking the doors will set the alarm system. (  P. 76 )■
If the smart access system with push-butto n start or the wireless remote control does
not operate properly ●
Use the mechanical key to lock and unlock the doors. (  P. 6 6 1 )●
Replace the key battery with a new one if it is depleted. (  P. 6 0 3 )When the door cannot be locked even if the
lock sensor on the surfac e of the door handle is
touched by a finger, touch the lock sensor with
the palm.
When gloves are being worn, remove the
gloves.

138 3-2. Opening, closing and locking the doors
RX350_U_OM48E90U ■
Close & lock function
When the power back door is open, this fu nction closes the power back door and then
locks all of the doors simultaneously.
Performing the following procedure will lock all of the doors when the power back door
is completely closed.
Close all of the doors except the power back door.
While carrying an electronic key, press the
switch on the lower part of the
power back door (  P. 1 3 3 ) t w i c e .
A different buzzer than the normal one will sound and then the power back door will
begin closing automatically. When the power ba ck door is closed, all of the doors will
lock simultaneously and operation signals wi ll indicate that all of the doors have been
locked.
To enable this function, the following conditions must be met: ●
The most recent power back door operation was an automatic opening operation and
the power back door is stopped. ●
No electronic keys for your vehicle are in the vehicle. ■
When reconnecting the battery
To enable the power back door to operate pr operly, close the power back door manually.■
Jam protection function
■
Returning the power back door open ing position to the default settingSensors are installed in th e right and left sides of
the power back door. When the door is auto-
matically closing and the sensors are pushed
due to an object being caught, etc., the jam pro-
tection function will operate.
From that position the door will automatically
move a little in the opposite direction and then
the function will stop.
Press and hold the switch on the lower
part of the power back door for 7 seconds.
A buzzer will sound twice. The next time the
power back door is open ed, it will op en to the
default position. 1
2

1473-2. Opening, closing and locking the doors
3
Operation of each component
RX350_U_OM48E90U ■
Alarms and warning messages
A combination of exterior and interior alarms as well as warning messages shown on the
multi-information display are used to prevent theft of the vehicle and accidents resulting
from erroneous operation. Take appropriate measures in response to any warning mes-
sage on the multi-information display. (  P. 6 4 1 )
The following table describes circumstance s and correction procedures when only
alarms are sounded.
■
If a warning message is displayed indicating that there is a malf unction in the smart
access system with push-button start
 P. 6 4 1 ■
Battery-saving function
The battery-saving function will be activated in order to prevent the electronic key bat-
tery and the battery from being discharged wh ile the vehicle is not in operation for a long
time. ●
In the following situations, the smart access system with push-button start may take
some time to unlock the doors.
• The electronic key has been left in an area of approximately 6 ft. (2 m) of the outside
of the vehicle for 10 minutes or longer.
• The smart access system with push-butto n start has not been used for 5 days or
longer. ●
If the smart access system with push-butto n start has not been used for 14 days or
longer, the doors cannot be unlocked at any doors except the driver’s door. In this case,
take hold of the driver’s door handle, or us e the wireless remote control or the mechan-
ical key, to unlock the doors. Alarm Situation Correction procedure
Exterior alarm
sounds once for 5
seconds An attempt was made to lock
the vehicle while a door was
open. Close all of the doors and
lock the doors again.
Interior alarm pings
repeatedly The engine switch was turned to
ACCESSORY mode while the
driver’s door was open (The
driver’s door was opened when
the engine switch was in
ACCESSORY mode). Turn the engine switch off
and close the driver’s door.

148 3-2. Opening, closing and locking the doors
RX350_U_OM48E90U ■
Electronic Key battery-Saving Function
When battery-saving mode is set, battery depletion is minimized by stopping the elec-
tronic key from receiving radio waves.
■
Conditions affe cting operation
The smart access system with push-button start, wireless remote control and engine
immobilizer system use weak radio waves. In the following situatio ns, the communication
between the electronic key and the vehicle ma y be affected, preventing the smart access
system with push-button start, wireless remote control and engine immobilizer system
from operating properly. (Ways of coping:  P. 6 6 1 )●
When the electronic key battery is depleted ●
Near a TV tower, electric powe r plant, gas station, radio stat ion, large display, airport or
other facility that generates strong radio waves or electrical noise ●
When the electronic key is in contact wi th, or is covered by the following metallic
objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
•Coins
•Hand warmers made of metal
• Media such as CDs and DVDs ●
When other wireless keys (that emit radio waves) are being used nearby ●
When carrying the electronic key together with the following devices that emit radio
waves
• Portable radio, cellular phone, cordless phone or other wireless communication
devices
• Another vehicle’s electronic key, another el ectronic key of your vehicle, or a wireless
key that emits radio waves
• Personal computers or person al digital assistants (PDAs)
• Digital audio players
• Portable game systems ●
If window tint with a metallic content or me tallic objects are attached to the rear win-
dow ●
When the electronic key is placed near a battery charger or electronic devicesPress twice while pressing and holding .
Confirm that the electronic key indicator flashes
4 times.
While the battery-saving mode is set, the smart
access system with push-button start cannot be
used. To cancel the function, press any of the
electronic key buttons.

1493-2. Opening, closing and locking the doors
3
Operation of each component
RX350_U_OM48E90U ■
Note for the entry function ●
Even when the electronic key is within the effective range (detection areas), the system
may not operate properly in the following cases:
• The electronic key is too close to the window or outside door handle, near the
ground, or in a high place when the doors are locked or unlocked.
• The electronic key is near the ground or in a high place, or too close to the rear
bumper center when the back door is opened.
• The electronic key is on the instrument pa nel, luggage compartment, floor, or in the
door pockets or glove box when the engine is started or engine switch modes are
changed. ●
Do not leave the electronic key on top of th e instrument panel or near the door pockets
when exiting the vehicle. Depending on the radio wave reception conditions, it may be
detected by the antenna outs ide the cabin and the door will become lockable from the
outside, possibly trapping the el ectronic key inside the vehicle.●
As long as the electronic key is within the effective range, the doors may be locked or
unlocked by anyone. ●
Even if the electronic key is not inside the vehicle, it may be possible to start the engine
if the electronic key is near the window. ●
The doors may unlock if a large amount of wa ter splashes on the door handle, such as in
the rain or in a car wash when the electronic key is within the effective range. (The door
will automatically be locked after approximately 60 seconds if the doors are not
opened and closed.) ●
If the wireless remote control is used to lo ck the doors when the electronic key is near
the vehicle, there is a possibility that the door may not be unlocked by the entry func-
tion. (Use the wireless remote control to unlock the doors.) ●
Touching the door lock sensor while wearin g gloves may delay or prevent lock opera-
tion. Remove the gloves and touch the lock sensor again. ●
When the lock operation is performed using the lock sensor, recognition signals will be
shown up to two consecutive times. After this, no recognition signals will be given.
*●
If the door handle becomes wet while the el ectronic key is within the effective range,
the door may lock and unlock repeatedly. In that case, follow the following correction
procedures to wash the vehicle:
• Place the electronic key in a location 6 ft. (2 m) or more away from the vehicle. (Take
care to ensure that the key is not stolen.)
• Set the electronic key to battery-saving mode to disable the smart access system
with push-button start. (  P. 1 4 8 )●
If the electronic key is insi de the vehicle and a door handle becomes wet during a car
wash, a message may be shown on the mult i-information display and a buzzer will
sound outside the vehicle. To turn off the alarm, lock all the doors. ●
The lock sensor may not work properly if it comes into contact with ice, snow, mud, etc.
Clean the lock sensor and attempt to operate it again. ●
A sudden approach to the effective range or door handle may prevent the doors from
being unlocked. In this case, return the door handle to the original position and check
that the doors unlock before pulling the door handle again.●
If there is another electronic key in the detection area, it may take slightly longer to
unlock the doors after the door handle is gripped.