2016 LEXUS RC200T key battery

4987-3. Do-it-yourself maintenance
RC350_RC300_RC200t_RC F_U (OM24671U)
■Before recharging
When recharging, the battery produces hydrogen gas which is flammable and explosive.
Therefore, observe the following 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 proc edure below to initialize the system.
Shift the shift lever to P.
Open and close either door.
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 disconnected and
reconnected, the vehicle will return the engi ne switch mode to the status it was in
before the battery was disconnected. Make su re to turn off the engine before discon-
necting the battery. Take extra care when connecting the battery if the engine switch
mode prior to the battery be ing disconnected is unknown.
If the system will not start even after mult iple attempts, contact your Lexus dealer.
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5177-3. Do-it-yourself maintenance
7
Maintenance and care
RC350_RC300_RC200t_RC F_U (OM24671U)
●Flathead screwdriver
●Small flathead screwdriver
●Lithium battery CR2032
Take out the mechanical key.
Remove the cover.
To prevent damage to the key, wrap the
tip of the screwdriver with tape.
Remove the depleted battery.
Insert a new battery with the “+” termi-
nal facing up.
Electronic key battery
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
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5187-3. Do-it-yourself maintenance
RC350_RC300_RC200t_RC F_U (OM24671U)
■Use a CR2032 lithium battery
●Batteries can be purchased at your Lexus dealer, local electrical appliance shops or
camera stores.
●Replace only with the same or equivalent type recommended by the manufacturer.
●Dispose of used batteries according to local laws.
■When the card key battery needs to be replaced (if equipped)
The battery for the card key is available only at Lexus dealers. Your Lexus dealer can
replace the battery for you.
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart access system with push-button start and wireless remote control will not
function properly.
●The operational range will be reduced.
WA R N I N G
■Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking. Keep away
from children. Failure to do so could result in death or serious injury.
NOTICE
■For normal operation afte r replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other component inside the remote control.
●Do not bend either of the battery terminals.

531
When trouble arises8
RC350_RC300_RC200t_RC F_U (OM24671U)
8-1. Essential informationEmergency flashers...................532
If your vehicle has to be stopped in an
emergency .................................533 8-2. Steps to take in an emergency
If your vehicle needs to be towed ...........................................534
If you think something is wrong ............................................ 541
Fuel pump shut off system ...... 542
If a warning light turns on or a warning buzzer
sounds.......................................... 543
If a warning message is displayed..................................... 549
If you have a flat tire (vehicles with a spare
tire) ................................................ 570
If you have a flat tire (vehicles with an
emergency tire puncture
repair kit) ....................................584
If the engine will not start ........ 597
If the shift lever cannot be shifted from P............................ 599
If the electronic key does not operate properly ............ 600
If the vehicle battery is discharged .................................604
If your vehicle overheats ........ 608
If the vehicle becomes stuck ...............................................614

5678-2. Steps to take in an emergency
8
When trouble arises
RC350_RC300_RC200t_RC F_U (OM24671U)
OnceCon-
tinuous
An attempt was made to lock the
doors using the smart access system
with push-button start while the
electronic key was still inside the
vehicle.
Retrieve the electronic key
from the vehicle and lock the
doors again.
An attempt was made to lock either
door by opening a door and putting
the inside lock button into the lock
position, then closing the door with
the electronic key still inside the
vehicle.
Retrieve the electronic key
from the vehicle and lock the
doors again.
Once
The electronic key has a low battery.
Replace the electronic key bat-
tery. ( P. 5 1 7 )
Once
The steering lock could not be
released within 3 seconds of the
engine switch being pressed.
 Press the engine switch while
depressing the brake pedal and
moving the steering wheel left
and right.
Once
Indicates a malfunction in the smart
access system with push-button
start
Have the vehicle inspected by
your Lexus dealer.
Interior
buzzerExteriorbuzzerWa r n i n g m e s s a g eDetails/Actions
(Flashes)
(Flashes)
(Flashes)

5978-2. Steps to take in an emergency
8
When trouble arises
RC350_RC300_RC200t_RC F_U (OM24671U)
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●The engine may be flooded.
Try to restart the engine again following correct starting procedures.
(P. 1 9 9 )
●There may be a malfunction in the engine immobilizer system. ( P. 76 )
One of the following may be the cause of the problem:
●The battery may be discharged. ( P. 6 0 4 )
●The battery terminal connections may be loose or corroded.
The engine starting system may be malfun ctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However, an interim
measure is available to start the engine. ( P. 5 9 8 )
If the engine will not start
If the engine will not start even though correct starting procedures are being
followed ( P. 199), consider each of the following points:
The engine will not start even thoug h the starter motor operates nor-
mally.
The starter motor turns over slowly , the interior lights and headlights
are dim, or the horn does not sound or sounds at a low volume.
The starter motor does not turn over

6008-2. Steps to take in an emergency
RC350_RC300_RC200t_RC F_U (OM24671U)
Use the mechanical key (P. 133) in order to perform the following operations:
■Unlocking the door
Insert the mechanical key while
pulling on the driver’s door han-
dle.
Unlocking the door.
Remove the key, return the handle, and then pull the handle again.
If the electronic key does not operate properly
If communication between the electronic key and vehicle is interrupted ( P.
150) or the electronic key cannot be used because the battery is depleted,
the smart access system with push-button start and wireless remote control
cannot be used. In such cases, the doors and trunk can be opened and the
engine can be started by fo llowing the procedure below.
Locking and unlocking the doors and opening the trunk
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6028-2. Steps to take in an emergency
RC350_RC300_RC200t_RC F_U (OM24671U)
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of the
electronic key to the engine switch.
When the electronic key is detected, a
buzzer sounds and the engine switch
will turn to IGNITION ON mode.
When the smart access system with
push-button start is deactivated in cus-
tomization setting, the engine switch will
turn to ACCESSORY mode.
Firmly depress the brake pedal and check that is shown on the multi-
information display.
Press the engine switch.
In the event that the engine still cannot be started, contact your Lexus dealer.
■Stopping the engine
Shift the shift lever to P and press the engine switch as you normally do when stopping
the engine.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the electronic
key battery be replaced immediately when the battery is depleted. ( P. 5 1 7 )
■Changing engine switch modes
Release the brake pedal and press the engine switch in step above.
The engine does not start and modes will be changed each time the switch is pressed.
( P. 200)
■When the electronic key does not work properly
●Make sure that the smart access system wi th push-button start has not been deacti-
vated in the custom ization setting. If it is off, turn the function on.
(Customizable features P. 6 5 1 )
●Check if battery-saving mo de is set. If it is set, cancel the function. ( P. 1 5 0 )
Starting the engine
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