Page 564 of 724

5647-3. Do-it-yourself maintenance
RC200t_RC F_EE(OM24728E)
Remove the depleted battery.
Insert a new battery with the “+” termi-
nal facing up.
■Use a CR2032 lithium battery
●Batteries can be purchased at any authorized Lexus dealer or repairer, or another duly qualified and equipped professional, 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 entry & start system and wireless remote control will not function properly.
●The operational range will be reduced.
■Certification for the key battery
●Replace only with the same or equivalent type recommended by the manufacturer.
●Dispose of used batteries according to the local laws.
4
Page 579 of 724

579
8When trouble arises
RC200t_RC F_EE(OM24728E)
8-1. Essential information
Emergency flashers ................. 580
If your vehicle has to be
stopped in an
emergency.................................. 581
8-2. Steps to take in an
emergency
If your vehicle needs to be
towed ...........................................582
If you think something is
wrong...........................................589
Fuel pump shut off
system ..........................................590
If a warning light turns
on or a warning buzzer
sounds........................................... 591
If a warning message is
displayed .................................... 597
If you have a flat tire
(vehicles with a
spare tire) .................................... 619
If you have a flat tire
(vehicles with an
emergency tire puncture
repair kit) .................................... 633
If the engine will not start ........ 648
If the electronic key does
not operate properly .............650
If the vehicle battery is
discharged ................................. 654
If your vehicle overheats ......... 659
If the vehicle becomes
stuck ............................................. 664
Page 613 of 724
6138-2. Steps to take in an emergency
8
When trouble arises
RC200t_RC F_EE(OM24728E)
Interior buzzerExteriorbuzzerWarning messageDetails/Actions
Con-
tinuous The driver’s door was opened when
the shift lever was not in P and the
engine switch was not turned off.
Shift the shift lever to P.
Con-
tinuousCon-
tinuous
The driver’s door was opened and
closed while the electronic key was
not in the vehicle, the shift lever was
not in P and the engine switch was
not turned off.
Shift the shift lever to P.
Bring the electronic key back
into the vehicle.
OnceCon-
tinuous
An attempt was made to exit the
vehicle with the electronic key and
lock the doors without first turning
the engine switch off when the shift
lever was in P.
Turn the engine switch off and
lock the doors again.
(Flashes)
(Displayed alternately)
(Flashes)
(Displayed alternately)
(Flashes)
Page 614 of 724
6148-2. Steps to take in an emergency
RC200t_RC F_EE(OM24728E)
Once3 times
The electronic key was carried out-
side the vehicle and a door other
than the driver’s door was opened
and closed while the engine switch
was in a mode other than off.
Bring the electronic key back
into the vehicle.
The driver’s door was opened and
closed while the electronic key was
not in the vehicle, the shift lever was
in P and the engine switch was not
turned off.
Turn the engine switch off.
Bring the electronic key back
into the vehicle.
Once
The electronic key is not detected
when an attempt is made to start the
engine.
Start the engine with the elec-
tronic key present.
9 times
An attempt was made to drive when
the electronic key was not inside the
vehicle.
Confirm that the electronic key
is inside the vehicle.
Interior buzzerExteriorbuzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
Page 615 of 724

6158-2. Steps to take in an emergency
8
When trouble arises
RC200t_RC F_EE(OM24728E)
OnceCon- tinuous
An attempt was made to lock the
doors using the smart entry & start system while the electronic key wasstill inside the vehicle.
Retrieve the electronic key from the vehicle and lock thedoors again.
An attempt was made to lock either
door by opening a door and putting the inside lock button into the lockposition, then closing the door by
pulling on the outside door handle with the electronic key still inside thevehicle.
Retrieve the electronic key from the vehicle and lock thedoors again.
An attempt was made to lock the
doors other than using the smart entry & start system while the elec-tronic key was 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. 563)
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.
InteriorbuzzerExteriorbuzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
Page 616 of 724

6168-2. Steps to take in an emergency
RC200t_RC F_EE(OM24728E)
Once
Indicates a malfunction in the smart
entry & start system Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly quali- fied and equipped professional.
Once
• When the doors were unlockedwith the mechanical key and thenthe engine swit ch was pressed,
the electronic key could not be detected in the vehicle.• The electronic key could not be
detected in the vehicle even after the engine switch was pressedtwo consecutive times.
Touch the electronic key to the engine switch while depressingthe brake pedal.
Once
During an engine starting procedurein the event that the electronic key
was not functioning properly ( P. 652), the engine switch was touchedwith the electronic key.
Press the engine switch within 10 seconds of the buzzer sound-ing.
Indicates that: • With the engine switch off, the
doors were unlocked and then the driver’s door was opened andclosed
• The engine switch was turned to ACCESSORY mode withoutstarting the engine
• The shift lever was shifted to P or N from another position with theengine switch in IGNITION ON
mode. Press the engine switch while depressing the brake pedal.
InteriorbuzzerExteriorbuzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
Page 648 of 724

6488-2. Steps to take in an emergency
RC200t_RC F_EE(OM24728E)
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. 247)
●There may be a malfunction in the engine immobilizer system.
( P. 92)
One of the following may be the cause of the problem:
●The battery may be discharged. ( P. 654)
●The battery terminal connections may be loose or corroded.
The engine starting system may be malfunctioning 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. 649)
If the engine will not start
If the engine will not start even though correct starting procedures are being
followed ( P. 247), consider each of the following points:
The engine will not start even though the starter motor operates nor-
mally.
The starter motor turns over slowly, the interior lights and headlights
are dim, or the horn does not so und or sounds at a low volume.
The starter motor does not turn over
Page 650 of 724
6508-2. Steps to take in an emergency
RC200t_RC F_EE(OM24728E)
Use the mechanical key (P. 159) 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.
177) or the electronic key cannot be us ed because the battery is depleted, the
smart entry & start system and wireless remote control cannot be used. In
such cases, the doors and trunk can be opened and the engine can be started
by following the procedure below.
Locking and unlocking the doors and opening the trunk
1
2
3