key LEXUS RC300H 2017 Workshop Manual

5588-2. Steps to take in an emergency
RC300h_EE(OM24740E)
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 power 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 power switch was not
turned off.
 Turn the power 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
hybrid system.
 Start the hybrid system with the
electronic 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
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5598-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
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 12-volt battery. Replace the electronic key bat-
tery. ( P. 511)
Once
The steering lock could not be released within 3 seconds of the
power switch being pressed.  Press the power switch while depressing the brake pedal and
moving the steering wheel left and right.
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5608-2. Steps to take in an emergency
RC300h_EE(OM24740E)
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 power switch 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 power switch was pressed twoconsecutive times.
 Touch the electronic key to the power switch while depressingthe brake pedal.
Once
During an hybrid system starting
procedure in the event that the elec- tronic key was not functioning prop-erly ( P. 580), the power switch
was touched with the electronic key.  Press the power switch within 10 seconds of the buzzer sounding.

Indicates that:
• With the power switch off, the doors were unlocked and then the
driver’s door was opened and closed• The power switch was turned to
ACCESSORY mode without starting the hybrid system• The shift lever was shifted to P or
N from another position with the power switch in ON mode. Press the power switch while
depressing the brake pedal.
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5768-2. Steps to take in an emergency
RC300h_EE(OM24740E)
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (P. 580)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( P. 95)
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctioning due to an electrical problem such
as electronic key battery depletion or a blown fuse. However, depending on
the type of malfunction, an interim measure is available to start the hybrid sys-
tem. ( P. 577)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 582)
●The 12-volt battery terminal connections may be loose or corroded.
( P. 481)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the situation.
Check the following and perform the appropriate procedure:
The hybrid system will not start even though the correct starting proce-
dure is being followed. ( P. 215)
The interior lights and headlights are dim, or the horn does not sound or
sounds at a low volume.

5788-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Use the mechanical key (P. 139) 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.
157) or the electronic key cannot be used 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 hybrid system can be
started by following the procedure below.
Locking and unlocking the doors and opening the trunk
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5798-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
■Locking the door
Move the inside lock button to the
lock position.
Close the door while pulling the door handle.
■Opening the trunk
Turn the mechanical key clockwise
to open.
■Key linked functions
*: These settings must be customized at your Lexus dealer or repairer, or another duly
qualified and equipped professional.
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2
Locks both side door
Closes the windows and moon roof (if equipped) (turn and hold)*
Unlocks the door
Opens the windows and moon roof (if equipped) (turn and hold)*
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5808-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of the
electronic key to the power switch.
When the electronic key is detected, a buzzer sounds and the power switch willturn to ON mode.
When the smart entry & start system is deactivated in customization setting, thepower switch will turn to ACCESSORY
mode.
Firmly depress the brake pedal and check that is shown on the multi-
information display.
Press the power switch.
In the event that the hybrid system still cannot be started, contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
Starting the hybrid system
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5818-2. Steps to take in an emergency
8
When trouble arises
RC300h_EE(OM24740E)
■Stopping the hybrid system
Shift the shift lever to P and press the power switch as you normally do when stopping the hybrid system.
■Replacing the key battery
As the above procedure is a temporary measur e, it is recommended that the electronic key battery be replaced immediately when the battery is depleted. ( P. 511)
■Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system. If a door is unlocked using the mechanical key when the alarm system is set, the alarm may be triggered.
■Changing power switch modes
Release the brake pedal and press the power switch in step above. The hybrid system does not start and modes will be changed each time the switch is
pressed. ( P. 216)
■When the electronic key does not work properly
●Make sure that the smart entry & start system has not been deactivated in the
customization setting. If it is off, turn the function on. (Customizable features P. 607)
●Check if battery-saving mode is set. If it is set, cancel the function. (P. 157)
WARNING
■When using the mechanical key and operating the power windows or moon roof
Operate the power window or moon roof after checking to make sure that there is no possibility of any passenger having any of their body parts caught in the window or moon roof.
Also, do not allow children to operate the me chanical key. It is possible for children and other passengers to get caught in the power window or moon roof.
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5828-2. Steps to take in an emergency
RC300h_EE(OM24740E)
If you have a set of jumper (or booster) cables and a second vehicle with a 12-volt
battery, you can jump start your vehicle by following the steps below.
Confirm that the electronic key is
being carried.
When connecting the jumper (or booster) cables, depending on the situa-tion, the alarm may activate and doors
locked. (P. 104)
Open the hood ( P. 471) and fuse
box cover.
Remove the clips.
Push the tabs on either side to
detach the lock and lift the lid off
while pulling the lock plate.
If the 12-volt battery is discharged
The following procedures may be used to start the hybrid system if the 12-volt
battery is discharged.
You can also call any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional.
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2
1
2

5848-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Make sure the “READY” indicator comes on. If the indicator does not come
on, contact any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
Once the hybrid system has started, remove the jumper cables in the exact
reverse order from which they were connected.
Once the hybrid system starts, have the vehicle inspected at any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional as
soon as possible.
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the hybrid system is off.
●Turn off any unnecessary electrical components when the vehicle is running at a low
speed for an extended period, such as in heavy traffic.
■Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even when the vehicle
is not in use, due to natural discharge and the draining effects of certain electrical appli- ances. If the vehicle is left for a long time, the 12-volt battery may discharge, and thehybrid system may be unable to start. (The 12-volt battery recharges automatically while
the hybrid system is operating.)
■When recharging or replacing the 12-volt battery
●In some cases, it may not be possible to unlock the doors using the smart entry & start
system when the 12-volt battery is discharg ed. Use the wireless remote control or the mechanical key to lock or unlock the doors.
●The hybrid system may not start on the first attempt after the 12-volt battery has
recharged but will start normally after the second attempt. This is not a malfunction.
●The power switch mode is memorized by the vehicle. When the 12-volt battery is reconnected, the system will return to the mod e it was in before the 12-volt battery was
discharged. Before disconnecting the 12-v olt battery, turn the power switch off. If you are unsure what mode the power switch was in before the 12-volt battery dis-charged, be especially careful when reconnecting the 12-volt battery.
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