key Lexus IS300h 2017 Workshop Manual

6048-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
Interior buzzerExteriorbuzzerWarning messageDetails/Actions
Con- tinuous 
The driver’s door was opened when
the shift lever was not in P and the power switch was not turned off.
 Shift the shift lever to P.
Con- tinuousCon-tinuous
The driver’s door was opened andclosed while the electronic key was
not in the vehicle, the shift lever was
not in P and the power switch was not turned off.
 Shift the shift lever to P.
 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.
(Flashes)
(Displayed alternately)
(Flashes)

6058-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
OnceCon-
tinuous
An attempt was made to exit the
vehicle with the electronic key and
lock the doors without first turning the power switch off when the shift
lever was in P.
 Turn the power switch off and lock the doors again.
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.
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
(Displayed alternately)
(Flashes)

6068-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
Con-
tinuous
An attempt was made to lock the
doors using the smart entry & start
system while the electronic key was still inside the vehicle.
 Retrieve the electronic key
from the vehicle and lock the doors again.
OnceCon-
tinuous
An attempt was made to lock either
front door by opening a door and
putting the inside lock button into the lock position, then closing the
door by pulling on the outside door
handle 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. 549)
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.
Interior buzzerExteriorbuzzerWarning messageDetails/Actions
(Vehicles with the entry function)
(Flashes)

6078-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
Once
• When the doors were unlocked
with the mechanical key and then
the 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 two
consecutive times.  Touch the electronic key to the
power switch while depressing
the brake pedal.
Once
During a hybrid system starting pro- cedure in the event that the elec-
tronic key was not functioning
properly ( P. 629), the power switch was touched with the elec-
tronic 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; or
• The shift lever was shifted to P
from another position with the power switch in ON mode.
 Press the power switch while
depressing the brake pedal.
Interior buzzerExteriorbuzzerWarning messageDetails/Actions

6268-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (P. 629)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( P. 86)
●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 meas ure is available to start the hybrid sys-
tem. ( P. 627)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 631)
●The 12-volt battery terminal connections may be loose or corroded.
( P. 522)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the situation.
Check the following and perfor m the appropriate procedure:
The hybrid system will not start even though the correct starting proce-
dure is being followed. ( P. 219)
The interior lights and headlights are dim, or the horn does not sound or
sounds at a low volume.

6288-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
■Doors
Use the mechanical key ( P. 139)
in order to perform the following
operations:
Locks all the doors
Closes the windows and moon
roof (turn and hold)*
Unlocks all the doors
Opens the windows and moon roof (turn and hold)*
*: This setting must be customized at any authorized Lexus retailer or Lexus autho-
rized repairer, or an y reliable repairer.
■Trunk
Turn the mechanical key clockwise
to open.
If the electronic key does not operate properly
If communication between the electronic key and vehicle is interrupted ( P.
159) 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 hybrid system can be
started by following the procedure below.
Locking and unlocking the doors, unlocking the trunk and key linked
functions
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6298-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
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 th e power switch will
turn to ON mode.
When the smart entry & start system is deactivated in custom ization setting, the
power 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 retailer or Lexus authorized repairer, or any reliable repairer.
Starting the hybrid system
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6308-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
■Stopping the hybrid system
Shift the shift lever to P and pr ess the power switch as you normally do when stopping the
hybrid system.
■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. 549)
■Alarm (if equipped)
Using the mechanical key to lock th e 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. 220)
■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. 657)
●Check if battery-saving mode is set. If it is set, cancel the function. (P. 158)
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 op erate the mechanical key. It is possible for children and other passengers to get caught in the power window or moon roof.
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6318-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
If you have a set of jumper (or booster) cables and a second vehicle with a 12-volt
battery, you can jump start your ve hicle 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. 94)
Open the hood ( P. 513) 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 retailer or Lexus authorized repairer,
or any reliable repairer.
1
2
1
2

6338-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
Maintain the engine speed of the second vehicle and start the hybrid system
of your vehicle by turning the power switch to ON mode.
Make sure the “READY” indicator comes on. If the indicator does not come
on, contact any authorized Lexus retailer or Lexus authorized repairer, or any
reliable repairer.
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 retailer or Lexus authorized repair er, or any reliable repairer 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 componen ts 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 w ill 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 the hybrid system may be unable to start. (The 12-volt battery recharges automatically while
the hybrid system is operating.)
■When recharging or repl acing 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 discharged. 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 retu rn to the mode it was in before the 12-volt battery was
discharged. Before disconnecting the 12-vol t 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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