2017 Lexus IS300h battery

6018-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
Indicates that the EV drive mode is not available*The reason the EV drive mode is not available (the
vehicle is idling, hybrid battery [traction battery]
charge is low, sp eed is higher than the EV drive mode operating speed range, accelerator pedal is
depressed too much) may be displayed.
A buzzer also sounds.  Use the EV drive mode when it becomes available.
Warning messageDetails/Actions

6028-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
*: For the EV drive mode operating conditions: P. 224
Indicates that the EV drive mode has been automatically
canceled*
The reason the EV drive mode is not available (the hybrid battery [traction batter y] charge is low, speed is
higher than the EV drive mode operating speed
range, accelerator pedal is depressed too much) may be displayed.
A buzzer also sounds.
 Drive the vehicle for a while.
Warning messageDetails/Actions
(Except F SPORT models) (F SPORT models) (Flashes) (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)

6088-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
Once
The power switch has been turned off with the shift lever in a position
other than P.
 Shift the shift lever to P.
Once
After the power switch has been turned off with the shift lever in a
position other than P, the shift lever
has been shifted to P.  Turn the power switch off.

Power was turned off due to the
automatic power off function.
 Next time when starting the hybrid system, increase the
engine speed slightly and main-
tain that level for approximately 5 minutes to recharge the 12-
volt battery.
Con-
tinuous
Indicates that the hybrid system was
stopped in an emergency while driv- ing
 To restart the hybrid system,
shift the shift lever to N and turn the power switch to ON mode.*
Once
Indicates that the power switch has
been pressed while driving  Except when emergency stop-
ping of the vehicle is needed,
immediately release the power switch.
InteriorbuzzerExteriorbuzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Flashes)

6138-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
Remove the 12-volt battery cover.
Remove the band and take out the
emergency tire puncture repair kit.
Taking out the emergency tire puncture repair kit
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2

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.

6278-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. (P. 631)
●One or both of the 12-volt battery terminals may be disconnected.
( P. 522)
Contact any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer if the problem canno t be repaired, or if repair procedures are unknown.
When the hybrid system does not start, the following steps can be used as an
interim measure to start the hybrid system if the power switch is functioning nor-
mally.
Do not use this starting procedur e except in cases of emergency.
Set the parking brake.
Shift the shift lever to P.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for ab out 15 seconds while depressing the
brake pedal firmly.
Even if the hybrid system can be starte d using the above steps, the system may
be malfunctioning. Have the vehicle insp ected by any authorized Lexus retailer
or Lexus authorized repairer , or any reliable repairer.
The interior lights and headlights do not turn on, or the horn does not
sound.
Emergency start function
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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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