2014 Lexus IS300h battery

5128-2. Steps to take in an emergency
IS300h_EE(OM53C61E)
(If equipped)
Indicates that a Lexus parking assist-sensor is dirty or
covered with ice
A buzzer also sounds.
→Clean the sensor.
Indicates that the accelerator pedal is depressed while
the shift position is in N
A buzzer also sounds.
→Release the accelerator pedal and shift the shift
lever to D, S or R.
Indicates that the hybrid battery (traction battery) power
has dropped because a long period of time has elapsed
after shifting the shift lever to N
A buzzer also sounds.
→Restart the hybrid system when starting the vehicle.
Indicates a malfunction in the hybrid system
A buzzer also sounds.
→Immediately stop the vehicle in a safe place and
contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Indicates that the hybrid battery (traction battery) is low
A buzzer also sounds.
→When stopping the vehicle for a long period of time,
shift the shift lever to P. The hybrid battery (traction
battery) cannot be charged with the shift lever in N.
Wa r n i n g m e s s a g eDetails/Actions
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5178-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53C61E)
Indicates a malfunction in:
• The automatic headlight leveling system; or
• The Automatic High Beam system (if equipped)
• The LED headlight system (if equipped)
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that the accelerator and brake pedal are being
depressed simultaneously
→Release the accelerator or brake pedal.
Indicates that the cooling performance of the hybrid bat-
tery (traction battery) has dropped
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that the washer fluid level is low
→Add washer fluid.
Indicates that remaining fuel is approximately 10 L (2.6
gal., 2.2 Imp. gal.) or less
→Refuel the vehicle.
Indicates that the TRC (Traction Control) system has
been deactivated
→Tu r n t h e T R C o n . (→P. 288)
(If equipped)
Indicates that all maintenance according to the driven
distance on the maintenance schedule
*1 should be per-
formed soon.
→If necessary, perform maintenance.
Wa r n i n g m e s s a g eDetails/Actions
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5198-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53C61E)
*1: Refer to the separate “Lexus Service Booklet” or “Lexus Warranty Booklet” for the
maintenance interval applicable to your vehicle.
*2: For the EV drive mode operating conditions: →P. 2 1 4
Indicates that the EV drive mode is not available*2
The reason the EV drive mode is not available (the
vehicle is idling, hybrid battery [traction battery]
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.
→Use the EV drive mode when it becomes available.
Indicates that the EV drive mode has been automatically
canceled
*2
The reason the EV drive mode is not available (the
hybrid battery [traction battery] 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.
Wa r n i n g m e s s a g eDetails/Actions
(Except F
SPORT models)(F SPORT
models)
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5238-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53C61E)
Once
The electronic key has a low battery.
→Replace the electronic key bat-
tery. (→P. 4 7 1 )
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.
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 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. 5 4 5 ) , t h e p o w e r
switch was touched with the elec-
tronic key.
→Press the power switch within 10
seconds of the buzzer sounding.
Interior
buzzerExteriorbuzzerWarning messageDetails/Actions
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5248-2. Steps to take in an emergency
IS300h_EE(OM53C61E)

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.
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.
→Tu r n t h e p o w e r s w i t c h o f f .

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.
*
Interior
buzzerExteriorbuzzerWarning messageDetails/Actions
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5288-2. Steps to take in an emergency
IS300h_EE(OM53C61E)
Remove the 12-volt battery cover.
Remove the band and take out the
emergency tire puncture repair kit.
Check the degree of the tire damage.
A tire should only be repaired with the
emergency tire puncture repair kit if
the damage is caused by a nail or screw
passing through the tire tread.
• Do not remove the nail or screw
from the tire. Removing the object
may widen the opening and disen-
able emergency repair with the kit.
• To avoid sealant leakage, move the vehicle until the area of the puncture, if
known, is positioned at the top of the tire.
Taking out the emergency tire puncture repair kit
1
2
Before performing emergency repair
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5418-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53C61E)
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (→P. 545)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. (→P. 9 0 )
●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. 5 4 2 )
One of the following may be the cause of the problem:
●The 12-volt battery terminal connections may be loose or corroded.
●The 12-volt battery may be discharged. (→P. 5 4 7 )
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. 209)
The interior lights and headlights are dim, or the horn does not sound or
sounds at a low volume.
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5428-2. Steps to take in an emergency
IS300h_EE(OM53C61E)
One of the following may be the cause of the problem:
●One or both of the 12-volt battery terminals may be disconnected.
●The 12-volt battery may be discharged. (→P. 5 4 7 )
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional if the problem cannot 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:
Set the parking brake.
Shift the shift lever to P.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for about 15 seconds while depressing the
brake pedal firmly.
Even if the hybrid system can be started using the above steps, the system may
be malfunctioning. Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
The interior lights and headlights do not turn on, or the horn does not
sound.
Emergency start function
1
2
3
4
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