2015 Lexus ES300h battery

6328-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural
air leaks and tire inflation pressure changes caused by temperature. In this case,
adjusting the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
Vehicles with a compact spare tire: The compact spare tire is not equipped with a tire
pressure warning valve and transmitter. If a tire goes flat, the tire pressure warning
light will not turn off even though the flat tire has been replaced with the spare tire.
Vehicles with a full-size spare tire: The spare tire is also equipped with a tire pressure
warning valve and transmitter. The tire pressure warning light will turn on if the tire
inflation pressure of the spare tire is low. If a tire goes flat, the tire pressure warning
light will not turn off even though the flat tire has been replaced with the spare tire.
■Conditions that the tire pressure warning system may not function properly
P. 5 7 1
■If the tire pressure warning light freque ntly comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when
the “START STOP ENGINE” <“POWER”> switch is turned to IGNITION ON
mode, have it checked by your Lexus dealer.
■Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage temporarily
drops, the electric power steering system warning light may come on and the warn-
ing buzzer may sound.
■Warning buzzer
In some cases, the buzzer may not be he ard because of noisy place or an audio
sound.

6438-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
8
When trouble arises
Indicates that the parking
brake is still engagedIf the vehicle reaches a
speed of 3 mph
(5 km/h),
flashes and a buzzer
sounds to indicate that
the parking brake is
still engaged.
Release the parking
brake.
Indicates that the hybrid
battery (traction battery)
is low
When stopping the vehi-
cle for a long period of
time, shift the shift lever to
P. The battery cannot be
charged with the shift
lever in N.
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
Restart the hybrid system
when starting the vehicle.
Indicates that the accel-
erator pedal is depressed
while the shift position is
in NRelease the accelerator
pedal and shift the shift
lever to D or R.
Wa r n i n g m e s s a g eDetailsCorrection procedure
(Flashes)
(Hybrid vehicles)
(Flashes)
(Hybrid vehicles)
(Flashes)
(Hybrid vehicles)

6448-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
*: For the EV drive mode operating conditions: P. 2 1 9
Indicates that the EV
drive mode is not avail-
able
*
The reason the EV
drive mode is not avail-
able (the vehicle is
idling, battery charge is
low, speed is higher
than the EV drive
mode operating speed
range, accelerator
pedal is depressed too
much) may be dis-
played.
Use the EV drive mode
when it becomes avail-
able.
Indicates that the EV
drive mode has been
automatically canceled
*
The reason the EV
drive mode is not avail-
able (the battery
charge is low, speed is
higher than the EV
drive mode operating
speed range, accelera-
tor pedal is depressed
too much) may be dis-
played.
Drive the vehicle for a
while.
Indicates that engine oil
level is lowCheck the level of engine
oil, and add if necessary.
Wa r n i n g m e s s a g eDetailsCorrection procedure
(Hybrid vehicles)
(Hybrid vehicles)
(If equipped)

6488-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
■Warning message in radar cruise mode (if equipped)
In the following cases, the warning message may not be displayed even if vehicle-to-
vehicle distance decreases:
●When your vehicle and the vehicle ahead are traveling at the same speed or the
vehicle ahead is traveling more quickly than your vehicle
●When the vehicle ahead is traveling at a very low speed
●Immediately after cruise control speed is set
●At the instant the accelerator pedal is depressed
■The LDA (Lane Departure Alert) system (if equipped)
In the following cases, the warning message will not be displayed even if the vehicle
deviates from the lane markers.
●When the vehicle speed deviates from the operating range of the LDA system
functions
●When the lane markers cannot be recognized
Carrying out the corresponding action turns the messages off.
Other displayed messages
Displayed messageDetailsCorrection procedure
Maintenance of the
hybrid system (traction
battery) cooling compo-
nent is required The filter may be
clogged, the air vent
may be blocked or
there may be a gap in
the duct.
Have maintenance per-
formed on the hybrid sys-
tem (traction battery)
cooling component at
your Lexus dealer.

6568-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
InteriorbuzzerExterior
buzzerWa r n i n g m e s s a g eDetailsCorrection procedure

Power was turned
off due to the auto-
matic power off
function.
Next time
when start-
ing the
engine
tem>,
increase the
engine
speed
slightly and
maintain
that level for
approxi-
mately 5
minutes to
recharge
the 12-volt
battery.
OnceThe electronic key
has a low battery.
Replace the
electronic
key batter y.
(  P. 5 8 4 )

672
ES350_300h_OM_OM33B99U_(U)
8-2. Steps to take in an emergency
If the engine will not start (gasoline vehicles)
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 foll owing correct starting procedures.
( P. 205)
●There may be a malfunction in the engine immobilizer system.
( P. 8 4 )
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 680)
●The 12-volt battery terminal connecti ons may be loose or corroded.
The engine starting system may be malfunctioning due to an electrical
problem such as electronic key ba ttery depletion or a blown fuse. How-
ever, an interim measure is available to start the engine. ( P. 673)
If the engine will not start even though correct starting procedures are
being followed ( P. 205), consider each of the following points:
The engine will not start even though the starter motor operates
normally.
The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume.
The starter motor does not turn over

6738-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
8
When trouble arises
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. 680)
●There may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if repair proce-
dures are unknown.
When the engine does not start, the following steps can be used as an
interim measure to start the engine if the “START STOP ENGINE” switch
is functioning normally:
Set the parking brake.
Shift the shift lever to P.
Turn the “START STOP ENGINE” switch to ACCESSORY mode.
Press and hold the “START STOP ENGINE” switch for about 15 sec-
onds while depressing the brake pedal firmly.
Even if the engine can be started using the above steps, the system may be
malfunctioning. Have the vehicle inspected by your Lexus dealer.
The starter motor does not turn ov er, the interior lights and head-
lights do not turn on, or the horn does not sound.
Emergency start function
1
2
3
4

674
ES350_300h_OM_OM33B99U_(U)
8-2. Steps to take in an emergency
If the hybrid system will not start (hybrid vehicles)
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (P. 6 7 8 )
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( P. 8 6 )
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctio ning due to an electrical problem
such as electronic key battery de pletion or a blown fuse. However,
depending on the type of malfuncti on, an interim measure is available
to start the hybrid system. ( P. 675)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 6 8 4 )
●The 12-volt battery terminal connecti ons may be loose or corroded.
Reasons for the hybrid system not st arting vary depending on the situa-
tion. Check the following and perf orm the appropriate procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 2 1 2 )
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.