brake light Lexus IS300h 2014 Owner's Guide

5038-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53C61E)
If a warning light turns on or a warning buzzer
sounds
Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Brake system warning light (warning buzzer)*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
→Immediately stop the vehicle in a safe place and contact any
authorized Lexus dealer or repairer, or another duly qualified
and equipped professional. Continuing to drive the vehicle may
be dangerous.
Brake system warning light
Indicates a malfunction in:
• The regenerative braking system; or
• The electronically controlled brake system
→Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
→Immediately stop the vehicle in a safe place and contact any
authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
Malfunction indicator lamp
Indicates a malfunction in:
• The hybrid system;
• The emission control system (if equipped);
• The electronic engine control system; or
• The electronic throttle control system
→Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.
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5048-2. Steps to take in an emergency
IS300h_EE(OM53C61E)
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system
→Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.
ABS warning light
Indicates a malfunction in:
•The ABS; or
• The brake assist system
→Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.
Electric power steering system warning light
Indicates a malfunction in the EPS (Electric Power Steering) sys-
tem
→Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.
(Flashes)
(If equipped)
Pre-crash safety system warning light
Indicates a malfunction in the PCS (Pre-Crash Safety system)
The warning light will operate as follows, even when the system is
not malfunctioning:
• The light will flash quickly when the system is operating.
(→P. 2 9 2 )
• The light will turn on when the pre-crash safety system is dis-
abled. (→P. 2 9 3 )
• The light will turn on when the VSC (Vehicle Stability Control)
system is disabled. (→P. 2 8 8 )
• The light will flash when the system cannot temporarily be used.
(→P. 5 1 8 )
→Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.
Slip indicator
Indicates a malfunction in:
• The VSC (Vehicle Stability Control) system;
• The TRC (Traction Control) system; or
• The hill-start assist control system
The light will flash when the VSC, the TRC or the ABS system is
operating.
→Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.
Warning lightWarning light/Details/Actions
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5068-2. Steps to take in an emergency
IS300h_EE(OM53C61E)*
1: Parking brake engaged warning buzzer:
→P. 5 1 3
*2: Open door warning buzzer:
→P. 5 1 1
*3: Seat belt warning buzzer:
The seat belt warning buzzer sounds to alert the driver, front passenger and rear pas-
sengers that his or her seat belt is not fastened. The buzzer sounds for 30 seconds
after the vehicle reaches a speed of 20 km/h (12 mph). Then, if the seat belt is still
unfastened, the buzzer will sound in a different tone for 90 more seconds.
■Passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on a passenger seat, the passenger detection sensor may cause the
warning light to flash and the warning buzzer to sound even if a passenger is not sitting
in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the warn-
ing light may not operate properly.
■If the malfunction indicator lamp comes on while driving
The malfunction indicator lamp will come on if the fuel tank becomes completely empty.
If the fuel tank is empty, refuel the vehicle immediately. The malfunction indicator lamp
will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional as soon as possible.
■Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient of the voltage temporarily drops,
the electric power steering system warning light may come on and the warning buzzer
may sound.
■When the tire pressure warning light comes on
Carry out the following procedure after the tire temperature has lowered sufficiently.
●Check the tire inflation pressure and adjust to the appropriate level.
●If the warning light does not go out even after several minutes, check that the tire infla-
tion pressure is at the specified level and carry out initialization.
The warning light may come on again if the above operations are conducted without first
allowing the tire temperature to lower sufficiently.
■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).
■Conditions that the tire pressure warning system may not function properly
→P. 4 5 4
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5078-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53C61E)
■If the tire pressure warning light frequently comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the
power switch is turned to ON mode, have it checked by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio
sound.
CAUTION
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional. The vehicle will
become extremely unstable during braking, and the ABS system may fail, which could
cause an accident resulting in death or serious injury.
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and oper-
ate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.
XVehicles with an emergency tire puncture repair kit
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure
immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, repair the
flat tire by using emergency tire puncture repair kit.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes.
XVehicles with run-flat tires
●Decelerate to the lowest appropriate speed as soon as possible. Do not drive over 60
km/h (37 mph).
●Check and adjust the tire inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Have the tire replaced by the nearest
authorized Lexus dealer or repairer, or another duly qualified and equipped profes-
sional.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
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5168-2. Steps to take in an emergency
IS300h_EE(OM53C61E)
Indicates that the power switch is turned off or turned to
ACCESSORY mode and the driver’s door is opened
while the lights are turned on
A buzzer also sounds.
→Turn the lights off.
(If equipped)
Indicates that the moon roof is not fully closed (with the
power switch off, and the driver’s door open)
A buzzer also sounds.
→Close the moon roof.
Indicates that the windows are not fully closed (with the
power switch off, and the driver’s door open)
A buzzer also sounds.
→Close all the windows.
(If equipped)
Indicates that the windows and the moon roof are not
fully closed (with the power switch off, and the driver’s
door open)
A buzzer also sounds.
→Close all the windows and the moon roof.
Indicates a malfunction in the brake override system
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that engine oil level is low
A buzzer also sounds.
→Check the level of engine oil, and add if necessary.
Indicates that the hybrid system has overheated
This message may be displayed when driving under
severe operating conditions. (For example, when driv-
ing up a long steep hill.)
A buzzer also sounds.
→Stop and check. (→P. 552)
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Flashes)
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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
(Flashes)
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5188-2. Steps to take in an emergency
IS300h_EE(OM53C61E)
(If equipped)
Indicates that all maintenance listed in the maintenance
schedule*1 corresponding to the current vehicle mile-
age is necessary.
(The indicator will not work properly unless the mainte-
nance data has been reset.)
→Perform the necessary maintenance. Please reset
the maintenance data after the maintenance is per-
formed (→P. 4 4 2 )
(If equipped)
Indicates that the Automatic High Beam switch is
pressed while the headlights are in low beam.
→Turn the high beam on and press the Automatic
High Beam switch again.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-crash brake system oper-
ation is stopped
→Tu r n t h e V S C o n . (→P. 2 8 8 )
(If equipped)
Indicates that the PCS (Pre-Crash Safety system) is not
currently functional because the grille cover or the sen-
sor is dirty
→Check the grille cover and the sensor and clean
them if they are dirty.
Indicates that operation of large electricity consuming
systems such as the air conditioning system are sus-
pended
→Stop using unnecessary electric components to
reduce electricity consumption. Wait a while until
the electric power supply is restored.
(If equipped)
Indicates that the LDA (Lane Departure Alert) system
cannot be used because the vehicle speed is lower than
approximately 50 km/h (32 mph)
→Drive the vehicle at 50 km/h (32 mph) or higher.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)
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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
(Flashes)
(Flashes)
(Flashes)
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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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588What to do if... (Troubleshooting)
IS300h_EE(OM53C61E)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. (→P. 1 8 4 )
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or ON mode (the hybrid system is not operating) for a period of time.
(→P. 211)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? (→P. 505)
●The parking brake indicator is on
Is the parking brake released? (→P. 2 2 4 )
Depending on the situation, other types of warning buzzer may also sound.
(→P. 503, 509)

●Did anyone inside the vehicle open a door or anything move inside the vehicle
during setting the alarm?
The sensor detects them and the alarm sounds. (→P. 9 6 )
To stop the alarm, turn the power switch to ON mode or start the hybrid system.The windows do not open or close by operating the power window
switches
The power switch is turned off automatically
A warning buzzer sounds during driving
An alarm is activated and the horn sounds (if equipped)
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