brake Lexus IS300h 2013 Repair Manual

5158-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
Warning message and warning buzzer list
Warning messageDetails/Actions
(If equipped)
Indicates that:
• There is a high possibility of a frontal collision;
or
• The pre-crash braking function is operating
A buzzer also sounds.
Slow the vehicle by applying the brakes.
Indicates that the hybrid system was stopped with
the shift lever not in P
A buzzer also sounds.
Shift the shift lever to P.
Indicates that the hybrid system was stopped while
driving
A buzzer also sounds.
Stop the vehicle in a safe place such as the shoul-
der of a road.
(If equipped)
Indicates that your vehicle is nearing the vehicle
ahead (in vehicle-to-vehicle distance mode)
A buzzer also sounds.
Slow the vehicle by applying the brakes.
(If equipped)
Alerts the driver that the vehicle has deviated from
the lane (while the LDA [Lane Departure Alert]
system is operating)
The lane line on the side the vehicle has deviated
from flashes in yellow.
The warning buzzer sounds continuously.
Check around the vehicle and back to inside of
the lane lines.
(Flashes)
(Flashes)
(Flashes)

5168-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
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 profes-
sional. Continuing to drive the vehicle may be
dangerous.
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 profes-
sional.
Indicates that one or more of the doors is not fully
closed
The system also indicates which doors are not
fully closed.
If the vehicle reaches a speed of 5 km/h (3 mph),
flashes and a buzzer sounds to indicate
that the door(s) are not yet fully closed.
Make sure that all the doors are closed.
Indicates that the hood is not fully closed
If the vehicle reaches a speed of 5 km/h (3 mph),
flashes and a buzzer sounds to indicate
that the hood is not yet fully closed.
Close the hood.
Indicates that the trunk is not fully closed
If the vehicle reaches a speed of 5 km/h (3 mph),
flashes and a buzzer sounds to indicate
that the trunk is not yet fully closed.
Close the trunk.
(If equipped)
Indicates a malfunction in the Lexus parking
assists-sensor
The assist-sensors flash.
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Warning messageDetails/Actions

5188-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
Indicates a malfunction in the EPS (Electric Power
Steering) system
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Indicates that the vehicle is being driven at 5 km/h
(3 mph) or more with the parking brake still
engaged
A buzzer also sounds.
Release the parking brake.
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Indicates a malfunction in:
•The ABS; or
• The brake assist system
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Indicates that the engine coolant temperature is too
high
A buzzer also sounds.
P. 5 5 6
(If equipped)
Indicates that the radar sensor is dirty or covered
with ice
A buzzer also sounds.
Clean the sensor.
Warning messageDetails/Actions
(Flashes)

5208-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
(If equipped)
Indicates a malfunction in the PCS (Pre-Crash
Safety system)
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
(If equipped)
Indicates a malfunction in the BSM (Blind Spot
Monitor) system
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Indicates abnormal engine oil pressure
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 profes-
sional.
Indicates a malfunction in:
• The regenerative brake system; or
• The electronically controlled brake 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 profes-
sional.
Indicates that the Pop Up Hood system has operated
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Indicates a malfunction in the Pop Up Hood system
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Indicates that the hybrid system was stopped while
driving
A buzzer also sounds.
Operate the steering wheel with more force than
usual.
Warning messageDetails/Actions
(Flashes)

5218-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
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 sys-
tem
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Indicates that engine oil level is low
A buzzer also sounds.
Check the level of engine oil, and add if neces-
sary.
Indicates that the hybrid system has overheated
This message may be displayed when driving
under severe operating conditions. (For example,
when driving up a long steep hill.)
A buzzer also sounds.
Stop and check. (P. 556)
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Flashes)

5228-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
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 quali-
fied 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
battery (traction battery) has dropped
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied 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
Turn the TRC on. (P. 295)
(If equipped)
Indicates that all maintenance is required to corre-
spond to the driven distance on the maintenance
schedule
*1.
Comes on approximately 10000 km (6214 miles)
after the maintenance data has been reset.
(The indicator will not work properly unless the
maintenance data has been reset.)
Perform the necessary maintenance. Please reset
the maintenance data after the maintenance is
performed (P. 442)
Warning messageDetails/Actions
(Flashes)

5238-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
(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 operation is stopped
Turn the VSC on. (P. 295)
(If equipped)
Indicates that the PCS (Pre-Crash Safety system) is
not currently functional because the grille cover or
the sensor is dirty
Check the grille cover and the sensor and clean
them if they are dirty.
Indicates that operation of large electricity consum-
ing systems such as the air conditioning system are
suspended
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) sys-
tem 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.
Warning messageDetails/Actions
(Flashes)

5288-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
Once
The electronic key has a low bat-
tery.
Replace the electronic key
battery. (P. 472)
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
qualified and equipped profes-
sional.
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
procedure in the event that the
electronic key was not function-
ing properly (P. 550), the
power switch was touched with
the electronic key.
Press the power switch within
10 seconds of the buzzer
sounding.
Interior
buzzerExterior
buzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)

5298-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)

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 with-
out 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.
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
maintain that level for approx-
imately 5 minutes to recharge
the 12-volt battery.
Con-
tinu-
ous

Indicates that the hybrid system
was stopped in an emergency
while driving
To restart the hybrid system,
shift the shift lever to N and
turn the power switch to ON
mode.
*
Interior
buzzerExterior
buzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)

5318-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
Stop the vehicle in a safe place on a hard, flat surface.
Set the parking brake.
Shift the shift lever to P.
Stop the hybrid system.
Turn on the emergency flashers. (P. 4 9 8 )
If you have a flat tire (vehicles without run-flat tires)
Your vehicle is equipped with an emergency tire puncture repair kit.
A puncture caused by a nail or screw passing through the tire tread can be
repaired temporarily with the emergency tire puncture repair kit.
CAUTION
If you have a flat tire
Do not continue driving with a flat tire.
Driving even a short distance with a flat tire can damage the tire and the wheel
beyond repair, which could result in an accident.
Before repairing the vehicle
Location of the emergency tire puncture repair kit