2013 Lexus GS300h brake

8337-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
Electric power steering system warning light (warning
buzzer)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
(Flashes)
(If equipped)
Pre-crash safety system warning light
Indicates a malfunction in the 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 operat-
ing.
(P. 406)
• The light will turn on when the pre-crash safety system
is disabled. (P. 408)
• The light will flash when the system cannot temporarily
be used. (P. 862)
Slip indicator
Indicates a malfunction in:
•The VSC system; or
• The TRC system
The light will flash when the VSC or the TRC system is
operating.
(Flashes)
(If equipped)
“AFS OFF” indicator
Indicates a malfunction in the adaptive front-lighting sys-
tem
(Flashes)
Brake hold operated indicator
Indicates a malfunction in the brake hold system
(Flashes)
Parking brake indicator
Indicates a malfunction in the parking brake system
Brake system warning light
Indicates a malfunction in:
• The electronically controlled brake system;
• The regenerative braking system; or
• The parking brake system
Wa r n i n g
lightWarning light/Details

8387-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
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 profes-
sional. 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 operate 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.
Stop your vehicle in a safe place as soon as possible. Adjust the tire infla-
tion pressure immediately.
If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is probable that you have a flat tire. Check the tires. If a
tire is flat, change it with the spare tire and have the flat tire repaired by
the nearest any authorized Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
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.
NOTICE
Precaution when installing a different tire
When differently constructed tires or tires of different makers, models or
tread patterns are installed, the tire pressure warning system may not oper-
ate properly.

8397-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
If a warning message is displayed
Master warning light
The master warning light also
comes on or flashes in order to
indicate that a message is currently
being displayed on the multi-infor-
mation display.
Multi-information display
If any of the warning light comes on again after the following
actions have been performed, contact any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional.
The following warning indicates a possible problem in the brake
system. Immediately stop the vehicle in a safe place and contact
any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
If a warning is shown on the multi-information display, stay calm
and perform the following actions:
1
2
Stop the vehicle immediately. Continuing to drive the vehicle
may be dangerous.
Wa r n i n g m e s s a g eDetails
Indicates the following:
• The brake fluid level is low; or,
• The brake system is malfunctioning.
A buzzer also sounds.

8407-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
Indicates a malfunction in:
• The regenerative brake system;
• The electronically controlled brake system;
or
• The electric parking brake
A buzzer also sounds.
Wa r n i n g m e s s a g eDetails

8437-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
(If equipped)
Indicates a malfunction in the dynamic radar
cruise control with full-speed range
Depress the brake pedal.
(If equipped)
Indicates a malfunction in the LKA (Lane-Keep-
ing Assist)
(If equipped)
Indicates a malfunction in the LED headlight
system
(If equipped)
Indicates a malfunction in the automatic head-
light leveling system
Wa r n i n g m e s s a g eDetails
(Flashes)

8447-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
(If equipped)
Indicates a malfunction in the adaptive front-
lighting system
Indicates a malfunction in:
• The SRS airbag system; or,
• The seat belt pretensioner system
(If equipped)
Indicates a malfunction in the Automatic High
Beam system
Indicates a malfunction in:
•The ABS; or,
• The brake assist system
Indicates a malfunction in the brake hold system
Wa r n i n g m e s s a g eDetails
(Flashes)

8457-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
Indicates a malfunction in the brake hold system
Depress the brake pedal.
Indicates a malfunction in the parking brake sys-
tem
Indicates a malfunction in the parking brake sys-
tem
Indicates a malfunction in the EPS (Electric
Power Steering) system
Wa r n i n g m e s s a g eDetails
(Flashes)

8507-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
Indicates that the park-
ing brake is still
engaged
If the vehicle reaches
a speed of 5 km/h
(3 mph),
flashes and a buzzer
sounds to indicate
that the parking
brake is still
engaged.
Release the parking
brake.
Indicates that the park-
ing brake system has
overheatedWait until the system
cools down.
Indicates that the brake
hold system is not hold
the vehicle when the
vehicle is on a steep
incline
Use the brake hold sys-
tem when it becomes
available.
Indicates that the brake
hold system is unable
to cancel the brake
hold function
Depress the brake
pedal.
Wa r n i n g m e s s a g eDetailsCorrection procedure
(Flashes)
(Flashes)
(Flashes)