brake light Lexus GS300h 2013 Owner's Guide

795 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS450h_300h_OM_OM30D53E_(EE)
14HAZ15Turn signal lights, emergency flashers
15LH-IG210
Multiport fuel injection system/sequen-
tial multiport fuel injection system, stop
lights, smart entry & start system, steer-
ing lock system, brake system, power
management system
16LH J/B-B7.5Body ECU
17S/ROOF20Moon roof
18P/SEAT2 F/L25Power seats
19A/C7.5Air conditioning system
FuseAmpereCircuit

7986-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30D53E_(EE)
Right-hand drive vehicles
FuseAmpereCircuit
1STOP7.5Stop lights, high mounted stoplight
2P/SEAT1 F/R30Power seats
3FR P/OUTLET15Power outlet (front)
4P/W-B5Power window master switch
5RR P/OUTLET15Power outlet (rear)
6P/SEAT2 F/R25Power seats
7AV S20AV S
8WIPER30Windshield wipers
9WA S H20Windshield washer
10RH ECU-IG10
Navigation system, VGRS, Lexus night
view, brake system, D-SW MODULE
(Blind Spot Monitor, heated steering
wheel), pre-crash seat belts, DRS
11RH-IG10
Tension reducer, power seats, head-up
display, front right-hand door ECU,
“nanoe™”, shift lock system, electric tilt
and telescopic steering column, seat
heater/ventilator switches, smart entry &
start system antennas, tire pressure warn-
ing system receiver, driver monitor sys-
tem
12DOOR FR30
Front right-hand door control system
(outside rear view mirror defoggers,
power window)

8006-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30D53E_(EE)
Trunk
FuseAmpereCircuit
1PSB30Pre-crash seat belts
2PTL25Power trunk lid
3RR J/B-B10Smart entry & start system
4RR S/HTR20Seat heaters (rear)
5FR S/HTR10Seat heaters/ventilators (front)
6RR FOG10Rear fog light
7DC/DC-S (HV)7.5DC/DC converter
8BATT FAN (HV)20Hybrid battery (traction battery) cooling
fan system
9SECURITY7.5SECURITY
10ECU-B NO.37.5Parking brake
11TRK OPN7.5Power trunk lid, trunk open motor
12DCM (HV)7.5No circuit
13AC INV (HV)20No circuit
14RR-IG15Radar sensor, Blind Spot Monitor
15RR ECU-IG10
Power trunk lid, parking brake, tension
reducer (rear left-hand), RR CTRL SW,
tire pressure warning system
16EPS-IG5Electric power steering system
17BACK UP7.5Back-up light

819
7When trouble arises
GS450h_300h_OM_OM30D53E_(EE)7-1. Essential information
Emergency flashers ........... 820
If your vehicle
has to be stopped
in an emergency .............. 8217-2. Steps to take in an emergency
If your vehicle needs
to be towed ..................... 822
If you think something
is wrong .......................... 829
If a warning light turns on
or a warning buzzer
sounds ............................. 830
If a warning message
is displayed ..................... 838
If you have a flat tire (vehicles
with a spare tire) ............. 870
If you have a flat tire (vehicles
without a spare tire) ........ 884
If the hybrid system
will not start .................... 902
If the shift lever cannot be
shifted from P ................. 904
If the parking brake
cannot be released........... 905
If the electronic key does not
operate properly .............. 908
If the 12-volt battery
is discharged ....................911
If your vehicle overheats .. 915
If the vehicle
becomes stuck................. 923

8307-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
If a warning light turns on or a warning buzzer
sounds
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.
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 necessarily 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.
Stop the vehicle immediately. Continuing to drive the vehicle
may be dangerous.
Wa r n i n g
lightWarning light/Details
Brake system warning light (warning buzzer)
• Low brake fluid
• Malfunction in the electronically controlled brake sys-
tem

8327-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system
Wa r n i n g
lightWarning light/Details

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.

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)