Park Lexus GS250 2012 Owners Manual

7146-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
Right-hand drive vehicles
FuseAmpereCircuit
1P/SEAT1 F/L30Power seats
2D/L NO.125Power door lock system
3NV-IR10No circuit
4FL S/HTR10Seat heaters/ventilators
5STRG HTR15Heated steering wheel
6WIPER-IG5Windshield wipers
7LH-IG10
Seat belts, body ECU, AFS, Remote
Touch screen, overhead module, rain-
drop sensor, moon roof, inside rear view
mirror, LKA, front left-hand door ECU,
Lexus parking assist-sensor, power seats,
CAN gateway ECU
8LH ECU-IG10Yaw rate and G sensor, air conditioning
system, AFS, driver support system
9DOOR FL30Outside rear view mirror defoggers,
power window (front left-hand)
10CAPACITOR
(HV)10No circuit
11AM27.5Power management system, smart entry
& start system
12D/L NO.225Power door lock system
13DOOR RL30Power window (rear left-hand)
14HAZ15Turn signal lights, emergency flashers

7206-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
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)7.5No circuit
8BATT FAN (HV)20No circuit
9SECURITY7.5SECURITY
10ECU-B NO.37.5Parking brake
11TRK OPN7.5Power trunk lid
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

737
7When trouble arises
GS350/250_EE (OM30C36E)
7-1. Essential information
Emergency flashers ........... 738
If your vehicle
has to be stopped
in an emergency .............. 7397-2. Steps to take in an emergency
If your vehicle needs
to be towed ..................... 740
If you think something
is wrong .......................... 747
Fuel pump shut off system 748
If a warning light turns on or
a warning buzzer sounds 749
If a warning message
is displayed ..................... 757
If you have a flat tire (vehicles
with a spare tire) ............. 782
If you have a flat tire (vehicles
without a spare tire) ........ 797
If the engine will not start . 815
If the shift lever cannot be
shifted from P ................. 817
If the parking brake
cannot be released........... 818
If the electronic key does not
operate properly .............. 821
If the vehicle battery
is discharged ................... 824
If your vehicle overheats .. 829
If the vehicle
becomes stuck................. 832

7457-2. Steps to take in an emergency
7
When trouble arises
GS350/250_EE (OM30C36E)
Before emergency towing
Release the parking brake.
Shift the shift lever to N.
Turn the engine switch to ACCESSORY (engine off) or IGNITION ON
(engine running) mode.
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
Caution while towing
Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive
stress on the emergency towing eyelets and the cables or chains. Always
be cautious of the surroundings and other vehicles while towing.
If the engine is not running, the power assist for the brakes and steering
will not function, making steering and braking more difficult.
Installing towing eyelets to the vehicle
Make sure that towing eyelets are installed securely.
If not securely installed, towing eyelets may come loose during towing.
1
2
3

7517-2. Steps to take in an emergency
7
When trouble arises
GS350/250_EE (OM30C36E)
Electric power steering system warning light
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. 343)
• The light will turn on when the pre-crash safety system
is disabled. (P. 344)
• The light will flash when the system cannot temporarily
be used. (P. 774)
Slip indicator
Indicates a malfunction in:
•The VSC system;
• The TRC system; or
• The hill-start assist control system
The light will flash when the VSC, the TRC or the hill-
start assist control system is operating.
(Flashes)
(If equipped)
“AFS OFF” indicator
Indicates a malfunction in the adaptive front-lighting sys-
tem
(Flashes)
Parking brake indicator
Indicates a malfunction in the parking brake system
Brake system warning light
Indicates a malfunction in the parking brake system
Wa r n i n g
lightWarning light/Details

7607-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)
(If equipped)
Indicates a malfunction in the Lexus parking-
assist sensor
The malfunctioning assist-sensor is flashing.
Indicates a malfunction in the dynamic radar
cruise control system (if equipped) or the cruise
control system
Press the “ON-OFF” button once to deactivate
the system, and then press the button again to
reactivate the system.
(If equipped)
Indicates a malfunction in the LKA (Lane-Keep-
ing Assist)
(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

7617-2. Steps to take in an emergency
7
When trouble arises
GS350/250_EE (OM30C36E)
(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 parking brake sys-
tem
Wa r n i n g m e s s a g eDetails
(Flashes)

7627-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)
Indicates a malfunction in the parking brake sys-
tem
Indicates a malfunction in the EPS (Electric
Power Steering) system
(If equipped)
Indicates a malfunction in the Blind Spot Moni-
tor
Indicates a malfunction in the smart entry & start
system
Wa r n i n g m e s s a g eDetails
(Flashes)
(Flashes)

7657-2. Steps to take in an emergency
7
When trouble arises
GS350/250_EE (OM30C36E)
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 shift
range 1 has been
selected with the shift
lever in M when driv-
ing on slippery road
surfaces.
The range will not be
downshifted and
remain 2.
Drive with the shift
range higher than 2.
Wa r n i n g m e s s a g eDetailsCorrection procedure
(Flashes)
(Flashes)

7667-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)
Indicates that engine
oil level is lowCheck the level of
engine oil, and add if
necessary.
(If equipped)
Indicates that Lexus
parking assist-sensor is
dirty or covered with
ice
Clean the sensor.
(If equipped)
Indicates that the radar
sensor is dirty or cov-
ered with ice
Clean the sensor.
(If equipped)
Indicates that the radar
cruise control system is
unable to judge vehi-
cle-to-vehicle distance
• Turn off the snow
mode.
• If the windshield
wipers are on, turn
them off or set them
to a mode other than
AUTO or high speed
wiper operation.
Wa r n i n g m e s s a g eDetailsCorrection procedure