Page 732 of 914
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
Page 766 of 914
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
Page 772 of 914

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
Page 781 of 914
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
Page 782 of 914
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)
Page 787 of 914
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
Page 817 of 914

7967-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)
CAUTION
When using the full-size spare tire as a rear tire (vehicles with front and rear
tires of differing sizes)
Replace the spare tire with a standard tire as soon as possible.
Avoid sudden acceleration, abrupt steering, as well as sudden braking and
shifting operation to engine braking.
When using the compact spare tire
Remember that the compact spare tire provided is specifically designed
for use with your vehicle. Do not use your compact spare tire on another
vehicle.
Do not use more than one compact spare tires simultaneously.
Replace the compact spare tire with a standard tire as soon as possible.
Avoid sudden acceleration, abrupt steering, as well as sudden braking and
shifting operation to engine braking.
When the compact spare tire is attached
The vehicle speed may not be correctly detected, and the following systems
may not operate correctly:
Also, not only can the following system not be utilized fully, but it may
even negatively affect the drive-train components:
• AWD system
• ABS & Brake assist
•VSC
•TRC
• Cruise control (if equipped)
• Dynamic radar cruise control
(if equipped)
• PCS (if equipped)
•EPS
• AFS (if equipped)• AVS (if equipped)
• LKA (Lane-Keeping Assist)
(if equipped)
• Lexus parking assist monitor
(if equipped)
• Lexus parking assist-sensor
(if equipped)
• Navigation system (if equipped)
Page 884 of 914
8628-2. Customization
GS350/250_EE (OM30C36E)
Automatic
light con-
trol system
(P. 228)
“Light sensor sensitiv-
ity” (Adjust the sensitiv-
ity of the ambient light
sensor)
Standard-2 to 2O—O
“Follow me home”
(Time elapsed before
headlights automati-
cally turn off)
30
seconds
60
seconds
——O90
seconds
120
seconds
Welcome light illumina-
tion controlOnOff——O
Lexus
parking
assist-sen-
sor
*1
(P. 284)
“Distance (Front)”
(Detection distance of
the front center sensor)
FarNearO—O
“Distance (Rear)”
(Detection distance of
the rear center sensor)
FarNearO—O
“Alert volume” (Alert
volume can be adjusted)31 to 5O—O
“Display” (when Lexus
parking assist-sensor is
operating)All sen-
sors dis-
playedDisplay
offO—O
ItemFunctionDefault
settingCustom-
ized set-
ting
123