Lexus GS300 2019 Owner's Manual

4517-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
7
When trouble arises
Indicates an engine malfunction A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates an engine malfunction
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupa nt classification system;
or,
• The seat belt pretensioner system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates a malfunction in:
• The ABS; or
• The brake assist system
A buzzer also sounds.
 Immediately stop the vehicle in a safe place and
contact your Lexus dealer. Continuing to drive the
vehicle may be dangerous.
Warning messageDetails/Actions
(U.S.A.) (Canada)
(U.S.A.) (Canada)

4527-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
Indicates that the engine coolant temperature is too highA buzzer also sounds.
 P. 512
(GS350/GS300 only)
Indicates a malfunction in the vehicle’s charging system.
Immediately stop the vehicle in a safe place and
contact your Lexus dealer. Continuing to drive the
vehicle may be dangerous.
(If equipped)
Indicates that the radar sensor is dirty or covered with
ice A buzzer also sounds.
 Clean the sensor.
Warning messageDetails/Actions

4537-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
7
When trouble arises
(If equipped)
Indicates that the dynamic radar cruise control system
cannot be used temporarily due to bad weather A buzzer also sounds.
 Use the radar cruise control system when it
becomes available again.
(If equipped)
Indicates that the radar cruise control system brake con-
trol function is temporarily unavailable
A buzzer also sounds.
 Depress the brake.
Indicates a malfunction in the smart access system with
push-button start
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates that a Blind Spot Monitor sensor or the sur-
rounding area on the bumper is dirty or covered with ice
A buzzer also sounds.
 Clean the sensor and its surrounding area on the
bumper.
Warning messageDetails/Actions
(Flashes)

4547-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
Indicates a malfunction in the cruise control system or
dynamic radar cruise control system (if equipped)
Press the “ON/OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates a malfunction in the dynamic radar cruise con-
trol with full-speed range
Depress the brake pedal.
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates a malfunction in the LKA (Lane-Keeping
Assist) system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
The operation conditions of the camera sensor (tem-
perature, etc.) are not met.
When the operation conditions of the camera sen-
sor (temperature, etc.) are met, the following sys-
tems will become available.
• PCS (Pre-Collision System)
• LKA (Lane-Keeping Assist) system
• Dynamic radar cruise control with full-speed range
•Automatic High Beam
Warning messageDetails/Actions
(Flashes)

4557-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
7
When trouble arises
(If equipped)
Indicates that the system is temporarily unavailable due
to a malfunction in a sensor other than the camera sen-
sor A buzzer also sounds.
 Turn the LKA (Lane-Keeping Assist) system off, wait
for a little while, and then turn the LKA (Lane-Keep-
ing Assist) system back on.
(If equipped)
Dirt, rain, condensation, ice, snow, etc., are present on
the windshield in front of the camera sensor. The following systems may be suspended until the
problem shown in the message is resolved.
• PCS (Pre-Collision System)
• LKA (Lane-Keeping Assist) system
• Dynamic radar cruise control with full-speed range
•Automatic High Beam
 Turn the system off, remove any dirt, rain, condensa-
tion, ice, snow, etc., from the windshield, and then
turn the system back on.
(If equipped)
Indicates a malfunction in the PCS (Pre-Collision Sys-
tem)
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Warning messageDetails/Actions
(Flashes)

4567-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
(If equipped)
Indicates a malfunction in the BSM (Blind Spot Monitor)
systemA buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates abnormal engine oil pressure
A buzzer also sounds.
 Immediately stop the vehicle in a safe place and
contact your Lexus dealer.
Indicates that the automatic transmission fluid tempera-
ture is too high
A buzzer also sounds.
 Immediately stop the vehicle in a safe place and
contact your Lexus dealer.
Warning messageDetails/Actions

4577-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
7
When trouble arises
(AWD models only)
Indicates a malfunctio n in the AWD system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates a malfunction in the VGRS (Variable Gear
Ratio Steering)
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates a malfunction in the DRS (Dynamic Rear
Steering) A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(GS350/GS300 only)
Indicates a malfunction in th e electronically controlled
brake system A buzzer also sounds.
 Immediately stop the vehicle in a safe place and
contact your Lexus dealer. Continuing to drive in
this condition is dangerous.
Warning messageDetails/Actions

4587-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
Indicates an attempt was made to engage the parking
brake while drivingA buzzer also sounds.
 Press the parking brake switch. If the warning mes-
sage is still displayed, have the vehicle inspected by
your Lexus dealer.
Indicates a malfunction in the parking brake system
A buzzer also sounds.
 Press the parking brake switch. If the warning mes-
sage is still displayed, have the vehicle inspected by
your Lexus dealer.
(If equipped)
Indicates that LKA (Lane-Ke eping Assist) system cannot
be used due to the vehicle speed being too high
 Slow down.
Warning messageDetails/Actions
(U.S.A.) (Canada)

4597-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
7
When trouble arises
Indicates that the engine 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.
Indicates that the moon roof is not fully closed (with the
engine 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
engine switch off, and the driver’s door open)
A buzzer also sounds.
 Close all the windows.
Indicates that the windows and the moon roof are not
fully closed (with the engine 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 hold system
A buzzer also sounds.
 Have the vehicle inspecte d by your Lexus dealer
immediately.
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Flashes)
(Flashes)

4607-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
Indicates that the brake hold system cannot be turned offA buzzer also sounds.
 Depress the brake pedal.
Indicates that the brake hold system is not available
The reason the brake hold system is not available may
be displayed.
A buzzer also sounds.
 Close the driver’s door.
 Fasten the driver’s seat belt.
Indicates that the brake hold system is unable to con-
tinue brake hold function
The reason the brake hold system is not continue may
be displayed.
A buzzer also sounds.
 Depress the brake pedal.
 Close the driver’s door.
 Fasten the driver’s seat belt.
Warning messageDetails/Actions