2020 Lexus GS350 high beam

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GS350_GS F_OM_OM30J07U_(U)4-3. Operating the lights and wipers
■Temporarily lowering sensor sensitivity
The sensitivity of the sensor
can be temporarily lowered.
Turn the engine switch off while the following conditions are met.
• The headlight switch is in or .
• The headlight switch lever is in high beam position.
• Automatic High Beam switch is on.
Turn the engine switch to IGNITION ON mode.
Within 30 seconds after , repeat pulling th e headlight switch lever to the original
position then pushing it to the high beam position quickly 10 times, then leave the lever
in high beam position.
If the sensitivity is changed, the Automatic High Beam indicator is turn on and off 3
times.
Automatic High Beam (head lights) may turn on even the vehicle is stopped.
■Warning message
Warning messages are used to indicate a syst em malfunction or to inform the driver of
the need for caution. ( P. 442)
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2
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4

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GS350_GS F_OM_OM30J07U_(U)4-5. Using the driving support systems
4
Driving
Lexus Safety System +
◆PCS (Pre-Collision System)

P. 245
◆LKA (Lane-Keeping Assist)
P. 256
◆Automatic High Beam
P. 225
◆Dynamic radar cruise control with full-speed range
P. 266
: If equipped
The Lexus Safety System + consists of the following drive assist systems and
contributes to a safe and comfo rtable driving experience:
WARNING
■Lexus Safety System +
The Lexus Safety System + is designed to operate under the assumption that the driver
will drive safely, and is designed to help reduce the impact to the occupants and the
vehicle in the case of a collision or assist the driver in normal driving conditions.
As there is a limit to the degree of recognition accuracy and control performance that
this system can provide, do not overly rely on this system. The driver is always responsi-
ble for paying attention to the vehicle’s surroundings and driving safely.

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GS350_GS F_OM_OM30J07U_(U)6-3. Do-it-yourself maintenance
Do-it-yourself service precautions
*: Vehicles with sing
le-beam headlights
If you perform maintenance by yourself, be sure to follow the correct proce-
dure as given in these sections.
ItemsParts and tools
Battery condition
( P. 391)•Warm water• Baking soda•Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
( P. 390)
• FMVSS No.116 DOT 3 or SAE J1703 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant level
( P. 388)
•“Toyota Super Long Life Coolant” or a similar high quality
ethylene glycol-based non-silicate, non-amine, non-nitrite
and non-borate coolant with long-life hybrid organic acid
technology
For the U.S.A.:
“Toyota Super Long Life Coolant” is pre-mixed with 50%
coolant and 50% deionized water.
For Canada:
“Toyota Super Long Life Cool ant” is pre-mixed with 55%
coolant and 45% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
(  P. 385)
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( P. 413)• Fuse with same amperage rating as original
Headlight aim*
(  P. 417)• Phillips-head screwdriver
Light bulbs
( P. 419)
• Bulb with same number and wattage rating as original
• Phillips-head screwdriver•Flathead sc rewdriver
•Wrench
Radiator and con-
denser (P. 389)
Tire inflation pres-
sure (P. 404)• Tire pressure gauge• Compressed air source
Washer fluid
( P. 393)• Water or washer fluid containing antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)

GS350_GS F_OM_OM30J07U_(U)
4216-3. Do-it-yourself maintenance
6
Maintenance and care
When installing, reverse the steps listed.
After installing the bulb base, secure the cord with the clips and if replacing the left
side bulb, make sure to install the bolt for the washer fluid fille r opening in its origi-
nal position.
■Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by your Lexus
dealer.
●Headlights
●Parking lights/daytime running lights
●Front side marker lights
●Front turn signal lights (vehic les with triple-beam headlights)
●Side turn signal lights
●Stop/tail lights
●Stop lights
●Rear side marker lights
●Rear turn signal lights
●Back-up lights
●High mounted stoplight
●License plate lights
●Outer foot lights
4
Right sideLeft side

4527-2. Steps to take in an emergency
GS350_GS F_OM_OM30J07U_(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)

4537-2. Steps to take in an emergency
GS350_GS F_OM_OM30J07U_(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)

4617-2. Steps to take in an emergency
GS350_GS F_OM_OM30J07U_(U)
7
When trouble arises
Indicates that engine oil level is low
This message may ap pear if the vehicle is stopped on a
slope. Move the vehicle to a level surface and check to
see if the message disappears.
A buzzer also sounds.
 Check the level of engine oil, and add if necessary.
Indicates a malfunction in:
• The Automatic High Beam system (if equipped);
• The AFS (Adaptive Front-lighting System) (if
equipped); or
• The LED headlight system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(GS F for Canada only)
Indicates that the brake pads are worn out
A buzzer also sounds
 Have the vehicle inspected visually by your Lexus
dealer.
Warning messageDetails/Actions

4657-2. Steps to take in an emergency
GS350_GS F_OM_OM30J07U_(U)
7
When trouble arises
Warning messageDetails/Actions
(If equipped)
Indicates that the Automati c High Beam switch was
pressed while the low beams were on
 Turn the high beam headlights on before pressing
the Automatic High Beam switch.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-collision braking and pre-
collision brake assist are stopped (The pre-collision
warning function will be operational)
 Turn the VSC on. ( P. 300)