engine Lexus GS350 2015 TIPS FOR THE NAVIGATION SYSTEM / LEXUS 2015 GS350 OWNERS MANUAL (OM30E15U)

4747-2. Steps to take in an emergency
GS350_OM_OM30E15U_(U)
*1: Open door warning buzzer: P. 4 8 7
*2: Driver’s seat belt buzzer:
The driver’s seat belt buzzer sounds to al ert the driver that his or her seat belt is
not fastened. Once the engine switch is turned to IGNITION ON mode, the
buzzer sounds for 6 seconds. If the vehicle reaches a speed of 12 mph (20 km/h),
the buzzer sounds once. If the seat belt is still unfastened after 24 seconds, the
buzzer will sound intermittently for 10 seco nds. Then, if the seat belt is still unfas-
tened, the buzzer will sound in a different tone for 20 more seconds.
Front passenger’s seat belt buzzer:
The front passenger’s seat belt buzzer soun ds to alert the front passenger that his
or her seat belt is not fastened. The buzzer sounds once if the vehicle reaches a
speed of 12 mph (20 km/h). If the seat belt is still unfastened after 24 seconds, the
buzzer will sound intermittently for 10 seco nds. Then, if the seat belt is still unfas-
tened, the buzzer will sound in a different tone for 20 more seconds.
Tire pressure warning light
When the light comes on:
Low tire inflation pressure such
as • Natural causes ( P. 4 76 )
• Flat tire ( P. 5 0 4 )
Adjust the tire inflation pressure
to the specified level.
The light will turn off after a
few minutes. In case the light
does not turn off even if the
tire inflation pressure is
adjusted, have the system
checked by your Lexus
dealer.
When the light comes on after
blinking for 1 minute:
Malfunction in the tire pressure
warning system
Have the system checked by
your Lexus dealer.
Warning lightWarning light/DetailsCorrection procedure

4767-2. Steps to take in an emergency
GS350_OM_OM30E15U_(U)
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural
air leaks and tire inflation pressure changes caused by temperature. In this case,
adjusting the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with a tire pressure warning valve and trans-
mitter. If a tire goes flat, the tire pressure warning light will not turn off even though
the flat tire has been replaced with the spare tire.
■Conditions that the tire pressure warning system may not function properly
 P. 4 1 6
■If the tire pressure warning light freque ntly comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when
the engine switch is turned to IGNITION ON mode, have it checked by your Lexus
dealer.
■Warning buzzer
In some cases, the buzzer may not be he ard because of noisy place or an audio
sound.
■Customization
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features: P. 5 6 1 )

4817-2. Steps to take in an emergency
GS350_OM_OM30E15U_(U)
7
When trouble arises
A buzzer sounds and a warning message is shown on the multi-informa-
tion display. The following warning in dicates the possibility of damage to
the vehicle that may lead to an acci dent. Immediately stop the vehicle in a
safe place and contact your Lexus dealer.
Stop the vehicl e immediately.
Wa r n i n g m e s s a g eDetails
Indicates abnormal engine oil pressure
The warning light may come on if the engine oil
pressure is too low.

4887-2. Steps to take in an emergency
GS350_OM_OM30E15U_(U)
Indicates that the trunk is
not fully closedIf the vehicle reaches a
speed of 3 mph (5
km/h), flashes
and a buzzer sounds
to indicate that the
trunk is not yet fully
closed.
Close the trunk.
Indicates that the win-
dows are not fully closed
(with the engine switch
off, and the driver’s door
open)
Close all the windows.
Indicates that the moon
roof is not fully closed
(with the engine switch
off, and the driver’s door
open)
Close the moon roof.
Indicates that the win-
dows and the moon roof
are not fully closed (with
the engine switch off, and
the driver’s door open)
Close all the windows
and the moon roof.
Wa r n i n g m e s s a g eDetailsCorrection procedure
(Flashes)
(Flashes)
(Flashes)

4897-2. Steps to take in an emergency
GS350_OM_OM30E15U_(U)
7
When trouble arises
Indicates that the parking
brake is still engagedIf the vehicle reaches a
speed of 3 mph
(5 km/h),
flashes and a buzzer
sounds to indicate that
the parking brake is
still engaged.
Release the parking
brake.
Indicates that the parking
brake system has over-
heatedWait until the system
cools down.
Indicates that shift range 1
has been selected with
the shift lever in M when
driving on slippery road
surfaces.The range will not be
downshifted and
remain 2.
Drive with the shift range
higher than 2.
Indicates that engine oil
level is lowCheck the level of engine
oil, and add if necessary.
Wa r n i n g m e s s a g eDetailsCorrection procedure
(Flashes)
(U.S.A.)
(Flashes)
(Canada)
(Flashes)

4927-2. Steps to take in an emergency
GS350_OM_OM30E15U_(U)
(If equipped)
Indicates that the LKA
(Lane-Keeping Assist)
system detects no-
handed driving (while the
lane keeping assist func-
tion is operating)The warning buzzer
sounds twice.
Grip the steering wheel
firmly.
(If equipped)
Indicates that the Blind
Spot Monitor sensors or
the surrounding area on
the bumper is dirty or
covered with ice
Clean the sensor and its
surrounding area on the
bumper.
Indicates that remaining
fuel is approximately 2.6
gal. (10.0 L, 2.2 Imp.gal.)
or less
Refuel the vehicle.
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
Tu r n t h e l i g h t s o f f .
Indicates that the driver’s
door was opened with the
shift position in any posi-
tion other than P
Shift the shift position to P.
Wa r n i n g m e s s a g eDetailsCorrection procedure
(Flashes)
(Flashes)

4937-2. Steps to take in an emergency
GS350_OM_OM30E15U_(U)
7
When trouble arises
■Warning message in radar cruise mode (if equipped)
In the following cases, the warning message may not be displayed even if vehicle-to-
vehicle distance decreases:
●When your vehicle and the vehicle ahead are traveling at the same speed or the
vehicle ahead is traveling more quickly than your vehicle
●When the vehicle ahead is traveling at a very low speed
●Immediately after cruise control speed is set
●At the instant the accelerator pedal is depressed
■The LKA (Lane-Keeping Assist) lane departure warning function (if equipped)
In the following cases, the warning message will not be displayed even if a lane line is
crossed.
●When the vehicle speed deviates from the operating range of the LKA system
functions
●When the lane lines cannot be recognized
●When the steering wheel is turned as far as necessary to cause the vehicle to
change lanes
■Open door warning message
The open door warning message continues to display until a door or the trunk is fully
closed, even if the engine switch is turned off. However, approximately 20 minutes
after a door or the trunk is not fully closed , the battery-saving function operates and
the display turns off even though a door or the trunk is not fully closed.

4957-2. Steps to take in an emergency
GS350_OM_OM30E15U_(U)
7
When trouble arises
Wa r n i n g m e s s a g eDetailsCorrection procedure
(If equipped)
Indicates that the tire
inflation pressure is lowCheck the tire inflation
pressure, and adjust to
the appropriate level.
(If equipped)
Indicates a malfunction in
the tire pressure warning
system
Stop the vehicle in a safe
place and turn the engine
switch off then on again.If the tire pressure
warning indicator
flashes for 1 minute
then illuminates, there
is a malfunction in the
system. Have the vehi-
cle inspected at your
Lexus dealer.
(If equipped)
Indicates that the tire
position information can-
not be recognized
Drive for a short while
and check if the display
updates.If the radio wave condi-
tions improve, the dis-
play may return to
normal. If the tire pres-
sure is still not dis-
played after driving for
several minutes, stop
the vehicle in a safe
place, turn the engine
switch off then on
again, and start driving.
If the tire pressure is still
not displayed even
after repeating this sev-
eral times, have the
vehicle inspected at
your Lexus dealer.

4977-2. Steps to take in an emergency
GS350_OM_OM30E15U_(U)
7
When trouble arises
After taking the specified steps to correct the suspected problem, check
that the warning message and light go off.
Have the malfunction repaired immediately.
Interior buzzerExterior
buzzerWa r n i n g m e s s a g eDetailsCorrection procedure
Once
The electronic key
is not detected
when an attempt is
made to start the
engine.Start the
engine with
the elec-
tronic key
present.
Once3
times
The electronic key
was carried out-
side the vehicle and
a door other than
the driver’s door
was opened and
closed while the
engine switch was
in a mode other
than off.
Bring the
electronic
key back
into the
vehicle.
The driver’s door
was opened and
closed while the
electronic key was
not in the vehicle,
the shift lever was in
P and the engine
switch was not
turned off.Tu r n t h e
engine
switch off or
bring the
electronic
key back
into the
vehicle.
(Flashes)
(Flashes)

4987-2. Steps to take in an emergency
GS350_OM_OM30E15U_(U)
InteriorbuzzerExterior
buzzerWa r n i n g m e s s a g eDetailsCorrection procedure
OnceCon-
tinuous
An attempt was
made to exit the
vehicle with the
electronic key and
lock the doors with-
out first turning the
engine switch off
when the shift lever
was in P.
Tu r n t h e
engine
switch off
and lock the
doors again.
9
times
An attempt was
made to drive when
the regular key was
not inside the vehi-
cle.Confirm
that the
electronic
key is inside
the vehicle.
Con-
tinuous
The driver’s door
was opened when
the shift lever was
not in P and the
engine switch was
not turned off.
Shift the
shift lever to
P.
(Displayed alternately)
(Flashes)
(Flashes)
(Flashes)