check engine Lexus GS350 2015 TIPS FOR THE NAVIGATION SYSTEM / LEXUS 2015 GS350 (OM30E15U) User Guide

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2. Instrument cluster
■Head-up display
●The head-up display may seem dark and hard to see when viewed through sun-
glasses, especially polarized sunglasses.
Adjust the brightness of the head-up display or remove your sunglasses.
●When the head-up display is turned off, it will remain off even if the engine switch is
turned to IGNITION ON mode after th e engine switch has been turned off.
●The startup image will be displayed on the head-up display after the engine switch
has been turned to IGNITION ON mode wh ile the head-up display switch is set to
on.
■When the battery is disconnected
The customize settings of the head-up display will be reset.
CAUTION
■Before using the head-up display
Check that the position and brightness of the head-up display image does not
interfere with safe driving. Incorrect adjustment of the image’s position or bright-
ness may obstruct the driver’s view and lead to an accident, resulting in death or
serious injury.
NOTICE
■To prevent damage to components
●Do not place any drinks near the head-up
display projector. If the projector gets wet,
electrical malfunctions may result.
●Do not place anything on or put stickers
onto the head-up display projector.
Doing so could interrupt head-up display
indications.
●Do not touch the inside of the head-up dis-
play projector or thrust sharp edges or the
like into the projector.
Doing so could cause mechanical malfunc-
tions.

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3-2. Opening, closing and locking the doors and trunk
CAUTION
■Trunk easy closer (vehicles with power trunk opener and closer)
■Power trunk opener and closer (if equipped)
Observe the following precautions when operating the power trunk opener and
closer.
Failure to do so may cause serious injury.
●Check the safety of the surrounding area to make sure there are no obstacles or
anything that could cause any of your belongings to get caught.
●If anyone is in the vicinity, make sure they are safe and let them know that the
trunk is about to open or close.
●If the trunk closer switch is pressed whil e the trunk lid is opening during automatic
operation, the trunk lid stops opening. Take extra care when on an incline, as the
trunk lid may open or close suddenly.
●On an incline, the trunk lid may suddenly shut after it opens automatically. Make
sure the trunk lid is fully open and secure before using the trunk.
●In the following situations, the power trunk opener and closer may detect an
abnormality and automatic operation may be stopped. In this case, the trunk lid
has to be operated manually. Take extra care in this situation, as the stopped trunk
lid may suddenly shut, causing an accident.
• When the trunk lid contacts an obstacle
• When the battery voltage suddenly drops, such as when the engine switch is
turned to IGNITION ON mode or the engine is started during automatic
operation
●Do not attach any accessories other than genuine Lexus parts to the trunk lid. The
power trunk opener and closer may not op erate, causing itself to malfunction, or
the trunk lid may suddenly shut again after it is opened.
In the event that the trunk lid is left slightly
open, the trunk easy closer will automatically
close it to the fully closed position. It takes
several seconds before the trunk easy closer
begins to operate. Be careful not to catch fin-
gers or anything else in the trunk lid, as this
may cause bone fractures or other serious
injuries.

GS350_OM_OM30E15U_(U)
1373-3. Adjusting the seats
3
Operation of each component
■Operation of the power easy access system
When exiting the vehicle, the power easy access system may not operate if the seat
is already close to the rearmost position, etc.
■Customization
The seat movement amount settings of the power easy access system can be cus-
tomized. (Customizable features:  P. 5 6 1 )
Your preferred driving position (the po sition of the driver’s seat, steering
wheel and outside rear view mirrors) can be recorded and recalled by
pressing a button.
Three different driving positions can be recorded into memory.
■Recording procedure
Check that the shift lever is in P.
Turn the engine switch to IGNITION ON mode.
Adjust the driver’s seat, steering wheel, and outside rear view mirrors
to the desired positions.
While pressing the “SET” but-
ton, or within 3 seconds after
the “SET” button is pressed,
press button “1”, “2” or “3” until
the buzzer sounds.
If the selected button has already
been preset, the previously
recorded position will be overwrit-
ten.
Vehicles with the driving position memory for the front passenger’s
seat: To record the position of the fr ont passenger’s seat, adjust the front
passenger’s seat to the desired po sition and perform step using the
buttons on the front passenger’s side.
Driving position memory
1
2
3
4
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3-3. Adjusting the seats
■Recall procedureCheck that the shift lever is in P.
Turn the engine switch to IGNITION ON mode.
Press one of the buttons for the
driving position you want to
recall until the buzzer sounds.
■To stop the position recall operation part-way through
Perform any of the following:
●Press the “SET” button.
●Press button “1”, “2” or “3”.
●Operate any of the seat adju stment switches (only cancels seat position recall).
●Operate the tilt and telescopic steering co ntrol switch (only cancels steering wheel
position recall).
■Seat positions that can be memorized (  P. 1 3 4 )
Vehicles without seatback si de support adjustment switch
The adjusted positions other than the position adjusted by lumbar support switch can
be recorded.
Vehicles with seatback side support adjustment switch
All adjusted positions can be recorded.
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2
3

GS350_OM_OM30E15U_(U)
1393-3. Adjusting the seats
3
Operation of each component
■Operating the driving position memory after turning the engine switch off
Driver’s seat:
Recorded seat positions can be activated up to 180 seconds after the driver’s door is
opened and another 60 seconds after it is closed again.
Front passenger’s seat:
Recorded seat positions can be activated up to 180 seconds after the front passen-
ger’s door is opened.
■In order to correctly use the dr iving position memory function
If a seat position is already in the furthest possible position and the seat is operated in
the same direction, the recorded position ma y be slightly different when it is recalled.
Each electronic key can be registered to recall your preferred driving
position.
■Registering procedure
Record your driving position to button “1”, “2” or “3” before performing
the following:
Carry only the key you want to regis ter, and then close the driver’s door.
If 2 or more keys are in the vehicle, the driving position cannot be
recorded properly.
Check that the shift lever is in P.
Turn the engine switch to IGNITION ON mode.
Recall the driving position th at you want to record.
Memory recall function (driver’s side only)
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2
3

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3-5. Opening, closing the windows and moon roof
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■Closing the windows
●The driver is responsible for all the powe r window operations, including the oper-
ation for the passengers. In order to prev ent accidental operation, especially by a
child, do not let a child operate the power windows. It is possible for children and
other passengers to have body parts caught in the power window. Also, when
riding with a child, it is recommended to use the window lock switch. ( P. 1 5 1 )
●Check to make sure that all passengers do not have any part of their body in a
position where it could be caught when a window is being operated.
●When using the mechanical key and operating the power windows, operate the
power window after checking to make sure that there is no possibility of any pas-
senger having any of their body parts caugh t in the window. Also do not let a child
operate window by the mechanical key. It is possible for children and other pas-
sengers to get caught in the power window.
●When exiting the vehicle, turn the engine switch off, carry the key and exit the
vehicle along with the child. There may be accidental operation, due to mischief,
etc., that may possibly lead to an accident.
■Jam protection function
●Never use any part of your body to inte ntionally activate the jam protection func-
tion.
●The jam protection function may not work if something gets caught just before
the window fully closes.

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3-5. Opening, closing the windows and moon roof
■Moon roof open warning buzzer
The buzzer sounds and a message is shown on the multi-information display in the
instrument cluster wh en the engine switch is turned off and the driver’s door is
opened with the moon roof open.
■Customization
Settings (e.g. linked door lock operation) can be changed.
(Customizable features: P. 5 6 1 )
CAUTION
Observe the following precautions.
Failure to do so may cause death or serious injury.
■Opening the moon roof
●Do not allow any passengers to put thei r hands or heads outside the vehicle while
it is moving.
●Do not sit on top of the moon roof.
■Closing the moon roof
●The driver is responsible for moon roof opening and closing operations.
In order to prevent accidental operation, especially by a child, do not let a child
operate the moon roof. It is possible for children and other passengers to have
body parts caught in the moon roof.
●Check to make sure that all passengers do not have any part of their body in a
position where it could be caught wh en the moon roof is being operated.
●When using the mechanical key and oper ating the moon roof, operate the moon
roof after checking to make sure that there is no possibility of any passenger hav-
ing any of their body parts caught in the moon roof. Also, do not let a child oper-
ate moon roof by the mechanical key. It is possible for children and other
passengers to get caught in the moon roof.
●When exiting the vehicle, turn the engine switch off, carry the key and exit the
vehicle along with the child. There may be accidental operation, due to mischief,
etc., that may possibly lead to an accident.
■Jam protection function
●Never use any part of your body to inte ntionally activate the jam protection func-
tion.
●The jam protection function may not work if something gets caught just before
the moon roof fully closes.

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4-1. Before driving
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When driving the vehicle
●During normal driving, do not turn off the engine. Turning the engine off while
driving will not cause loss of steering or braking control, but the power assist to
these systems will be lost. This will make it more difficult to steer and brake, so you
should pull over and stop the vehicle as soon as it is safe to do so.
However, in the event of an emergency, such as if it becomes impossible to stop
the vehicle in the normal way: P. 4 6 1
●Use engine braking (downshift) to maintain a safe speed when driving down a
steep hill.
Using the brakes continuously may cause the brakes to overheat and lose effec-
tiveness. ( P. 1 8 4 )
●Do not adjust the positions of the steering wheel, the seat, or the inside or outside
rear view mirrors while driving.
Doing so may result in a loss of vehicle control.
●Always check that all passengers’ arms, heads or other parts of their body are not
outside the vehicle.
●Do not drive in excess of the speed limit. Even if the legal speed limit permits it, do
not drive over 85 mph (140 km/h) unless your vehicle has high-speed capability
tires. Driving over 85 mph (140 km/h) may result in tire failure, loss of control and
possible injury. Be sure to consult a tire dealer to determine whether the tires on
your vehicle are high-speed capability tires or not before driving at such speeds.

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4-1. Before driving
CAUTION
■If you hear a squealing or scraping noise (brake pad wear limit indicators)
Have the brake pads checked and replaced by your Lexus dealer as soon as possi-
ble.
Rotor damage may result if the pads are not replaced when needed.
Front brakes only: Moderate levels of brake pad and disc wear allow enhanced
front braking power. As a result, the discs may wear more quickly than conven-
tional brake discs. Therefore, when replacing the brake pads, Lexus recommends
that you also have the thickness of the discs measured.
It is dangerous to drive the vehicle when the wear limits of the brake pads and/or
those of the brake discs are exceeded.
■When the vehicle is stopped
●Do not race the engine.
If the vehicle is in any gear other than P or N, the vehicle may accelerate suddenly
and unexpectedly, causing an accident.
●In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while the engine is running, and apply the parking
brake as necessary.
●If the vehicle is stopped on an incline, in order to prevent accidents caused by the
vehicle rolling forward or backward, always depress the brake pedal and securely
apply the parking brake as needed.
●Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped may cause the
exhaust system to overheat, which could result in a fire if combustible material is
nearby.

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4-1. Before driving
NOTICE
■When encountering flooded roads
Do not drive on a road that has flooded after heavy rain etc. Doing so may cause
the following serious damage to the vehicle:
●Engine stalling
●Short in electrical components
●Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle is flooded, be sure to
have your Lexus dealer check the following:
●Brake function
●Changes in quantity and quality of oil and fluid used for the engine, transmission,
transfer (AWD models), differential, etc.
●Lubricant condition for the propeller shaft, bearings and suspension joints (where
possible), and the function of all joints, bearings, etc.