2019 LEXUS RX350 check engine

190 3-5. Opening, closing the windows and moon roof
RX350/RX350L_U WARNING
Observe the following precautions.
Failing to do so may result in death or serious injury.■
Opening and closing the windows ●
The driver is responsible for all the power window operations, including the operation
for the passengers. In order to prevent acci dental operation, espe cially by a child, do
not let a child operate the power windows. It is possible for children and other passen-
gers to have body parts caught in the powe r window. Also, when riding with a child, it
is recommended to use the window lock switch. (  P. 187)
●
When using the wireless remote control or mechanical key and operating the power
windows, operate the power window after checking to make sure that there is no pos-
sibility of any passenger having any of their body parts caught in the window. Also do
not let a child operate power window by the wireless remote control or mechanical
key. It is possible for child ren and other passengers to get caught in the power win-
dow. ●
When exiting the vehicle, turn the engine sw itch off, carry the ke y 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 intentionally activate the jam protection function. ●
The jam protection function may not work if something gets jammed just before the
window is fully closed. Be careful not to get any part of your body jammed in the win-
dow. ■
Catch protection function ●
Never use any part of your body or clothing to intentionally activate the catch protec-
tion function. ●
The catch protection function may not work if something gets caught just before the
window is fully opened. Be ca reful not to get any part of your body or clothing caught
in the window. ●
Check to make sure th at all passengers do
not have any part of their body in a position
where it could be caught when a window is
being operated.

1933-5. Opening, closing the windows and moon roof
3
Operation of each component
RX350/RX350L_U ■
When the moon roof does not close normally
Perform the following procedure: ●
If the moon roof closes but then re-opens slightly
Stop the vehicle.
Press and hold the “CLOSE” switch.
* 1
The moon roof will close, reopen an d pause for approximately 10 seconds.
* 2
Then it
will close again, tilt up and pause for approx imately 1 second. Finally, it will tilt down,
open and close.
Check to make sure that the moon roof is completely closed and then release the
switch. ●
If the moon roof tilts do wn but then tilts back up
Stop the vehicle.
Press and hold the “UP” switch
* 1
until the moon roof moves into the tilt up position
and stops.
Release the “UP” switch once and then press and hold the “UP” switch again.
* 1
The moon roof will pause fo r approximately 10 seconds in the tilt up position.
* 2
Then it will adjust slightly and pause for approximately 1 second. Finally, it will tilt
down, open and close.
Check to make sure that the moon roof is completely closed and then release the
switch.
* 1
: If the switch is released at the incorrect time, the pr ocedure will have to be per-
formed again from the beginning.
* 2
: If the switch is released after the above mentioned 10 second pause, automatic
operation will be disabled. In that case, press and hold the “CLOSE” or “UP” switch,
and the moon roof will tilt up and pause for approximately 1 second. Then it will tilt
down, open and close. Check to make sure that the moon roof is completely closed
and then release the switch.
If the moon roof does not fully close even after performing the above procedure cor-
rectly, have the vehicle inspected by your Lexus dealer. ■
Alarm
The alarm may be triggered if the alarm is se t and the moon roof is closed using the door
lock linked moon roof operation function. (  P. 77)■
Moon roof open warning buzzer
A buzzer sounds and a message is shown on the multi-information display in the instru-
ment cluster when the engine switch is turned off and the driver’s door is opened with the
moon roof open. ■
Customization
Some functions can be customized. (  P. 722)1
2
3
1
2
3
4

194 3-5. Opening, closing the windows and moon roof
RX350/RX350L_U WARNING
Observe the following precautions.
Failing to do so may cause death or serious injury. ■
Opening the moon roof ●
Do not allow any passengers to put their hands or heads outside the vehicle while it is
moving. ●
Do not sit on top of the moon roof. ■
Opening and 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 oper-
ate the moon roof. It is possible for child ren and other passengers to have body parts
caught in the moon roof.
■
Jam protection function ●
Never use any part of your body to intentionally activate the jam protection function. ●
The jam protection function may not work if something gets caught just before the
moon roof is fully closed. Also, the jam prot ection function is not designed to operate
while the switch is being pressed. Take care so that your fingers, etc. do not get
caught. ●
Check to make sure th at all passengers do
not have any part of their body in a position
where it could be caught when the moon roof
is being operated. ●
When using the wireless remote control or
mechanical key and operating the moon roof,
operate the moon roof after checking to
make sure that there is no possibility of any
passenger having any of their body parts
caught in the moon roof. Also, do not let a
child operate moon roof by the wireless
remote control or mechanical key. It is possi-
ble for children and other passengers to get
caught in the moon roof. ●
When exiting the vehicle, turn the engine
switch off, carry the ke y and exit the vehicle
along with the child. There may be accidental
operation, due to mischief, etc., that may pos-
sibly lead to an accident.

1973-5. Opening, closing the windows and moon roof
3
Operation of each component
RX350/RX350L_U ■
Closing both the panoramic moon roof and electronic sunshade
Slide the
switch forward.
The electronic sunshade will close to the half-open position and pause. The panoramic
moon roof will then fully close. Then the electronic sunshade will fully close.■
When the panoramic moon roof or electronic sunshade does not close normally
Perform the following procedure:
Stop the vehicle.
Turn the engine switch to IGNITION ON mode.
Slide and hold the switch or swit ch forward. Continue pressing the
switch for approximately 10 seconds afte r the panoramic moon roof or electronic
sunshade closes and reopens. The panora mic moon roof and electronic sunshade
will start to close.
*Check that the panoramic moon roof and electronic sunshade are fully closed and
release the switch.
* : If the switch is released at the incorrect time, the pr ocedure will have to be per-
formed again from the beginning.
If the panoramic moon roof or electronic sunshade does not fully close even after per-
forming the above procedure correctly, have the vehicle inspected by your Lexus dealer. ■
Alarm
A alarm may be triggered if the alarm is set and the panoramic moon roof is closed using
the door lock linked panoramic m oon roof operation function. (  P. 77)■
Panoramic moon roof open warning buzzer
The buzzer sounds and a message is shown on the multi-information display in the instru-
ment cluster when the engine switch is turned off and the driver’s door is opened with the
panoramic moon roof open. ■
Customization
Some functions can be customized. (  P. 722)1
2
3
4

198 3-5. Opening, closing the windows and moon roof
RX350/RX350L_U WARNING
Observe the following precautions.
Failing to do so may cause death or serious injury. ■
Opening and closing the electronic sunshade
■
Opening and closing the panoramic moon roof ●
The driver is responsible for panoramic mo on roof opening and closing operations.
In order to prevent accidental operation, especially by a child, do not let a child oper-
ate the panoramic moon roof. It is possibl e for children and othe r passengers to have
body parts caught in the panoramic moon roof.
■
Jam protection function ●
Never use any part of your body to intentionally activate the jam protection function. ●
The jam protection function may not work if something gets caught just before the
panoramic moon roof or electronic sunshade is fully closed. Also, the jam protection
function is not designed to operate while the switch is being presse d. Take care so that
your fingers, etc. do not get caught. ●
Check to make sure th at all passengers do
not have any part of their body in a position
where it could be caught when the electronic
sunshade is being operated. ●
Do not let a child operate the electronic sun-
shade. Closing the electronic sunshade on
someone can cause death or serious injury.
●
Check to make sure th at all passengers do
not have any part of their body in a position
where it could be caught when the panoramic
moon roof is being operated. ●
When using the wireless remote control or
mechanical key and operating the panoramic
moon roof, operate th e panoramic moon roof
after checking to make sure that there is no
possibility of any passenger having any of
their body parts caught in the panoramic
moon roof. Also, do not let a child operate
panoramic moon roof by the wireless remote
control or mechanical key. It is possible for
children and other passengers to get caught
in the panoramic moon roof. ●
When exiting the vehicle, turn the engine
switch off, carry the ke y and exit the vehicle
along with the child. There may be accidental
operation, due to mischief, etc., that may pos-
sibly lead to an accident.

2054-1. Before driving
4
Driving
RX350/RX350L_U WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury. ■
When starting the vehicle
Always keep your foot on the brake pedal while stopped engine running. This prevents
the vehicle from creeping. ■
When driving the vehicle ●
Do not drive if you are unfamiliar with the location of the brake and accelerator ped-
als to avoid depressing the wrong pedal.
• Accidentally depressing the accelerator pedal instead of the brake pedal will
result in sudden acceleration that may lead to an accident.
• When backing up, you may twist your body around, leading to difficulty in operat-
ing the pedals. Make sure to operate the pedals properly.
• Make sure to keep a correct driving po sture even when moving the vehicle only
slightly. This allows you to depress th e brake and accelerator pedals properly.
• Depress the brake pedal using your right foot. Depressing the brake pedal using
your left foot may delay re sponse in an emergency, resulting in an accident.●
Do not drive the vehicle over or stop the vehicle near flammable materials.
The exhaust system and exhaust gases can be extremely hot. These hot parts may
cause a fire if there is any flammable material nearby. ●
During normal driving, do not turn off the engine. Turning the engi ne 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. 645●
Use engine braking (downshift) to maintain a safe speed when driving down a steep
hill.
Using the brakes continuously may cause th e brakes to overheat and lose effective-
ness. (  P. 240)●
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, he ads or other parts of their body are not
outside the vehicle. ●
AWD models: Do not drive the vehicle off-road.
This is not an AWD vehicle designed for of f-road driving. Proceed with all due cau-
tion if it becomes unavoidable to drive off-road. ●
Do not drive across a river or through other bodies of water.
This may cause electric/elect ronic components to short ci rcuit, damage the engine or
cause other serious damage to 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 no t before driving at such speeds.

206 4-1. Before driving
RX350/RX350L_U WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury. ■
When driving on slippery road surfaces ●
Sudden braking, acceleration and steering may cause tire slippage and reduce your
ability to control the vehicle. ●
Sudden acceleration, engine braking due to shifting, or changes in engine speed
could cause the vehicle to skid. ●
After driving through a puddle , lightly depress the brake pe dal to make sure that the
brakes are functioning properly. Wet brake pads may prevent the brakes from func-
tioning properly. If the brakes on only on e side are wet and not functioning properly,
steering control may be affected. ■
When shifting the shift lever ●
Do not let the vehicle roll backward while the shift lever is in a driving position, or roll
forward while the shift lever is in R.
Doing so may cause the engine to stall or lead to poor brake and steering perfor-
mance, resulting in an accide nt or damage to the vehicle.●
Do not shift the shift lever to P while the vehicle is moving.
Doing so can damage the transmission and may result in a loss of vehicle control.●
Do not shift the shift lever to R while the vehicle is moving forward.
Doing so can damage the transmission and may result in a loss of vehicle control.●
Do not shift the shift lever to a driving posi tion while the vehicle is moving backward.
Doing so can damage the transmission and may result in a loss of vehicle control.●
Shifting the shift lever to N while the ve hicle is moving will disengage the engine.
Engine braking is not avai lable when N is selected.●
Be careful not to shift the shift lever with the accelerator pedal depressed.
Shifting the shift lever to any position other than P or N may lead to unexpected rapid
acceleration of the vehicle that may cause an accident and result in death or serious
injury. ■
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 possible.
Rotor damage may result if the pads are not replaced when needed.
It is dangerous to drive the vehicle when the wear limits of the brake pads and/or those
of the brake discs are exceeded.

2094-1. Before driving
4
Driving
RX350/RX350L_U NOTICE ■
When driving the vehicle ●
Do not depress the accelerator and brake pedals at the same time during driving, as
this may restrain driving torque. ●
Do not use the accelerator pedal or depre ss the accelerator and brake pedals at the
same time to hold the vehicle on a hill. ■
When parking the vehicle
Always set the parking brake and shift the shift lever to P. Failure to do so may cause the
vehicle to move or the vehicle may accelerate suddenly if the accelerator pedal is acci-
dentally depressed. ■
Avoiding damage to vehicle parts ●
Do not turn the steering wheel fully in either direction and hold it there for an
extended period of time.
Doing so may damage the power steering motor. ●
When driving over bumps on the road, drive as slowly as possible to avoid damaging
the wheels, underside of the vehicle, etc. ■
If you get a flat tire while driving
A flat or damaged tire may cause the following situations . Hold the steering wheel
firmly and gradually depress the brake pedal to slow down the vehicle. ●
It may be difficult to control your vehicle. ●
The vehicle will make abnormal sounds or vibrations. ●
The vehicle will lean abnormally.
Information on what to do in case of a flat tire (  P. 666)■
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, transaxle, transfer
(AWD models), rear differential (AWD models), etc. ●
Lubricant condition for the propeller shaf t (AWD models), bearings and suspension
joints (where possible), and the func tion of all joints, bearings, etc.