2020 LEXUS RX450H warning

2394-2. Driving procedures
4
Driving
RX350/RX350L_U
■If the shift lever cannot be shifted from P
First, check whether the brake pedal is being depressed.
If the shift lever cannot be shifted with your foot on the brake pedal, there may be a prob-
lem with the shift lock system. Have the vehi cle inspected by your Lexus dealer immedi-
ately.
The following steps may be used as an emergency measure to ensure that the shift lever
can be shifted.
Releasing the shift lock:
Turn the engine switch to IGNITION ON mode and check that the parking brake is
set. ( P. 232, 247)
Turn the engine switch to off.
Depress the brake pedal.
■AI-SHIFT
The AI-SHIFT automatically se lects the suitable gear according to driver performance
and driving conditions.
The AI-SHIFT automatically operates when the sh ift lever is in D. (Shifting the shift lever
to the S position cancels the function.)
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Pry the cover up with a flathead screwdriver
or equivalent tool.
To prevent damage to the cover, cover the tip
of the screwdriver with a rag.
Press the shift lock override button.
The shift lever can be shifted while the button
is pressed
WARNING
■When driving on slippery road surfaces
Be careful of downshifting an d sudden acceleration, as this could result in the vehicle
skidding to the side or spinning.
■To prevent an accident wh en releasing the shift lock
Before pressing the shift lock override butto n, make sure to set the parking brake and
depress the brake pedal.
If the accelerator pedal is accidentally depressed instead of the brake pedal when the
shift lock override button is pressed and the shift lever is shifted out of P, the vehicle
may suddenly start, possibly leading to an a ccident resulting in death or serious injury.
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2434-2. Driving procedures
4
Driving
RX350/RX350L_U
■Automatic deactivation of shift range selection in the D position
Shift range selection in the D position will be deactivated in the following situations:
●The “+” paddle shift switch is held down for a period of time
●When the vehicle comes to a stop
●If the accelerator pedal is depressed fo r more than a certain period of time
●When the shift lever is shifted to a position other than D
■To protect the automatic transmission
If the automatic transmission fluid temperature is high, “Transmission Fluid Temp High
See Owner’s Manual” will be displayed on the multi-information display and the vehicle
will go into transmission protection mode automatically. Have the vehicle inspected by
your Lexus dealer.
■Downshifting restriction warning buzzer
To help ensure safety and driving performance, downshifti ng operation may sometimes
be restricted. In some circum stances, downshifting may not be possible even when the
shift lever or paddle shif t switch is operated. (A buzzer will sound twice.)
■When driving with dynamic radar cruise control with full-speed range activated
Even when performing the following actions with the intent of enabling engine braking,
engine braking will not occur because dynamic radar cruise control with full-speed
range will not be canceled.
●While driving in D position, downshifting to 7, 6, 5 or 4. ( P. 300)
●When switching the driving mode to spor t mode while driving in the D position
(  P. 373)
■Restraining sudden start (Drive-Start Control)
When the following unusual operation is performed, the engine output may be
restrained.
●When the shift lever is shifted from R to D, D to R, N to R, P to D, or P to R (D includes
M) with the accelerator pedal depressed, a warning message appears on the multi-
information display. If a wa rning message is shown on the multi-information display,
read the message and follow the instructions.
●When the accelerator pedal is depressed too while the vehicle is in reverse.
■Shift lock system
The shift lock system is a system to prevent ac cidental operation of the shift lever in start-
ing.
The shift lever can be shifted from P only when the engine switch is in IGNITION ON
mode and the brake pedal is being depressed.

2454-2. Driving procedures
4
Driving
RX350/RX350L_U
WARNING
■When driving on slippery road surfaces
Be careful of downshifting and sudden acceleration, as this could result in the vehicle
skidding to the side or spinning.
■To prevent an accident wh en releasing the shift lock
Before pressing the shift lock override butto n, make sure to set the parking brake and
depress the brake pedal.
If the accelerator pedal is accidentally depressed instead of the brake pedal when the
shift lock override button is pressed and the shift lever is shifted out of P, the vehicle
may suddenly start, possibly leading to an a ccident resulting in death or serious injury.

2494-2. Driving procedures
4
Driving
RX350/RX350L_U
■Parking brake indicator light and parking brake light
●Depending on the engine switch mode, the parking brake indicator light and parking
brake light will turn on and stay on as described below:
IGNITION ON mode: Comes on until the parking brake is released.
Not in IGNITION ON mode: Stays on for approximately 15 seconds.
●When the engine switch is turned off with the parking brake set, the parking brake indi-
cator light and parking brake light will stay on for about 15 seconds. This does not indi-
cate a malfunction.
■Changing the mode
When changing the automatic mode on/off , the message will be shown on the multi-
information display and the buzzer sounds.
■Parking brake engaged warning buzzer
A buzzer will sound if the vehicle is driv en with the parking brake engaged. “Release
Parking Brake” is displayed on the multi-information display.
■Warning messages and buzzers
Warning messages and buzzers are used to indicate a system malfunction or to inform
the driver of the need for caution. If a warn ing message is shown on the multi-information
display, read the message and follow the instructions.
■If the brake system warning light comes on
P. 654
■Usage in winter time
P. 385
WARNING
■When parking the vehicle
Do not leave a child in the vehicle alone. The parking brake may be released uninten-
tionally and there is the danger of the ve hicle moving that may lead to an accident
resulting in death or serious injury.
■Parking brake switch
Do not set any objects near the parking br ake switch. Objects may interfere with the
switch and may lead the parking brake to unexpectedly operate.
NOTICE
■When parking the vehicle
Before you leave the vehicle, shift the shif t lever to P, set the parking brake and make
sure that the vehicle does not move.
■When the system malfunctions
Stop the vehicle in a safe place and check the warning messages.
■When the parking brake cannot be released due to a malfunction
Driving the vehicle with the parking brake se t will lead to brake components overheat-
ing, which may affect bra king performance and increase brake wear. Contact your
Lexus dealer immediately if this occurs.

2504-2. Driving procedures
RX350/RX350L_U
Turns the brake hold system on
The brake hold standby indicator
(green) comes on. Wh ile the system is
holding the brakes, the brake hold oper-
ated indicator (yellow) will illuminate.
■Brake hold system operating conditions
The brake hold system cannot be turn ed on in the following conditions:
●The driver’s door is not closed.
●The driver’s seat seat belt is not buckled.
If either of the conditions above are detected when the brake hold system is enabled, the
system will turn off and the brake hold standby in dicator light will go off. In addition, if any
of the conditions are detected while the sy stem is holding the brakes, a warning buzzer
will sound and a message will be shown on th e multi-information display. The parking
brake will then be set automatically.
■Brake hold function
●If the brake pedal is left released for a pe riod of about 3 minutes after the system has
started holding the brakes, the parking brake will be set automatically. In this case, a
warning buzzer sounds and a message is shown on the multi-information display.
●To turn the system off while the system is holding the brakes, firmly depress the brake
pedal and press the switch again.
●The brake hold function may not hold the vehicle when the vehicle is on a steep incline.
In this situation, it may be necessary for the driver to apply the brakes. A warning
buzzer will sound and the mult i-information display will inform the driver of this situa-
tion. If a warning message is shown on the multi-information display, read the message
and follow the instructions.
Brake Hold
Vehicles without paddle shift switches
The brake hold system keeps the brake appl ied when the shift lever is in D, S or
N with the system on and the brake peda l has been depressed to stop the vehi-
cle. The system releases the brake wh en the accelerator pedal is depressed
with the shift lever in D or S to allow smooth start off.
Vehicles with paddle shift switches
The brake hold system keeps the brake a pplied when the shift lever is in D, M
or N with the system on and the brake pedal has been depressed to stop the
vehicle. The system releases the brake when the accelerator pedal is
depressed with the shif t lever in D or M to allow smooth start off.

2514-2. Driving procedures
4
Driving
RX350/RX350L_U
■When the parking brake is set automatically while the system is holding the brakes
Perform any of the following operat ions to release the parking brake.
●Depress the accelerator pedal. (The parking brake will not be released automatically if
the seat belt is not fastened.)
●Operate the parking brake switch with the brake pedal depressed.
Make sure that the parking brake indicator light goes off. ( P. 247)
■When an inspection at your Lexus dealer is necessary
When the brake hold standby indicator (green) does not illuminate even when the brake
hold switch is pressed with the brake hold system operating conditions met, the system
may be malfunctioning. Ha ve the vehicle inspected at your Lexus dealer.
■If “Brake Hold Fault Depress Brake to Deacti vate Visit Your Dealer” is displayed on the
multi-information display
The system may be malfunctioning. Have the vehicle inspected by your Lexus dealer.
■Warning messages and buzzers
Warning messages and buzzers are used to indicate a system malfunction or to inform
the driver of the need for caution. If a warn ing message is shown on the multi-information
display, read the message and follow the instructions.
■If the brake hold operated indicator flashes
P. 654
WARNING
■When the vehicle is on a steep incline
When using the brake hold system on a steep incline exercise caution. The brake hold
function may not hold the vehicle in such a situation.
■When stopped on a slippery road
The system cannot stop the vehicle when the gripping ability of the tires has been
exceeded. Do not use the system when stopped on a slippery road.
NOTICE
■When parking the vehicle
The brake hold system is not designed for use when parking the vehicle for a long
period of time. Turning the engine switch off while the system is holding the brakes may
release the brakes, which would cause the ve hicle to move. When operating the engine
switch, depress the brake pedal, shift the shift lever to P and set the parking brake.

2564-3. Operating the lights and wipers
RX350/RX350L_U
Push the lever away from you with
the headlight switch in the or position.
Press the Automatic High Beam
switch.
The Automatic High Beam indicator will
come on when the system is operating.
Automatic High Beam
The Automatic High Beam uses a came ra sensor located behind the upper
portion of the windshield to assess the brightness of the lights of vehicles
ahead, streetlights, etc., and automatica lly turns the high beams on or off as
necessary.
WARNING
■Limitations of the Automatic High Beam
Do not overly rely on the Automatic High Beam. Always drive safely, taking care to
observe your surroundings and turning the hi gh beams on or off manually if necessary.
■To prevent incorrect operation of the Automatic High Beam system
Do not overload the vehicle.
Activating the Automatic High Beam
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2644-3. Operating the lights and wipers
RX350/RX350L_U
■Front door opening linked windshield wiper stop function (vehicles with rain-sensing
windshield wipers)
When “AUTO” is selected and the windshield wipers are operating, if a front door is
opened, the operation of the windshield wipers will be stopped to prevent anyone near
the vehicle from being sprayed by water from the wipers, provided the vehicle is stopped
with the parking brake applied or the shift lever in P. When the front door is closed, wiper
operation will resume.
■Customization
Some functions can be customized. ( P. 722)
WARNING
■Caution regarding the use of windshield wi pers in AUTO mode (vehicles with rain-
sensing windshield wipers)
The windshield wipers may operate unexpectedly if the sensor is touched or the wind-
shield is subject to vibration in AUTO mode. Take care that your fingers, etc. do not
become caught in the windshield wipers.
■Caution regarding the use of washer fluid
When it is cold, do not use the washer fl uid until the windshield becomes warm. The
fluid may freeze on the windshield and cause lo w visibility. This may lead to an accident,
resulting in death or serious injury.
NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■When the washer fluid tank is empty
Do not operate the switch continually as the washer fluid pump may overheat.
■When a nozzle becomes blocked
In this case, contact your Lexus dealer.
Do not try to clear it with a pin or other object. The nozzle will be damaged.