2019 LEXUS RX350 engine

291-1. For safe use
1
For safety and security
RX350/RX350L_U WARNING
Observe the following precautions.
Failure to do so may cause the driver’s floor mat to slip, possibly interfering with the ped-
als while driving. An unexpectedly high spee d may result or it may become difficult to
stop the vehicle. This could lead to an ac cident, resulting in death or serious injury.■
When installing the driver’s floor mat ●
Do not use floor mats designed for other models or different model year vehicles,
even if they are Lexus Genuine floor mats. ●
Only use floor mats designed for the driver’s seat. ●
Always install the floor mat securely using the retain ing hooks (clips) provided.●
Do not use two or more floor mats on top of each other. ●
Do not place the floor mat bottom-side up or upside-down. ■
Before driving ●
Check that the floor mat is securely fixed in
the correct place with all the provided retain-
ing hooks (clips). Be especially careful to per-
form this check after cleaning the floor. ●
With the engine stopped and the shift lever in
P, fully depress each pedal to the floor to
make sure it does not interfere with the floor
mat.

531-1. For safe use
1
For safety and security
RX350/RX350L_UExhaust gas precautions Harmful substance to the human body is contained in exhaust gases if inhaled.WARNING
Exhaust gases contain harmful carbon monoxi de (CO), which is colorless and odorless.
Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to an accident
caused by light-deadness, or may lead to death or a serious health hazard.■
Important points while driving ●
Keep the back door closed. ●
If you smell exhaust gases in the vehicle even when the back door is closed, open the
windows and have the vehicle inspected at your Lexus dealer as soon as possible.■
When parking ●
If the vehicle is in a poorly ventilated area or a closed area, such as a garage, stop the
engine. ●
Do not leave the vehicle with the engine running for a long time.
If such a situation cannot be avoided, park the vehicle in an open space and ensure
that exhaust fumes do not enter the vehicle interior. ●
Do not leave the engine running in an area with snow build-up, or where it is snowing.
If snowbanks build up around the vehicle while the engine is running, exhaust gases
may collect and enter the vehicle. ■
Exhaust pipe
The exhaust system needs to be checked periodically. If there is a hole or crack caused
by corrosion, damage to a joint or abnormal exhaust noise, be sure to have the vehicle
inspected and repaired by your Lexus dealer.

74
RX350/RX350L_U 1-3. Theft deterrent system
The indicator light flashes after the
engine switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the engine switch has been turned to
ACCESSORY or IGNITION ON
mode to indicate that the system has
been canceled. ■
System maintenance
The vehicle has a maintenance-free type engine immobilizer system. ■
Conditions that may cause the system to malfunction ●
If the grip portion of the key is in contact with a metallic object●
If the key is in close proximity to or touching a key registered to the security system (key
with a built-in transponder chip) of another vehicleEngine immobilizer system The vehicle’s keys have built-in tran sponder chips that prevent the engine
from starting if a key has not been previously registered in the vehicle’s on-
board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
This system is designed to help preven t vehicle theft but does not guarantee
absolute security agai nst all vehicle thefts.

751-3. Theft deterrent system
1
For safety and security
RX350/RX350L_U ■
Certification for the engine immobilizer system 
For vehicles sold in the U.S.A.

771-3. Theft deterrent system
1
For safety and security
RX350/RX350L_U The alarm uses light and sound to give an alert when an intrusion is detected.
The alarm is triggered in the following situations when the alarm is set:●
A locked door is unlocked or opened in any way other than using the entry
function, wireless remote control or mech anical key. (The doors will lock again
automatically.) ●
The hood is opened.
Close the doors and hood, and lock all
the doors. The system will be set auto-
matically after 30 seconds. The indicator light changes from being
on to flashing when the system is set.
Do one of the following to de activate or stop the alarms:●
Unlock the doors. ●
Turn the engine switch to ACCESSOR Y or IGNITION ON mode, or start
the engine. (The alarm will be deactivat ed or stopped after a few seconds.)■
System maintenance
The vehicle has a maintenance-free type alarm system. ■
Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the follow-
ing: ●
Nobody is in the vehicle. ●
The windows and moon roof or panoramic mo on roof are closed before the alarm is
set. ●
No valuables or other personal items are left in the vehicle.Alarm The alarm
Setting the alarm system
Deactivating or stopping the alarm

82 2. Instrument cluster
RX350/RX350L_U * 1
: These lights turn on when the engine switch is turned to IGNITION ON mode to
indicate that a system check is being performed. They will turn off after the engine is
started, or after a few seconds. There may be a malfunction in a sy stem if a light does
not come on, or turn off. Have the ve hicle inspected by your Lexus dealer.
* 2
: This light flashes to indicate a malfunction.
* 3
: This light flashes or illumina tes to indicate a malfunction.
* 4
: This light illuminates on the center panel.
* 5
:RX350
* 6
:RX350L
The indicators inform the driver of the op erating state of the vehicle’s various sys-
tems. Low fuel level warning light
(  P. 656)
* 4, 6
Rear passengers’ seat
belt reminder light
(  P. 656)
Driver’s and front
passenger’s seat belt
reminder light (  P. 656)
* 1
Tire pressure warning light
(  P. 656)
* 4, 5
Rear passengers’ seat
belt reminder light
(  P. 656) * 1
Master warning light
(  P. 657)
Indicators Turn signal indicator
(  P. 246) Fog light indicator
(  P. 260)
(U.S.A.)
Headlight indicator
(  P. 252) Cruise control indicator
(  P. 300)
(Canada)
Tail light indicator
(  P. 252) Radar cruise control
indicator (  P. 300)
Headlight high beam
indicator (  P. 253) Cruise control “SET”
indicator (  P. 300)
* 1
Automatic High Beam
indicator (  P. 256) LKA indicator (  P. 291)

84 2. Instrument cluster
RX350/RX350L_U ●
Drive mode indicators 
Except F SPORT models 
F SPORT models
* 1
: These lights turn on when the engine switch is turned to the IGNITION ON mode to
indicate that a system check is being performed. They will turn off after the engine is
started, or after a few seconds. There may be a malfunction in a sy stem if a light does
not come on, or turn off. Have the ve hicle inspected by your Lexus dealer.
* 2
: In order to confirm operation, the BSM ou tside rear view mirror indicators illuminate
in the following situations:
• When the BSM function is enabled on of the multi-information display, the
engine switch is turned to IGNITION ON mode.
• When the engine switch is in IGNITION ON mode, the BSM function is enabled
on of the multi-information display.
If the system is functioning correctly, the BSM outside rear view mirror indicators will
turn off after a few seconds.
If the BSM outside rear view mirror indicators do not illuminate or do not turn off,
there may be a malfunction in the system.
If this occurs, have the vehicle inspected by your Lexus dealer.
* 3
: This light illuminates on the outside rear view mirrors.
* 4
: This light flashes to indicate that the system is operating.
* 5
: The light comes on when the system is turned off.
* 6
: This light illuminates on the center panel.
* 7
: When the outside temperature is approximately 37  F (3  C) or lower, this indicator
will flash for approximately 10 seconds, then stay on. Eco drive mode indicator
(  P. 373) “SPORT” indicator
(  P. 373)
Eco drive mode indicator
(  P. 373) “SPORT S” indicator
(  P. 373)
“SPORT S+” indicator
(  P. 373) “CUSTOMIZE” indicator
(  P. 373)

852. Instrument cluster
2
Instrument cluster
RX350/RX350L_U WARNING ■
If a safety system warnin g light does not come on
Should a safety system light such as the ABS and SRS warning lights not come on when
you start the engine, this could mean that these systems are not available to help pro-
tect you in an accident, which could result in death or serious injury. Have the vehicle
inspected by your Lexus dealer immediately if this occurs.