2015 LEXUS RX350 engine

5
When trouble arises
7515-2. Steps to take in an emergency
●
If non-genuine Lexus wheels are used (Even if you use Lexus wheels, the tire
pressure warning system may not work properly with some types of tires.)●
If tire chains are used●
Vehicles with a full-size spare tire: If the spare tire is in a location subject to poor
radio wave signal reception●
Vehicles with a full-size spare tire: If a large metallic object which can interfere
with signal reception is pu t in the luggage compartment■
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 START STOP” switch is turned to IGNITION ON mode, have
it checked by your Lexus dealer.■
Customization
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features  P. 8 3 4 )
CAUTION■
When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and
operate using more force than usual.■
If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause loss of
vehicle control and result in death or serious injury. ●
Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately.●
If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change
it with the spare tire and have the flat tire repaired by the nearest Lexus dealer.
●
Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes.
■
If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

5
When trouble arises
7555-2. Steps to take in an emergency
Stop the vehicle immediately.
A buzzer sounds and a warning message is shown on th e multi-informa-
tion display. The following warning indicates the possibility of damage to
the vehicle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Lexus dealer. Wa r n i n g m e s s a g e Details
(U.S.A.)
(Canada) Indicates abnormal engine oil pressure
The warning light may come on if the engine oil pres-
sure is too low.
(Flashes)
(AWD models) Indicates the AWD system has overheated

7605-2. Steps to take in an emergency
Indicates that the back
door is not fully closed
If the vehicle reaches a
speed of 3 mph
(5 km/h), a buzzer
sounds to indicate that
the back door is not yet
fully closed. Close the back door.
(Flashes)
(If equipped) Indicates that the moon
roof is not fully closed
(with the “ENGINE
START STOP” switch off,
and the driver's door
open) Close the moon roof.
Indicates that the parking
brake is still engaged
If 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 washer
fluid level is low Add washer fluid.Wa r n i n g m e s s a g e Details Correction procedure

5
When trouble arises
7615-2. Steps to take in an emergency
(U.S.A. only) Indicates that all mainte-
nance according to the
driven distance on the
maintenance schedule*
should be performed
soon. If necessary, perform
maintenance.
Comes on approximately
4500 miles (7200 km)
after the maintenance
data has been reset.
(U.S.A. only) Indicates that all mainte-
nance is required to cor-
respond to the driven
distance on the mainte-
nance schedule*.
Perform the necessary
maintenance. Please reset
the maintenance data
after the maintenance is
performed. (  P. 6 5 7 )Comes on approximately
5000 miles (8000 km)
after the maintenance
data has been reset.
(The indicator will not
work properly unless the
maintenance data has
been reset.)
(Flashes)
(AWD models) Indicates that the AWD
system is not currently
functional
A buzzer also sounds. Reduce vehicle speed or
stop the vehicle in a safe
place until the warnings
clear.
In this case, do not stop
the engine.Wa r n i n g m e s s a g e Details Correction procedure

7645-2. Steps to take in an emergency
Indicates that the engine
has overheated
A buzzer also sounds. Stop and check.
(  P. 7 9 9 )
Indicates that remaining
fuel is approximately 2.8
gal. (10.7 L, 2.3 Imp. gal.)
or less Refuel the vehicle.
(Flashes) Indicates that the
“ENGINE START STOP”
switch is turned off or
turned to ACCESSORY
mode and the driver's
door is opened while the
lights are turned on. Turn the lights off.
(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.Wa r n i n g m e s s a g e Details Correction procedure

7665-2. Steps to take in an emergency
Have the malfunction repaired immediately
After taking the specified steps to co rrect the suspected problem, check
that the warning message and light go off. Interior
buzzer Exterior
buzzer Wa r n i n g m e s s a g e Details Correction
procedure
Sounds
once 
(Flashes) The electronic key
is not detected
when an attempt
is made to start
the engine. Confirm the loca-
tion of the elec-
tronic key.
Sounds
once Sounds
3 times
(Flashes) 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
START STOP”
switch was in a
mode other than
off. Bring the elec-
tronic 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 START
STOP” switch was
not turned off. Tu r n t h e
“ENGINE START
STOP” switch off
or bring the elec-
tronic key back
into the vehicle.

5
When trouble arises
7675-2. Steps to take in an emergency
Sounds
once Sounds
once
(Displayed alternately)
(Flashes) An attempt was
made to exit the
vehicle with the
electronic key and
lock the doors
without first turn-
ing the “ENGINE
START STOP”
switch off. Tu r n t h e
“ENGINE START
STOP” switch off
and lock the
doors again.
Sounds
once 
(Flashes) An attempt was
made to start the
engine without
the electronic key
being present, or
the electronic key
was not function-
ing normally.
An attempt was
made to drive
when the regular
key was not inside
the vehicle. Confirm that the
electronic key is
inside the vehicle.Interior
buzzer Exterior
buzzer Wa r n i n g m e s s a g e Details Correction
procedure

7685-2. Steps to take in an emergency
Con-
tinuous 
(Flashes) The driver’s door
was opened when
the shift lever was
not in P and the
“ENGINE START
STOP” switch was
not turned off. Shift the shift lever
to P.
Con-
tinuous Con-
tinuous
(Displayed alternately)
(Flashes) The driver's door
was opened and
closed while the
electronic key was
not in the vehicle,
the shift lever was
not in P and the
“ENGINE START
STOP” switch was
not turned off. • Shift the shift
lever to P.
• Bring the elec-
tronic key back
into the vehicle.Interior
buzzer Exterior
buzzer Wa r n i n g m e s s a g e Details Correction
procedure