sensor LEXUS RX450h 2015 Service Manual

2892-4. Using other driving systems
2
When driving ●
Instances of the Blind Sp ot Monitor unnecessarily detecting a vehicle and/or
object may increase under the following conditions:
• When there is only a short distance between your vehicle and a guardrail, wall
etc.
• When there is only a short distance between your vehicle and a following
vehicle.
• When vehicle lanes are narrow and a vehicle driving 2 lanes across from your
vehicle enters the detection area■
The outside rear view mirror indicators visibility
When under strong sunlight, the outside rear view mirror indicator may be difficult
to see.■
When there is a malfunction in the system
If a system malfunction is detected due to any of the following reasons, warning
message is displayed: (  P. 74 3 )●
There is a malfunction with the sensors●
The sensors have become dirty●
The outside temperature is extremely high or low●
The sensor voltage has become abnormal■
Certification for the Blind Spot Monitor
For vehicles sold in the U.S.A.
FCC ID: OAYSRR2A
This device complies with part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
FCC WARNING
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.

2912-4. Using other driving systems
2
When driving CAUTION■
Handling the radar sensor
One Blind Spot Monitor is installed inside the left and right side of the vehicle rear
bumper respectively. Observe the followin g to ensure the Blind Spot Monitor can
function correctly.
●
Do not subject the sensor or surrounding area on the bumper to a strong impact.
If the sensor moves even slightly off position, the system may malfunction and
vehicles that enter the detection area ma y not be detected. If the sensor or sur-
rounding area is subject to a strong impact, always have the area inspected by
your Lexus dealer.●
Do not disassemble the sensor.●
Do not attach accessories or stickers to the sensor or surrounding area on the
bumper.●
Do not modify the sensor or surrounding area on the bumper.●
Do not paint the sensor or surrounding area on the bumper. ●
Keep the sensor and its surrounding area
on the bumper clean at all times.

6253-7. Other interior features
3
Interior features CAUTION■
While driving the vehicle
Do not adjust the display. Adjust the di splay only when the vehicle is stopped.■
When doing the circling calibration
Secure a wide space, and watch out for people and vehicles in the vicinity. Do not
violate any local traffic rules while performing circling calibration.
NOTICE■
To avoid compass malfunctions
Do not place magnets or any metal objects near the inside rear view mirror.
Doing this may cause the compass sensor to malfunction.■
To ensure normal operation of the compass ●
Do not perform a circling calibration of the compass in a place where the earth's
magnetic field is subject to interference by artificial magnetic fields.●
During calibration, do not operate elec tric systems (moon roof, power windows,
etc.) as they may interfere with the calibration.

6354-1. Maintenance and care
4
Maintenance and care ■
Aluminum wheels ●
Remove any dirt immediately by using a neutral detergent. Do not use hard
brushes or abrasive cleaners. Do not us e strong or harsh chemical cleaners.
Use the same mild detergent and wax as used on the paint.●
Do not use detergent on the wheels when they are hot, for example after driving
for long distance in the hot weather.●
Wash detergent from the wheels immediately after use.■
Bumpers
Do not scrub with abrasive cleaners.
CAUTION■
When cleaning the windshield (vehicles with rain-sensing windshield wipers)
●
When the upper part of the windshield where the raindrop sensor is located is
touched by hand●
When a wet rag or similar is held close to the raindrop sensor●
If something bumps against the windshield●
If you directly touch the ra indrop sensor body or if something bumps into the
raindrop sensor■
Precautions regarding the exhaust pipe
Exhaust gasses cause the exhaus t pipe to become quite hot.
When washing the vehicle, be careful not to touch the pipe until it has cooled suffi-
ciently, as touching a hot exhaust pipe can cause burns. Set the wiper switch to off.
If the wiper switch is in , the wipers
may operate unexpected ly in the following
situations, and may result in hands being
caught or other serious injuries and cause
damage to the wiper blades.OFF

6974-3. Do-it-yourself maintenance
4
Maintenance and care 24
AM2 7. 5 A Starter system25
ECU-B NO. 2 7. 5 A Air conditioning system, front passen-
ger occupant classification system,
audio system, vehicle dynamics inte-
grated management, power windows,
electric power steering system26
MAYDAY/TEL 7. 5 A MAYDAY/TEL27
IMMOBI 7. 5 A IMMOBI28
ABS MAIN
NO. 3 15 A Brake system29
DRL 7. 5 A Daytime running light system30
IGN 10 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem31
DOME 10 A Vanity mirror lights, luggage compart-
ment lights, interior lights, personal
lights, door courtesy lights, footwell
lights, scuff lights
32
ECU-B NO. 1 10 A Tilt and telescopic steering, multiplex
communication system, meters and
gauges, driving position memory,
power seats, power back door, head-
up display, starter system, outside rear
view mirror, steering sensor, garage
door opener
33
EFI NO. 1 10 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
34
WIP-S 7. 5 A Cruise controlFuse Ampere Circuit

7014-3. Do-it-yourself maintenance
4
Maintenance and care 7
ECU-IG1 NO. 1 10 A Multiplex communication system,
steering sensor, shift lock control sys-
tem, tilt and telescopic steering,
power back door, pre-collision sys-
tem, vehicle dynamics integrated
management, tire pressure warning
system8
S/ROOF 30 A Moon roof9
FUEL OPN 7. 5 A Fuel filler door opener10
PSB 30 A Pre-collision seat belt11
TI & TE 30 A Tilt and telescopic steering system12
DR LOCK 10 A13
FR FOG 7. 5 A Front fog lights14
P-S E AT L H 30 A Po w e r s e a t ( l e f t - s i d e )15
4WD 7. 5 A AW D s y s t e m16
INVERTER 20 A Po w e r o u t l e t17
RR FOG 7. 5 A18
D/L ALT B 25 A Multiplex communication system,
power door lock system, power back
door19
EPS 10 A Electric power steering system20
ECU-IG1 NO. 2 10 A Intuitive parking assist, pre-collision
seat belt, capacitor
21
PA N E L 10 A Switch illumination, navigation system,
hybrid transmission system, audio sys-
tem, multi-information display, air con-
ditioning system, multiplex
communication systemFuse Ampere Circuit

7385-2. Steps to take in an emergency
■
If the malfunction indicator lamp comes on while driving
First check the following: ●
Is the fuel tank empty?
If it is, fill the fuel tank immediately.●
Is the fuel tank cap loose?
If it is, tighten it securely.
The lamp will go off after several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon
as possible.■
SRS warning light
This warning light system monitors the airb ag sensor assembly, front airbag sensors,
side and curtain shield airbag sensors, curtain shield and rear side airbag sensors,
door sensors, driver's seat position sensor, driver's seat belt buckle switch, front
passenger occupant classification system (ECU and sensors), “AIR BAG ON” indi-
cator light, “AIR BAG OFF” in dicator light, front pass enger's seat belt buckle
switch, seat belt pretensioner assemblies, inflators, interconnecting wiring and
power sources. (  P. 1 3 2 )■
Front passenger detection sensor, passen ger seat belt reminder and warning
buzzer ●
If luggage is placed on the front passenger seat, the front passenger detection
sensor may cause the warning light to flash and the warning buzzer to sound
even if a passenger is not sitting in the seat.●
If a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.■
Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage temporarily
drops, the electric power steering system warning light may come on and the warn-
ing buzzer may sound.
■
When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire
pressure warning reset switch will not turn off the tire pressure warning light.

7465-2. Steps to take in an emergency
(Flashes)
(If equipped) Indicates a malfunction in the pre-collision system
(If equipped) Indicates a malfunction in the intuitive parking assist
The malfunctioning assi st-sensor is flashing.
Indicates a malfunction in the cruise control system
or the radar cruise control system (If equipped)
Press the “ON-OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
(If equipped) Indicates a malfunction in the automatic headlight
leveling systemWa r n i n g m e s s a g e Details

5
When trouble arises
7515-2. Steps to take in an emergency
(If equipped) Indicates that the pre-
collision system is not
currently functional
because the grille or the
sensor is dirty.
This message also
appears when the pre-
collision system is not
functional due to over-
heating. • Check the grille and the
sensor and clean them if
they are dirty.
• In case of overheating,
the system will become
functional once the sys-
tem cools down.
(If equipped) Indicates that intuitive
parking assist is dirty or
covered with ice
A buzzer also sounds.
The site of the malfunc-
tion and the vehicle
image are flashing. Clean the sensor.
(If equipped) Indicates that the radar
cruise control sensor is
dirty or covered with ice
A buzzer also sounds. Clean the sensor.
(If equipped) Indicates that the radar
cruise control system is
unable to judge vehicle-
to-vehicle distance
A buzzer also sounds. • Switch driving mode to
normal.
• If the windshield wipers
are on, turn them off or
set them to a mode other
than AUTO (If
equipped) or high speed
wiper operation.Wa r n i n g m e s s a g e Details Correction procedure

7545-2. Steps to take in an emergency
*: Refer to the separate “Scheduled Maintenance” or “Owner's Manual Supple-
ment” for the maintenance interval applicable to your vehicle. (Flashes) Indicates that the
“POWER” 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.
(Flashes) Indicates that the driver’s
door is opened when the
hybrid transmission is out
of P with the hybrid sys-
tem on. Shift the shift lever to P.
(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.
(Flashes) Indicates that the accel-
erator pedal is depressed
while the shift lever is in
N. Release the accelerator
pedal and shift the shift
lever to D or R.Wa r n i n g m e s s a g e Details Correction procedure