warning light LEXUS RX450h 2015 Owners Manual

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31-8. Safety information
Correct driving posture ............. 130
SRS airbags ..................................... 132
Front passenger occupant
classification sy stem .................. 145
Child restraint systems ............... 150
Installing child re straints ............. 154
2-1. Driving procedures
Driving the vehicle ........................ 166
Power (ignition) switch ................ 177
EV drive mode ............................... 183
Hybrid transmission ..................... 186
Turn signal lever ............................ 193
Parking brake ................................. 195
Horn.................................................... 196
2-2. Instrument cluster
Gauges and meters ..................... 197
Indicators and warning
lights................................................. 201
Multi-information display.......... 206
Head-up display ............................ 212
2-3. Operating the lights and
windshield wipers
Headlight switch ............................. 217
Fog light switch .............................. 221
Windshield wipers and
washer............................................ 223 Rear window wiper and
washer ........................................... 229
Headlight cleaner switch ........... 231
2-4. Using other driving systems
Cruise control ............................... 232
Dynamic radar cruise
control............................................ 236
Intuitive parking assist ................ 248
Rear view monitor system
(rear view mirror-attached
type) ............................................... 258
Rear view monitor system
(vehicles with the Lexus
Display Audio system) ............ 266
Driving assist systems................... 271
Hill-start assist control ............... 276
Pre-Collision System.................. 278
BSM (Blind Spot Monitor) ....... 286
2-5. Driving information
Utility vehicle pre cautions ........ 292
Cargo and luggage ..................... 296
Vehicle load limits ......................... 301
Winter driving tips ....................... 302
Trailer towing (AWD models
with towing package) ............. 306
Trailer towing
(without towing package)...... 323
Dinghy towing ............................... 3242
When driving

TABLE OF CONTENTS Index
64-1. Maintenance and care
Cleaning and protecting
the vehicle exterior................... 634
Cleaning and protecting
the vehicle interior .................... 637
4-2. Maintenance
Maintenance requirements .... 640
General maintenance ................ 643
Emission inspection and
maintenance (I/M)
programs ...................................... 647
4-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ................................. 648
Hood................................................... 651
Positioning a floor jack............... 652
Engine compartment.................. 654
12-volt battery................................ 664
Tires ................................................... 670
Tire inflation pressure ................. 679
Wheels............................................. 683
Air conditioning filter ................. 685
Electronic key battery ................ 687
Checking and replacing
fuses ............................................... 689
Headlight aim................................. 705
Light bulbs ...................................... 708 5-1. Essential information
Emergency flashers..................... 724
If your vehicle needs to be
towed.............................................. 725
If you think something is
wrong ............................................. 732
5-2. Steps to take in an emergency
If a warning light turns on
or a warning buzzer
sounds... ........................................ 733
If a warning message is
displayed ....................................... 743
If you have a flat tire..................... 764
If the hybrid system will not
start ................................................. 777
If the shift lever cannot be
shifted from P .............................. 779
If you lose your keys ................... 780
If the electronic key does
not operate properly ................ 781
If the vehicle 12-volt battery
is discharged ............................... 784
If your vehicle overheats .......... 788
If the vehicle becomes
stuck................................................ 793
If your vehicle has to be
stopped in an em ergency ...... 7954
Maintenance and care 5
When trouble arises

19D Pre-collision braking
off switch
 P. 279
 : If equipped
* : For vehicles with a navigation system, refe r to the “Navigation System Owner’s Manual”.E Cup holder P. 588
Headlight cleaner switch
 P. 231
Power back door switch P. 76
Fuel filler door opener P. 119
Instrument panel light
control buttons P. 198
“ODO/TRIP” button P. 198
Windshield wiper de-icer switch
 ,
* P. 360BSM main switch
 P. 286Tire pressure warning
reset switch P. 672

361-1. Hybrid system
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If a warning light comes on or a warning message is displayed, or the 12-volt bat-
tery is disconnected
The hybrid system may not start. In that ca se, try to start the system again. If the
“READY” indicator does not come on, contact your Lexus dealer.■
When refueling, the fuel filler door may take a few moments to open
As part of emission system operation, it ma y take up to 10 seconds for the fuel filler
door to automatically release after the opener switch is pressed. Before refueling is
possible, a message will be shown on the multi-information display. (  P. 119, 755)■
Electromagnetic waves ●
High voltage parts and cables on the hybrid vehicles incorporate electromag-
netic shielding, and theref ore emit approximately the same amount of electro-
magnetic waves as conventional gasoline powered vehicles or home electronic
appliances.●
Your vehicle may cause sound interference in some third party-produced radio
parts.■
Running out of fuel
When the vehicle has run out of fuel and th e hybrid system cannot be started, refuel
the vehicle with at least enough gasoline to make the low fuel level warning light
(  P. 733) go off. If there is only a small amount of fuel, the hybrid system may not
be able to start. (The minimum amount of fuel to add to make the low fuel level
warning light go out is about 2.7 gal. [10.1 L, 2.2 Imp. gal.] when the vehicle is on a
level surface. This value may vary when the vehicle is on a slope.)■
Hybrid battery (traction battery)
The hybrid battery (traction battery) has a limited service life. The lifespan of the
hybrid battery (traction battery) can chan ge in accordance with driving style and
driving conditions.

1031-4. Adjustable components (seats, mirrors, steering wheel)
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Before driving CAUTION■
People suffering illness
Obtain medical advice and wear the seat belt in the proper way.■
When children are in the vehicle
Do not allow children to play with the seat belt. If the seat belt becomes twisted
around a child’s neck, it may lead to choking or other serious injuries that could
result in death.
If this occurs and the buckle cannot be un fastened, scissors shou ld be used to cut
the belt.■
Seat belt pretensioners ●
Do not place anything, such as a cushion, on the front passenger's seat. Doing so
will disperse the passenger's weight, wh ich prevents the sensor from detecting
the passenger's weight properly. As a resu lt, the seat belt pretensioner for the
front passenger's seat may not activate in the event of a collision.●
If the pretensioner has activated, the SRS warning light will come on. In that case,
the seat belt cannot be used again and must be replaced at your Lexus dealer.■
Adjustable shoulder anchor
Always make sure the shoulder belt is positioned across the center of your shoul-
der. The belt should be kept away from yo ur neck, but not falling off your shoulder.
Failure to do so could reduce the amount of protection in an accident and cause
death or serious injuries in the event of a sudden stop, sudden swerve or accident.
(  P. 100)

1341-8. Safety information
SRS airbag system components
Knee airbags
Front passenger airbag
Curtain shield airbags
Front side airbags
Front passenger occupant
classification system
(ECU and sensors)
“AIR BAG ON” and “AIR BAG
OFF” indicator lights
Rear side airbags
SRS warning light
Driver airbag Curtain shield and rear side
airbag sensors
Driver's seat belt buckle
switch
Driver's seat position sensor
Airbag sensor assembly
Front airbag sensors
Front passenger’s seat belt
buckle switch
Door sensors
Seat belt pretensioners and
force limiters

14511-8. Safety information
Before driving Front passenger occupant classification system Your vehicle is equipped with a front passenger occupant classification sys-
tem. This system detects the condition of the front passenger seat and acti-
vates or deactivates the devices for the front passenger.
SRS warning light
“AIR BAG OFF” indicator light
“AIR BAG ON” indicator light
Front passenger’s seat belt reminder light Without a navigation system or
the Lexus Display Audio system
With a navigation system or the
Lexus Display Audio system

1461-8. Safety information
Condition and operation in the front passenger occupant classification system
■ Adult *1
■ Child *3
or child restraint system *4Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “A I R B A G
ON”
SRS warning light Off
Front passenger’s seat belt reminder light
Flashing *2
Devices Front passenger airbag
ActivatedSide airbag on the front
passenger seats
Curtain shield airbag in the front passenger
side
Front passenger knee airbag
Front passenger’s seat belt pretensioner
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “A I R B A G
OFF” *5
SRS warning light Off
Front passenger’s seat belt reminder light
Flashing *2
Devices Front passenger airbag Deactivated
Side airbag on the front
passenger seats
Activated
Curtain shield airbag in the front passenger
side
Front passenger knee airbag Deactivated
Front passenger’s seat belt pretensioner Activated

1471-8. Safety information
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Before driving ■ Unoccupied
■ There is a malfunction in the system
* 1
: The system judges a person of adul t size as an adult. When a smaller
adult sits in the front passenger se at, the system may recognize him/
her as a child depending on his/her physique and posture.
* 2
: In the event the front passenger does not wear a seat belt. Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights Not illuminated
SRS warning light
Off
Front passenger’s seat belt reminder light
Devices Front passenger airbag Deactivated
Side airbag on the front
passenger seats
Activated
Curtain shield airbag in the front passenger
side
Front passenger knee airbag Deactivated
Front passenger’s seat belt pretensioner Deactivated or
activated* 6
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “A I R B A G
OFF”
SRS warning light On
Front passenger’s seat belt reminder light Flashing
Devices Front passenger airbag Deactivated
Side airbag on the front
passenger seats
Activated
Curtain shield airbag in the front passenger
side
Front passenger knee airbag Deactivated
Front passenger’s seat belt pretensioner Activated

1491-8. Safety information
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Before driving CAUTION■
Front passenger occupant classi fication system precautions●
Do not recline the front passenger seatback so far that it touches a rear seat. This
may cause the “AIR BAG OFF” indicator ligh t to be illuminate d, which indicates
that the passenger’s airbags will not deploy in the event of a severe accident. If the
seatback touches the rear se at, return the seatback to a position where it does
not touch the rear seat. Keep the front pa ssenger seatback as upright as possible
when the vehicle is moving. Reclining the seatback excessively may lessen the
effectiveness of the seat belt system.●
If an adult sits in the front passenger se at, the “AIR BAG ON” indicator light is illu-
minated. If the “AIR BAG OFF” indicator is illuminated, ask the passenger to sit
up straight, well back in the seat, feet on the floor, and with the seat belt worn cor-
rectly. If the “AIR BAG OFF” indicator still rema ins illuminated, either ask the pas-
senger to move to the rear seat, or if th at is not possible, move the front passenger
seat fully rearward.●
When it is unavoidable to install the forw ard-facing child restraint system on the
front passenger seat, install the child rest raint system on the front passenger seat
in the proper order. (  P. 1 5 4 )●
Do not modify or remove the front seats.●
Do not kick the front passenger seat or subject it to severe impact. Otherwise,
the SRS warning light may come on to indicate a malfunction of the detection sys-
tem. In this case, contact your Lexus dealer immediately.●
Child restraint systems installed on the rear seat should not contact the front seat-
backs.●
Do not use a seat accessory, such as a cushion or seat cover, that covers the seat
cushion surface.●
Do not modify or replace the upholstery of the front seat.