2015 LEXUS RX450h 743

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

351-1. Hybrid system
1
Before driving Hybrid battery air vents
There are air intake vents under
the rear seats for the purpose of
cooling the hybrid battery (traction
battery). If the vents become
blocked, the hybrid battery may
overheat, leading to a reduction in
hybrid battery output.
Emergency shut off system
When a certain level of impact is detected by the impact sensor, the
emergency shut off system blocks off the high voltage current and stops
the fuel pump to minimize the risk of electrocution and fuel leakage. If the
emergency shut off system activates, your vehicle will not restart. To
restart the hybrid system, contact your Lexus dealer.
Hybrid warning message
A message is automatically displayed when a malfunction occurs in the
hybrid system or an impr oper operation is attempted.
If a warning message is shown on
the multi-information display, read
the message and follow the
instructions. ( 
P. 743)

3743-3. Using the Lexus Display Audio system
■ HD Radio™ technology troubleshooting guide Experience Cause Action
Mismatch of time
alignment- a user
may hear a short
period of program-
ming replayed or an
echo, stutter or skip. The radio stations
analog and digital
volume is not prop-
erly aligned or the
station is in ball-
game mode. None, radio broadcast issue. A
user can contact the radio sta-
tion.
Sound fades, blend-
ing in and out. Radio is shifting
between analog and
digital audio. Reception issue, may clear-up
as the vehicle continues to be
driven. Selecting “Analog” can
force radio in an analog audio.
Audio mute condi-
tion when an HD2 /
HD3 multicast
channel had been
playing. The radio does not
have access to digi-
tal signals at the
moment. This is normal behavior, wait
until the digital signal returns. If
out of the coverage area, seek
a new station.
Audio mute delay
when selecting an
HD2 /HD3 multi-
cast channel preset. The digital multicast
content is not avail-
able until HD
Radio ™
broadcast
can be decoded
and make the audio
available. This takes
up to 7 seconds. This is normal behavior, wait
for the audio to become avail-
able.
Text information
does not match the
present song audio. Data service issue
by the radio broad-
caster. Broadcaster should be noti-
fied. Complete the form;
www.ibiquity.com/automotive/
report_radio_station_experie
nces .

4743-4. Using the audio system
Audio system (without a navigation syst em or the Lexus Display Audio system)CD player with a changer and AM/FM radio (type A)

5743-4. Using the audio system
Initializing the system
Select “Initialize” and then “Confirm” using .
Select “Confirm” again using .■
Initialization ●
The following data in the system can be initialized:
•Phone book
• Outgoing and incoming call history
•Speed dials
• Registered mobile phone data
•Security code
• Registered Bluetooth ®
enabled portable player data
• Passkey for the mobile phones
• Passkey for the Bluetooth ®
audio players
•Guidance volume
• Receiver volume
• Ring tone volume●
Once the initialization has been complete d, the data cannot be restored to its
original state.■
When the phone book is locked
The following functions cannot be used: ●
Dialing by inputting a name●
Speed dialing
●
Dialing a number stored in the call history memory
●
Using the phone bookSTEP 1
STEP 2

When trouble arises
5
7235-1. 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
emergency ............................ 795

5
When trouble arises
7435-2. Steps to take in an emergency
If a warning message is displayed
Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
The following warning in dicates a possible problem in the brake system.
Immediately stop the vehi cle 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 the following:
• The brake fluid level is low; or,
• The brake system is malfunctioning.
A buzzer also sounds.
Indicates a malfunction in:
• The regenerative brake system; or,
• The electronically controlled brake system
A buzzer also sounds.If a warning is shown on the multi-information display, stay calm and per-
form the following actions:
Master warning light The master warning light also
comes on or flashes in order to
indicate that a message is cur-
rently being displayed on the
multi-information display.
Multi-information display
If any of the warning lights comes on again after the following actions
have been performed, contact your Lexus dealer.

863Alphabetical index
Daytime running light system............ 219
Defogger*
Rear window........................................358
Side mirrors..........................................358
Dimensions ............................................. 798
Dinghy towing ........................................324
Display
Energy flow ............................................. 39
Multi-information display............... 206
Trip information .................................. 209
Warning message .............................743
Do-it-yourself maintenance............. 648
Door courtesy lights
Door courtesy lights ........................ 582
Wattage ................................................ 809
Door lock
Back door .................................................75
Side door ................................................... 72
Wireless remote control................... 69
Door pockets ......................................... 587
Doors
Back door .................................................75
Door lock ................................ 56, 69, 72
Door windows ........................................ 112
Power back door ..................................75
Side door ................................................... 72
Side mirrors............................................109
Driver's seat belt reminder light .....736
Driving
Break-in tips ........................................... 167
Correct posture ...................................130
Procedures .............................................166
Utility vehicle
precautions ........................................292
Winter driving tips ............................ 302 Driving position memory ...................... 93
Electric power steering ........................271
Electronic features control ...............206
Electronic key
If the electronic key does not
operate properly ............................. 781
Emergency flashers
Switch....................................................... 724
Emergency, in case of
If a warning buzzer sounds........... 733
If a warning light turns on............... 733
If a warning message is
displayed............................................. 743
If the back door opener is
inoperative ............................................ 79
If the electronic key does not
operate properly ............................. 781
If the hybrid system will
not start ................................................ 777
If the shift lever cannot be
shifted from P ................................... 779
If the vehicle has a discharged
12-volt battery...................................784
If you have a flat tire ......................... 764
If you lose your keys ........................ 780
If you think something is
wrong ................................................... 732
If your vehicle becomes stuck ..... 793
If your vehicle has to be
stopped in an emergency ..........795
If your vehicle needs to be
towed.................................................... 725
If your vehicle overheats ............... 788D
E
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.