brake LEXUS RX450h 2018 Owners Manual

694 8-2. Steps to take in an emergency
RX450h_RX450hL _U_OM48F85U■
Stopping the hybrid system
Shift the shift lever to P, set the parking brake, and press the power switch as you normally
do when stopping the hybrid system. ■
Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the electronic
key battery be replaced immediately when the battery is depleted. ( → P. 630)■
Changing power switch modes
Release the brake pedal and press the power switch in step above.
The hybrid system does not start and modes will be changed each time the switch is
pressed. ( → P. 240)■
When the electronic key does not work properly ●
Make sure that the smart access system wi th push-button start has not been deacti-
vated in the customization setting. If it is off, turn the function on.
(Customizable features → P. 740)●
Check if battery-saving mode is set. If it is set, cancel the function. ( → P. 160)
WARNING ■
When using the mechanical key and operating the power windows or the moon roof
or panoramic moon roof
Operate the power window or the moon roof or panoramic moon roof after checking
to make sure that there is no possibility of any passenger having an y of their body parts
caught in the window or the moon roof or panoramic moon roof.
Also, do not allow children to op erate the mechanical key. It is possible for children and
other passengers to get caught in the powe r window or the moon roof or panoramic
moon roof. 3

706 8-2. Steps to take in an emergency
RX450h_RX450hL _U_OM48F85UStop the hybrid system. Shift the shif t lever to P and set the parking brake.
Remove the mud, snow or sand from around the front wheels.
Place wood, stones or some other materi al under the front wheels to help pro-
vide traction.
Restart the hybrid system.
Shift the shift lever to D or R and rele ase the parking brake. Then, while exer-
cising caution, depress the accelerator pedal. ■
When it is difficult to free the vehicle
If the vehicle becomes stuck Carry out the following procedures if the tires spin or the vehicle becomes
stuck in mud, dirt or snow:
Press to turn off TRAC. 1
2
3
4
5

716 9-1. Specifications
RX450h_RX450hL _U_OM48F85U* : The fluid capacity is a reference quantity.
If replacement is necessary, contact your Lexus dealer.
* : The fluid capacity is a reference quantity.
If replacement is necessary, contact your Lexus dealer.
* : Minimum pedal clearance when depressed wi th a force of 110 lbf (490 N, 50.0 kgf)
while the hybrid system is operating.Hybrid transmission Fluid capacity
* 5.1 qt. (4.8 L, 4.2 Imp. qt.)
Fluid type Toyota Genuine ATF WS
NOTICE ■
Hybrid transmission fluid type
Using transmission fluid ot her than “Toyota Genuine ATF WS” may ultimately damage
the hybrid transmission of your vehicle.
Rear differential (Rear electric motor) Fluid capacity
* 1.9 qt. (1.8 L, 1.6 Imp. qt.)
Fluid type Toyota Genuine ATF WS
NOTICE ■
Hybrid transmission fluid type
Using transmission fluid ot her than “Toyota Genuine ATF WS” may ultimately damage
the hybrid transmission of your vehicle.
Brakes Pedal clearance
* 3.7 in. (95 mm) Min.
Brake pad wear limit 0.04 in. (1.0 mm)
Pedal free play 0.04 — 0.24 in. (1.0 — 6.0 mm)
Fluid type FMVSS No. 116 DOT 3 or SAE J1703

730 9-1. Specifications
RX450h_RX450hL _U_OM48F85UGlossary of tire terminology Tire related term Meaning
Cold tire inflation pressure Tire pressure when the vehicle has been parked for
three hours or more, or has no t been driven more than 1
mile or 1.5 km un der that condition
Maximum inflation pres-
sure The maximum cold inflated pr essure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressure Cold tire inflation pressure recommended by a manu-
facturer
Accessory weight The combined weight (in exce ss of those standard items
which may be replaced) of hybrid transmission, power
steering, power brakes, power windows, power seats,
radio and heater, to the extent that these items are avail-
able as factory-installed eq uipment (whether installed
or not)
Curb weight The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight 150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1
* that follows
Occupant distribution Distribution of occupants in a vehicle as specified in the
third column of Table 1
* below

7319-1. Specifications
9
Vehicle specifications
RX450h_RX450hL _U_OM48F85UProduction options weight The combined weight of in stalled regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they re place, not previously con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride leve lers, roof rack, heavy duty
12-volt battery, and special trim
Rim A metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
Rim diameter
(Wheel diameter) Nominal diameter of the bead seat
Rim size designation Rim diameter and width
Rim type designation The industry manufacturer’s designation for a rim by
style or code
Rim width Nominal distance between rim flanges
Vehicle capacity weight
(Total load capacity) The rated cargo and luggage load plus 150 lb. (68 kg)
times the vehicle’s desi gnated seating capacity
Vehicle maximum load on
the tire The load on an individual tire that is determined by dis-
tributing to each axle its share of the maximum loaded
vehicle weight, and dividing by two
Vehicle normal load on the
tire The load on an individual tire that is determined by dis-
tributing to each axle its sh are of curb weight, accessory
weight, and normal occupant weight (distributed in
accordance with Table 1
* below), and dividing by two
Weather side The surface area of the rim not covered by the inflated
tire
Bead The part of the tire that is made of steel wires, wrapped
or reinforced by ply cords an d that is shaped to fit the
rimTire related term Meaning

736
RX450h_RX450hL _U_OM48F85U9-2. Customization
When customizing vehicle features, ensure that the vehicle is parked in a safe
place with the shift lever in P and the parking brake set.■
Changing on the audio system screen 
Vehicles with a Lexus Display Audio system
Press the “MENU” button on the Lexus Display Audio controller.
Select “Setup” on the “Menu” screen and select “Vehicle”.
Various setting can be changed. Refer to the list of settings that can be
changed for details. 
Vehicles with a navigation system
Press the “MENU” button on the Remote Touch.
Select on the “Menu” screen and select .
Various setting can be changed. Refer to the list of settings that can be
changed for details. ■
Changing using the multi-information display
→ P. 108Customizable features Your vehicle includes a variety of elec tronic features that can be personalized
to suit your preferences. The settings of these features can be changed using
the multi-information display, on the audio system screen, or at your Lexus
dealer.
Customizing vehicle features 1
2
1
2

767What to do if... (Troubleshooting)
RX450h_RX450hL _U_OM48F85U●
Did you press the power switch while firmly depressing the brake pedal?
( → P. 239)●
Is the shift lever in P? ( → P. 241)●
Is the electronic key anywhere detectable inside the vehicle? ( → P. 158)●
Is the steering wheel unlocked? ( → P. 242)●
Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way. ( → P. 693)●
Is the 12-volt battery discharged? ( → P. 695)●
Is the power switch in ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
power switch in ON mode ( → P. 250)●
It is locked automatically to prevent theft of the vehicle. ( → P. 242)
●
Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( → P. 196)
●
The auto power off function will be operated if the vehicle is left in
ACCESSORY or ON mode (the hybrid sy stem is not operating) for a period
of time. ( → P. 241)If you think something is wrong The hybrid system does not start
The shift lever cannot be shifted from P even if you depress the brake
pedal
The steering wheel cannot be turned after the hybrid system is stopped
The windows do not open or close by operating the power window
switches
The power switch is turned off automatically

768 What to do if... (Troubleshooting)
RX450h_RX450hL _U_OM48F85U●
The seat belt reminder light is flashing
Are the driver and the passengers wearing the seat belts?
( → P. 662, 662)●
The parking brake indicator is on
Is the parking brake released? ( → P. 253)
Depending on the situation, other type s of warning buzzer may also sound.
( → P. 660, 667) ●
Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( → P. 86)
Do one of the following to stop the alarms: • Unlock the doors.
• Turn the power switch to ACCESSORY or ON mode, or start the hybrid system.
●
Is the message displayed on the multi-information display?
Check the message on the multi-information display. ( → P. 667)
●
When a warning light turns on or a wa rning message is displayed, refer to
P. 660, 667. A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds when leaving the vehicle
A warning light turns on or a warning message is displayed

770
RX450h_RX450hL _U_OM48F85UAlphabetical index
Alphabetical index A/C ............................................................ 507
Air conditioning filter........................625
Automatic air conditioning
system ..................................... 507, 522
S-FLOW mode ................................... 514
ABS (Anti-lock Brake System)....... 382
Warning light ........................................ 661
Adaptive Front-lighting System
(AFS) ...................................................... 259
Adaptive Variable Suspension
System ................................................... 383
AFS (Adaptive Front-lighting
System) .................................................. 259
Air conditioning filter .......................... 625
Air conditioning system
Air conditioning filter........................625
Automatic air conditioning
system ..................................... 507, 522
S-FLOW mode ................................... 514 Airbags .........................................................36
Airbag operating conditions .......... 43
Airbag precautions for your
child.......................................................... 39
Airbag warning light ....................... 660
Correct driving posture .................... 30
Curtain shield airbag
operating conditions ....................... 43
Curtain shield airbag
precautions ............................................ 41
Front passenger occupant
classification system..........................47
General airbag precautions ........... 39
Locations of airbags............................ 36
Modification and disposal of
airbags .....................................................42
Seat cushion airbag ..............................37
Side airbag operating
conditions ............................................. 43
Side airbag precautions .................... 39
Side and curtain shield airbags
operating conditions ....................... 43
Side and curtain shield airbags
precautions .......................................... 39
SRS airbag instructions
for Canadian owners ................... 754
SRS airbags ............................................. 36A

771Alphabetical index
RX450h_RX450hL _U_OM48F85UAlarm ............................................................ 86
Anchor brackets ...................................... 57
Antenna
Radio ........................................................429
Smart access system
with push-button start ................... 158
Anti-lock Brake System (ABS)....... 382
Warning light ........................................ 661
Approach warning.................................314
Armrest ....................................................558
Assist grips .............................................. 559
Audio system (with Lexus
Display Audio System) ...................400
Antenna ..................................................429
Audio input........................................... 409
AUX port.............................................. 409
Bluetooth ®
audio ............................. 459
CD player ..............................................433
iPod .......................................................... 440
MP3/WMA disc ...............................433
Optimal use ........................................... 419
Portable music player ..................... 448
Radio ........................................................426
Setup menu .............................................412
Steering wheel audio
switches .............................................. 406
USB memory ....................................... 444 Audio system
(with navigation system)
* Automatic air conditioning
system ......................................... 507, 522
Air conditioning filter ....................... 625
Rear automatic air conditioning
system .................................................. 522
S-FLOW mode....................................514
Automatic headlight leveling
system .................................................... 260
Automatic High Beam ........................262
Automatic light control system ...... 258
AUX port ................................................ 409
Auxiliary boxes .......................... 539, 544
* : Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.