parking brake LEXUS RX450h 2018 Owners Manual

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987432
10
RX450h_RX450hL _U_OM48F85U 654-1. Before driving
Driving the vehicle ......................212
Cargo and luggage .................. 220
Vehicle load limits ..................... 223
Trailer towing (vehicles
with towing package)............ 224
Trailer towing (vehicles
without towing
package)..................................... 237
Dinghy towing ............................. 238
4-2. Driving procedures
Power (ignition) switch............ 239
EV drive mode ............................ 244
Hybrid transmission.................. 246
Turn signal lever ......................... 252
Parking brake .............................. 253
Brake Hold ................................... 256
4-3. Operating the lights and
wipers
Headlight switch ........................ 258
Automatic High Beam............. 262
Fog light switch ........................... 266
Windshield wipers and
washer ......................................... 267
Rear window wiper and
washer ..........................................272 4-4. Refueling
Opening the fuel tank cap ......274
4-5. Using the driving support
systems
Lexus Safety System+ .............. 279
PCS
(Pre-Collision System) ......... 286
LKA
(Lane-Keeping Assist).......... 297
Dynamic radar cruise
control with full-speed
range ............................................ 306
BSM (Blind Spot Monitor).......319
• BSM function......................... 323
• RCTA function...................... 327
Intuitive parking assist.............. 332
Intelligent Clearance Sonar
(ICS)............................................. 342
Lexus parking assist
monitor........................................ 363
Driving mode select
switch ........................................... 379
Driving assist systems .............. 382
4-6. Driving tips
Hybrid vehicle driving tips .....388
Winter driving tips..................... 390
Utility vehicle precautions ..... 3944
Driving

19Pictorial index
RX450h_RX450hL _U_OM48F85UMulti-information display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 101 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 101
Energy monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 124
When the warning messages are displayed . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 667
Parking brake switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 253 Applying/releasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 253, 254
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 391
Warning buzzer/message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 255, 667
Turn signal lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 2 52Headlight switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 258
Headlights/side marker lights/parking lights/tail lights/
license plate lights/daytime running lig hts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 258
Fog lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 266
Windshield wiper and washer switch . . . . . . . . . . . . . . . . . . . . . . . . . P. 267, 272 Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 267, 272
Adding washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 60 4
Emergency flasher switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 652
Hood lock release lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 595
Tilt and telescopic steering contro l switch . . . . . . . . . . . . . . . . . . . . . . . . . . P. 189Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 189
Driving position memory
* 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 181
Air conditioning system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 507 Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 507
Rear window defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 516
Audio system
* 2
Audio system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 400
Hands-free system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 461
* 1
: If equipped
* 2
: For vehicles with a navigation system , refer to “NAVIGATION SYSTEM OWNER’S
MANUAL”.4
5
6
7
8
9
10
11
12

771-3. Hybrid system
1
For safety and security
RX450h_RX450hL _U_OM48F85U■
Sounds and vibrations specific to a hybrid vehicle
There may be no engine sound or vibration even though the vehicle is able to move with
the “READY” indicator is illuminate d. For safety, make sure to shift the shift lever to P and
apply the parking brake when parked.
The following sounds or vibrations may occu r when the hybrid system is operating and
are not a malfunction: ●
Motor sounds may be heard from the engine compartment. ●
Sounds may be heard from the hybrid battery (traction battery) be hind the rear seats
when the hybrid system starts or stops. ●
Relay operating sounds such as a snap or so ft clank will be emitted from the hybrid bat-
tery (traction battery), behind the rear se ats, when the hybrid system is started or
stopped. ●
Sounds from the hybrid system may be heard when the back door is open. ●
Sounds may be heard from the transmission wh en the gasoline engine starts or stops,
when driving at low spee ds, or during idling.●
Engine sounds may be heard when accelerating sharply. ●
Sounds may be heard due to regenerative braking when the brake pedal is depressed
or as the accelerator pedal is released. ●
Vibration may be felt when the ga soline engine starts or stops.●
Cooling fan sounds may be heard from th e air intake vents under the rear seats.■
Vehicle proximity notification system
In the following cases, the vehicle proximity notification system may be difficult for sur-
rounding people to hear. ●
In very noisy areas ●
In the wind or the rain
Also, as the vehicle proximity notification system is installed on the fr ont of the vehicle, it
may be more difficult to hear from the re ar of the vehicle compared to the front.■
Maintenance, repair, re cycling, and disposal
Contact your Lexus dealer regarding mainte nance, repair, recycling and disposal. Do
not dispose of the vehicle yourself. ■
Customization
Some functions can be customized. ( → P. 736)

811-3. Hybrid system
1
For safety and security
RX450h_RX450hL _U_OM48F85UWARNING ■
Road accident cautions
Observe the following precautions to reduce the risk of death or serious injury:●
Pull your vehicle off the road, shift the shif t lever to P, apply the parking brake, and
turn the hybrid system off. ●
Do not touch the high voltage parts, cables and connectors. ●
If electric wires are exposed inside or ou tside your vehicle, an electric shock may
occur. Never touch exposed electric wires. ●
If a fluid leak occurs, do not touch the flui d as it may be strong alkaline electrolyte
from the hybrid battery (traction battery). If it comes into contact with your skin or
eyes, wash it off immediately with a large amount of water or, if possible, boric acid
solution. Seek immedi ate medical attention.●
If a fire occurs in the hybrid vehicle, leave the vehicle as soon as possible. Never use a
fire extinguisher that is not meant for el ectric fires. Using even a small amount of
water may be dangerous. ●
If your vehicle needs to be towed, do so wi th all four wheels rais ed. If the wheels con-
nected to the electric motor (traction motor) are on the ground when towing, the
motor may continue to generate elec tricity. This may cause a fire. ( → P. 654)●
Carefully inspect the ground under the vehicl e. If you find that liquid has leaked onto
the ground, the fuel system may have been damaged. Leave the vehicle as soon as
possible. ■
Hybrid battery (traction battery) ●
Never resell, hand over or modify the hybrid battery. To prevent accidents, hybrid
batteries that have been removed from a disposed vehicle are collected through
Lexus dealer. Do not dispose of the battery yourself.
Unless the battery is properly collected, th e following may occur, resulting in death
or serious injury:
• The hybrid battery may be illegally dispos ed of or dumped, and it is hazardous to
the environment or someone may touch a high voltage part, resulting in an electric
shock.
• The hybrid battery is intended to be used exclusively with your hybrid vehicle. If
the hybrid battery is used outside of your vehicle or modified in any way, accidents
such as electric shock, heat generation , smoke generation, an explosion and elec-
trolyte leakage may occur.
When reselling or handing over your vehicle, the possibility of an accident is
extremely high because the person receiving the vehicle may not be aware of these
dangers. ●
If your vehicle is disposed of without the hybrid battery having been removed, there is
a danger of serious electric shock if high voltage parts, cables and their connectors
are touched. In the event that your vehicle must be disposed of, the hybrid battery
must be disposed of by your Lexus dealer or a qualified service shop. If the hybrid bat-
tery is not disposed of properly, it may cause electric shock that can result in death or
serious injury.

912. Instrument cluster
2
Instrument cluster
RX450h_RX450hL _U_OM48F85UWarning lights inform the driver of malfun ctions in any of the vehicle’s systems.
Warning lights * 1
(U.S.A.)
Brake system warning light
( → P. 660) (U.S.A.)
Parking brake indicator
( → P. 661)
* 1
(Canada)
Brake system warning light
( → P. 660) (Canada)
Parking brake indicator
( → P. 661)
* 1
Brake system warning light
( → P. 660)
* 1, 2
Brake hold operated
indicator ( → P. 661)
* 1
(if equipped)
Charging system warning
light ( → P. 660) * 1
Electric power steering
system warning light
( → P. 661)
* 1
(U.S.A.)
Malfunction indicator lamp
( → P. 660) * 1
Electric power steering
system warning light
( → P. 661)
* 1
(Canada)
Malfunction indicator lamp
( → P. 660) LKA indicator ( → P. 661)
* 1
SRS warning light
( → P. 660) * 1
Slip indicator ( → P. 661)
* 1
(U.S.A.)
ABS warning light
( → P. 661) * 1, 3
PCS warning light
( → P. 662)
* 1
(Canada) ABS warning light
( → P. 661) * 1, 2
(if equipped)ICS OFF indicator
( → P. 662)

932. Instrument cluster
2
Instrument cluster
RX450h_RX450hL _U_OM48F85U LKA indicator ( → P. 297) (U.S.A.)
Parking brake indicator
( → P. 253, 254)
* 4
LKA indicator ( → P. 297) (Canada)
Parking brake indicator
( → P. 253)(if equipped)
Intuitive parking assist
indicator ( → P. 332)
* 1
Brake hold standby
indicator ( → P. 256)
* 1, 5
(if equipped)
ICS OFF indicator
( → P. 345)
* 1
Brake hold operated
indicator ( → P. 256)
(if equipped)
“BSM” indicator ( → P. 319) EV indicator ( → P. 76)
(if equipped)
“RCTA” indicator
( → P. 319)
* 6
Security indicator
( → P. 83, 86)
* 2, 3
(if equipped)
BSM outside rear view
mirror indicators
( → P. 319) “READY” indicator
( → P. 239)
* 1, 4
Slip indicator ( → P. 384)
* 7
Low outside temperature
indicator ( → P. 96)
* 1, 5
VSC OFF indicator
( → P. 385) * 1, 6
(U.S.A.)
“AIR BAG ON/OFF”
indicator ( → P. 47)
* 1, 5
PCS warning light
( → P. 290) * 1, 6
(Canada)“AIR BAG ON/OFF”
indicator ( → P. 47)

1473-2. Opening, closing and locking the doors
3
Operation of each component
RX450h_RX450hL _U_OM48F85U■
Power back door op erating conditions
If the following conditions are met with the power back door operation enabled ( → P. 112),
the power back door can be opened and closed automatically. ●
When an electronic key is being carried an d the back door opener switch is pressed
*●
When the wireless remote control is used
*●
When the power switch is in ON mode, the vehicle speed must be lower than 2 mph (3
km/h) and one of the following conditions mu st be met in addition to the above condi-
tions:
• The parking brake is engaged.
• The brake pedal is depressed.
• The shift lever is in P.
* : When the operation of the power back door when it is locked has been disabled by a
customized setting, operate the power back door after it has been unlocked.
( → P. 741) 
Touchless sensor (vehicles with a touchless power back door)
The power back door will open automatically when the touchless sensor operation is
enabled ( → P. 112) and the following conditions are met:●
The power back door is fully closed. ●
The electronic key is with in the operational range ( → P. 158)
■
Security feature
If the power back door is not opened within approximately 60 seconds after the vehicle
is unlocked, the security feature will automatically lock the doors again. ●
A hand is held over the upper part of the rear
emblem with fingers closed. (The upper part of
the rear emblem can also be touched.)
The power back door may also be operated
by holding either of the following over the
upper part of the rear emblem. Make sure to
hold it close enough to the rear emblem.
•A gloved hand
•An elbow

176 3-3. Adjusting the seats
RX450h_RX450hL _U_OM48F85U■
The rear seatbacks can be adjusted when (power second-row seat)
■
Power switch mode conditions under which the rear seatbacks can be folded down or
raised
The rear seatbacks can be fold ed down or raised when the power switch is in either of
the following modes: ●
When the power switch is turned off or in ACCESSORY mode ●
When the power switch is in ON mode an d any of the following conditions are met:
• The parking brake is engaged.
• The brake pedal is depressed.
• The shift lever is in P. ■
The rear seatbacks can be folded do wn when (power second-row seat)
When all of the following conditions are met, a rear seat operation switch can be used to
fold down the rear seatback:
●
The other seat operation switch for the se at to be operated is not being pressed.When the rear seatback is in a position within
the range A shown in th e illustration, the rear
seat operation switch (r ear seat) can be used to
adjust the rear seatback.
●
When using the rear seat operation switch
(rear seat): The rear se atback is in a position
within the range A shown in the illustration
with the rear door nearest to the seat to be
operated open ●
When using the rear seat operation switch
(luggage compartment): The rear seatback is
in a position within the range B shown in the
illustration with the back door open Most
upright
position
Most upright
position

1793-3. Adjusting the seats
3
Operation of each component
RX450h_RX450hL _U_OM48F85UWARNING ■
When a rear seatback is folded
Observe the following precautions.
Failure to do so may result in death or serious injury.●
Do not fold down the rear seatbacks while driving. ●
Stop the vehicle on level grou nd, apply the parking brake and shift the shift lever to P.●
Do not allow anyone to sit on a folded re ar seatback or in th e luggage compartment
while driving. ●
Do not allow children to enter the luggage compartment. ■
When operating the rear seatback
Observe the following precautions.
Failure to do so may result in death or serious injury.●
Make sure that passengers are clear of the rear seatback before operating it.●
To prevent hands and other body parts from being caught, keep them away from the
gaps in the seats and the moving parts of the seats when operating a rear seatback.●
Power seat: Do not let children operate th e rear seatback. Othe r passengers may get
caught in the seat. ●
Power seat: Make sure that a ll passengers are clear of a seat before folding it. Do not
let passengers sit in the seat while it is being folded.■
Seat adjustment ●
Second-row seats: To reduce the risk of s liding under the lap belt during a collision,
do not recline the seat more than necessary.
If the seat is reclined excessively, the la p belt may slide past the hips and apply
restraint forces directly to the abdomen, or your neck may contact the shoulder belt,
increasing the risk of de ath or serious injury in the event of an accident.●
Adjustments should not be made while dr iving as the seat may unexpectedly move
and cause the driver to lose control of the vehicle. ■
After adjusting the rear seats
Observe the following precautions.
Failure to do so may result in death or serious injury.●
Manual seats: Make sure that the rear se atback is securely locked in position by
lightly pushing it back and forth. ●
Check that the seat belts are not twisted or caught between or behind in the rear
seatback.

210
RX450h_RX450hL _U_OM48F85U 4-1. Before driving
Driving the vehicle.......................212
Cargo and luggage................... 220
Vehicle load limits...................... 223
Trailer towing (vehicles
with towing package) ............ 224
Trailer towing (vehicles
without towing
package)..................................... 237
Dinghy towing .............................238
4-2. Driving procedures
Power (ignition) switch ............ 239
EV drive mode ............................ 244
Hybrid transmission .................. 246
Turn signal lever ......................... 252
Parking brake .............................. 253
Brake Hold ................................... 256
4 Driving