steering wheel LEXUS RX450h 2018 Manual PDF

640 7-3. Do-it-yourself maintenance
RX450h_RX450hL _U_OM48F85U■
Front side marker lights (vehicle s with single-beam headlights)
To ensure enough space to per-
form work, turn the steering
wheel to rotate the front wheel
away from the bulb to be
replaced.
Remove the 3 fender liner clips. Turn the steering wheel to the left
when replacing the right side light
bulb, and turn the steering wheel to
the right when replacing the left side
light bulb.
When removing a fender liner clip,
use a flathead screwdriver to pry the
center portion out and then remove
the whole clip.
Pull back the fender liner until the
connector is visible.
Partially remove the fender liner
and turn the bulb base counter-
clockwise and remove it.Replacing light bulbs 1
8 2
3

642 7-3. Do-it-yourself maintenance
RX450h_RX450hL _U_OM48F85U■
Front turn signal lights (vehic les with single-beam headlights)
To ensure enough space to per-
form work, turn the steering
wheel to rotate the front wheel
away from the bulb to be
replaced.
Remove the 3 fender liner clips. Turn the steering wheel to the left
when replacing the right side light
bulb, and turn the steering wheel to
the right when replacing the left side
light bulb.
When removing a fender liner clip,
use a flathead screwdriver to pry the
center portion out and then remove
the whole clip.
Pull back the fender liner until the
connector is visible.
Partially remove the fender liner
and turn the bulb base counter-
clockwise and remove it. 1
8 2
3

6538-1. Essential information
8
When trouble arises
RX450h_RX450hL _U_OM48F85USteadily step on the brake pedal with both feet and firmly depress it.Do not pump the brake pedal repeatedly as this will increase the effort required to
slow the vehicle.
Shift the shift lever to N. 
If the shift lever is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the hybrid system. 
If the shift lever cannot be shifted to N
Keep depressing the brake pedal with both feet to reduce vehicle speed as
much as possible.
To stop the hybrid system, press and
hold the power switch for 2 consec-
utive seconds or more, or press it
briefly 3 times or more in succes-
sion.
Stop the vehicle in a safe place by the road.If your vehicle has to be stopped in an emergencyOnly in an emergency, such as if it becomes impossible to stop the vehicle in
the normal way, stop the vehicl e using the following procedure:1
2
3
4
3
Press and hold for 2 seconds or more,
or press briefly 3 times or more4
WARNING ■
If the hybrid system has to be turned off while driving
Power assist for the steering wheel will be lost, making the steering wheel heavier to
turn. Decelerate as much as possible before turning off the hybrid system.5

6578-2. Steps to take in an emergency
8
When trouble arises
RX450h_RX450hL _U_OM48F85U■
While towing
If the engine is not running, the power assist for the brakes and steering will not function,
marking steering and braking more difficult. ■
Wheel nut wrench
Wheel nut wrench is installe d in luggage compartment. ( → P. 674)
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury. ■
When towing the vehicle
■
While towing ●
When towing using cables or chains, avoid sudden starts, etc. which place excessive
stress on the towing eyelets, cables or chains. The towing eyelets, cables or chains
may become damaged, broken debris ma y hit people, and cause serious damage.●
Do not turn the power switch off.
There is a possibility that the steering wheel is locked and cannot be operated.■
Installing towing eyelets to the vehicle
Make sure that towing eyel ets are installed securely.
If not securely installed, towing ey elets may come loose during towing.Be sure to transport the vehicle with all four
wheels raised off the ground. If the vehicle is
towed with the tires contacting the ground, the
drivetrain or related parts may be damaged,
the vehicle may fly off th e truck, or electricity
generated by the operation of the motor may
cause a fire to occur depending on the nature
of the damage or malfunction.

658 8-2. Steps to take in an emergency
RX450h_RX450hL _U_OM48F85UNOTICE ■
To prevent damage to the vehicle when towing using a wheel-lift type truck●
Do not tow the vehicle from the rear when the power switch is off. The steering lock
mechanism is not strong enough to hold the front wheels straight. ●
When raising the vehicle, en sure adequate ground cleara nce for towing at the oppo-
site end of the raised vehicle. Without ad equate clearance, the vehicle could be dam-
aged while being towed. ■
To prevent damage to the vehicle wh en towing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear. ■
To prevent damage to the ve hicle during emergency towing
Do not secure cables or chains to the suspension components. ■
Recreational towing (behind motor home, etc)
Never dinghy tow your vehicle to prevent caus-
ing serious damage to the Hybrid AWD system
and transmission. ( → P. 238)

6658-2. Steps to take in an emergency
8
When trouble arises
RX450h_RX450hL _U_OM48F85U■
The tire pressure warning light ma y come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air
leaks and tire inflation pressure changes caus ed by temperature. In this case, adjusting
the tire inflation pressure will turn off the warning light (aft er a few minutes).■
When a tire is replaced with a spare tire
The compact spare tire is not equipped with a tire pressure warning valve and transmit-
ter. If a tire goes flat, the tire pressure warning light will not turn off even though the flat
tire has been replaced with the spare tire. Replace the spare tire with the repaired tire
and adjust the tire inflation pressure. The tire pressure warnin g light will go off after a few
minutes. ■
Conditions that the tire pressure wa rning system may not function properly
→ P. 616 ■
Warning buzzer
In some cases, the buzzer ma y not be heard due to being in a noisy location or audio
sound. ■
Customization
Some functions can be customized. ( → P. 736)
WARNING ■
If both the ABS and the brake sy stem warning lights remain on
Stop your vehicle in a safe place immediat ely and contact your Lexus dealer. The vehi-
cle will become extremely unstable during br aking, and the ABS system may fail, which
could cause an accident resultin g in death or serious injury.■
When the electric power steering system warning light comes on
When the light comes on yellow, the assist to the power steering is restricted. When the
light comes on red, the assist to the power steering is lost and ha ndling operations of
the steering wheel become extremely heavy. When steering wheel operations are
heavier than usual, grip the steering wheel firmly and operate it using more force than
usual. ■
If the tire pressure warning light comes on
Be sure to observe the following precaution s. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.●
Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure
immediately. ●
If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire . Check the tires. If a tire is flat, change it
with the spare tire and have the flat tire repaired by the nearest Lexus dealer. ●
Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes. ■
If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

7179-1. Specifications
9
Vehicle specifications
RX450h_RX450hL _U_OM48F85U 
Type ASteering Free play Less than 1.2 in. (30 mm)
Tires and wheels Tire size 235/65R18 106V, T165/90D18 107M (spare)
Tire inflation pressure
(Recommended cold tire
inflation pressure) Front tire
33 psi (230 kPa, 2.3 kgf/cm 2
or bar)
Rear tire
33 psi (230 kPa, 2.3 kgf/cm 2
or bar)
Spare tire
60 psi (420 kPa, 4.2 kgf/cm 2
or bar)
Driving at high speeds (above 100 mph [160 km/h])
(in countries where such speeds are permitted by
law)
Add 5 psi (30 kPa, 0.3 kgf/cm 2
or bar) to the
front and rear tires. Never exceed the maximum
cold tire inflation pressu re indicated on the tire
sidewall.
Wheel size 18 × 8 J, 18 × 4 T (spare)
Wheel nut torque 76 ft•lbf (103 N•m, 10.5 kgf•m)

742 9-2. Customization
RX450h_RX450hL _U_OM48F85U■
Driving position memory ( → P. 181)
■
Steering wheel ( → P. 189)■
Outside rear view mirrors ( → P. 193)Function Default setting Customized setting
Driver’s seat movement when
exiting the vehicle Standard Off
O O
Partial
Selecting doors linked to the
memory recall function Driver’s door All doors — O 1 2
Function Default setting Customized setting
Auto tilt away function On Off — O 1 2
Function Default setting Customized setting
Automatic mirror folding and
extending operation Linked to the lock-
ing/unlocking of the
doors Off
— O
Linked to operation
of the power switch 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

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”.