
4087-2. Steps to take in an emergency
3Insert the towing eyelet into the
hole and tighten partially by hand.
4 Tighten down the towing eyelet
securely using a wheel nut wrench
or hard metal bar.
5 Securely attach cables or chains to
the towing eyelet.
Take care not to damage the vehicle body.
6Enter the vehicle being towed and
start the hybrid system.
If the hybrid system does not start, turn the
power switch to ON mode.
7Shift the shift lever to N and release
the parking brake.
Turn automatic mode off. ( P.194)
When the shift lever cannot be shifted:
P.190
■While towing
If the hybrid system is off, the power assist
for the brakes and steering will not function,
making steering and braking more difficult.
■Wheel nut wrench
Wheel nut wrench is installed in luggage
compartment. ( P.425)

4187-2. Steps to take in an emergency
If the tire pressure warning light comes
on
1 After the temperature of the tires has
lowered sufficiently, check the inflation
pressure of each tire and adjust them to
the specified level.
2 If the warning light does not turn off
even after several minutes have
elapsed, check that the inflation pres-
sure of each tire is at the specified level
and perform initialization. ( P.378)
If the warning light does not turn off several
minutes after the initia lization has been per-
formed, have the vehicle inspected by your
Lexus dealer immediately.
■The tire pressure warning light may
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
caused by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the
warning light (after 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 warn-
ing 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 warning light will go off after a
few minutes.
■Conditions that the tire pressure warn-
ing system may not function properly
P.377
■Customization
Some functions can be customized.
( P.472)
WARNING
■If both the ABS and the brake system
warning lights remain on
Stop your vehicle in a safe place immedi-
ately and contact your Lexus dealer.
The vehicle will become extremely
unstable during br aking, and the ABS
system may fail, which could cause an
accident resulting 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 st eering is restricted.
When the light comes on red, the assist
to the power steering is lost and handling
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 precau-
tions.
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 infla-
tion pressure immediately.
●If the tire pressure warning light comes
on even after tire inflation pressure
adjustment, it is prob able 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 brak-
ing.
If the vehicle tires deteriorate, you
could lose control of the steering
wheel or the brakes.

4347-2. Steps to take in an emergency
7Confirm it is not loose after tighten-
ing:
1 Push and pull the tire
2 Try rotating
Visually check to ensure tire is not hung on
surrounding parts.
If looseness or misassembly exists, repeat
steps 2 to 7.
8 Repeat step 7, any time the tire is
lowered or disturbed.
9 Stow the jack and all tools.
■The compact spare tire
●The compact spare tire is identified by the
label “TEMPORARY USE ONLY” on
the tire sidewall. Use the compact spare
tire temporarily, and only in an emer-
gency.
●Make sure to check the tire inflation pres-
sure of the compact spare tire. ( P.458)
■When using the compact spare tire
As the compact spare tire is not equipped
with a tire pressure warning valve and trans-
mitter, low inflation pressure of the spare
tire will not be indicated by the tire pressure
warning system. Also, if you replace the
compact spare tire after the tire pressure
warning light comes on, the light remains
on.
■When the compact spare tire is
equipped
When driving with the compact spare tire
installed, the vehicle he ight will be different
than when driving with standard tires.
■If you have a flat front tire on a road cov-
ered with snow or ice
Install the compact spare tire on one of the
rear wheels of the ve hicle. Perform the fol-
lowing steps and fit tire chains to the front
tires:
1 Replace a rear tire with the compact
spare tire.
2 Replace the flat front tire with the tire
removed from the rear of the vehicle.
3 Fit tire chains to the front tires.
WARNING
■When using the compact spare tire
●Remember that the compact spare tire
provided is specific ally designed for
use with your vehicle. Do not use your
compact spare tire on another vehicle.
●Do not use more than one compact
spare tire simultaneously.
●Replace the compact spare tire with a
standard tire as soon as possible.
●Avoid sudden acceleration, abrupt
steering, sudden braking and shifting
operations that cause sudden engine
braking.
■When the compact spare tire is
attached
The vehicle speed may not be correctly
detected, and the following systems may
not operate correctly:
• ABS & Brake assist
•VSC
•TRAC
• Trailer Sway Control
•EPS
•VDIM
• Adaptive Variable Suspension System (if equipped)
• Dynamic radar cruise control with full-speed range

4367-2. Steps to take in an emergency
One of the following may be the cause
of the problem:
The electronic key may not be func-
tioning properly. ( P.439)
There may not be sufficient fuel in
the vehicle’s tank.
Refuel the vehicle.
There may be a malfunction in the
immobilizer system. ( P.73)
There may be a malfunction in the
steering lock system.
The hybrid system may be malfunc-
tioning due to an electrical problem
such as electronic key battery
depletion or a blown fuse. However,
depending on the type of malfunc-
tion, an interim measure is available
to start the hybrid system. ( P.437)
One of the following may be the cause
NOTICE
■Proper storage of the spare tire
(RX450hL)
●If the hoist assembly is slanted when
stowing a tire, the hoist assembly may
become stuck in the wheel opening
and the tire may not be raised properly,
causing damage to the wheel or the
wire cable.
●If the spare tire clamp bolt is turned
without a tire on the hoist assembly, the
wire cable may not be able to be low-
ered. If the wire cable cannot be low-
ered, contact your Lexus dealer.
If the hybrid system will not
start
Reasons for the hybrid system not
starting vary depending on the situ-
ation. Check the following and per-
form the appropriate procedure:
The hybrid system will not start
even though the correct starting
procedure is being followed.
( P.182)
The interior lights and head-
lights are dim, or the horn does
not sound or sounds at a low vol-
ume.

4588-1. Specifications
*: Minimum pedal clearance when depressed with a force of 110 lbf (490 N, 50 kgf) while
the hybrid system is operating.
Type A
Brake pad wear limit0.04 in. (1.0 mm)
Fluid typeFMVSS No. 116 DOT 3 or SAE J1703
FMVSS No. 116 DOT 4 or SAE J1704
Steering
Free playLess than 1.2 in. (30 mm)
Tires and wheels
Tire size235/65R18 106V, T165/9 0D18 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 pres-
sure indicated on the tire sidewall.
Wheel size18 8J, 18 4T (spare)
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

4788-2. Customization
■Steering wheel (P.146)
■Outside rear view mirrors ( P.148)
*:If equipped
■Power windows, and moon roof* or panoramic moon roof* ( P.151, 153, 156)
*:If equipped
■Moon roof* ( P.153)
*:If equipped
FunctionDefault settingCustomized setting
Auto tilt away functionOnOff——O
FunctionDefault settingCustomized setting
Automatic mirror folding and
extending operation
*
Linked to the lock-
ing/unlocking of the doorsOff
——OLinked to operation of the power switch
FunctionDefault settingCustomized setting
Mechanical key linked opera-
tionOffOn——O
Wireless remote control linked
operationOffOn (open only)——O
Wireless remote control linked
operation signal (buzzer)OnOff——O
FunctionDefault settingCustomized setting
Linked operation of compo-
nents when mechanical key is
used (open only)
Slide onlyTilt only——O
Linked operation of compo-
nents when wireless remote
control is used
Slide onlyTilt only——O
ABC
ABC
ABC
ABC

4808-2. Customization
■PCS (Pre-Collision System) (P.218)
■LTA (Lane Tracing Assist) ( P.225)
■RSA (Road Sign Assist)* ( P.234)
*:If equipped
FunctionDefault settingCustomized setting
PCS (Pre-Collision System)OnOff—O—
Adjust alert timingMiddleEarly—O—Late
FunctionCustomized setting
Lane centering functionOn, Off—O—
Steering assist functionOn, Off—O—
Alert typeSteering wheel vibration, Buzzer—O—
Alert sensitivityHigh, Standard—O—
Vehicle sway warning functionOn, Off—O—
Vehicle sway warning sensitiv-
ityHigh, Standard, Low—O—
FunctionDefault settingCustomized setting
RSA (Road Sign Assist)OnOff—O—
Excess speed notification
methodDisplay onlyNo notification—O—Display and buzzer
Excess speed notification level1 mph (2 km/h)3 mph (5 km/h)—O—5 mph (10 km/h)
Other notifications method
(No-entry notification)Display onlyNo notification—O—Display and buzzer
ABC
ABC
ABC

502What to do if... (Troubleshooting)
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
If you lose your mechanical keys,
new genuine mechanical keys can
be made by your Lexus dealer.
( P.438)
If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.438)
Is the electronic key battery weak or
depleted? ( P.386)
Is the power switch in ON mode?
When locking the doors, turn the power
switch off. ( P.185)
Is the electronic key left inside the
vehicle?
When locking the door s, make sure that
you have the electronic key on your per-
son.
The function may not operate prop- erly due to the condition of the radio
wave. (
P.126)
Is the child-protector lock set?
The rear door cannot be opened from
inside the vehicle when the lock is set.
Open the rear door fr om outside and then
unlock the child-protector lock. ( P.112)
Did you press the power switch
while firmly depressing the brake
pedal? ( P.182)
Is the shift lever in P? ( P.182)
Is the electronic key anywhere
detectable inside the vehicle?
( P.125)
Is the steering wheel unlocked?
( P.183)
Is the electronic key battery weak or
depleted?
In this case, the hy brid system can be
started in a temporary way. ( P.440)
Is the 12-volt battery discharged?
( P.441)
Is the power switch in ON mode?
If you have a problem, check the
following before contacting your
Lexus dealer.
The doors cannot be locked,
unlocked, opened or closed
You lose your keys
The electronic key does not
operate properly
The doors cannot be locked or
unlocked
The rear door cannot be opened
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