lights LEXUS RX450h 2018 Manual Online

6437-3. Do-it-yourself maintenance
7
Maintenance and care
RX450h_RX450hL _U_OM48F85URemove the light bulb.
Install a new light bulb and then
install the bulb base to the light
unit by inserting it and turning it
clockwise. After installing th e bulb base, wiggle
it lightly to make sure it is securely
installed and turn on the turn signal
lights to visually check that there is no
light leaking from between the bulb
base and light unit.
Reinstall the fender liner and
install the 3 fender liner clips. 4
5
6

644 7-3. Do-it-yourself maintenance
RX450h_RX450hL _U_OM48F85U■
Rear turn signal lights (vehic les with single-beam headlights)
Open the back door and apply
protective tape to the vehicle
body around the taillight. Use masking tape, etc. Do not use
duct tape, as it may leave residue or
damage the paint when removed.
Using a flathead screwdriver,
remove the cover. To prevent scratching the vehicle,
wrap the tip of the flathead screw-
driver with a cloth, etc.
Remove the 2 screws. 1
2
3

646 7-3. Do-it-yourself maintenance
RX450h_RX450hL _U_OM48F85UInstall a new light bulb and then
install the bulb base to the light
unit by inserting it and turning it
clockwise. After installing th e bulb base, wiggle
it lightly to make sure it is securely
installed and turn on the rear turn sig-
nal lights to visually check that there
is no light leaking from between the
bulb base and light unit.
Install the light unit. Align the tabs and push the light unit
toward the front of the vehicle to
install it.
Install the 2 screws.
Install the cover.
Remove the protective tape. 47
8
9
10
11

6477-3. Do-it-yourself maintenance
7
Maintenance and care
RX450h_RX450hL _U_OM48F85U■
Back-up lights
Open the back door and remove
the cover. Using a flathead screwdriver, remove
the cover.
To prevent scratching to the vehicle,
wrap the tip of the flathead screw-
driver with a cloth, etc.
Turn the bulb base counterclock-
wise and remove it.
Remove the light bulb.
Install a new light bulb and then
install the bulb base to the light
unit by inserting it and turning it
clockwise. After installing th e bulb base, wiggle
it lightly to make sure it is securely
installed and turn on the back-up
lights to visually check that there is no
light leaking from between the bulb
base and light unit. 1
2
3
4

648 7-3. Do-it-yourself maintenance
RX450h_RX450hL _U_OM48F85UInstall the cover. Align the tabs of the cover with the
grooves and install the cover.
■
Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by your Lexus
dealer. ●
Headlight low beams ●
Headlight high beams ●
Front turn signal lights (vehic les with triple-beam headlights)●
Parking lights and daytime running lights ●
Fog lights ●
Cornering lights (if equipped) ●
Front side marker lights (vehicles with triple-beam headlights) ●
Side turn signal lights ●
Stop/tail lights ●
Rear turn signal light (vehicles with triple-beam headlights) ●
Rear side marker lights ●
High mounted stoplight ●
License plate lights ●
Outer foot lights 5

6497-3. Do-it-yourself maintenance
7
Maintenance and care
RX450h_RX450hL _U_OM48F85U■
LED lights
The headlight low beams, headlight high beams, front turn signal lights (vehicles with tri-
ple-beam headlights), parking lights and da ytime running lights, fog lights, cornering
lights (if equipped), front side marker lights (vehicles with triple-b eam headlights), side
turn signal lights, stop/tail lights, rear turn signal light (vehicles with triple-beam head-
lights), rear side marker lights, high mounted stoplight, license plate lights, and outer foot
lights consist of a number of LEDs. If any of the LEDs has burned out, take your vehicle to
your Lexus dealer to have the light replaced. ■
Condensation build-up on the inside of a lens
Temporary condensation build-up on the inside of the headlight lens does not indicate a
malfunction. Contact your Lexus dealer for mo re information in the following situations:●
Large drops of water have built up on the inside of a lens. ●
Water has built up inside a headlight. ■
When replacing light bulbs
→ P. 634
WARNING ■
To prevent injury
Before performing any light bulb replacement procedure, be sure to turn the power
switch off. Failure to do so may result in burns from hot components or a part of your
body may get caught on an operating co mponent, possibly causing serious injury.■
Replacing light bulbs ●
Turn off the lights. Do not attempt to replac e the bulb immediately after turning off the
lights.
The bulbs become very hot and may cause burns. ●
Do not touch the glass portion of the light bu lb with bare hands. When it is unavoid-
able to hold the glass portion, use and hold with a clean dry cloth to avoid getting
moisture and oils on the bulb.
Also, if the bulb is sc ratched or dropped, it may blow out or crack.●
Fully install light bulbs and any parts used to secure them. Failure to do so may result
in heat damage, fire, or water entering th e headlight unit. This may damage the head-
lights or cause condensation to build up on the lens.●
Do not attempt to repair or disassemble th e light bulbs, connector s, electric circuits
or component parts.
Doing so may result in death or se rious injury due to electric shock.■
To prevent damage or fire ●
Make sure bulbs are fully seated and locked. ●
Check the wattage of the bulb before installing to prevent heat damage.

652
RX450h_RX450hL _U_OM48F85U8-1. Essential information
Press the switch. All the turn signal lights will flash. To turn
them off, press the switch once again.
■
Emergency flashers
If the emergency flashers are used for a long time while the hybrid system is not operat-
ing (while the “READY” indicator is not illu minated), the 12-volt battery may discharge.
Emergency flashers The emergency flashers are used to warn other drivers when the vehicle has
to be stopped on the road due to a breakdown, etc.

660 8-2. Steps to take in an emergency
RX450h_RX450hL _U_OM48F85UIf a warning light turns on or a warning buzzer
sounds Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes off, this does not necessar-
ily indicate a malfunction in the system . However, if this continues to occur,
have the vehicle inspecte d by your Lexus dealer.
Warning light and warning buzzer list Warning light Warning light/Details/Actions(U.S.A.)
(Canada)
Brake system warning light
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
→ Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
Brake system warning light
Indicates a malfunction in:
• The regenerative braking system;
• The electronically controlled brake system; or
• The electric parking brake
→ Have the vehicle inspected by your Lexus dealer immediately. (If equipped)
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
→ Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous. (U.S.A.)
(Canada)
Malfunction indicator lamp
Indicates a malfunction in:
• The hybrid system;
• The electronic engine control system; or
• The electronic throttle control system
→ Have the vehicle inspected by your Lexus dealer immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
→ Have the vehicle inspected by your Lexus dealer immediately.

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.

6678-2. Steps to take in an emergency
8
When trouble arises
RX450h_RX450hL _U_OM48F85UThe warning lights and warning buzzers operate as follows depending on the
content of the message. If a message indicates the need for inspection by a
dealer, have the vehicle inspected by your Lexus dealer immediately.If a warning message is displayed The multi-information display shows warn ings of system malfunctions, incor-
rectly performed operations, and messag es that indicate a need for mainte-
nance. When a message is shown, perform the correction procedure
appropriate to the message. 
Except F SPORT models 
F SPORT models
Master warning light The master warning light also comes on or flashes in order to indicate that a message
is currently being displayed on the multi-information display.
Multi-information display
If any of the warning messages are sh own again after the appropriate actions
have been performed, contact your Lexus dealer.
Messages and warnings 1
2
System
warning
light Warning buzzer
* Warning
Comes
on ⎯ Sounds Indicates an important situation, such
as when a system related to driving is
malfunctioning or that danger may
result if the correction procedure is not
performed
⎯ Comes on
or flashes Sounds Indicates an important situation, such
as when the systems shown on the
multi-information display may be mal-
functioning