2018 LEXUS RX450h headlights

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.

690 8-2. Steps to take in an emergency
RX450h_RX450hL _U_OM48F85UOne of the following may be the cause of the problem: ●
The electronic key may not be functioning properly.
( → P. 692)●
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ●
There may be a malfunction in the immobilizer system. ( → P. 83)●
There may be a malfunction in the steering lock system. ●
The hybrid system may be malfunctioni ng due to an electrical problem such
as electronic key battery depletion or a blown fuse. However, depending on
the type of malfunction, an interim meas ure is available to start the hybrid sys-
tem. ( → P. 691)
One of the following may be the cause of the problem: ●
The 12-volt battery may be discharged. ( → P. 695)●
The 12-volt battery terminal connections may be loose or corroded.
( → P. 691)If the hybrid system will not start Reasons for the hybrid system not star ting vary depending on the situation.
Check the following and perform the appropriate procedure:
The hybrid system will no t start even though the correct starting proce-
dure is being followed. ( → P. 239)
The interior lights and headlights are d im, or the horn does not sound or
sounds at a low volume.

6918-2. Steps to take in an emergency
8
When trouble arises
RX450h_RX450hL _U_OM48F85UOne of the following may be the cause of the problem: ●
The 12-volt battery may be discharged. ( → P. 695)●
One or both of the 12-volt battery terminals may be disconnected. ( → P. 605)Contact your Lexus dealer if the problem cannot be repaired, or if repair procedures
are unknown.
When the hybrid system does not start, the following steps can be used as an
interim measure to start the hybrid system if the power switch is functioning nor-
mally.
Do not use this starting procedur e except in cases of emergency.
Turn the power switch to ON mode an d check that the parking brake is set.
( → P. 240, 253)
Shift the shift lever to P.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for ab out 15 seconds while depressing the
brake pedal firmly.
Even if the hybrid system can be starte d using the above steps, the system may
be malfunctioning. Have the vehicle inspected by your Lexus dealer.The interior lights and headlights do not turn on, or the horn does not
sound.
Emergency start function 1
2
3
4

6978-2. Steps to take in an emergency
8
When trouble arises
RX450h_RX450hL _U_OM48F85UStart the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximatel y 5 minutes to recharge the 12-volt bat-
tery of your vehicle.
Open and close any of the doors of yo ur vehicle with the power switch off.
Maintain the engine speed of the seco nd vehicle and start the hybrid system
of your vehicle by turning th e power switch to ON mode.
Make sure the “READY” indicator comes on. If the indicator light does not
come on, contact your Lexus dealer.
Once the hybrid system has started, remove the jumper cables in the exact
reverse order from which they were connected.
Close the exclusive jump starting termin al cover, and reinstall the fuse box
cover to its original position.
Once the hybrid system starts, have th e vehicle inspected at your Lexus dealer
as soon as possible. ■
Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting. ■
To prevent 12-volt battery discharge ●
Turn off the headlights and the audio system while the hybrid system is off. ●
Turn off any unnecessary electrical componen ts when the vehicle is running at a low
speed for an extended period , such as in heavy traffic.■
When removing the battery terminals
When the battery terminals are removed, the information stored in the ECU is cleared.
Before removing the battery termin als, contact your Lexus dealer.6
7
8
9
10
11

7199-1. Specifications
9
Vehicle specifications
RX450h_RX450hL _U_OM48F85ULight bulbs Light bulbs Bulb No. W Type
Exterior Front side marker lights
* 1
⎯ 5 B
Front turn signal lights
* 1
7444NA 28/8 A
Rear turn signal lights
* 1
⎯ 21 A
Back-up lights 921 16 B
Interior Door courtesy lights
* 2
⎯ 5 B
Vanity lights ⎯ 8 B
Luggage compartment light ⎯ 5 B
A: Wedge base bulbs (amber)
B: Wedge base bulbs (clear)
* 1
: Vehicles with single-beam headlights
* 2
: Vehicles without door trim ornament lights

744 9-2. Customization
RX450h_RX450hL _U_OM48F85U■
Turn signal lever ( → P. 252)
■
Automatic light control system ( → P. 258)
■
Lights ( →
P. 258)
* 1
:Except for Canada
* 2
: If equipped
■
Rain-sensing windshield wipers ( →
P. 267)Function Default setting Customized setting
The number of times the turn sig-
nal lights flash automatically
when the turn signal lever is
moved to the first position during
a lane change 3 5
— O7
Off 1 2
Function Default setting Customized setting
Light sensor sensitivity Standard -2 to 2 O O
Time elapsed before headlights
automatically turn off after doors
are closed 30 seconds Off
OO
60 seconds
90 seconds 1 2
Function Default setting Customized setting
Daytime running lights On Off
* 1
O O
Welcome lighting On Off — O
AFS (Adaptive Front-lighting
System)
* 2
On Off — O
Windshield wiper linked head-
light illumination On Off — O 1 2
Function Default setting Customized setting
Wiper operation when the wiper
switch is in the “AUTO” position Rain-sensing oper-
ation Intermittent opera-
tion linked to vehi-
cle speed (with
interval adjuster) — O 1 2

762
RX450h_RX450hL _U_OM48F85UBoulon de réglage A
Boulon de réglage B
Vérifiez que le réservoir de carburant du véhicule est plein et que la zone
autour des phares n'est pas déformée.
Stationnez le véhicule sur une surface plane.
Installez-vous dans le siège conducteur.
Balancez le véhicule plusieurs fois.Headlight aim instructions for Canadian owners (in
French) (vehicles with single-beam headlights) The following is a French explanation of headlight aim instructions from the
headlight aim section in this manual.
Boulons de réglage du mouvement vertical 1
2
Avant de vérifier le réglage des phares 1
2
3
4