2018 LEXUS RX450h lights

1913-4. Adjusting the steering wheel and mirrors
3
Operation of each component
RX450h_RX450hL _U_OM48F85UThe height of the rear view mirror can be adjusted to suit your driving posture.
Adjust the height of the rear view mir-
ror by moving it up and down.
Responding to the level of brightness of the headlights of vehicles behind, the
reflected light is automatically reduced.
Changing automatic anti-glare func-
tion mode
ON/OFF When the automatic anti-glare function
is in ON mode, the indicator illuminates.
The function will set to ON mode each
time the power switch is turned to ON
mode.
Pressing the button turns the function to
OFF mode. (The indicator also turns
off.)Inside rear view mirror The rear view mirror’s position can be adjusted to enable sufficient confirma-
tion of the rear view.
Adjusting the height of rear view mirror
Auto anti-glare function
Indicator

211
4 Driving
RX450h_RX450hL _U_OM48F85U4-3. 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 A ssist) .......... 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................................ 394

230 4-1. Before driving
RX450h_RX450hL _U_OM48F85UUse the wire harness stored in the rear
end under body. ■
Auto current cut-off function
In case of over current, the auto cut-off function stops the power flowing to the trailer
lights to prevent damage to the vehicle’s electrical system.
This function is activated when the rated current of any of the following trailer light circuit
components is exceeded: ●
Tail lights: maximum 7.8 A ●
Stop/turn signal light (right): maximum 4.5 A ●
Stop/turn signal light (left): maximum 4.5 A ■
When the auto current cu t function is activated
If a trailer light does not come on due to th e activation of the auto current cut function,
the light system will need to be reset.
Follow the reset procedure shown below. ●
If a tail light does not come on, turn off the headlight switch. ●
If the right-side stop/turn signal light does not come on, put the turn signal in the off
position or remove foot from the brake pedal.●
If the left-side stop/turn signal light does not come on, put the turn signal in the off posi-
tion or remove foot from the brake pedal.
If the emergency flashers do not operate, press the emergency flasher switch to turn
them off.
After the light system is reset, operate the lig ht switches again to see if the lights operate
normally.
If the lights do not operate normally, have the vehicle inspected by your Lexus dealer.Connecting trailer lights

2314-1. Before driving
4
Driving
RX450h_RX450hL _U_OM48F85UYour vehicle will handle differently when towing a trailer. Help to avoid an acci-
dent, death or serious injury, keep the following in mind when towing:●
Speed limits for towing a tr ailer vary by state or province. Do not exceed the
posted towing speed limit. ●
Lexus recommends that the vehicle-traile r speed limit is 65 mph (104 km/h)
on a flat, straight, dry road. Do not exce ed this limit, the posted towing speed
limit or the speed limit for your trailer as set forth in your trailer owner’s man-
ual, whichever is lowest. Instability of the towing vehicle-trailer combination
(trailer sway) increases as speed incr eases. Exceeding speed limits may cause
loss of control. ●
Before starting out, check the trailer lights, tires and the vehicle-trailer con-
nections. Recheck after driving a short distance. ●
Practice turning, stopping and reversing with the trailer attached in an area
away from traffic until you become acc ustomed to the feel of the vehicle-
trailer combination. ●
Reversing with a trailer attached is di fficult and requires practice. Grip the
bottom of the steering wheel and move your hand to the left to move the
trailer to the left. Move your hand to the right to move the trailer to right. (This
is generally opposite to reversing with out a trailer attached.) Avoid sharp or
prolonged turning. Have someone guid e you when reversing to reduce the
risk of an accident. ●
As stopping distance is increased when towing a trailer, vehicle-to vehicle dis-
tance should be increased. For each 10 mph (16 km/h) of speed, allow at least
one vehicle and trailer length. ●
Avoid sudden braking as you may skid, re sulting in the trailer jackknifing and a
loss of vehicle control. This is especi ally true on wet or slippery surfaces.●
Avoid jerky starts or sudden acceleration. ●
Avoid jerky steering and sharp turns, an d slow down before making a turn.●
Note that when making a turn, the trailer wheels will be closer than the vehicle
wheels to the inside of the turn. Compensate by making a wider than normal
turning radius. ●
Slow down before making a turn, in cross winds, on wet or slippery surfaces,
etc.
Increasing vehicle speed can destabilize the trailer. ●
Take care when passing other vehicles . Passing requires considerable dis-
tance. After passing a vehicle, do not fo rget the length of your trailer, and be
sure you have plenty of room before changing lanes.Trailer towing tips

2334-1. Before driving
4
Driving
RX450h_RX450hL _U_OM48F85U■
Matching trailer ball height to trailer coupler height
■
Before towing
Check that the followin g conditions are met:●
Ensure that your vehicle’s tires are properly inflated. ( → P. 717)●
Trailer tires are inflated a ccording to the trailer manufacturer’s recommendation.●
All trailer lights work as required by law. ●
All lights work each time you connect them.●
The trailer ball is set at the proper height for the coupler on the trailer. ●
The trailer is level when it is hitched.
Do not drive if the trailer is not level, and check for improper to ngue weight, overload-
ing, worn suspension, or other possible causes. ●
The trailer cargo is securely loaded. ●
The rear view mirrors conform to all applicable federal, state/provincial or local regula-
tions. If they do not, install rear view mirrors appropriate for towing purposes.■
AVS (adaptive variable suspension system) (if equipped)
The suspension can be switched fo r improvement in driveability. ( → P. 383)No matter which class of tow hitch
applies, for a more safe trailer hookup,
the trailer ball setup must be the proper
height for the coupler on the trailer.
Coupler
Trailer ball 1
2

236 4-1. Before driving
RX450h_RX450hL _U_OM48F85UWARNING ■
Hitch
Trailer hitch assemblies have different weight capacities established by the hitch manu-
facturer. Even though the vehicle may be phys ically capable of towing a higher weight,
the operator must determine the maximum weight rating of the particular hitch assem-
bly and never exceed the maximum weight rating specified for the trailer-hitch.
Exceeding the maximum weight rating set by the trailer-hitch manufacturer can cause
an accident resulting in death or serious personal injuries. ■
When towing a trailer
Lexus recommends trailers with brakes that conform to any applicable federal and
state/provincial regulations. ●
If the gross trailer weight exceeds unbraked TWR, trailer brakes are required. Lexus
recommends trailers with brakes that conform to all applicable federal and state/pro-
vincial regulations. ●
Never tap into your vehicle’s hydraulic system, as this will lower the vehicle’s braking
effectiveness. ●
Never tow a trailer without using a safety chain securely attached to both the trailer
and the vehicle. If damage occurs to the co upling unit or hitch ball, there is danger of
the trailer wandering into another lane.
NOTICE ■
When installing a trailer hitch
Use only the position recommended by your Lexus dealer. Do not install the trailer
hitch on the bumper; this may cause body damage. ■
Do not directly splice trailer lights
Do not directly splic e trailer lights. Directly splicin g trailer lights may damage your
vehicle’s electrical system and cause a malfunction.

252 4-2. Driving procedures
RX450h_RX450hL _U_OM48F85URight turn
Lane change to the right (move the
lever partway and release it) The right hand signals will flash 3 times.
Lane change to the left (move the
lever partway and release it) The left hand signals will flash 3 times.
Left turn
■
Turn signals can be operated when
The power switch is in ON mode. ■
If the indicator flashes faster than usual
Check that a light bulb in the front or rear turn signal lights has not burned out.■
If the turn signals stop flashing befo re a lane change has been performed
Operate the lever again. ■
Customization
Some functions can be customized. ( → P. 736)Turn signal lever Operating instructions 1
2
3
4

258
RX450h_RX450hL _U_OM48F85U4-3. Operating the lights and wipers
Turning the end of the lever turns on the lights as follows:
Headlight switch The headlights can be operated manually or automatically.
Operating instructions U.S.A. CanadaThe side marker, parking, tail,
license plate, Instrument
panel lights, and daytime run-
ning lights ( → P. 260) turn on.
The headlights and all the
lights listed above (except
daytime running lights) turn
on.
The headlights, daytime run-
ning lights ( → P. 260) and all
the lights listed above turn on
and off automatically.
(When the power switch is in
ON mode.)
Off
The daytime running lights
turn on. ( → P. 260) 1
2
3
4 (U.S.A.)
(Canada)