trailer LEXUS RX450H 2019 Owners Manual

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4-1. Before driving Driving the vehicle ......................212
Cargo and luggage .................. 220
Vehicle load limits ..................... 223
Trailer towing (vehicles with towing package)............ 224
Trailer towing (vehicles without towing
package)..................................... 237
Dinghy towing ............................. 238
4-2. Driving procedures Power (ignition) switch............ 239
EV drive mode ............................ 244
Hybrid transmission.................. 246
Turn signal lever ......................... 252
Parking brake .............................. 253
Brake Hold ................................... 256
4-3. 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 Assist).......... 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
4Driving

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RX450h_RX450hL_U
4-1. Before drivingDriving the vehicle.......................212
Cargo and luggage................... 220
Vehicle load limits...................... 223
Trailer towing (vehicles with towing package) ............ 224
Trailer towing (vehicles without towing
package)..................................... 237
Dinghy towing .............................238
4-2. Driving procedures Power (ignition) switch ............ 239
EV drive mode ............................ 244
Hybrid transmission .................. 246
Turn signal lever ......................... 252
Parking brake .............................. 253
Brake Hold ................................... 256
4Driving

2144-1. Before driving
RX450h_RX450hL_U
■Breaking in your new Lexus
To extend the life of the vehicle, observin g the following precautions is recommended:
●For the first 200 miles (300 km):
Avoid sudden stops.
●For the first 500 miles (800 km):
Do not tow a trailer.
●For the first 1000 miles (1600 km):
• Do not drive at extremely high speeds.
• Avoid sudden acceleration.
• Do not drive continuously in low gears.
• Do not drive at a constant speed for extended periods.
■Operating your vehicle in a foreign country
Comply with the relevant vehicle registration laws and confirm the availability of the cor-
rect fuel. ( P. 712)
■Eco-friendly driving
 P. 121
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When starting the vehicle
Always keep your foot on the brake pedal while stopped with the “READY” indicator is
illuminated. This prevents the vehicle from creeping.
■When driving the vehicle
●Do not drive if you are unfamiliar with the location of the brake and accelerator ped-
als to avoid depressing the wrong pedal.
• Accidentally depressing the accelerator pedal instead of the brake pedal will
result in sudden acceleration that may lead to an accident.
• When backing up, you may twist your body around, leading to difficulty in operat-
ing the pedals. Make sure to operate the pedals properly.
• Make sure to keep a correct driving po sture even when moving the vehicle only
slightly. This allows you to depress th e brake and accelerator pedals properly.
• Depress the brake pedal using your right foot. Depressing the brake pedal using your left foot may delay re sponse in an emergency, resulting in an accident.
●The driver should pay extra attention to pedestrians when the vehicle is powered only
by the electric motor (traction motor). As there is no engine noise, the pedestrians
may misjudge the vehicle’s movement.
●Do not drive the vehicle over or stop the vehicle near flammable materials.
The exhaust system and exhaust gases can be extremely hot. These hot parts may
cause a fire if there is any flammable material nearby.

2204-1. Before driving
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Cargo capacity depends on the total weight of the occupants.
(Cargo capacity) = (Total load capac ity) — (Total weight of occupants)
Steps for Determining Correct Load Limit —
(1) Locate the statement “The combined weight of occupants and cargo should
never exceed XXX kg or XXX lbs. ” on your vehicle’s placard.
(2) Determine the combined weight of th e driver and passengers that will be rid-
ing in your vehicle.
(3) Subtract the combined weight of th e driver and passengers from XXX kg or
XXX lbs.
(4) The resulting figure equals the ava ilable amount of cargo and luggage load
capacity.
For example, if the “XXX” amount equals 1400 lbs. and there will be five 150
lb passengers in your vehicle, the amou nt of available cargo and luggage load
capacity is 650 lbs. (1400  750 (5 150) = 650 lbs.)
(5) Determine the combined weight of luggage and cargo being loaded on the
vehicle. That weight may not safely exceed the available cargo and luggage
load capacity calculated in Step 4.
(6) If your vehicle will be towing a trailer, load from your trailer will be transferred
to your vehicle. Consult this manual to determine how this reduces the avail-
able cargo and luggage load capacity of your vehicle.
( P. 223)
Vehicles without towing package: Lexus does not recommend towing a trailer with
your vehicle. Your vehicle is not designed for trailer towing.
Cargo and luggage
Take notice of the following informat ion about storage precautions, cargo
capacity and load.
Capacity and distribution

2234-1. Before driving
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Driving
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◆Total load capacity (vehicle capacity weight): P. 710
Total load capacity means the combined weight of occupants, cargo and lug-
gage.
◆Seating capacity
RX450h
5 occupants (Front 2, Rear 3)
RX450hL
6 occupants (Front 2, Rear 4)
Seating capacity means the maximum number of occupants whose estimated
average weight is 150 lb. (68 kg) per person.
◆TWR (Trailer Weight Rating) (Vehicles with towing package):
 P. 227, 710
TWR means the maximum gross trailer we ight (trailer weight plus its cargo
weight) that your vehicle is able to tow.
◆TWR (Trailer Weight Rating) (V ehicles without towing package)
Lexus does not recommend towing a trailer with your vehicle.
◆Cargo capacity
Cargo capacity may increase or decrease depending on the weight and the
number of occupants.
■Total load capacity and seating capacity
These details are also described on the tire and loading information label. (P. 620)
Vehicle load limits
Vehicle load limits include total load capacity, seating capacity, trailer weight
rating and cargo capacity.
WARNING
■Overloading the vehicle
Do not overload the vehicle.
It may not only cause damage to the tires, but also degrade steering and braking ability,
resulting in an accident.

2244-1. Before driving
RX450h_RX450hL_U
Contact your Lexus dealer for further in formation about additional requirements
such as a towing kit, etc.
Trailer towing (vehicles with towing package)
Your vehicle is designed primarily as a passenger-and-load-carrying vehicle.
Towing a trailer can have an adverse im pact on handling, performance, brak-
ing, durability, and fuel consumption. Fo r your safety and the safety of others,
you must not overload your vehicle or trailer. You must also ensure that you
are using appropriate towing equipment, that the towing equipment has been
installed correctly and used properly, and that you employ the requisite driv-
ing habits.
Vehicle-trailer stability and braking pe rformance are affected by trailer sta-
bility, brake performance and setting, tr ailer brakes, the hitch and hitch sys-
tems (if equipped).
To tow a trailer safely, use extreme ca re and drive the vehicle in accordance
with your trailer’s characteri stics and operating conditions.
Lexus warranties do not apply to damage or malfunction caused by towing a
trailer for commercial purposes.

2254-1. Before driving
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Driving
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■GCWR (Gross Combination Weight Rating)
The maximum allowable gross com-
bination weight. The gross combina-
tion weight is the sum of the total
vehicle weight (including the occu-
pants, cargo and any optional equip-
ment installed on the vehicle) and
the weight of the trailer being towed
(including the cargo in the trailer).
■GVWR (Gross Vehicle Weight Rating)
The maximum allowable gross vehi-
cle weight. The gross vehicle weight
is the total weight of the vehicle.
When towing a trailer, it is the sum of
the vehicle weight (including the
occupants, cargo and any optional
equipment installed on the vehicle)
and the tongue weight.
■GAWR (Gross Axle Weight Rating)
The maximum allowable gross axle
weight. The gross axle weight is the
load placed on each axle (front and
rear).
Towing related terms
Front GAWR
Rear GAWR

2264-1. Before driving
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■TWR (Trailer Weight Rating)
The maximum allowable gross trailer
weight. The gross trailer weight is
the sum of the trailer weight and the
weight of the cargo in the trailer.
TWR is calculated assuming base
vehicle with one driver, one front
passenger, towing package (if avail-
able), hitch and hitch systems (if
required).
Additional optional equipment, passengers and cargo in the vehicle will reduce the
trailer weight rating so as not to exceed GCWR, GVWR and GAWR.
If the gross trailer weight exceeds 3000 lb. (1360 kg), it is recommended to use a
trailer with 2 or more axles.
■Unbraked TWR (Unbraked Trailer Weight Rating)
The trailer weight rating for towing a
trailer without a trailer service brake
system.
■Tongue Weight
The load placed on the trailer hitch
ball. ( P. 228)
(With brakes)
(Without brakes)

2274-1. Before driving
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Driving
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●The gross trailer weight must never exceed 3500 lb. (1585 kg).
●The gross combination weight must never exceed 9500 lb. (4309 kg).
●The gross vehicle weight must never
exceed the GVWR indicated on the
Certification Label.
●The gross axle weight on each axle
must never exceed the GAWR indi-
cated on the Certification Label.
●If the gross trailer weight is over the unbraked TWR, trailer service brakes are
required.
●If the gross trailer weight is over 2000 lb. (907 kg), a sway control device with
sufficient capacity is required.
Confirm that the gross trailer weight, gross combination weight, gross vehicle
weight, gross axle weight and tongue weight are all within the limits.
■GCWR*
9500 lb. (4309 kg)
■TWR*
3500 lb. (1585 kg)
■Unbraked TWR*
1000 lb. (453 kg)
*: These models meet the tow-vehicle trailering requirement of SAE International per
SAE J2807.
Weight limits
GCWR, TWR and Unbraked TWR

2284-1. Before driving
RX450h_RX450hL_U
●A recommended tongue weight varies in accordance with the types of trailers
or towing as described below.
●To ensure the recommended values show n below, the trailer must be loaded
by referring to the following instructions. • Tongue Weight
The gross trailer weight should be dist ributed so that the tongue weight is
9% to 11%.
(Tongue weight/Gross trailer weight x 100 = 9% to 11%)
Gross trailer weight
Tongue weight
The gross trailer weight, gross axle weight and tongue weight can be mea-
sured with platform scales found at a highway weighing station, building
supply company, trucking company, junk yard, etc.
Trailer hitch assemblies have different weight capacities. Lexus recommends the
use of Lexus hitch/bracket for your ve hicle. For details, contact your Lexus
dealer.
●If you wish to install a trailer hitch, contact your Lexus dealer.
●Use only a hitch that conforms to the gross trailer weight requirement of your
vehicle.
●Follow the directions supplied by the hitch manufacturer.
●Lubricate the hitch ball with a light coating of grease.
●Remove the trailer hitch whenever you ar e not towing a trailer. After removing
the hitch, seal any mounting hole in the vehicle body to prevent entry of any
substances into the vehicle.
Trailer Tongue Weight
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Hitch