2018 LEXUS RX450h towing capacity

220 4-1. Before driving
RX450h_RX450hL _U_OM48F85UCargo 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 tra iler 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
4
Driving
RX450h_RX450hL _U_OM48F85U◆ 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.

2354-1. Before driving
4
Driving
RX450h_RX450hL _U_OM48F85UWARNING ■
Trailer towing precautions
To tow a trailer safely, use extreme care and drive the vehicle in accordance with the
trailer’s characteristics and operating conditio ns. Failure to do so could cause an acci-
dent resulting in deat h or serious injury. Vehicle stab ility and braking performance are
affected by trailer stability, brake setting an d performance, and the hitch. Your vehicle
will handle differently when towing a trailer. ■
To avoid accident or injury ●
Do not exceed the TWR, unbraked TWR, GCWR, GVWR or GAWR. ●
If the gross trailer weight is over 2000 lb. (907 kg), a sway control device with suffi-
cient capacity is required. ●
Adjust the tongue weight within the approp riate range. Place heavier loads as close
to the trailer axle as possible. ●
Do not exceed 65 mph (104 km/h), the posted towing speed limit or the speed limit
for your trailer as set forth in your trai ler owner’s manual, whichever is lowest. Slow
down sufficiently before making a turn, in cr oss winds, on wet or slippery surface, etc.
to help avoid an accident. If you experien ce a vehicle-trailer in stability from reducing
a certain speed, slow down and make sure you keep your vehicle speed under the
speed of which you expe rience the instability.●
Do not make jerky, abrupt or sharp turns. ●
Do not apply the brakes suddenly as you ma y skid, resulting in jackknifing and loss of
vehicle control. This is especially true on wet or slippery surfaces.●
Do not exceed the trailer hitch assembly weight, gross vehicle weight, gross axle
weight and trailer tongue weight capacities. ●
Do not use the following systems when trailer towing.
• Dynamic radar cruise cont rol with full-speed range
• LKA (Lane-Keeping Assist)
• PCS (Pre-Collision system)
• BSM (Blind Spot Monitor)
*
* : If equipped ●
Slow down and downshift before descending steep or long downhill grades. Do not
make sudden downshifts while descending steep or long downhill grades. ●
Vehicle-trailer instability is more likely on steep long downhills. Before descending
steep or long downhill grades, slow down and downshift. Do not make sudden down-
shifts when descending steep or long do wnhill grades. Avoid ho lding the brake pedal
down too long or applying the brakes too frequently. This could cause the brakes to
overheat and result in reduced braking efficiency. ●
Do not tow a trailer when the compact sp are tire is installed on your vehicle.

710
RX450h_RX450hL _U_OM48F85U9-1. Specifications
* 1
:Unladen vehicle
* 2
: Vehicles with towing package
* 3
:RX450h
* 4
:RX450hLMaintenance data (fuel, oil level, etc.) Dimensions and weight Overall length 192.5 in. (4890 mm)
* 3
196.9 in. (5000 mm)
* 4
Overall width 74.6 in. (1895 mm)
Overall height
* 1
67.7 in. (1720 mm)
Wheelbase 109.8 in. (2790 mm)
Tread Front 64.4 in. (1635 mm)
* 3
64.5 in. (1640 mm)
* 4
Rear 64.0 in. (1625 mm)
* 3
64.1 in. (1630 mm)
* 4
Vehicle capacity weight
(Occupants + luggage) 920 lb. (420 kg)
* 3
1070 lb. (490 kg)
* 4
Trailer Weight Rating
* 2
(Trailer weight + cargo we ight) 3500 lb. (1585 kg)
* 3

7139-1. Specifications
9
Vehicle specifications
RX450h_RX450hL _U_OM48F85U* : The engine oil capacity is a reference quantity to be used when changing the engine
oil. Warm up the engine and turn off the hybrid system, wait more than 5 minutes, and
check the oil level on the dipstick.Hybrid battery (traction battery) Type Nickel-Metal hydride battery
Voltage 9.6 V/module
Capacity 6.5 Ah (3HR)
Quantity 30 modules
Overall voltage 288 V
Lubrication system Oil capacity
(Drain and refill — reference
* )
With filter 
Vehicles with towing package
5.8 qt. (5.5 L, 4.8 Imp. qt.) 
Vehicles without towing package
5.7 qt. (5.4 L, 4.8 Imp. qt.)
Without filter 5.6 qt. (5.3 L, 4.7 Imp. qt.)

774 Alphabetical index
RX450h_RX450hL _U_OM48F85UChild-protectors.....................................139
Cleaning.......................................580, 584
Aluminum wheels ............................... 581
Exterior................................................... 580
Interior .................................................... 584
Seat belts ............................................... 585
Clock ................................................ 96, 548
Coat hooks.............................................. 559
Compass .................................................. 567
Condenser .............................................. 602
Console box ........................................... 534
Consumption screen ................. 105, 124
Coolant
Capacity .................................................. 715
Checking................................................. 601
Preparing and checking
before winter ................................... 390
Cooling system ...................................... 601
Hybrid system overheating ..........702
Cornering lights .................................... 259
Cruise control
Dynamic radar cruise control
with full-speed range ................... 306
Cup holders ............................................ 535
Curtain shield airbags ........................... 37
Customizable features ....................... 736
Customized mode ............................... 379 Daytime running light system.......... 260
Defogger
Outside rear view mirrors ..............516
Rear window..........................................516
Windshield..............................................516
Differential ................................................ 716
Dimensions ............................................... 710
Dinghy towing ....................................... 238
Display
Dynamic radar cruise control
with full-speed range ...................306
Energy monitor..................................... 124
LKA (Lane-Keeping Assist)......... 302
Multi-information display.................. 101
Warning messages .......................... 667
Do-it-yourself maintenance............. 593
Doors
Automatic door locking and
unlocking system..............................139
Door lock................................................ 138
Outside rear view mirrors ..............193
Power back door ................................ 142
Rear door child-p rotectors ............139
Side doors ...............................................136
Side windows ........................................196 D

788 Alphabetical index
RX450h_RX450hL _U_OM48F85UTachometer ............................................... 96
Tail lights
Light switch .......................................... 258
Replacing light bulbs ........................637
Talk switch ..................................... 471, 493
Telephone switch.................................... 471
Theft deterrent system
Alarm...........................................................86
Immobilizer system ..............................83
Tire inflation pressure
Maintenance data ................................ 717
Warning light .......................................662
Tire information ..................................... 723
Glossary .................................................730
Size ............................................................ 726
Tire identification number.............. 725
Uniform Tire Quality
Grading...............................................728
Tire pressure warning system
Initializing................................................. 612
Installing tire pressure warning
valves and transmitters ................. 612
Registering ID codes ........................ 613
Warning light .......................................662 Tires .............................................................. 611
Chains .......................................................391
Checking .................................................. 611
Glossary................................................. 730
If you have a flat tire .......................... 673
Inflation pressure...................... 620, 717
Replacing ............................................... 673
Rotating tires ........................................... 611
Size ............................................................. 717
Snow tires .............................................. 392
Spare tire...................................... 673, 717
Tire identification number ............. 725
Tire pressure warning system ....... 612
Uniform Tire Quality Grading.... 728
Warning light ....................................... 662
Tools ........................................................... 674
Top tether strap ........................................70
Total load capacity................................. 710
Touchless power back door .............. 144
Towing
Dinghy towing ..................................... 238
Emergency towing ........................... 654
Towing eyelet ......................................656
Trailer Sway Control ....................... 382
Trailer towing............................ 224, 237T