trailer LEXUS RX450h 2015 Owner's Manual

3182-5. Driving information
● Always place wheel bloc ks under both the vehi cle’s and the trailer’s
wheels when parking. Apply the pa rking brake firmly, and put the
transmission in P. Avoid parking on a slope, but if unavoidable, do so
only after performing the following:
Apply the brakes and keep them applied.
Have someone place wheel blocks under both the vehicle’s and
trailer’s wheels.
When the wheel blocks are in pl ace, release the brakes slowly
until the blocks absorb the load.
Apply the parking brake firmly.
Shift into P and turn off the hybrid system.
● When restarting after parking on a slope:
With the transmission in P, start the hybrid system. Be sure to
keep the brake pedal depressed.
Shift into a forward gear. If reversing, shift into R.
Release the parking brake and br ake pedal, and slowly pull or
back away from the wheel blocks. Stop and apply the brakes.
Have someone retrieve the blocks.STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 1
STEP 2
STEP 3
STEP 4

3192-5. Driving information
2
When driving ■
Matching trailer ball height to trailer coupler height
■
Before towing
Check that the following conditions are met: ●
Ensure that your vehicle’s ti res are properly inflated. (  P. 8 0 7 )●
Trailer tires are inflated according to the trailer manufacturer’s recommenda-
tion.●
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 tongue weight,
overloading, 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
regulations. If they do not, install rear view mirrors appropriate for towing pur-
poses. 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 cou-
pler on the trailer.
Coupler
Trailer ball

3202-5. Driving information
■
Break-in schedule
If your vehicle is new or equipped with any new power train components (such as
an engine, transmission, differential or wheel bearing), Lexus recommends that you
do not tow a trailer until the vehicle has been driven for over 500 miles (800 km).
After the vehicle has been driven for over 500 miles (800 km), you can start tow-
ing. However, for the next 500 miles (800 km), drive the vehicle at a speed of less
than 50 mph (80 km/h) when towing a trailer, and avoid full throttle acceleration.■
Maintenance ●
If you tow a trailer, your vehicle will require more frequent maintenance due to
the additional load. (See “Warranty and Services Guide”, “Owner's Manual
Supplement” or “Scheduled Maintenance”.)●
Retighten the fixing bolts of the towing ball and bracket after approximately
600 miles (1000 km) of trailer towing.■
If trailer sway occurs
One or more factors (crosswinds, passing vehicles, rough roads, etc.) can adversely
affect handling of your vehicle and trailer, causing instability. ●
If trailer swaying occurs:
• Firmly grip the steering wheel. Steer straight ahead.
Do not try to control trailer sway ing by turning the steering wheel.
• Begin releasing the accelerator peda l immediately but very gradually to
reduce speed.
Do not increase speed. Do not apply vehicle brakes.
If you make no extreme correction with the steering or brakes, your vehicle and
trailer should stabilize. ●
After the trailer swaying has stopped:
• Stop in a safe place. Get all occupants out of the vehicle.
• Check the tires of the vehicle and the trailer.
• Check the load in the trailer.
Make sure the load has not shifted.
Make sure the tongue weight is appropriate, if possible.
• Check the load in the vehicle.
Make sure the vehicle is not ov erloaded after occupants get in.
If you cannot find any problems, the speed at which trailer swaying occurred is
beyond the limit of your particular vehicle-trailer combination.
Drive at a lower speed to prevent instability. Remember that swaying of the towing
vehicle-trailer increases as speed increases.

3212-5. Driving information
2
When driving CAUTION■
Trailer towing precautions
To tow a trailer safely, use extreme care an d drive the vehicle in accordance with the
trailer’s characteristics and operating conditions. Failure to do so could cause an
accident resulting in death or serious injury. Vehicle stability and braking perfor-
mance are affected by trailer stability, brake setting and 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
sufficient capacity is required.●
Adjust the tongue weight within the appropriate 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 trailer owner’s manual, whichever is lowest.
Slow down sufficiently before making a turn, in cross winds, on wet or slippery
surface, etc. to help avoid an accident. If you experience a vehicle-trailer instabil-
ity from reducing a certain speed, slow down and make sure you keep your vehi-
cle speed under the speed of which you experience the instability.●
Do not make jerky, abrupt or sharp turns.●
Do not apply the brakes suddenly as you may 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 cruise control when towing.●
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 descend-
ing steep or long downhill grades, slow down and downshift. Do not make sudden
downshifts when descending steep or lo ng downhill grades. Avoid holding 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 spare tire is installed on your vehicle.

3222-5. Driving information
CAUTION■
Hitch
Trailer hitch assemblies have different weight capacities established by the hitch
manufacturer. Even though the vehicle may be physically capable of towing a
higher weight, the operator must determin e the maximum weight rating of the par-
ticular hitch assembly and never exceed the maximum weight rating specified for
the trailer-hitch. Exceeding the maximum weight rating se t by the trailer-hitch man-
ufacturer 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/provincial regulations.●
Never tap into your vehicle’s hydraulic system, as this will lower the vehicle’s brak-
ing effectiveness.●
Never tow a trailer without using a safety chain securely attached to both the
trailer and the vehicle. If damage occurs to the coupling unit or hitch ball, there is
danger of the trailer wand ering 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 splice trailer lights. Direct ly splicing trailer li ghts may damage your
vehicle’s electrical system and cause a malfunction.

3232-5. Driving information
2
When driving Trailer towing (without towing package) Lexus does not recommend towing a trailer with your vehicle. Lexus also
does not recommend the installation of a tow hitch or the use of a tow hitch
carrier for a wheelchair, scooter, bicycl e, etc. Your vehicle is not designed
for trailer towing or for the us e of tow hitch mounted carriers.

6984-3. Do-it-yourself maintenance
35
ECU-IG1 NO. 4 10 A Air conditioning system, rear window
defogger, electronically controlled
brake system, electric cooling fans36
BK/UP LP 7. 5 A Back-up lights37
ECU-IG1 NO. 5 15 A Air conditioning system38
ECU-IG1 NO. 6 10 A Head light cleaner, cruise control, air
conditioning system, Blind Spot Moni-
tor39
EFI NO. 2 10 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem40
F/ P M P 15 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem41
DEICER 25 A Windshield wipers and washer
42
STOP 7. 5 A Vehicle Proximity Notification System,
vehicle dynamics integrated manage-
ment, stop lights, multiport fuel injec-
tion system/sequential multiport fuel
injection system, shift lock control sys-
tem, starter system, cruise control43
TOW I N G BAT T 20 A44
TOW I N G 30 A Trailer lights45
FILTER 10 A
46
IG1 MAIN 30 A ECU-IG1 NO. 6, BK/UP LP, ECU-
IG1 NO. 5, ECU-IG1 NO. 4
47
H-LP RH HI 15 A Right-hand headlight (high beam)
48
H-LP LH HI 15 A Left-hand headlight (high beam)Fuse Ampere Circuit

7986-1. Specifications
Maintenance data (fue l, oil level, etc.)Dimensions and weight
* 1
: Unladen vehicles
* 2
: Vehicles without roof antenna and roof rails
* 3
: Vehicles with roof antenna but without roof rails
* 4
: Vehicles with roof rails
* 5
: AWD models with towing package onlyOverall length 187.8 in. (4770 mm)
Overall width 74.2 in. (1885 mm)
Overall height
* 1
66.3 in. (1685 mm)
* 2
66.7 in. (1695 mm)
* 3
67.9 in. (1725 mm)
* 4
Wheelbase 107.9 in. (2740 mm)
Tr e a d Front 64.2 in. (1630 mm)
Rear 64.0 in. (1625 mm)
Vehicle capacity weight
(Occupants + luggage) 2WD
825 lb. (370 kg)
AW D
885 lb. (400 kg)
Trailer Weight Rating
(trailer weight + cargo weight)
* 5
3500 lb. (1588 kg)

859Abbreviation list
PCS Pre-Collision System
PWR Po w e r
RF Radio Frequency
SRS Supplemental Restraint System
TIN Tire Identification Number
TPMS Tire Pressure Warning System
TRAC Traction Control
TWR Trailer Weight Rating
VDIM Vehicle Dynamics Integrated Management
VIN Vehicle Identification Number
VSC Vehicle Stability ControlABBREVIATIONS MEANING

871Alphabetical index
Tachometer .............................................. 197
Tail lights
Replacing light bulbs ....................... 708
Switch ........................................................ 217
Wattage ................................................ 809
Talk switch*.................................. 429, 553
Telephone* .................................. 429, 552
Telephone switch* .................... 429, 553
Theft deterrent system
Alarm ......................................................... 126
Immobilizer system ............................ 124
Theft prevention labels ........................ 129
Tire inflation pressure..........................679
Tire information
Glossary ..................................................819
Size ............................................................ 815
Tire identification number .............. 815
Uniform tire quality grading........... 817
Tires
Chains ..................................................... 302
Checking ............................................... 670
If you have a flat tire.......................... 764
Inflation pressure ............................... 679
Inflation pressure sensor.................. 671
Information..............................................813
Replacing............................................... 764
Rotating tires ........................................ 670
Size ........................................................... 807
Snow tires.............................................. 302
Spare tire ............................................... 764
Tire pressure warning
system...................................... 670, 736 Tools ........................................................... 764
Total load capacity ................................ 301
Towing
Dinghy towing ..................................... 324
Emergency towing............................ 725
Trailer towing ...................................... 306
TRAC...........................................................271
Traction control .......................................271
Trailer towing ............................. 306, 323
Trip information display......................206
Trip meter ..................................................197
Turn signal lights
Replacing light bulbs ....................... 708
Switch........................................................ 193
Wattage ................................................. 809T
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.