trailer LEXUS RX450h 2015 Owners Manual

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31-8. Safety information
Correct driving posture ............. 130
SRS airbags ..................................... 132
Front passenger occupant
classification sy stem .................. 145
Child restraint systems ............... 150
Installing child re straints ............. 154
2-1. Driving procedures
Driving the vehicle ........................ 166
Power (ignition) switch ................ 177
EV drive mode ............................... 183
Hybrid transmission ..................... 186
Turn signal lever ............................ 193
Parking brake ................................. 195
Horn.................................................... 196
2-2. Instrument cluster
Gauges and meters ..................... 197
Indicators and warning
lights................................................. 201
Multi-information display.......... 206
Head-up display ............................ 212
2-3. Operating the lights and
windshield wipers
Headlight switch ............................. 217
Fog light switch .............................. 221
Windshield wipers and
washer............................................ 223 Rear window wiper and
washer ........................................... 229
Headlight cleaner switch ........... 231
2-4. Using other driving systems
Cruise control ............................... 232
Dynamic radar cruise
control............................................ 236
Intuitive parking assist ................ 248
Rear view monitor system
(rear view mirror-attached
type) ............................................... 258
Rear view monitor system
(vehicles with the Lexus
Display Audio system) ............ 266
Driving assist systems................... 271
Hill-start assist control ............... 276
Pre-Collision System.................. 278
BSM (Blind Spot Monitor) ....... 286
2-5. Driving information
Utility vehicle pre cautions ........ 292
Cargo and luggage ..................... 296
Vehicle load limits ......................... 301
Winter driving tips ....................... 302
Trailer towing (AWD models
with towing package) ............. 306
Trailer towing
(without towing package)...... 323
Dinghy towing ............................... 3242
When driving

When driving
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1652-1. Driving procedures
Driving the vehicle.................. 166
Power (ignition) switch .......... 177
EV drive mode.......................... 183
Hybrid transmission ............... 186
Turn signal lever ....................... 193
Parking brake ........................... 195
Horn ............................................ 196
2-2. Instrument cluster
Gauges and meters ................ 197
Indicators and warning
lights ......................................... 201
Multi-information display .... 206
Head-up display ...................... 212
2-3. Operating the lights and
windshield wipers
Headlight switch...................... 217
Fog light switch ........................ 221
Windshield wipers and
washer ................................... 223
Rear window wiper and
washer .................................... 229
Headlight cleaner switch...... 231 2-4. Using other driving
systems
Cruise control......................... 232
Dynamic radar cruise
control .................................... 236
Intuitive parking assist .......... 248
Rear view monitor system
(rear view mirror-attached
type) ........................................ 258
Rear view monitor system
(vehicles with the Lexus
Display Audio system) ....... 266
Driving assist systems ............. 271
Hill-start assist control .......... 276
Pre-Collision System ............ 278
BSM
(Blind Spot Monitor) .......... 286
2-5. Driving information
Utility vehicle
precautions ........................... 292
Cargo and luggage ............... 296
Vehicle load limits ................... 301
Winter driving tips ................. 302
Tr a i l e r t o w i n g ( AW D m o d e l s
with towing package)......... 306
Trailer towing (without
towing package).................. 323
Dinghy towing ......................... 324

1672-1. Driving procedures
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When driving ■
When starting off on an uphill
The hill-start assist control is available. (  P. 2 76 )■
Driving in the rain ●
Drive carefully when it is raining, becaus e visibility will be reduced, the windows
may become fogged-up, and the road will be slippery.●
Drive carefully when it starts to rain, be cause the road surface will be especially
slippery.●
Refrain from high speeds when driving on an expressway in the rain, because
there may be a layer of water between th e tires and the road surface, preventing
the steering and brakes from operating properly.■
Engine speed while driving
In the following conditions, the engine speed may become high while driving. This is
due to automatic up-shifting control or down-shifting implementation to meet driv-
ing conditions. It does not indicate sudden acceleration.●
The vehicle is judged to be driving uphill or downhill●
When the accelerator pedal is released●
When the brake pedal is depresse d while sport mode is selected■
Breaking in your new Lexus
To extend the life of the vehicle, observing the following precautions is recom-
mended: ●
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.

2352-4. Using other driving systems
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When driving ■
If a warning message is shown on the multi-information display
Press the “ON-OFF” button once to deactiv ate the system, and then press the but-
ton again to reactivate the system.
If the cruise control speed cannot be set or if the cruise control cancels immediately
after being activated, there may be a malfun ction in the cruise control system. Have
the vehicle inspected by your Lexus dealer.
CAUTION■
To avoid operating the cruise control by mistake
Switch the cruise control off using the “ON-OFF” button when not in use.■
Situations unsuitable for cruise control
Do not use cruise control in any of the following situations.
Doing so may result in loss of control and could cause an accident resulting in death
or serious injury. ●
In heavy traffic●
On roads with sharp bends●
On winding roads●
On slippery roads, such as thos e covered with rain, ice or snow●
On steep hills
Vehicle speed may exceed the set speed when driving down a steep hill.●
When your vehicle is towing a trailer or during emergency towing

2462-4. Using other driving systems
CAUTION■
Situations unsuitable for dynamic radar cruise control
Do not use dynamic radar cruise contro l in any of the following situations.
Doing so may result in inappropriate sp eed control and could cause an accident
resulting in death or serious injury. ●
In heavy traffic●
On roads with sharp bends●
On winding roads●
On slippery roads, such as thos e covered with rain, ice or snow●
On steep downhills, or where there are sudden changes between sharp up and
down gradients
Vehicle speed may exceed the set speed when driving down a steep hill.●
At entrances to expressways●
When weather conditions are bad enough that they may prevent the sensors
from functioning correctly (fog, sn ow, sandstorm, heavy rain, etc.)●
When an approach warning buzzer is heard often●
When your vehicle is towing a trailer or during emergency towing■
When the sensor may not be correctly detecting the vehicle ahead
Apply the brakes as necessary when any of the following types of vehicles are in
front of you.
As the sensor may not be able to correctly detect these types of vehicles, the
approach warning (  P. 241) will not be activated, and a fatal or serious accident
may result. ●
Vehicles that cut in suddenly●
Vehicles traveling at low speeds●
Vehicles that are not moving
●
Vehicles with small rear ends (tra ilers with no load on board etc.)
●
Motorcycles traveling in the same lane

2882-4. Using other driving systems
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Conditions under which the Blind Spot Monitor will not detect a vehicle
The Blind Spot Monitor is not designed to detect the following types of vehicles
and/or objects: ●
Vehicles traveling from the opposite direction●
Small motorcycles, bicycles, pedestrians etc.*●
Guardrails, walls, signs, parked vehicles and similar stationary objects*●
Following vehicles that are in the same lane*●
Vehicles driving 2 lanes across from your vehicle*
*: Depending on conditions, detection of a vehicle and/or object may occur ■
Conditions under which the Blind Spot Monitor may not function correctly ●
The Blind Spot Monitor may not detect vehicles correctly in the following condi-
tions:
• During bad weather such as heavy rain, fog, snow etc.
• When ice, mud etc. is attached to the rear bumper
• When driving on a road surface that is wet due to rain, standing water etc.
• When there is a significant difference in speed between your vehicle and the
vehicle that enters the detection area
• When a vehicle is in the detection area from a stop and remains in the detec-
tion area as your vehicle accelerates
• When driving up or down consecutive steep inclines, such as hills, a dip in the
road etc.
• When multiple vehicles approach with only a small gap between each vehicle
• When vehicle lanes are wide, and the vehicle in the next lane is too far away
from your vehicle
• When the vehicle that enters the detect ion area is traveling at about the same
speed as your vehicle
• When there is a significant difference in height between your vehicle and the
vehicle that enters the detection area.
• Directly after the BSM switch is set to on.
• When towing a trailer
• When items such as a bicycle carrier are installed on the rear of the vehicle

2972-5. Driving information
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When driving (6)If your vehicle will be towing a trailer, load from your trailer will be
transferred to your vehicle. Consul t this manual to determine how this
reduces the available cargo and luggage load capacity of your vehi-
cle.
(  P. 7 9 8 )
Calculation formula for your vehicle
Cargo capacity
Total load capacity (vehicle
capacity weight) (  P. 7 9 8 )
When 2 people with the combined weight of A lb. (kg) are riding in your
vehicle, which has a total load capacity (vehicle ca pacity weight) of B lb.
(kg), the available amount of cargo an d luggage load capacity will be C
lb. (kg) as follows:
B* 2
lb. (kg) - A* 1
lb. (kg) = C* 3
lb. (kg)
* 1
: A =Weight of people
* 2
: B =Total load capacity
* 3
: C =Available cargo and luggage load
In this condition, if 3 more passengers with the combined weight of D lb. (kg)
get on, the available cargo and luggage lo ad will be reduced E lb. (kg) as fol-
lows:
C lb. (kg) - D* 4
lb. (kg) = E* 5
lb. (kg)
* 4
: D =Additional weight of people
* 5
: E =Available cargo and luggage load

3012-5. Driving information
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When driving Vehicle load limits
■
Total load capacity and seating capacity
These details are also described on th e tire and loading information label.
(  P. 6 7 9 )
CAUTION
■
Overloading the vehicle
Do not overload the vehicle.
It may not only cause damage to the tire s, but also degrade steering and braking
ability, resulting in an accident. Vehicle load limits include total load capacity, seating capacity, TWR
(Trailer Weight Rating) and cargo capacity.
■ Total load capacity (vehicle capacity weight): (  P. 7 9 8 )Total load capacity means the combined weight of occupants, cargo and
luggage.
■ Seating capacity: 5 occupants (Front 2, Rear 3) Seating capacity means the maximum number of occupants whose esti-
mated average weight is 150 lb. (68 kg) per person.
■ TWR (Trailer Weight Rating) (AWD models with towing package):
(  P. 310, 798)TWR means the maximum gross trailer weight (trailer weight plus its
cargo weight) that your vehicle is able to tow.
■ TWR (Trailer Weight Rating) (2WD models and AWD models
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.

3062-5. Driving information
Trailer towing (AWD models with towing package)
Towing related terms
■ GCWR (Gross Combination Weight Rating)
The maximum allowable gross
combination weight. The gross
combination weight is the sum of
the total vehicle weight (including
the occupants, cargo and any
optional equipment installed on
the vehicle) and the weight of the
trailer being towed (including the
cargo in the trailer).Your vehicle is designed primarily as a passenger-and-load-carrying vehi-
cle. Towing a trailer can have an adverse impact on handling, performance,
braking, durability, and fuel consumpt ion. For 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 equip-
ment has been installed correctly and used properly, and that you employ
the requisite driving habits.
Vehicle-trailer stability and braking performance are affected by trailer
stability, brake performance and settin g, trailer brakes, the hitch and hitch
systems (if equipped).
To tow a trailer safely, use extreme care and drive the vehicle in accor-
dance with your trailer’s characteristics and operating conditions.
Lexus warranties do not apply to damage or malfunction caused by towing
a trailer for commercial purposes.
Contact your Lexus dealer for furt her information about additional
requirements such as towing kits, etc.

3072-5. Driving information
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When driving ■ GVWR (Gross Vehicle Weight Rating)
The maximum allowable gross
vehicle 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).Front GAWR
Rear GAWR