trailer LEXUS GS300H 2019 Owners Manual

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GS450h_300h_OM_OM30F92E_(EE)
3-5. Opening, closing the
windows and moon roof
Power windows............................ 193
Moon roof ...................................... 196
4-1. Before driving
Driving the vehicle .................... 200
Cargo and luggage .................. 208
Trailer towing (vehicles
without towing package) .....209
Trailer towing (vehicles with
towing package)....................... 210
4-2. Driving procedures
Power (ignition) switch ..............217
EV drive mode ............................ 222
Hybrid transmission .................. 224
Turn signal lever .......................... 231
Parking brake ..............................232
Brake Hold....................................235
4-3. Operating the lights
and wipers
Headlight switch ......................... 237
AHS (Adaptive High-beam
System)......................................... 241
Automatic High Beam ............. 246
Fog light switch .......................... 250
Windshield wipers
and washer.................................. 251
4-4. Refueling
Opening the fuel tank cap...... 257
4-5. Using the driving support
systems
Lexus Safety System+ ............... 261
PCS (Pre-Crash Safety
system)......................................... 270
LKA (Lane-Keeping
Assist)...........................................282
RSA (Road Sign Assist)............ 291
Dynamic radar cruise
control with full-speed
range ............................................ 296
Cruise control ............................ 308
Driving mode select switch.......311
BSM (Blind Spot Monitor) ...... 314
•The Blind Spot Monitor
function...................................... 319
• The Rear Crossing Traffic
Alert function .......................... 321
Driving assist systems...............324
4-6. Driving tips
Hybrid vehicle driving tips....... 331
Winter driving tips .....................334
4Driving

951-3. Theft deterrent system
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GS450h_300h_OM_OM30F92E_(EE)
For safety and security
■Canceling and automatic re-enabling of the intrusion sensor and tilt sensor
●The alarm will still be set even when the intrusion sensor and tilt sensor are canceled.
●After the intrusion sensor and tilt sensor are canceled, pressing the power switch or unlocking the doors using the entry function, wireless remote control or mechanical
key will re-enable the intrusio n sensor and tilt sensor.
●The intrusion sensor and tilt sensor will automatically be re-enabled when the alarm system is deactivated.
■Intrusion sensor detection considerations (if equipped)
The sensor may trigger the alarm in the following situations:
• The movement of people outside the vehicle
●Places with extreme vibrations or noises, or situations in which the vehicle is subject to
repeated impacts or vibrations:
• When parked in a parking garage • When the vehicle is transported by a ferry, trailer, train, etc.
• When ice adhering to the vehicle is removed • When the vehicle is in an automatic or high-pressure car wash• When in a hail or lightning storm
●A window or the moon roof (if equipped) isopen. In this case, the sensor may detect the follow-
ing:
• Wind or the movement of objects such as leaves and insects inside the vehicle
• Ultrasonic waves emitted from devices such as the intrusion sensors of other vehi-cles
●Unstable items, such as dangling accessoriesor clothes hanging on the coat hooks, are inthe vehicle.

961-3. Theft deterrent system
GS450h_300h_OM_OM30F92E_(EE)
■Tilt sensor detection considerations (if equipped)
The sensor may trigger the alarm in the following situations:
●The vehicle is transported by a ferry, trailer, train, etc.
●The vehicle is parked in a parking garage.
●The vehicle is inside a car wash that moves the vehicle.
●Any of the tires loses air pressure.
●The vehicle is jacked up.
●An earthquake occurs or the road caves in.
NOTICE
■To ensure the intrusion sensor function correctly
●Installing accessories other than genuine Lexus parts or leaving objects between the
driver’s seat and front passenger’s seat may reduce the detection performance.
●To ensure that the sensors operate properly, do not touch or cover them.
●Do not spray air freshe ners or other products directly into the sensor holes.

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4Driving
GS450h_300h_OM_OM30F92E_(EE)
4-1. Before driving
Driving the vehicle.................... 200
Cargo and luggage .................. 208
Trailer towing (vehicles
without towing package) .....209
Trailer towing (vehicles with
towing package)....................... 210
4-2. Driving procedures
Power (ignition) switch ..............217
EV drive mode ............................ 222
Hybrid transmission .................. 224
Turn signal lever .......................... 231
Parking brake .............................. 232
Brake Hold....................................235
4-3. Operating the lights
and wipers
Headlight switch ......................... 237
AHS (Adaptive High-beam
System)......................................... 241
Automatic High Beam ............. 246
Fog light switch .......................... 250
Windshield wipers
and washer.................................. 251
4-4. Refueling
Opening the fuel tank cap ..... 257
4-5. Using the driving support
systems
Lexus Safety System+ ................261
PCS (Pre-Crash Safety
system) ........................................ 270
LKA (Lane-Keeping
Assist) .......................................... 282
RSA (Road Sign Assist) ............291
Dynamic radar cruise
control with full-speed
range ............................................ 296
Cruise control ............................ 308
Driving mode select switch ...... 311
BSM (Blind Spot Monitor) ...... 314
•The Blind Spot Monitor
function ..................................... 319
• The Rear Crossing Traffic
Alert function...........................321
Driving assist systems .............. 324
4-6. Driving tips
Hybrid vehicle driving tips ...... 331
Winter driving tips ..................... 334

2024-1. Before driving
GS450h_300h_OM_OM30F92E_(EE)
■Breaking in your new Lexus
To extend the life of the vehicle, observing the following precautions is recommended:
●For the first 300 km (186 miles):
Avoid sudden stops.
●For the first 800 km (500 miles): Do not tow a trailer.
●For the first 1000 km (621 miles):
• 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.
■Drum-in-disc type parking brake system
Your vehicle has a drum-in-disc type parkin g brake system. This type of brake system needs bedding-down of the brake shoes periodically or whenever the parking brakeshoes and/or drum are replaced. Have any au thorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer perform the bedding down operation.
■Operating your vehicle in a foreign country
Comply with the relevant vehicle registration laws and confirm the availability of the cor-
rect fuel. ( P. 549)

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4-1. Before driving
Driving
GS450h_300h_OM_OM30F92E_(EE)
Trailer towing (vehicles 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, bicycle, etc. Your vehicle is not designed for trailer
towing or for the use of tow hitch mounted carriers.

2104-1. Before driving
GS450h_300h_OM_OM30F92E_(EE)
Trailer towing (vehicles with towing package)
◆Weight limits
Check the allowable towing capacity, GVM (Gross Vehicle Mass), MPAC
(Maximum Permissible Axle Capacity), and permissible drawbar load before
towing. ( P. 546)
◆Towing hitch/bracket
Lexus recommends the use of the Lexus hitch/bracket for your vehicle. Other
products of a suitable nature and comparable quality may also be used.
Your vehicle is designed primaril y as a passenger carrying vehicle.
Towing a trailer will have an adverse effect on handling, performance, brak-
ing, durability, and fuel consumption. Your safety and satisfaction depend on
the proper use of correct equipment and cautious driving habits. For your
safety and the safety of others, do not overload the vehicle or trailer.
To tow a trailer safely, use extreme care and drive the vehicle in accordance
with the trailer’s characteristics and operating conditions.
Lexus warranties do not apply to damage or malfunction caused by towing a
trailer for commercial purposes.
Ask your local authorized Lexus retailer or Lexus authorized repairer, or any
reliable repairer for further details before towing, as there are additional legal
requirements in some countries.

2114-1. Before driving
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Driving
GS450h_300h_OM_OM30F92E_(EE)
■Total trailer weight and permissible drawbar load
Total trailer weight
Weight of the trailer itself plus the trailer load should be within the max-
imum towing capacity. Exceeding this weight is dangerous. ( P. 546)
When towing a trailer, use a friction
coupler or friction stabilizer (sway control device).
Permissible drawbar load
Allocate the trailer load so that the drawbar load is greater than 25 kg (55.1 lb.) or4% of the towing capacity. Do not let the drawbar load exceed the indicatedweight. ( P. 546)
■Information tag (manufacturer’s label)
Gross vehicle mass
The combined weight of the driver, passengers, towing hitch, luggage,
total curb mass and drawbar load should not exceed the gross vehiclemass by more than 100 kg (220.5
lb.). Exceeding this weight is danger- ous.
Maximum permissible rear axle capacity
The weight borne by the rear axle should not exceed the maximum permissibleaxle capacity by 15% or more. Exceeding this weight is dangerous.
The values for towing capacity were derived from testing conducted at sea level.
Take note that engine output and towing capacity will be reduced at high altitudes.
Important points regarding trailer loads
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WARNING
■When the gross vehicle mass limit or maximum permissible axle capacity is exceeded
Do not exceed the established speed limit fo r towing a trailer in built-up areas or 100 km/h (62 mph), whichever is lower.
Failing to observe this precaution may lead to an accident causing death or serious injury.
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2134-1. Before driving
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Driving
GS450h_300h_OM_OM30F92E_(EE)
■Tire information
●Increase the tire inflation pressure to 20.0 kPa (0.2 kgf/cm2 or bar, 3 psi) greater than the recommended value when towing. ( P. 555)
●Increase the air pressure of the trailer tires in accordance with the total trailer weight
and according to the values recommended by the manufacturer of your trailer.
■Trailer lights
●Please consult any authorized Lexus retailer or Lexus authorized repairer, or any reli-
able repairer when installing trailer lights, as incorrect installation may cause damage to the vehicle’s lights. Please take care to comply with your state’s laws when installingtrailer lights.
●Check that the turn signal lights and stoplights are operating correctly every time youhitch up the trailer. Directly wiring up to your vehicle may damage the electrical systemand stop the lights from functioning correctly.
■Break-in schedule
Lexus recommends that vehicles fitted with new power train components should not be used for towing trailers for the first 800 km (500 miles).
■Safety checks before towing
●Check that the maximum load limit for the towing hitch/bracket and hitch ball is not exceeded. Bear in mind that the coupling weight of the trailer will add to the load
exerted on the vehicle. Also make sure that the total load exerted on the vehicle is within the range of the weight limits. ( P. 211)
●Ensure that the trailer load is secure.
●Supplementary outside rear view mirrors should be added to the vehicle if the traffic behind cannot be clearly seen with standard mirrors. Adjust the extending arms ofthese mirrors on both sides of the vehicle so that they always provide maximum visibility
of the road behind.
■Maintenance
●Maintenance must be performed more frequently when using the vehicle for towing
due to the greater weight burden placed on the vehicle compared to normal driving.
●Retighten all bolts securing the hitching ball and bracket after towing for approximately 1000 km (600 miles).
NOTICE
■When the rear bumper strengthening material is aluminum
Ensure the steel bracket part does not come directly in contact with that area. When steel and aluminum come into contact, there is a reaction similar to corrosion,which will weaken the section concerned and may result in damage. Apply a rust inhib-
itor to parts that will come in co ntact when attaching a steel bracket.

2144-1. Before driving
GS450h_300h_OM_OM30F92E_(EE)
Your vehicle will handle differently when towing a trailer. In order to avoid acci-
dent, death or serious injury, keep the following in mind when towing:
■Checking connections between trailer and lights
Stop the vehicle and check the operation of the connection between the
trailer and lights after driving for a brief period as well as before starting off.
■Practicing driving with a coupled trailer
●Get the feel for turning, stopping an d reversing with the trailer coupled by
practicing in an area with no or light traffic.
●When reversing with a coupled trailer, hold the section of the steering
wheel nearest to you and rotate clockwise to turn the trailer left or counter-
clockwise to turn it right. Always rotate a little at a time to prevent steering
error. Have someone guide you when reversing to lessen the risk of an
accident.
■Increasing vehicle-to-vehicle distance
At a speed of 10 km/h (6 mph), the distance to the vehicle running ahead of
you should be equivalent to or greater than the combined length of your vehi-
cle and trailer. Avoid sudden braking that may cause skidding. Otherwise, the
vehicle may spin out of control. This is especially true when driving on wet or
slippery road surfaces.
■Sudden acceleration/steering input/cornering
Executing sharp turns when towing may result in the trailer colliding with your
vehicle. Decelerate well in advance when approaching turns and take them
slowly and carefully to avoid sudden braking.
■Important points regarding turning
The wheels of the trailer will travel closer to the inside of the curve than the
wheels of the vehicle. To make allowance for this, take the turns wider than you
would normally do.
■Important points regarding stability
Vehicle movement resulting from uneven road surfaces and strong cross-
winds will affect handling. The vehicle may also be rocked by passing buses or
large trucks. Frequently check behind when moving alongside such vehicles.
As soon as such vehicle movement occurs, immediately start to decelerate
smoothly by slowly applying the brakes. Always steer the vehicle straight
ahead while braking.
Guidance