Lexus IS300 2019 Owner's Manual / 2019 IS300,IS350 OWNER'S MANUAL (OM53E71U)

1814-1. Before driving
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U
Cargo capacity
Total load capacity (vehicle capacity
weight) (P. 586)
When 2 people with the combined weight of A lb. (kg) are riding in your vehicle,
which has a total load capacity (vehicle capacity weight) of B lb. (kg), the avail-
able amount of cargo and 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 load w ill be reduced E lb. (kg) as follows:
C lb. (kg) - D*4 lb. (kg) = E*5 lb. (kg)
*4: D =Additional weight of people
*5: E =Available cargo and luggage load
As shown in the example above, if the nu mber of occupants increases, the cargo
and luggage load will be reduced by an amount that equals the increased weight
due to the additional occupants. In other words, if an increase in the number of
occupants causes an excess of the total load capacity (combined weight of occu-
pants plus cargo and luggage load), yo u must reduce the cargo and luggage on
your vehicle.
Calculation formula for your vehicle
1
2

1824-1. Before driving
IS350 AWD/IS350/IS300 AWD/IS300_U
WARNING
■Things that must not be carried in the trunk
The following things may cause a fire if loaded in the trunk:
●Receptacles containing gasoline
●Aerosol cans
■Storage precautions
Observe the following precautions.
Failure to do so may prevent the pedals from being depressed properly, may block the
driver’s vision, or may result in items hittin g the driver or passengers, possibly causing
an accident.
●Stow cargo and lugg age in the trunk whenever possible.
●To prevent cargo and luggage from sliding forward during braking, do not stack any-
thing in the enlarged trunk. Keep cargo and luggage low, as close to the floor as pos-
sible.
●When you fold down the rear seats, long items should not be placed directly behind
the front seats.
●Never allow anyone to ride in the enlarged trunk. It is not designed for passengers.
They should ride in their seats with their seat belts properly fastened.
●Do not place cargo or luggage in or on the following locations.
• At the feet of the driver
• On the front passenger or re ar seats (when stacking items)
• On the package tray
• On the instrument panel
•On the dashboard
• In front of the Lexus Display Audio scre en (if equipped) or navigation system
screen (if equipped)
●Secure all items in the occupant compartment.
■Capacity and distribution
●Do not exceed the maximum axle weight rating or the total vehicle weight rating.
●Even if the total load of occupant’s weight and the cargo load is less than the total load
capacity, do not apply the load unevenly. Improper loading may cause deterioration
of steering or braking control whic h may cause death or serious injury.

1834-1. Before driving
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U
◆Total load capacity (vehicle capacity weight): (P. 586)
Total load capacity means the combined weight of occupants, cargo and lug-
gage.
◆Seating capacity: 5 occupants (Front 2, Rear 3)
Seating capacity means the maximum number of occupants whose estimated
average weight is 150 lb. (68 kg) per person.
◆Towing capacity
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. 495)
Vehicle load limits
Vehicle load limits include total load capacity, seating capacity, towing capac-
ity 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.

1844-1. Before driving
IS350 AWD/IS350/IS300 AWD/IS300_U
Trailer towing
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.

1854-1. Before driving
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U
Dinghy towing
Your vehicle is not designed to be dinghy towed (with 4 wheels on the ground)
behind a motor home.
NOTICE
■To avoid serious damage to your vehicle
Do not tow your vehicle with the four wheels on the ground.

186
IS350 AWD/IS350/IS300 AWD/IS300_U4-2. Driving procedures
Check that the parking brake is set.
Check that the shift lever is in P.
Firmly depress the brake pedal.
and a message will be
displayed on the multi-information display.
If it is not displayed, th e engine cannot be started.
Press the engine switch shortly and
firmly.
When operating the engine switch, one
short, firm press is enough. It is not nec-
essary to press and hold the switch.
The engine will crank until it starts or for
up to 30 seconds, whichever is less.
Continue depressing the brake pedal
until the engine is completely started.
The engine can be started from any
engine switch mode.
Stop the vehicle.
Set the parking brake ( P. 200), and shift the shift lever to P.
Press the engine switch.
Release the brake pedal and check that the display on the meters is off.
Engine (ignition) switch
Performing the following operations wh en carrying the electronic key on your
person starts the engine or changes engine switch modes.
Starting the engine
1
2
3
4
Stopping the engine
1
2
3
4

1874-2. Driving procedures
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U
Modes can be changed by pressing the engine switch with brake pedal released.
(The mode changes each time the switch is pressed.)
Off
*
The emergency flashers can be used.
The multi-information display will not be
displayed.
ACCESSORY mode
Some electrical components such as the
audio system can be used.
“ACCESSORY” will be displayed on the
meters.
IGNITION ON mode
All electrical components can be used.
“IGNITION ON” will be displayed on
the meters.
*: If the shift le ver is in a position other than
P when turning off the engine, the
engine switch will be turned to ACCES-
SORY mode, not to off.
If the engine is stopped with the shift lever in a position other than P, the engine
switch will not be turned off but inst ead be turned to ACCESSORY mode. Per-
form the following procedure to turn the switch off:
Check that the parking brake is set.
Shift the shift lever to P.
Check that “Turn Off Vehicle” is disp layed on the multi-information display
and then press the engine switch once.
Check that “Turn Off Vehicle” on th e multi-information display is off.
Changing engine switch modes
1
2
3
When stopping the engine with the shift lever in a position other than P
1
2
3
4

1884-2. Driving procedures
IS350 AWD/IS350/IS300 AWD/IS300_U
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or IGNITION ON
mode (the engine is not running) for more than an hour with the shift lever in P, the engine
switch will automatically turn off. However, this function cannot entirely prevent battery
discharge. Do not leave the vehicle with the engine switch in ACCESSORY or IGNI-
TION ON mode for long periods of ti me when the engine is not running.
■Electronic key battery depletion
P. 121
■Conditions affe cting operation
 P. 137
■Notes for the entry function
P. 138
■If the engine does not start
●Check that the shift lever is se curely set in P. The engine may not start if the shift lever is
displaced out of P.
●The engine immobilizer system ma y not have been deactivated. (P. 76)
Contact your Lexus dealer.
■Steering lock
After turning the engine switch off and opening and closing the doors, the steering wheel
will be locked due to the steering lock func tion. Operating the engine switch again auto-
matically cancels the steering lock.
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, operation of the motor may be sus-
pended if the engine is turned on and off repeat edly in a short period of time. In this case,
refrain from operating the engine switch. After about 10 seconds, the steering lock
motor will resume functioning. “Steering Wheel Lock Press Engine Switch
while Turning Wheel” w ill be displayed on the
multi-information display.
Check that the shift leve r is in P. Press the
engine switch while turn ing the steering wheel
left and right.

1894-2. Driving procedures
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U
■When “Access System with Elec. Key Malfunction See Owner’s Manual” is displayed
on the multi-information display
The system may be malfunctio ning. Have the vehicle inspected by your Lexus dealer
immediately.
■If the electronic key battery is depleted
 P. 502
■Operation of the engine switch
●If the switch is not pressed shortly and firmly, the engine switch mode may not change
or the engine may not start.
●If attempting to restart the engine immediately after turning the engine switch off, the
engine may not start in some cases. After turning the engine switch off, please wait a
few seconds before restarting the engine.
■If the smart access system wi th push-button start has been deactivated by a customized
setting
 P. 572
WARNING
■When starting the engine
Always start the engine while sitting in the driver’s seat. Do not depress the accelerator
pedal while starting the engine under any circumstances.
Doing so may cause an accident resu lting in death or serious injury.
■Caution while driving
If engine failure occurs while the vehicle is moving, do not lock or open the doors until
the vehicle reaches a safe and complete stop. Activation of the steering lock in this cir-
cumstance may lead to an accident, re sulting in death or serious injury.
■Stopping the engine in an emergency
If you want to stop the engine in an emergency while driving the vehicle, press and hold
the engine switch for more than 2 seconds, or press it briefly 3 times or more in succes-
sion. ( P. 515)
However, do not touch the engi ne switch while driving except in an emergency. Turning
the engine off while driving will not cause lo ss of steering or braking control, but the
power assist to these systems will be lost. Th is will make it more difficult to steer and
brake, so you should pull over and stop the vehicle as soon as it is safe to do so.

1904-2. Driving procedures
IS350 AWD/IS350/IS300 AWD/IS300_U
NOTICE
■To prevent battery discharge
●Do not leave the engine switch in AC CESSORY or IGNITION ON mode for long
periods of time without the engine running.
●If “ACCESSORY” or “IGNITION ON” is displa yed on the meters while the engine is
not running, the engine switch is not off. Exit the vehicle after turning the engine
switch off.
●Do not stop the engine when the shift lever is in a position other than P. If the engine is
stopped in another shift lever position, the engine switch will not be turned off but
instead be turned to ACCESSORY mode. If the vehicle is left in ACCESSORY
mode, battery discharge may occur.
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have your vehicle checked
by your Lexus dealer immediately.
■Symptoms indicating a malfun ction with the engine switch
If the engine switch seems to be operating somewhat differen tly than usual, such as the
switch sticking slightly, ther e may be a malfunction. Contact your Lexus dealer immedi-
ately.