2019 Lexus IS300 Transmission fluid change

1794-1. Before driving
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U
NOTICE
■When driving the vehicle
●Do not depress the accelerator and brake pedals at the same time during driving, as
this may restrain the engine output.
●Do not use the accelerator pedal or depre ss the accelerator and brake pedals at the
same time to hold the vehicle on a hill.
■When parking the vehicle
Always set the parking brake, and shift the sh ift lever to P. Failure to do so may cause
the vehicle to move or the vehicle may acce lerate suddenly if the accelerator pedal is
accidentally depressed.
■Avoiding damage to vehicle parts
●Do not turn the steering wheel fully in either direction and hold it there for an
extended period of time.
Doing so may damage the power steering motor.
●When driving over bumps in the road, drive as slowly as possible to avoid damaging
the wheels, underside of the vehicle, etc.
●IS300: Make sure to idle the engine imme diately after high-load driving. Stop the
engine only after the turb ocharger has cooled down.
Failure to do so may cause damage to the turbocharger.
■If you get a flat tire while driving
A flat or damaged tire may cause the following situations . Hold the steering wheel
firmly and gradually depress the brake pedal to slow down the vehicle.
●It may be difficult to control your vehicle.
●The vehicle will make abnormal sounds or vibrations.
●The vehicle will lean abnormally.
Information on what to do in case of a flat tire ( P. 559)
■When encountering flooded roads
Do not drive on a road that has flooded af ter heavy rain etc. Doing so may cause the
following serious damage to the vehicle:
●Engine stalling
●Short in electrical components
●Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle is flooded, be sure to have
your Lexus dealer check the following:
●Brake function
●Changes in quantity and quality of oil and fluid used for the engine, transmission,
transfer (AWD models), differentials, etc.
●Lubricant condition for the propeller shaft, bearings and suspension joints (where
possible), and the function of all joints, bearings, etc.

1944-2. Driving procedures
IS350 AWD/IS350/IS300 AWD/IS300_U
To enter M mode, shift the shift lever to M. Gears can then be selected by oper-
ating the shift lever or paddle shift switch es, allowing you to drive in the gear of
your choice.
Upshifting
Downshifting
The gear changes once every time the
shift lever or paddle shift switch is oper-
ated.
8-speed models: Th e selected gear,
from M1 to M8, will be fixed and dis-
played in the meter.
6-speed models: The selected gear,
from M1 to M6, will be fixed and dis-
played in the meter.
When in the M position, the gear will not change unless the shift lever \
or pad-
dle shift switches are operated.
However, even when in the M positi on, the gears will be automatically
changed in the following situation:
●When vehicle speed drops (downshift only).
●When the automatic transmission fluid or engine coolant temperature is
low.
●When automatic transmission fluid temperature is high.
●When the needle of the tachometer is in the red zone (the range which
exceeds the allowable revs of the engine).
In the following situations, the gear will no t shift even if the shift lever or paddle
shift switches are operated.
●“Slippery Road. Cannot Shift to Lowe r Gear” is displayed on the multi
information display.
●The vehicle speed is low (upshift only).
Selecting gears in the M position
1
2

1954-2. Driving procedures
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U
■Automatic deactivation of shift range selection in the D position
Shift range selection in the D position will be deactivated in the following situations:
●When the vehicle comes to a stop
●If the accelerator pedal is depressed fo r more than a certain period of time
●When the shift lever is shifted to a position other than D
■To protect the automatic transmission
“Transmission Fluid Temp High See Owner’s Manual” is displayed on the multi-informa-
tion display and a function is adopted that automatically selects a higher shift range when
the fluid temperature is high. Have the vehicle inspected by your Lexus dealer.
■Downshifting restriction warning buzzer
To help ensure safety and driving performance, downshifti ng operation may sometimes
be restricted. In some circum stances, downshifting may not be possible even when the
shift lever or paddle shif t switch is operated. (A buzzer will sound twice.)
■Snow mode automatic deactivation
Snow mode is automatically deactivated if the engine switch is turn ed off after driving in
snow mode.
■Gear position display on the multi-information display
When Gear positions is selected for a Drive Information screen on the multi-information
display and the shift lever is in the D or M position, the currently selected gear position
will be displayed on the multi-information disp lay. (The display changes according to the
shift lever position and driving conditions.)
■When driving with dynamic radar cruise control activated
Even when performing the following actions with the intent of enabling engine braking,
engine braking will not activate because dy namic radar cruise control will not be can-
celed.
●8-speed models: While driving in the D posi tion, downshifting to 7, 6, 5 or 4.
(  P. 248)
●6-speed models: While driving in the D position, downshifting to 5 or 4.
( P. 248)
●When switching the driving mode to sport mode while driving in D position.
( P. 297)
■Restraining sudden start (Drive-Start Control)
●When the following unusual operation is performed, the engine output may be
restrained.
• When the shift lever is shifted from R to D, D to R, N to R, P to D, or P to R (D
includes M) with the accelerator pedal depressed, a warning message appears on
the multi-information display. ( P. 537)
• When the accelerator pedal is depressed t oo much while the vehicle is in reverse.