Transmission Lexus IS250 2010 Owner's Guide

136
2-1. Driving procedures
IS350/250_U
■Changing “ENGINE STAR T STOP” switch mode
Modes can be changed by pressing the “ENGINE START STOP”
switch with the brake pedal (vehicles with an automatic transmission)
or clutch pedal (vehicles with a manual transmission) released. (The
mode changes each time the switch is pressed.)
OFF*
The emergency flashers can be
used.
ACCESSORY mode
Some electrical components
such as the audio system can be
used.
The “ENGINE START STOP”
switch indicator turns amber.
IGNITION ON mode
All electrical components can
be used.
The “ENGINE START STOP”
switch indicator turns amber.
*: If the shift lever is in a positionother than P when turning off
the engine, the “ENGINE
START STOP” switch will be
turned to ACCESSORY mode,
not to OFF. (vehicles with auto-
matic transmission)

137
2-1. Driving procedures
2
When driving
IS350/250_U
■If the engine does not start
The engine immobilizer system may not have been deactivated. (→P. 8 6 )
■When the steering lock cannot be released
■When the “ENGINE START STOP” switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Lexus
dealer immediately.
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than an hour with the shift lever
in P (vehicles with an automatic transmission), the “ENGINE START STOP” switch
will automatically turn OFF.
■Electronic key battery depletion
→P. 3 4
■When the electronic key battery is fully discharged
→P. 4 3 4
■Conditions affecting operation
→P. 3 2
■Note for the entry function
→P. 3 5 The “ENGINE START STOP” switch indica-
tor will flash in green and a message will be
shown on the multi-information display. Press
the “ENGINE START STOP” switch again
while turning the steering wheel left and right.

139
2-1. Driving procedures
2
When driving
IS350/250_U
Automatic transmission∗
Select a shift position appropriate for the driving conditions.
■Shifting the shift lever
While the “ENGINE START STOP” switch is in IGNITION
ON mode, depress the brake pedal and move the shift lever.
■ Shift position uses
*: To improve fuel consumption and reduce noises, set the shift lever in the D
position for normal driving.
Shift positionFunction
PParking the vehicle or starting the engine
RReversing
NNeutral
DNormal driving*
SS mode driving ( →P. 1 4 2 )
∗: If equipped

143
2-1. Driving procedures
2
When driving
IS350/250_U
■When the “-” shift paddle switch is operated in the D position
When the “-” shift paddle switch is operated in the D position, a shift range will be
automatically selected. The highest gear of the first shift range will be one gear
lower than the gear in use during normal D position driving.
■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
●When range 6 is selected and the accelerator pedal is depressed
●If the accelerator pedal is depressed for more than a certain period of time
■To protect automatic transmission
A function is adopted that automatically selects a higher shift range when the fluid
temperature is high.
■Gear position display when driving
The current gear is displayed on the multi-information display. (→P. 1 6 3 )
■Downshifting restrictions warning buzzer
To help ensure safety and driving performance, downshifting operation may some-
times be restricted. In some circumstances, downshifting may not be possible even
when the shift lever or shift paddle switch is operated. (The warning buzzer will
sound twice.)
■When driving with the cruise control system or dynamic radar cruise control sys-
tem
Engine braking will not occur during shift range selection in the D position or S
mode, even when downshifting to range 5 or 4. ( →P. 175, 179)
■Snow mode automatic deactivation
Snow mode is automatically deactivated if the “ENGINE START STOP” switch is
turned off after driving in snow mode.
■If the shift lever cannot be shifted from P
→P. 5 0 3

144
2-1. Driving procedures
IS350/250_U
■If does not come on even after shifting the shift lever to S
This may indicate a malfunction in the automatic transmission system. Have the
vehicle inspected by your Lexus dealer immediately.
(In this situation, the vehicle will operate as if the shift lever is in D.)
■AI-SHIFT
The AI-SHIFT automatically shifts the gear to the optimal position according to the
driver performance and driving conditions.
The AI-SHIFT automatically operates when the shift lever is in the D position. How-
ever, operating the “-” shift paddle switch will restrict the function’s operation. (Shift-
ing the shift lever to the S position cancels the function.)
CAUTION
■When driving on slippery road surfaces
Be careful of downshifting and sudden acceleration, as this could result in the vehi-
cle skidding to the side or spinning.

145
2-1. Driving procedures
2
When driving
IS350/250_U
Manual transmission∗
■Shifting the shift lever
Fully depress the clutch pedal
before operating the shift lever,
and then release it slowly.
■ Shifting the shift lever into R
Shift the shift lever into the R
position while lifting up the ring
section.
∗: If equipped

148
2-1. Driving procedures
IS350/250_U
Parking brake
■Usage in winter time
See “Winter driving tips” for parking brake usage in winter time. (→P. 2 1 0 )
Vehicles with an automatic transmission
Sets the parking brake
*
(Depressing the pedal again
releases the parking brake.)
*: Fully depress the parkingbrake pedal with your left
foot while depressing the
brake pedal with your right
foot.
Vehicles with a manual transmission
Sets
the parking brake
Fully set the parking brake while depressing the brake pedal.
Releases the parking brake
Slightly raise the lever and lower it completely while pressing the button.
Canada U.S.A.
Canada
U.S.A.

158
2-2. Instrument cluster
IS350/250_U
■Indicators
The indicators inform the driver of the operating state of the vehi-
cle’s various systems.
Turn signal indicator
(→ P. 1 4 7 )
(vehicles with
an automatic
transmission)
“ECT SNOW” indicator
(→ P. 1 4 0 )
Headlight high beam indi-
cator ( →P. 1 6 5 )
(vehicles with
a manual
transmission)
“ETCS SNOW” indicator
(→ P. 1 4 6 )
(U.S.A.)
Headlight indicator
(→ P. 1 6 5 )
(vehicles with
an automatic
transmission)
“ECT PWR” indicator
(→ P. 1 4 0 )
(Canada)
Tail light indicator
(→ P. 1 6 5 ) Cruise control indicator
(→ P. 1 7 5 )
Front fog light indicator
(→ P. 1 6 8 )
(if equipped)
“AFS OFF” indicator
(→ P. 1 6 6 )
(vehicles with an automatic trans-
mission)
Shift position and shift range indica-
tors ( →P. 1 3 9 )
(if equipped)
Intuitive parking assist
indicator ( →P. 1 9 0 )
Slip indicator ( →P. 1 9 7 )
VSC off indicator
(→ P. 1 9 8 )
SRS airbag on-off indica-
tor (→ P. 1 0 4 )
*
*
*
*

163
2-2. Instrument cluster
2
When driving
IS350/250_U■
Gear position display
(vehicles with an automatic transmission only)
Indicates the current gear, and the range of gears
that is available when the shift lever is in the D or S
position. The gear range is shown by the number of
dots ( •) and the current gear is shown as a number.
The transmission automatically selects the gears
within the driver selected gear range.
In the illustration to the left, a range of 6 available gears
(1 through 6) has been selected by the driver. (The shift
lever is in the D or S position with 6 ranges enabled) It is
possible for the transmission to automatically select
between all 6 of the gears. In this case, the transmission
has selected third gear.
■System check display
After switching the “ENGINE START STOP” switch to IGNITION ON mode,
“CHECK” is displayed while system operation is checked. When the system check
is complete, “COMPLETED” is displayed before returning to the normal screen.
■Outside temperature display
In the following situations, the correct outside temperature may not be displayed, or
the display may take longer than normal to change.
●When stopped, or driving at low speeds (less than 12 mph [20 km/h])
●When the outside temperature has changed suddenly (at the entrance/exit of a
garage, tunnel, etc.)

176
2-4. Using other driving systems
IS350/250_U
■Adjusting the speed setting
Increase speed
Decrease speed
Hold the lever until the desired
speed setting is obtained.
Fine adjustment of the set
speed (approximately 1.0 mph
[1.6 km/h]) can be made by
lightly pressing the lever up or
down and releasing it.
■Canceling and resuming regular acceleration
Cancel
Push the lever towards you to
cancel cruise control.
The speed setting is also can-
celed when the brakes are
applied or the clutch (manual
transmission) is depressed.
Resume
To resume cruise control and
return to the set speed, push the
lever up.