2010 Lexus IS250C display

84
1-4. Opening and closing the windows and retractable hardtop
10_IS250C/350C_UOperation with interruption
During operation
The bar display shows the progress of the operation of the retractable
hardtop.
Interruption of operation
Operation of the retractable hardtop will be suspended if the switch is
released, the operating conditions are no longer met or there is a mal-
function. (
→P. 8 6 )
Resumption of operation
Operating the switch again causes the retractable hardtop to resume
operation.
The bar display will not be shown after operation is suspended.
Completion of operation
When operation is finished, “COMPLETE” will be shown on the dis-
play.
■ Advice and warning message display
A message will be displayed if operating conditions for the retractable
hardtop are not met or if there is a malfunction in the system.
(→ P. 475)

85
1-4. Opening and closing the windows and retractable hardtop
1
Before driving
10_IS250C/350C_U
Retractable hardtop operation control linked to the intuitive parking
assist (vehicles with an intuitive parking assist)
This function detects if there is an obstruction behind the vehicle and reg-
ulates retractable hardtop operation according to the vehicle’s distance
from that obstruction.
This function is merely designed to assist the driver and is not a guarantee
of the safety of the area behind the vehicle. The driver should always
check the vehicle’s surroundings with their own eyes before operating the
retractable hardtop.
■ Operation controls according to each detection area
Area within approximately
1.2 ft. (35 cm) of the vehicle
Area approximately
1.2 ft. (35 cm) to 1.5 ft. (45 cm)
away from the vehicle
Areas within approximately
0.8 ft. (25 cm) of the vehicle
Areas approximately
0.8 ft. (25 cm) to
1.3 ft. (37.5 cm) away from the
vehicle
This function only operates in the
areas indicated in the illustration.
Therefore, obstructions too close
to the sensors cannot be detected.
●If an obstruction is detected in area or when the switch is oper-
ated
A buzzer will sound and a message will be shown in the multi-informa-
tion display to alert the driver.
If the switch is held up or down for 3 seconds while the message is being dis-
played, retractable hardtop operation will start normally.

86
1-4. Opening and closing the windows and retractable hardtop
10_IS250C/350C_U●
If an obstruction is detected in area or when the switch is oper-
ated
A buzzer will sound twice and a message will be shown in the multi-
information display. Retractable hardtop operation will not activate.
If the switch is released and then operated again within 2 seconds, the buzzer
will sound again and a message will be shown in the multi-information display
to alert the driver. If the switch is held up or down for 3 seconds, retractable
hardtop operation will start normally.
If an obstruction is detected in area or while the trunk lid is operat-
ing, a buzzer will sound twice and a message will be shown in the multi-
information display. Retractable hardtop operation will be suspended for
safety reasons.
Ensure that no obstructions are near the vehicle and then operate the
switch again.
■Operating conditions
●The vehicle is stopped.
●The engine is running. (Operation while the engine is not running is possible if
the “ENGINE START STOP” switch is in IGNITION ON mode, but for optimal
operation the engine should be running.)
●The trunk lid is closed.
●The trunk opener main switch is on. (→ P. 4 7 )
●The luggage cover in the trunk is properly set. ( →P. 8 2 )
When the vehicle is on an incline or an uneven surface, the retractable hardtop may
not activate properly.
If the intuitive parking assist detect an obstruction behind the vehicle, the retract-
able hardtop may not operate.
■Switch operation when the operating conditions are not met
Even if all of the operating conditions are not met, when the switch is operated with
the vehicle stopped and the retractable hardtop fully closed, the following opera-
tions can be performed:
●Holding the switch up closes all the side windows.
●Holding the switch down opens all the side windows.

87
1-4. Opening and closing the windows and retractable hardtop
1
Before driving
10_IS250C/350C_U
■When a message appears and the retractable hardtop does not operate
Check the message contents and perform the recommended procedure, then
operate the switch again. (→P. 4 7 5 )
■Retractable hardtop operation control linked to the intuitive parking assist
●This function will activate when the intuitive parking assist is on. ( →P. 3 4 9 )
●Once the trunk lid has been fully opened, this function will be disabled.
●The trunk lid can be closed even when an obstruction is detected by operating
the retractable hardtop operation switch in the opposite direction.
■If the intuitive parking assist is dirty or malfunctioning
If a message is shown in the multi-information display indicating that a sensor is mal-
functioning or needs to be cleaned, the retractable hardtop cannot be operated
normally. To start retractable hardtop operation, turn the intuitive parking assist off
and operate the switch for the retractable hardtop again, or hold the switch up or
down for 6 seconds or more. In this case, retractable hardtop operation control
linked to the intuitive parking assist-sensor will not function.
■Customization that can be configured at a Lexus dealer
Setting of the intuitive parking assist linked function can be changed.
(Customizable features →P. 5 5 7 )

When driving2
131
10_IS250C/350C_U
2-1. Driving proceduresDriving the vehicle.................. 132
Engine (ignition) switch ......... 142
Automatic transmission ........ 147
Manual transmission .............. 154
Turn signal lever ....................... 156
Parking brake ........................... 157
Horn ............................................ 158
2-2. Instrument cluster Gauges and meters ................ 159
Indicators and warning lights ......................................... 165
Multi-information display ..... 168
2-3. Operating the lights and windshield wipers
Headlight switch...................... 173
Fog light switch ......................... 176
Windshield wipers and washer ..................................... 177
Headlight cleaner switch...... 182 2-4. Using other driving
systems
Cruise control.......................... 183
Dynamic radar cruise control ..................................... 187
Intuitive parking assist ........... 198
Driving assist systems ........... 204
Hill-start assist control .......... 210
PCS (Pre-Collision System) ....... 212
2-5. Driving information Cargo and luggage ................ 216
Vehicle load limits ................... 219
Winter driving tips ................. 220
Trailer towing .......................... 224
Dinghy towing (vehicles with an
automatic transmission).... 225
Dinghy towing (vehicles with a
manual transmission) ......... 226

145
2-1. Driving procedures
2
When driving
10_IS250C/350C_U
■If the engine does not start
The engine immobilizer system may not have been deactivated. (→P. 9 3 )
■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 2 5
■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.

149
2-1. Driving procedures
2
When driving
10_IS250C/350C_U
Selecting shift ranges in the D positionTo drive using temporary shift range selection, operate the “-” shift paddle
switch. The shift range can then be selected by operating the “-” and “+”
shift paddle switches. Changing the shift range allows restriction of the
upper limit of the gears to be used, preventing unnecessary upshifting
and enabling the level of engine braking force to be selected. Higher shift range
Lower shift range
The selected shift range, from 1 to
6, will be displayed in the meter
cluster.
To return to normal D position
driving, the “+” shift paddle switch
must be held down for a period of
time.

151
2-1. Driving procedures
2
When driving
10_IS250C/350C_U
Changing shift ranges in S modeTo enter S mode, shift the shift lever to the S position. The shift range can
then be selected by operating the “-” and “+” shift paddle switches or the
shift lever. Changing the shift range allows restriction of the upper limit of
the gears to be used, preventing unnecessary upshifting and enabling the
level of engine braking force to be selected. Higher shift range
Lower shift range
The selected shift range, from 1 to
6, will be displayed in the meter
cluster.
The initial shift range in S mode is automatically set to 5 or 4 according to
vehicle speed. However, the initial shift range may be set to 3 or 2 if the
AI-SHIFT has operated while the shift lever was in the D position.
(→ P. 153)
■ Shift ranges and their functions
→ P. 1 5 0