window Lexus IS250C 2014 Owner's Guide

89
1-4. Opening and closing the windows and retractable hardtop
1
Before driving
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. 9 1 )
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, “COMPL ETE” 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. 503)

90
1-4. Opening and closing the windows and retractable hardtop
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.

91
1-4. Opening and closing the windows and retractable hardtop
1
Before driving
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. 5 1 )
●The luggage cover in the trunk is properly set. ( →P. 8 7 )
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.

92
1-4. Opening and closing the windows and retractable hardtop
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. 5 0 3 )
■Retractable hardtop operation control linked to the intuitive parking assist
●This function will activate when the intuitive parking assist is on. ( →P. 366)
●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 sw itch 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 8 6 )

93
1-4. Opening and closing the windows and retractable hardtop
1
Before driving
IS250C/350C_U
CAUTION
■When opening or closing the retractable hardtop
Observe the following precautions.
Failure to do so may result in death or serious injury.
●Keep hands away from the hinges and rail parts of the retractable hardtop as well
as any other part of the hardtop linkage mechanism.
●Do not operate the retractable hardtop in strong winds.
●Do not disconnect the battery when the retractable hardtop is partially open.
■While the vehicle is moving
●The vehicle should never be driven with the retractable hardtop partially open.
●Do not allow passengers to stand on seats, sit on the package tray or lean over
the vehicle.
■When children are in the vehicle
Do not allow children to operate the retractable hardtop.
Doing so may cause the child or another person to become caught in the retract-
able hardtop mechanism, resulting in death or serious injury.
●Check to make sure that all passengers do
not have any part of their body in a position
where it could be caught when a retract-
able hardtop is being operated. If someone
becomes caught in the mechanism, release
the switch immediately to stop operation.
●As parts of the trunk move, ensure that no
one is near the vehicle while the retractable
hardtop is operating.

94
1-4. Opening and closing the windows and retractable hardtop
IS250C/350C_U
NOTICE
■Precautions for opening/closing the retractable hardtop
●Before operating the retractable hardtop, make sure that the areas 2.3 ft. (70
cm) above the roof and 1.2 ft. (35 cm) behind the rear bumper is clear of obstruc-
tions.
●Do not put any items or packages on the package tray even if they are extremely
small.
●Do not store luggage on or allow anyone to sit on the retractable hardtop.
●When the outside temperature is -4°F (-20°C) or below or if the side windows
are frozen shut, do not open or close the retractable hardtop.
●Do not open the retractable hardtop if it is wet. Possible interior water damage,
water stains or mildew may result.
●When opening or closing the retractable hardtop, turn the rear window defog-
gers off.
●Do not leave the vehicle for an extended period of time with an open or close
operation incomplete.
●Do not open the trunk lid while the retractable hardtop is operating.
●If the retractable hardtop is operated repeatedly within a short period of time, the
motor protection circuit may activate, causing the roof switch to be disabled. In
this case, turn the “ENGINE START STOP” switch to ACCESSORY mode or off
and, after waiting for a while, perform the procedure again.
●Do not place anything on or under the luggage cover.
●The luggage cover should be attached securely. Protruding luggage may inter-
fere with the proper operation of the retractable hardtop, causing it to become
damaged.
■To prevent battery discharge
Do not operate the retractable hardtop repeatedly when the engine is off.

95
1
Before driving
IS250C/350C_U
1-5. Refueling
Opening the fuel tank cap
Perform the following steps to open the fuel tank cap.
■Before refueling the vehicle
Turn the “ENGINE START STOP” switch OFF and ensure that both
side doors and windows are closed.
■ Opening the fuel tank cap
Press the opener switch.
Turn the fuel tank cap slowly to
open.
Hang the fuel tank cap on the
back of the fuel filler door.
STEP1
STEP2
STEP3

101
1-6. Theft deterrent system
1
Before driving
IS250C/350C_U
■System maintenance
The vehicle has a maintenance-free type alarm system.
■Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the
following.
●Nobody is in the vehicle.
●The windows and retractable hardtop are closed before the alarm is set.
●No valuables or other personal items are left in the vehicle.
■Triggering of the alarm
The alarm may be triggered in the following situations.
Stopping the alarm deactivates the system.
●A person inside the vehicle opens a door,
the trunk or hood.
●The battery is recharged or replaced
when the vehicle is locked.

115
1-7. Safety information
1
Before driving
IS250C/350C_U
CAUTION
■SRS airbag precautions
●If the vinyl cover is put on the area where the SRS knee airbag will deploy, be sure
to remove it.
●Do not use seat accessories which cover the parts where the SRS side airbags
inflate as they may interfere with inflation of the airbags.
●Do not strike or apply significant levels of force to the area of the SRS airbag
components shown on P. 107.
Doing so can cause the SRS airbags to malfunction.
●Do not touch any of the component parts immediately after the SRS airbags have
deployed (inflated) as they may be hot.
●If breathing becomes difficult after the SRS airbag has deployed, open a door or
window to allow fresh air in, or leave the vehicle if it is safe to do so. Wash off any
residue as soon as possible to prevent skin irritation.
●If the areas where the SRS airbags are stored, such as the steering wheel pad, are
damaged or cracked, have them replaced by your Lexus dealer.
●Do not attach anything to or lean anything
against areas such as the dashboard, steer-
ing wheel pad and lower portion of the
instrument panel.
These items can become projectiles when
SRS driver, front passenger and knee
airbags deploy.
●Do not attach anything to areas such as the
door.

139
2-1. Driving procedures
2
When driving
IS250C/350C_U
■Starting off on a hill
Hill-start assist control will operate. (→P. 2 2 0 )
■Driving in the rain
●Drive carefully when it is raining, because visibility will be reduced, the windows
may become fogged-up, and the road will be slippery.
●Drive carefully when it starts to rain, because the road surface will be especially
slippery.
●Refrain from high speeds when driving on an expressway in the rain, because
there may be a layer of water between the tires and the road surface, preventing
the steering and brakes from operating properly.
■Engine speed while driving
In the following conditions, the engine speed may become high while driving. This is
due to automatic up-shifting control or down-shifting implementation to meet driv-
ing conditions. It does not indicate sudden acceleration.
●The vehicle is judged to be driving uphill or downhill
●When the accelerator pedal is released
■Breaking in your new Lexus
To extend the life of the vehicle, the following precautions are recommended to
observe:
●For the first 186 miles (300 km):
Avoid sudden stops.
●For the first 621 miles (1000 km):
• Do not drive at extremely high speeds.
• Avoid sudden acceleration.
• Do not drive continuously in the 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 parking brake system. This type of brake sys-
tem needs bedding-down of the brake shoes periodically or whenever the parking
brake shoes and/or drum are replaced. Have your Lexus dealer perform the bed-
ding down.