Lexus IS250C 2010 Do-It-Yourself Maintenance / LEXUS 2010 IS350C/250C (OM53A20U) Manual Online

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1
1-4. Opening and closing the windows and retractable hardtop
Before driving
Retractable hardtop
The retractable hardtop can be opened and closed using a switch.
Opening the retractable hardtop
Press and hold the switch until “COMPLETE” is shown on the dis-
play.
The side windows will open as retract able hardtop operation is performed.
A buzzer will sound when operation is complete.
Closing the retractable hardtop
Pull up and hold the switch unti l “COMPLETE” is shown on the dis-
play.
The side windows will open as retract able hardtop operation is performed.
A buzzer will sound when operation is complete.
Continuing to hold the switch up af ter operation is complete closes the
side windows.
Retractable hardtop status display ( P. 8 3 )

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1-4. Opening and closing the windows and retractable hardtop
Luggage coverThe luggage cover is used to ensure that there is enough space for the
retractable hardtop to be stored.
Proper installation of the luggage cover enables retractable hardtop
operation.
Pull the board of the luggage
cover toward you to unhook the
hooks.
Pull the luggage cover further until
the tabs on the sides of the cover fit
securely into the holders on the
sides of the trunk.
Make sure the upper part of the
board is securely positioned in the
holders.
Fit the tabs on the bottom of the
luggage cover int o the holders on
the floor of the trunk.
Make sure the lower part of the
board is securely positioned in the
holders on the floor.
STEP1
STEP2
STEP3

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1-4. Opening and closing the windows and retractable hardtop
1
Before driving
Retractable hardtop status displayInformation regarding the retractabl e hardtop is shown on the multi-
information display.
■ Roof Function Status Indicator
This indicator shows the operation status of the retractable hardtop.
Operation without interruption
During operation
The bar display shows the progress of the operation of the retractable
hardtop.
Completion of operation
When operation is finished, “COMPLETE” will be shown on the dis-
play.

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1-4. Opening and closing the windows and retractable hardtop
Operation 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 sh own 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 operat ing conditions for the retractable
hardtop are not met or if there is a malfunction in the system.
( P. 4 8 1 )

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1-4. Opening and closing the windows and retractable hardtop
1
Before driving
Retractable hardtop operation control linked to the intuitive parking
assist (vehicles with an intuitive parking assist)
This function detects if there is an ob struction 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 d etected 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
●If an obstruction is d etected in area or when the switch is oper-
ated
A buzzer will sound twice and a messa ge will be shown in the multi-
information display. Retractable hardtop operation will not activate.
If the switch is released and then oper ated 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 he ld 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 hard top 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 op ens all the side windows.

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1-4. Opening and closing the windows and retractable hardtop
1
Before driving
■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 8 1 )
■Retractable hardtop operation control linked to the intuitive parking assist
●This function will activate when th e 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, th e retractable hardtop cannot be operated
normally. To start retractable hardtop operat ion, 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 6 4 )

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1-4. Opening and closing the windows and retractable hardtop
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 seat s, 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 th e 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.

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1-4. Opening and closing the windows and retractable hardtop
1
Before driving
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.
●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, caus ing 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.
■To prevent battery discharge
Do not operate the retractable hardtop repeatedly when the engine is off.

90
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” sw itch 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