Lexus IS250C 2014 Owners Manual

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.

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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.

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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 )

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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

96
1-5. Refueling
IS250C/350C_U
Closing the fuel tank capWhen replacing the fuel tank cap,
turn it until a clicking sound is
heard.
After releasing your hand, the cap
will turn slightly to the opposite
direction.
■Fuel types
Use unleaded gasoline. (Octane rating 91 [Research Octane Number 96] or
higher)
■Fuel tank capacity (reference)
17.2 gal. (65 L, 14.3 Imp. gal.)
■When the fuel filler door opener is inoperableThe lever can be used to open the fuel filler
door if the fuel filler door cannot be opened
using the inside switch because the battery is
discharged or for any other reason.

97
1-5. Refueling
1
Before driving
IS250C/350C_U
CAUTION
■Refueling the vehicle
Observe the following precautions while refueling the vehicle. Failure to do so may
result in death or serious injury.
●Touch the vehicle or some other metal surface to discharge any static electricity.
Sparks resulting from discharging static electricity may cause the fuel vapors to
ignite.
●Always hold the grips on the fuel tank cap and turn it slowly to remove it.
A whooshing sound may be heard when the fuel tank cap is loosened. Wait until
the sound cannot be heard before fully removing the cap. In hot weather, pressur-
ized fuel may spray out the filler neck and cause injury.
●Do not allow anyone that has not discharged static electricity from their bodies to
come close to an open fuel tank.
●Do not inhale vaporized fuel.
Fuel contains substances that are harmful if inhaled.
●Do not smoke while refueling the vehicle.
Doing so may cause the fuel to ignite and cause a fire.
●Do not return to the vehicle or touch any person or object that is statically
charged.
This may cause static electricity to build up, resulting in a possible ignition hazard.
■When replacing the fuel cap
Do not use anything but a genuine Lexus fuel tank cap designed for your vehicle.
Failure to do so may cause a fire or other incident which may result in death or seri-
ous injury.
NOTICE
■Refueling
Do not spill fuel during refueling.
Failing to do so may damage the vehicle, such as causing the exhaust systems to
operate abnormally or damaging fuel system components or the vehicle's painted
surface.

98
IS250C/350C_U
1-6. Theft deterrent system
Engine immobilizer system
■System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
■Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic object
●If the key is in close proximity to or touching a key to the security system (key
with a built-in transponder chip) of another vehicle
The vehicle's keys have built-in tran sponder chips that prevent the engine
from starting if the key has not been previously registered in the vehicle's
on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
The indicator light flashes after
the “ENGINE START STOP”
switch has been turned OFF to
indicate that the system is oper-
ating.
The indicator light stops flashing
after the “ENGINE START
STOP” switch has been turned
to ACCESSORY or IGNITION
ON mode to indicate that the
system has been canceled.

99
1-6. Theft deterrent system
1
Before driving
IS250C/350C_U
■Certifications for the engine immobilizer system For vehicles sold in the U.S.A.
FCC ID: NI4TMIMB-1
This device complies with part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation. For vehicles sold in Canada
CAUTION
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for com-
pliance could void the user’s authority to operate the equipment.
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If mo dified or removed, the proper operation
of the system cannot be guaranteed.