warning Lexus IS250C 2010 Do-It-Yourself Maintenance / LEXUS 2010 IS350C/250C OWNERS MANUAL (OM53A20U)

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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.................................................... 159
2-2. Instrument cluster Gauges and meters ..................... 160
Indicators and warning lights................................................. 166
Multi-information display........... 169
2-3. Operating the lights and windshield wipers
Headlight switch ............................ 174
Fog light switch ............................... 177
Windshield wipers and washer............................................. 178
Headlight cleaner switch ........... 183 2-4. Using other driving systems
Cruise control ................................ 184
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
2When driving

TABLE OF CONTENTSIndex
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5-1. Essential informationEmergency flashers.................... 458
If your vehicle needs to be towed ....................................... 459
If you think something is wrong ............................................. 465
Fuel pump shut off system ........ 466
Event data recorder .................... 467
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds... ........................................ 469
If a warning message is displayed ....................................... 478
If you have a flat tire (vehicles with standard
tires) ................................................ 492
If you have a flat tire (vehicles with run-flat tires) .... 501
If the engine will not start ......... 503
If the shift lever cannot be shifted from P ............................. 505
If you lose your keys ................... 506
If the electronic key does not operate properly ............... 507
If the vehicle battery is discharged .................................... 512 If your vehicle ov
erheats ............ 515
If the vehicle becomes stuck .... 518
If the retractable hardtop does not close............................ 520
If your vehicle has to be stopped in an emergency ..... 530
6-1. Specifications Maintenance data (fuel, oil level, etc.)..................... 532
Fuel information ........................... 548
Tire information.............................. 551
6-2. Customization Customizable features............... 564
6-3. Initialization Items to initialize ........................... 569
Reporting safety defects for U.S. owners........................... 572
Seat belt instructions for Canadian owners
(in French) .................................... 573
5When trouble arises
6Vehicle specifications
7For owners

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Symbols used throughout this manual
Cautions & Notices
Symbols used in illustrations
CAUTION
This is a warning against anything which may cause injury to people if the warning is
ignored. You are informed about what you must or must not do in order to reduce the
risk of injury to yourself and others.
NOTICE
This is a warning against anything which may cause damage to the vehicle or its
equipment if the warning is ignored. You are informed about what you must or must
not do in order to avoid or reduce the risk of damage to your Lexus and its equipment.
Safety symbol
The symbol of a circle with a slash through it means “Do not”,
“Do not do this”, or “Do not let this happen.”
Arrows indicating operationsIndicates the action (pushing, turning, etc.)
used to operate switches and other
devices.
Indicates the outcome of an operation (e.g.
a lid opens).

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1-2. Opening, closing and locking the doors and trunk
■When the vehicle is not driven for extended periods
To prevent theft of the vehicle, do not leave the electronic key within 6 ft. (2 m) of
the vehicle.
■Security feature
If a door is not opened within approximately 60 seconds after the vehicle is
unlocked, the anti-theft system automatically locks the vehicle again.
■Alarms and warning indicators
A combination of exterior and interior alarms as well as warnings displayed on the
multi-information display are used to prevent theft of the vehicle and unforeseeable
accidents resulting from erroneous operation. Take appropriate measures in
response to any warning indications on the multi-information display. ( P. 4 7 8 )
The following table describes circumstances and correction procedures when only
alarms are sounded.
AlarmSituationCorrection procedure
Exterior alarm
sounds once for 2
seconds
Tried to lock the doors using
the entry function while the
electronic key is still inside
the passenger compartmentRetrieve the electronic
key from the passenger
compartment and lock
the doors again.
Closed the trunk while the
electronic key is still inside
and both side doors are
lockedRetrieve the electronic
key from the trunk and
close the trunk lid.
Exterior alarm
sounds once for 60
seconds
Tried to exit the vehicle with
the electronic key and lock
the doors without first turning
the “ENGINE START STOP”
switch OFFTu r n t h e “ E N G I N E
START STOP” switch
OFF and lock the doors
again.
Exterior alarm
sounds once for 10
secondsTried to lock the vehicle using
the entry function while a
door is openClose all of the doors
and lock the doors
again.

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1-2. Opening, closing and locking the doors and trunk
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Before driving
*: Vehicles with an automatic transmission only
If the electronic key is removed from the vehicle without any of the doors being
opened, such as through the open retractable hardtop, these warning functions
may not operate properly.
■If the smart access system with push-button start does not operate properly
●Locking and unlocking the doors and trunk: Use the mechanical key.
( P. 5 0 7 )
●Starting the engine: P. 5 0 9
■When the electronic key battery is fully depleted
P. 4 3 1
■Customization that can be configured at Lexus dealer
It is possible to deactivate the operation signals of the system, such as the emer-
gency flashers. (Customizable features P. 5 6 4 )
AlarmSituationCorrection procedure
Interior alarm
sounds continu-
ously
*
Tried to open the door and
exit the vehicle without shift-
ing the shift lever to P
Shift the shift lever to P.
Interior alarm pings
continuously
Switched to ACCESSORY
mode while the driver's door
is open (Opened the driver's
door when the “ENGINE
START STOP” switch is in
ACCESSORY mode.)
Close the driver's door.
Turned the “ENGINE START
STOP” switch OFF while the
driver's door is open
Close the driver's door.

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1-2. Opening, closing and locking the doors and trunk
■Certification for the smart access system with push-button startFor vehicles sold in the U.S.A.
FCC ID: NI4TMLF-1
NOTE:
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.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
For vehicles sold in Canada
NOTE:
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.
NOTE:
L’utilisation de ce dispositif est autori sée seulement aux deux conditions suivantes:
(1) il ne doit pas produire de brouillage et (2) l’utilisateur du dispositif doit être prêt à
accepter tout brouillage ra dioélectrique reçu, même si ce brouillage est suscepti-
ble de compromettre le fonc tionnement du dispositif.

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1-2. Opening, closing and locking the doors and trunk
■Certification for wireless remote controlFor vehicles sold in the U.S.A.
FCC ID: HYQ14AAB FCC ID: HYQ14ABK
FCC ID: HYQ14ABB FCC ID: HYQ14ABS
FCC ID: HYQ13BZH FCC ID: HYQ13BZW
NOTE:
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.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
For vehicles sold in Canada
NOTE:
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.
NOTE:
L’utilisation de ce dispositif est autori sée seulement aux deux conditions suivantes:
(1) il ne doit pas produire de brouillage et (2) l’utilisateur du dispositif doit être prêt à
accepter tout brouillage ra dioélectrique reçu, même si ce brouillage est suscepti-
ble de compromettre le fonc tionnement du dispositif.

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1-3. Adjustable components (seats, mirrors, steering wheel)
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Before driving
CAUTION
Observe the following precautions to reduce the risk of injury in the event of sudden
braking, sudden swerving or an accident.
Failing to do so may cause death or severe injury.
■Wearing a seat belt
●Ensure that all passengers wear a seat belt.
●Always wear a seat belt properly.
●Each seat belt should be used by one person only. Do not use a seat belt for more
than one person at once, including children.
●Lexus recommends that children be seated in the rear seat and always use a seat
belt and/or an appropriate child restraint system.
●Do not recline the seat any more than necessary to achieve a proper seating
position. The seat belt is most effective when the occupants are sitting up straight
and well back in the seats.
●Do not wear the shoulder belt under your arm.
●Always wear your seat belt low and snug across your hips.
■Child restraint lock function belt precaution
Do not allow children to play with the child restraint lock function belt. If the belt
becomes twisted around a child’s neck, it will not be possible to pull the belt out
leading to choking or other se rious injuries that could result in death. If this occurs
and the buckle cannot be unfastened, scissors should be used to cut the belt.
■Seat belt pretensioners
●Do not place anything, such as a cushion, on the front passenger’s seat. Doing so
will disperse the passenger’s weight, wh ich prevents the sensor from detecting
the passenger’s weight properly. As a resu lt, the seat belt pretensioner for the
front passenger’s seat may not activ ate in the event of a collision.
●If the pretensioner has activated, the SRS warning light will come on. In that case,
the seat belt cannot be used again and must be replaced at your Lexus dealer.

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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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1-6. Theft deterrent system
■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
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.
L’utilisation de ce dispositif est autori sée seulement aux deux conditions suivantes:
(1) il ne doit pas produire de brouillage et (2) l’utilisateur du dispositif doit être prêt à
accepter tout brouillage ra dioélectrique reçu, même si ce brouillage est suscepti-
ble de compromettre le fonc tionnement du dispositif.
CAUTION
FCC WARNING:
Changes or modifications no t expressly approved by the party responsible for com-
pliance could void the user’s authority to operate the equipment.
NOTICE
■To ensure the system correctly
Do not modify and remove the system. If modified or removed, the proper opera-
tion of the system cannot be guaranteed.