pcs Lexus IS250 2015 Owner's Manual

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IS350/250_U (OM53C50U)
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4-1. Before driving Driving the vehicle ......................146
Cargo and luggage.....................153
Vehicle load limits ........................156
Trailer towing ................................. 157
Dinghy towing .............................. 158
4-2. Driving procedures Engine (ignition) switch .............159
Automatic transmission ............164
Turn signal lever ............................ 170
Parking brake ................................ 172
4-3. Operating the lights and wipers
Headlight switch .......................... 173
Automatic High Beam............... 176
Fog light switch .............................. 181
Windshield wipers and washer .......................................... 182
4-4. Refueling Opening the fuel tank cap ...... 188 4-5. Using the driving
support systems
Cruise control ...............................192
Dynamic radar cruise control ...........................................196
LDA (Lane Departure Alert)........208
Intuitive parking assist ................214
Lexus parking assist monitor.......................................... 221
Driving mode select switch ............................................237
Driving assist systems .............. 240
PCS (Pre-Collision System) ..........246
BSM (Blind Spot Monitor) ............. 252
•The Blind Spot Monitor function .................................... 255
• The Rear Cross Traffic Alert function .........................257
4-6. Driving tips Winter driving tips ..................... 260
4Driving

19Pictorial index
IS350/250_U (OM53C50U)
Driving position memory switches*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 123
Outside rear view mirror switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 135
Door lock switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 105
Power window switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 138
Window lock switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 138
Tire pressure warning reset switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 425
PCS OFF switch
*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 247
*1: If equipped
*2: For vehicles with a navigation system, refer to “NAVIGATION SYSTEM OWNER’S MANUAL”.
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Driving4
IS350/250_U (OM53C50U)
4-1. Before drivingDriving the vehicle ...................... 146
Cargo and luggage .................... 153
Vehicle load limits ....................... 156
Trailer towing ................................. 157
Dinghy towing...............................158
4-2. Driving procedures Engine (ignition) switch ............ 159
Automatic transmission ............ 164
Turn signal lever ........................... 170
Parking brake .................................172
4-3. Operating the lights and wipers
Headlight switch ...........................173
Automatic High Beam ............... 176
Fog light switch.............................. 181
Windshield wipers and washer........................................... 182
4-4. Refueling Opening the fuel tank cap.......188 4-5. Using the driving support
systems
Cruise control .............................. 192
Dynamic radar cruise control .......................................... 196
LDA (Lane Departure Alert) ........208
Intuitive parking assist ................214
Lexus parking assist monitor ..........................................221
Driving mode select switch ........................................... 237
Driving assist systems............... 240
PCS (Pre-Collision System).......... 246
BSM (Blind Spot Monitor) ..... 252
• The Blind Spot Monitor function .................................... 255
• The Rear Cross Traffic Alert function......................... 257
4-6. Driving tips Winter driving tips ..................... 260

2414-5. Using the driving support systems
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Driving
IS350/250_U (OM53C50U)
◆EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn the
steering wheel
◆Adaptive Variable Suspension system (if equipped)
By independently controlling the damping force of the shock absorbers for
each of the 4 wheels according to the road and driving conditions, this system
combines riding comfort with superior steering stability, and helps good vehi-
cle posture. ( →P. 2 3 8 )
◆VDIM (Vehicle Dynamics Integrated Management)
Provides integrated control of the ABS, brake assist, TRAC, VSC, hill-start
assist control, EPS and VGRS (if equipped) systems
Helps to maintain vehicle stability when swerving on slippery road surfaces by
controlling the brakes, engine output, steering assist, and if equipped with
VGRS, steering ratio
◆PCS (Pre-Collision System) (if equipped)
→P. 2 4 6
◆BSM (Blind Spot Monitor) (if equipped)
→P. 2 5 2
The slip indicator light will flash while
the TRAC/VSC systems are operating.
When the TRAC/VSC systems are operating

2464-5. Using the driving support systems
IS350/250_U (OM53C50U)
◆ Pre-collision warning
When a high possibility of a frontal
collision is detected, the pre-colli-
sion system warning light flashes, a
buzzer sounds and a message is
shown on the multi-information dis-
play to urge the driver to take eva-
sive action.
◆Pre-collision brake assist
When there is a high possibility of a frontal collision, the system applies
greater braking force in relation to how strongly the brake pedal is depressed.
The system may not warn the driver usin g a warning light, warning display and
buzzer when the system detects and judges braking operations.
◆Pre-collision braking
When there is a high possibility of a frontal collision, the system warns the
driver using a warning light, warning display and buzzer. If the system deter-
mines that a collision is unavoidable, the brakes are automatically applied to
reduce the collision speed.
◆Suspension control (vehicles with Adaptive Variable Suspension System)
When the system determines that there is a high possibility of a frontal colli-
sion, the operation of Adaptive Variable Suspension System ( →P. 2 4 1 ) o p t i -
mally controls the damping force of the shock absorber.
PCS (Pre-Collision System)∗
∗
: If equipped
When the radar sensor detects the possibility of a frontal collision, brakes are
automatically engaged to lessen impa ct as well as vehicle damage.
The pre-collision system can be turned on and off as necessary by operating
the switch. ( →P. 2 4 7 )

2484-5. Using the driving support systems
IS350/250_U (OM53C50U)
■The pre-collision system is operational when
The PCS OFF switch is not pressed an d the following conditions are met:
●Pre-collision warning:
• Vehicle speed is greater than about 10 mph (15 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehicle running
ahead of you is greater than about 10 mph (15 km/h).
●Pre-collision brake assist:
• The VSC OFF switch is not pressed.
• Vehicle speed is greater than about 19 mph (30 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehicle runningahead of you is greater than about 19 mph (30 km/h).
• The brake pedal is depressed.
●Pre-collision braking:
• The VSC OFF switch is not pressed.
• Vehicle speed is greater than about 10 mph (15 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehicle running ahead of you is greater than about 10 mph (15 km/h).
●Suspension control (vehicles with Adaptive Variable Suspension System):
• Vehicle speed is greater than about 4 mph (5 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehicle runningahead of you is greater than about 19 mph (30 km/h).
■Conditions that may trigger the system ev en if there is no danger of a collision
●When there is an object by the roadside at the entrance to a curve
●When passing an oncoming vehicle on a curve
●When driving over a narrow iron bridge
●When there is a metal object on the road surface
●When driving on an uneven road surface
●When passing an oncoming vehicle on a left-turn
●When your vehicle rapidly closes on the vehicle in front
●When a grade separation/interchange, sign, billboard, or other structure appears to be
directly in the vehicle’s line of travel
●When there is a metal plate in the road in front of the vehicle on a downhill slope
●When climbing a steep hill causes an overhe ad billboard or other metallic structure to
appear directly in the vehicle’s line of travel
●When driving under an overpass
●When an extreme change in vehicle height occurs
●When passing through certain toll gates
●When passing through a tunnel
●When the radar sensor moves off position due to its surrounding area being subjected
to a strong impact
When the system is activated in the situations described above, there is also a possibility
that the brakes will be applied with a force greater than normal.

4678-2. Steps to take in an emergency
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When trouble arises
IS350/250_U (OM53C50U)
Electric power steering system warning lightIndicates a malfunction in the EPS (Electric Power Steering) sys-
tem
→ Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
(If equipped)
Pre-collision system warning light Indicates a malfunction in the PCS (Pre-Collision System)
The warning light will operate as follows, even when the system is
not malfunctioning:
• The light will flash quickly when the system is operating.
(→ P. 2 4 6 )
• The light will turn on when the pre-collision system is disabled. (→ P. 2 4 7 )
• The light will turn on when the VSC (Vehicle Stability Control) system is disabled. ( →P. 2 4 2 )
• The light will flash when the system cannot temporarily be used.
(→ P. 4 8 0 )
→ Have the vehicle inspected by your Lexus dealer immediately.
Slip indicator
Indicates a malfunction in:
• The VSC (Vehicle Stability Control) system;
• The TRAC (Traction Control) system; or
• The hill-start assist control system
The light will flash when the VSC or the TRAC system is operating.
→ Have the vehicle inspected by your Lexus dealer immediately.
Automatic headlight leveling system warning light
Indicates a malfunction in the au tomatic headlight leveling system
→ Have the vehicle inspected by your Lexus dealer immediately.
Open door warning light (warning buzzer)*2
Indicates that a door or the trunk is not fully closed
→ Check that all the doors and the trunk are closed.
Low fuel level warning light
Indicates that remaining fuel is approximately 2.6 gal. (10 L, 2.2
Imp. gal.) or less
→ Refuel the vehicle.
Seat belt reminder light (warning buzzer)*3
Warns the driver and/or front passenger to fasten their seat belts
→ Fasten the seat belt.
If the front passenger’s seat is occupied, the front passenger’s
seat belt also needs to be fastened to make the warning light
(warning buzzer) turn off.
Master warning light
A buzzer sounds and the warning light comes on and flashes to
indicate that the master warning system has detected a malfunc-
tion.
→ P. 4 7 2
Warning lightWarning light/Details/Actions

4768-2. Steps to take in an emergency
IS350/250_U (OM53C50U)
(If equipped)
Indicates that the LDA (Lane Departure Alert) system is
suspended (The camera sensor temperature is higher
than the operation temperature range)A buzzer also sounds.
→ Restart the LDA after driving for a while.
(If equipped)
Indicates that a Blind Spot Monitor sensor or the sur-
rounding area on the bumper is dirty or covered with ice
A buzzer also sounds.
→ Clean the sensor and its surrounding area on the
bumper.
Indicates a malfunction in:
• The cruise control system; or
• The dynamic radar cruise control system (if equipped)
Press the “ON/OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
A buzzer also sounds.
→ Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates a malfunction in the LDA (Lane Departure
Alert) system
A buzzer also sounds.
→ Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates a malfunction in the PCS (Pre-Collision Sys-
tem)
A buzzer also sounds.
→ Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates a malfunction in the BSM (Blind Spot Monitor)
system A buzzer also sounds.
→ Have the vehicle inspected by your Lexus dealer.
Indicates abnormal engine oil pressure
A buzzer also sounds.
→ Immediately stop the vehicle in a safe place and
contact your Lexus dealer.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)

4808-2. Steps to take in an emergency
IS350/250_U (OM53C50U)
*: Refer to the separate “Scheduled Maintenance” or “Owner’s Manual Supplement”for the maintenance interval applicable to your vehicle.
(U.S.A. only)
Indicates that all maintenance is required to correspond
to the driven distance on the maintenance schedule*.
Comes on approximately 5000 miles (8000 km) after
the maintenance data has been reset.
(The indicator will not work properly unless the mainte-
nance data has been reset.)
→ Perform the necessary maintenance. Please reset
the maintenance data after the maintenance is per-
formed ( →P. 4 0 3 )
(If equipped)
Indicates that the Automatic High Beam switch is
pressed while the headlights are in low beam.
→ Turn the high beam on and press the Automatic
High Beam switch again.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-collision brake system
operation is stopped
→Tu r n t h e V S C o n . ( →P. 2 4 2 )
(If equipped)
Indicates that the PCS (Pre-Collision System) is not cur-
rently functional because the grille cover or the sensor is
dirty
→ Check the grille cover and the sensor and clean
them if they are dirty.
Indicates that operation of large electricity consuming
systems such as the air conditioning system are sus-
pended
→Stop using unnecessary electric components to
reduce electricity consumption. Wait a while until
the electric power supply is restored.
(If equipped)
Indicates that the LDA (Lane Departure Alert) system
cannot be used because the vehicle speed is lower than
approximately 32 mph (50 km/h)
→Drive the vehicle at 32 mph (50 km/h) or higher.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)

4958-2. Steps to take in an emergency
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When trouble arises
IS350/250_U (OM53C50U)
CAUTION
■When using the compact spare tire
●Remember that the compact spare tire provided is specifically designed for use with
your vehicle. Do not use your compact spare tire on another vehicle.
●Do not use more than one compact spare tires simultaneously.
●Replace the compact spare tire with a standard tire as soon as possible.
●Avoid sudden acceleration, abrupt steering, sudden braking and shifting operations
that cause sudden engine braking.
■When the compact spare tire is attached
The vehicle speed may not be correctly detected, and the following systems may not
operate correctly:
Also, not only can the following system not be utilized fully, but it may even negatively
affect the drive-train components:
• AWD system
■Speed limit when using the compact spare tire
Do not drive at speeds in excess of 50 mph (80 km/h) when a compact spare tire is
installed on the vehicle.
The compact spare tire is not designed for driving at high speeds. Failure to observe
this precaution may lead to an accident causing death or serious injury.
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their storage
location to reduce the possibility of personal injury during a collision or sudden brak-
ing.
NOTICE
■Driving with tire chains and the compact spare tire
Do not fit tire chains to the compact spare tire.
Tire chains may damage the vehicle body and adversely affect driving performance.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and trans-
mitter, contact your Lexus dealer as the tire pressure warning valve and transmitter
may be damaged if not handled correctly.
• ABS & Brake assist
•VSC
•TRAC
• Cruise control (if equipped)
• Dynamic radar cruise control (if equipped)
•PCS (if equipped)
•EPS • Adaptive Variable Suspension System
(if equipped)
• LDA (Lane Departure Alert) (if equipped)
• VGRS (if equipped)
• Rear view monitor system (if equipped)
• Intuitive parking assist (if equipped)
• Navigation system (if equipped)