2015 Lexus IS250 park assist

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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 (ign ition) 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

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7 5 4
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IS350/250_U (OM53C50U)
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8-2. Steps to take in an emergency
If your vehicle needs to be towed ........................................... 458
If you think something is wrong........................................... 464
Fuel pump shut off system ...... 465
If a warning light turns on or a warning buzzer
sounds ......................................... 466
If a warning message is displayed ..................................... 472
If you have a flat tire .................. 486
If the engine will not start ........ 496
If the shift lever cannot be shifted from P ........................... 498
If the electronic key does not operate properly ............. 499
If the vehicle battery is discharged ................................. 502
If your vehicle overheats ......... 506
If the vehicle becomes stuck .............................................509 9-1. Specifications
Maintenance data (fuel, oil level, etc.) ....................512
Fuel information ......................... 522
Tire information........................... 525
9-2. Customization Customizable features .............537
9-3. Initialization Items to initialize......................... 546
Reporting safety defects for U.S. owners ........................ 548
Seat belt instructions for Canadian owners
(in French).................................. 549
SRS airbag instructions for Canadian owners
(in French).................................. 550
What to do if... (Troubleshooting) ............................... 560
Alphabetical index ................................ 5649Vehicle specifications
10For owners
Index
For vehicles with a navigation system, refer to the “NAVIGATION SYSTEM
OWNER’S MANUAL” for information rega rding the equipment listed below.
• Navigation system
• Audio/video system•Intuitive parking assist
•Rear view monitor system

18Pictorial index
IS350/250_U (OM53C50U)
■Switches
Automatic high beam switch*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 176
Windshield wiper de-icer switch
*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 362
Odometer/trip meter and trip meter reset button . . . . . . . . . . . . . . . . . . P. 83
Instrument panel light control swit ches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 84
Rear sunshade switch
*1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 379
Intuitive parking assist switch
*1, 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 214
BSM (Blind Spot Monitor) main switch
*1 . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 252
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782. Instrument cluster
IS350/250_U (OM53C50U)
*1: These lights turn on when the engine switch is turned to IGNITION ON mode to indicate that a system check is being perfor med. They will turn off after the engine is
on, or after a few seconds. There may be a ma lfunction in a system if the lights do not
come on, or turn off. Have the vehi cle inspected by your Lexus dealer.
*2: The light flashes to indicate a malfunction.
The indicators inform the driver of the operating state of the vehicle’s various sys-
tems.
Indicators
Turn signal indicator
( P. 1 7 0 )
(if equipped)
LDA (Lane Departure
Alert) indicator ( P. 2 0 8 )
(U.S.A.)
Headlight indicator
( P. 1 7 3 )

(if equipped)
Intuitive parking assist indi-
cator ( P. 2 1 4 )
(Canada)
Tail light indicator
( P. 1 7 3 ) *1, 2 Slip indicator ( P. 2 4 1 )
Headlight high beam indi-
cator ( P. 1 74 )
*1VSC OFF indicator
( P. 2 4 2 )
(if equipped)
Automatic High Beam indi-
cator ( P. 1 76 )*1, 3
(if equipped)
Pre-collision system warn-
ing light
( P. 2 4 7 )
(if equipped)
Fog light indicator
( P. 1 8 1 )*4, 5
(if equipped)
BSM (Blind Spot Monitor)
outside rear view mirror
indicators ( P. 252)
Cruise control indicator
(  P. 192, 196)
*6Security indicator
( P. 6 9 , 7 1 )
(if equipped)
Dynamic radar cruise con-
trol indicator ( P. 1 9 6 )*7Low outside temperature
indicator ( P. 8 1 )
Cruise control “SET” indica-
tor ( P. 192, 196)
*1Eco Driving Indicator Light
( P. 9 0 )

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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

1474-1. Before driving
4
Driving
IS350/250_U (OM53C50U)
■When starting off on an uphill
The hill-start assist control will activate. (P. 2 4 0 )
■Driving in the rain
●Drive carefully when it is raining, because visibility will be reduced, the windows may
become fogged-up, and th e road will be slippery.
●Drive carefully when it starts to rain, becau se the road surface will be especially slip-
pery.
●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-shi fting implementation to meet driving condi-
tions. It does not indica te sudden acceleration.
●The vehicle is judged to be driving uphill or downhill
●When the accelerator pedal is released
●When the brake pedal is depresse d while sport mode is selected
■Breaking in your new Lexus
To extend the life of the vehicle, observing the followin g precautions is recommended:
●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 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 system
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 bedding down
operation.
■Operating your vehicle in a foreign country
Comply with the relevant vehi cle registration laws and confirm the availability of the cor-
rect fuel. ( P. 5 2 2 )

1514-1. Before driving
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Driving
IS350/250_U (OM53C50U)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When taking a nap in the vehicle
Always turn the engine off. Otherwise, if you accidentally move the shift lever or
depress the accelerator pedal, this could cause an accident or fire due to engine over-
heating. Additionally, if the vehicle is parked in a poorly ventilated area, exhaust gases
may collect and enter the vehicle, leadin g to death or a serious health hazard.
■When braking
●When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this may cause one side of
the vehicle to brake differently than the other side. Also, the parking brake may not
securely hold the vehicle.
●If the power brake assist function does not operate, do not follow other vehicles
closely and avoid hills or sharp turns that require braking.
In this case, braking is st ill possible, but the brake pedal should be depressed more
firmly than usual. Also, the braking distan ce will increase. Have your brakes fixed
immediately.
●Do not pump the brake pedal if the engine stalls.
Each push on the brake pedal uses up the reserve for the power-assisted brakes.
●The brake system consists of 2 individual hy draulic systems; if one of the systems fails,
the other will still operate. In this case, the brake pedal should be depressed more
firmly than usual and the bra king distance will increase.
Have your brakes fixed immediately.
■If the vehicle becomes stuck
Do not spin the wheels excessively when any of the tires is up in the air, or the vehicle is
stuck in sand, mud, etc. This may damage th e driveline components or propel the vehi-
cle forward or backward, causing an accident.

2144-5. Using the driving support systems
IS350/250_U (OM53C50U)
■Types of sensors
■Intuitive parking assist switch
Turns the intuitive parking assist on/
off
When on, the indicator light comes
on to inform the driver that the sys-
tem is operational.
Intuitive parking assist
: If equipped
The distance from your vehicle to near by obstacles when parallel parking or
maneuvering into a garage is measure d by the sensors and communicated via
the multi-information display, Lexus Di splay Audio screen (if equipped) and a
buzzer. Always check the surrounding area when using this system.
Front center sensors
Front corner sensors Rear corner sensors
Rear center sensors1
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