lights Lexus IS250 2008 Using the air conditioning system and defogger / LEXUS 2008 IS250 (OM53699U) Owner's Guide

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2-3. Operating the lights and windshield wipers
■The windshield wiper and washer can be operated when
The “ENGINE START STOP” switch is in IGNITION ON mode.
■Effects of vehicle speed on wiper operation
Vehicle speed affects the following even when the wipers are not in “AUTO” mode.
●Intermittent wiper interval (“INT” mode)
●Wiper operation when the washer is being used (delay until drip prevention
wiper sweep occurs)
With “LO” selected, wiper operation will be switched from low speed to intermit-
tent wiper operation only when the vehicle is stationary.
(However, the mode cannot be switched wh en the adjustment dial for the intermit-
tent wiper interval is se t to the lowest setting.)
■Rain-sensing windshield wipers (if equipped)
With “AUTO” selected, the wipers will operate automatically when
the sensor detects falling rain. The system automatically adjusts
wiper timing in accordance with rain volume and vehicle speed.
Sensor sensitivity (low)
Sensor sensitivity (high)
Rain-sensing wiper operation
Low speed wiper operation
High speed wiper operation
Temporary operation
Wash/wipe operation
Wipers operate automatically.
(After operating several times,
the wipers operate one more
time after a short delay to pre-
vent dripping.)

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2-3. Operating the lights and windshield wipers
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When driving
■Rain drop sensor (vehicles equipped with the rain-sensing windshield wipers)
■Outside rear view mirror defogger activa tion linked to windshield wiper opera-
tion
The outside rear view mirror defogger au tomatically turns on when you operate the
windshield wipers.
■If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the wind-
shield washer fluid reservoir.
■Customization that can be configured at Lexus dealer
Settings (e.g. drip prevention function) can be changed. (Customizable features
 P. 4 3 6 )
CAUTION
■Caution regarding the use of windshield wipers in “AUTO” mode
The windshield wipers may operate unexpectedly if the sensor is touched or the
windshield is subject to vibration in “AUT O” mode. Take care that your fingers or
anything else do not become caught in the windshield wipers.
The sensor judges the amount of raindrops.

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2-3. Operating the lights and windshield wipers
NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■When there is no washer fluid spray from the nozzle
Damage to the washer fluid pump may be caused if the lever is pulled toward you
and held continually.
■When using an automatic car wash
Set the wiper switch to “OFF”.
If the wiper switch is in “AUTO”, the wipers may operate and the wiper blades may
be damaged.

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2-3. Operating the lights and windshield wipers
2
When driving
Headlight cleaner switch (if equipped)
■The headlight cleaner can be operated when
When the “ENGINE START STOP” switch is in IGNITION ON mode and the
headlight switch is turned on.
NOTICE
■When the washer fluid tank is empty
Do not use this function when the washer fluid tank is empty. This may cause the
washer fluid pump to overheat.
Washer fluid can be sprayed on the headlights.
Press the switch to clean the
headlights.

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2-4. Using other driving systems
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When driving
The system continues follow-up cruising while adjusting for changes in the
speed of the vehicle ahead in order to maintain the vehicle-to-vehicle dis-
tance set by the driver.
Example of acceleration (when there are no longer vehicles driving
slower than the set speed in the lane ahead): When the speed is set to
62 mph (100 km/h) and the vehicl e ahead driving at 50 mph (80
km/h) is out of the lane
When the vehicle ahead of you executes a lane change, the system slowly
accelerates until the set vehicle speed is reached. The system then returns to
fixed speed cruising.
■Dynamic radar cruise control warning lights, messages and buzzers
Warning lights, messages and buzzers are us ed to indicate a system malfunction or
to alert you to the need for caution while driving. ( P. 3 6 9 )
■The dynamic radar cruise can be set when
●The shift lever is in D or the 4, 5 or 6 range of S.
●Vehicle speed is between approximatel y 30 mph (45 km/h) and 85 mph (135
km/h).
■Accelerating
The vehicle can be accelerated normally.
■Automatically canceling vehicle-to-vehicle distance control
Vehicle-to-vehicle distance control driving is automatically canceled in the follow-
ing situations.
●Vehicle speed falls below 25 mph (40 km/h)
●VSC is activated
●The sensor cannot operate correctly because it is covered in some way.
●The windshield wipers are operating at high speed.
●The “ECT SNOW” switch is set to snow mode.
If vehicle-to-vehicle distance control driving is automatically canceled for any other
reason, there may be a malfunction in the system. Contact your Lexus dealer.

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2-4. Using other driving systems
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When drivingWhen the VSC/TRAC/hill-start assist control systems are operating
If the vehicle is in danger of slip-
ping, rolling backwards when
starting on an incline, or if the rear
wheels (2WD) or 4 wheels
(AWD) spin, the slip indicator light
flashes to indicate that the VSC/
TRAC/hill-start assist control sys-
tems have been engaged.
A buzzer (intermittent) sounds to
indicate that VSC is operating.
The stop lights and high mounted
stoplight turn on when the hill-start
assist control system is operating.
■VDIM (Vehicle Dynamics Integrated Management) (IS350)
Provides integrated control of the ABS, brake assist, TRAC, VSC, hill-start
assist control, and EPS systems.
Maintains vehicle stability when swerving on slippery road surfaces by
controlling the brakes and engine output.
■ PCS (Pre-Collision System) (if equipped)
 P. 1 76

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2-4. Using other driving systems
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When driving
■The pre-collision system is operational when
●Seat belt (linked to the radar sensor)
• Vehicle speed is above 3 mph (5 km/h).
• The speed at which your vehicle is approaching the obstacle or oncomingvehicle exceeds 18 to 24 mph (30 to 40 km/h).
• The front occupants are wearing a seat belt.
●Seat belts (linked to brake operation)
• Vehicle speed exceeds 9 mph (15 km/h).
• The system detects sudd en braking or skidding.
• The front occupants are wearing a seat belt.
●Brake Assist
• Vehicle speed is above 18 mph (30 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehicle is greater than 18 to 24 mph (30 to 40 km/h).
• The brake pedal is depressed.
■Conditions that may trigger the system even if there is no danger of 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 the system is activated in the situations described above there is also a possi-
bility that the seat belts will retract quickly and the brakes will be applied with a force
greater than normal. When the seat belt is locked in the retracted position, stop the
vehicle in a safe place, release the seat belt and refasten.
■When there is a malfunction in the system
Warning lights and/or warning mess ages will turn on or flash. (P. 360, 369)

Interior features3
191
3-1. Using the air conditioning system
and defogger ................ 192
Automatic air conditioning
system ...................................... 192
Rear window and outside rear view mirror
defoggers ............................. 200
3-2. Using the audio system ........................... 201
Audio system type................... 201
Using the radio....................... 204
Using the CD player ............... 211
Playing back MP3 and WMA discs............................. 217
Optimal use of the audio system ..................................... 225
Using the AUX adapter ...... 228
Using the steering wheel audio switches ...................... 229
3-3. Using the interior lights .............................. 231
Interior lights list ...................... 231
• Interior lights ........................ 234
• Personal lights ...................... 234 3-4. Using the storage
features ........................ 236
List of storage features......... 236
• Glove box .............................. 236
• Console boxes ..................... 237
• Overhead console.............. 238
• Cup holders .......................... 239
• Bottle holders/ door pockets ......................... 241
3-5. Other interior features ........................ 242
Sun visors ................................. 242
Vanity mirror ........................... 243
Clock ......................................... 244
Satellite switches ................... 245
Ashtrays.................................... 248
Cigarette lighter .................... 249
Power outlet ............................ 250
Seat heaters ............................. 251
Seat heaters and
ventilators ............................. 253
Armrest .................................... 255
Rear sunshade ........................ 256
Trunk storage extension ...... 258
Coat hooks .............................. 259
Floor mat .................................. 260
Trunk features ........................... 261
Garage door opener ............ 264
Compass................................... 269

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3
Interior features
3-3. Using the interior lights
Interior lights list
Your Lexus is equipped with the illuminated entry system to assist in enter-
ing the vehicle. Owing to the function of the system, the lights shown in the
following illustration automatically turn on/off according to the presence of
the electronic key, whether the doors are locked/unlocked, whether the
doors are opened/closed, and the “ENGINE START STOP” switch mode.
Front personal lights ( P. 2 3 4 )
Front interior light ( P. 2 3 4 )
Front overhead courtesy light
Rear personal lights ( P. 2 3 4 )
Rear interior light
Rear overhead courtesy light
Shift lever lighting (when “ENG INE START STOP” switch is in
ACCESSORY or IGNITION ON mode)
Front foot well lighting

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3-3. Using the interior lights
Front door courtesy lighting
Front scuff lighting (if equipped)
Outer foot lights
Turning the instrument panel light control knob fully to the left disables the
shift lever lighting and front foot well lighting.