LEXUS IS250 2016 Owners Manual

161
2-3. Operating the lights and windshield wipers
2

When driving
Wash/wipe operation
Wipers operate automatically.
(After operating several times,
the wipers operate one more
time after a short delay to pre-
vent dripping.)
Rain-sensing windshield wipers
With “AUTO” selected, the wipers will operate automatically when
the sensor detects falling rain. The system automatically adjusts
wiper timing in accordance with rain.
Rain-sensing wiper operation
Low speed wiper operation
High speed wiper operation
Temporary operation

162
2-3. Operating the lights and windshield wipers
nThe windshield wiper and washer can be operated when
The “ENGINE START STOP” switch is in IGNITION ON mode.
nEffects of vehicle speed on wiper operation
Vehicle speed affects the following even when the wipers are not in “AUTO” mode.
lIntermittent wiper interval
lWiper operation when the washer is being used (delay until drip prevention
wiper sweep occurs)
Low speed wiper operation selected, wiper operation will be switched from low
speed to intermittent wiper operation only when the vehicle is stationary.
(However, the mode cannot be switched when the adjustment dial for the intermit-
tent wiper interval is set to the lowest setting.)
Sensor sensitivity (high)
Sensor sensitivity (low)
Wash/wipe operation
Wipers operate automatically.
(After operating several times,
the wipers operate one more
time after a short delay to pre-
vent dripping.)

163
2-3. Operating the lights and windshield wipers
2

When driving
nRain drop sensor (vehicles with the rain-sensing windshield wipers)
nOutside rear view mirror defogger activation linked to windshield wiper opera-
tion
The outside rear view mirror defogger automatically turns on when you operate the
windshield wipers.
nIf 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.
nCustomization that can be configured at Lexus dealer
Settings (e.g. drip prevention function) can be changed.
(Customizable features →P. 4 6 1 )
CAUTION
nCaution 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 “AUTO” mode. Take care that your fingers or
anything else do not become caught in the windshield wipers.
The sensor judges the amount of raindrops.

164
2-3. Operating the lights and windshield wipers
NOTICE
nWhen the windshield is dry
Do not use the wipers, as they may damage the windshield.
nWhen a nozzle becomes blocked
Do not try to clear it with a pin or other object. The nozzle will be damaged.
nWhen 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.

165
2-3. Operating the lights and windshield wipers
2

When driving
Headlight cleaner switch∗
nThe headlight cleaner can be operated when
When the “ENGINE START STOP” switch is in IGNITION ON mode and the
headlight switch is turned on.
nWindshield washer linked operation
When the windshield washer is operated with the “ENGINE START STOP” switch
in IGNITION ON mode and the headlights on, the headlight cleaner will operate
once. (→P. 1 6 0 )
NOTICE
nWhen 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.
∗: If equipped

166
2-4. Using other driving systems
Cruise control∗
Use the cruise control to maintain a set speed without using the accelera-
tor.
Indicator
Cruise control switch
nSet the vehicle speed
Turn the “ON-OFF” button on.
Push the button once more to
deactivate the cruise control.
Accelerate or decelerate to the
desired speed and press the
lever down to set the cruise
control speed.
STEP1
STEP2
∗: If equipped

167
2-4. Using other driving systems
2

When driving
nAdjusting the speed setting
Increase speed
Decrease speed
Hold the lever until the desired
speed setting is obtained.
Fine adjustment of the set
speed (approximately 1.0 mph
[1.6 km/h]) can be made by
lightly pressing the lever up or
down and releasing it.
nCanceling and resuming regular acceleration
Cancel
Push the lever towards you to
cancel cruise control.
The speed setting is also can-
celed when the brakes are
applied or the clutch (manual
transmission) is depressed.
Resume
To resume cruise control and
return to the set speed, push the
lever up.

168
2-4. Using other driving systems
nCruise control can be set when
lVehicles with an automatic transmission: the shift lever is in the D position or S
position. However, it cannot be set if any of the ranges 1 through 3 has been
selected.
lVehicle speed is between approximately 25 mph (40 km/h) and 125 mph
(200 km/h).
nAccelerating
The vehicle can be accelerated normally.
nAutomatic cruise control cancellation
The set speed is automatically cancelled in any of the following situations.
lActual vehicle speed falls more than 10 mph (16 km/h) below the preset vehicle
speed
At this time, the memorized set speed is not retained.
lActual vehicle speed is below 25 mph (40km/h)
lVSC is activated
nIf the cruise control indicator light flashes
Turn the “ON-OFF” button off once, and then reactivate the system.
If the cruise control speed cannot be set or if the cruise control cancels immediately
after being activated, there may be a malfunction in the cruise control system. Have
the vehicle inspected by your Lexus dealer.

169
2-4. Using other driving systems
2

When driving
CAUTION
nTo avoid operating the cruise control by mistake
Keep the “ON-OFF” button off when not in use.
nSituations unsuitable for cruise control
Do not use cruise control in any of the following situations.
Doing so may result in control of the vehicle being lost and could cause serious or
fatal accident.
lIn heavy traffic
lOn roads with sharp bends
lOn slippery roads, such as those covered with rain, ice or snow
lOn steep hills
lOn winding roads

170
2-4. Using other driving systems
Dynamic radar cruise control∗
Dynamic radar cruise control supplements conventional cruise control
with a vehicle-to-vehicle distance control. In the vehicle-to-vehicle dis-
tance control mode, the vehicle automatically accelerates or decelerates
in order to maintain a set following distance from vehicles ahead.
Indicator
Display
Distance switch
Cruise control switch
∗: If equipped