2008 Lexus IS F Do-It-Yourself Maintenance /

145
2-3. Operating the lights and windshield wipers
2
When driving
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.
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.

146
2-3. Operating the lights and windshield wipers
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.
■Windshield 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 4 3 )
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.

147
2
When driving
2-4. Using other driving systems
Cruise control (if equipped)
Use the cruise control to maintain a set speed without using the accelera-
tor.
■ Set 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

148
2-4. Using other driving systems
■Cruise control can be set when
●The shift lever is in the D position. However, it cannot be set if any of the ranges 1
through 3 has been selected using the paddle shift switches.
●Vehicle speed is between approximately 25 mph (40 km/h) and 125 mph
(200 km/h).
■Adjusting 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.
■Canceling 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.
Resume
To resume cruise control and
return to the set speed, push the
lever up.

149
2-4. Using other driving systems
2
When driving
■Accelerating
The vehicle can be accelerated normally.
■Automatic cruise control cancellation
The set speed is automatically cancelled in any of the following situations.
●Actual 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.
●Actual vehicle speed is below 25 mph (40km/h)
●VSC is activated
●The shift lever is shifted to the M position.
●When the shift lever is in the D position and any of the ranges 1 through 3 is
selected using the “-” paddle shift switch.
■If 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 malfun ction in the cruise control system. Have
the vehicle inspected by your Lexus dealer.
CAUTION
■To avoid operating the cruise control by mistake
Keep the “ON-OFF” button off when not in use.
■Situations 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.
●In heavy traffic
●On roads with sharp bends
●On winding roads
●On slippery roads, such as thos e covered with rain, ice or snow
●On steep hills

150
2-4. Using other driving systems
Dynamic radar cruise control (if equipped)
Dynamic radar cruise control supplements conventional cruise control
with a vehicle-to-vehicle distance co ntrol. In the vehicle-to-vehicle dis-
tance control mode, the vehicle automa tically accelerates or decelerates
in order to maintain a set following distance from vehicles ahead.
■ Select cruise mode
Selecting vehicle-to-vehicle dis-
tance control mode
Turn the “ON-OFF” button on.
Push the button once more to
deactivate.

151
2-4. Using other driving systems
2
When driving
Selecting conventional con-
stant speed control mode Turn the “ON-OFF” button
on.
Push the button once more to
deactivate.
Vehicle-to-vehicle distance con-
trol mode is always reset when
the “ENGINE START STOP”
switch is switched to IGNITION
ON mode.
Switch to constant speed
control mode.
(Push and hold for approxi-
mately one second.)
■ Driving in the selected cruise control mode
Accelerate or decelerate the
vehicle to the desired speed and
press the lever down to set.

152
2-4. Using other driving systems
■Adjusting the speed setting
Increase speed
Decrease speed
To change the set speed, oper-
ate the lever until the desired set
speed is displayed.
Fine Adjustment (1mph incre-
ments) Momentarily move the
lever in the desired direction
and release.
Course Adjustment (5mph
increments) HOLD the lever in
the desired direction. Coarse
adjustment will continute to
change the set speed approxi-
mately 5mph per second until
the lever is released.
■ Canceling and resuming the speed setting
Cancel
Push the lever towards you to
cancel cruise control.
The setting is also canceled
when the brakes are applied.
Resume
To resume cruise control and