warning Lexus IS F 2008 User Guide

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1-7. Safety information
08_IS F_U_(L/O_0711)■
Unoccupied
■ There is a malfunction in the system
*
1: The system judges a person of adult size as an adult. When a smaller adult sits in the front passenger seat, the system may recognize him/
her as a child depending on his/her physique and posture.
*
2: In the event the front passenger does not wear a seat belt.
*
3: When a larger child who has outgrown a child restraint system sits in the front passenger seat, the system may recognize him/her as an
adult depending on his/her physique or posture.
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF” indi-
cator lightsNot illuminated
SRS warning light Off
Front passenger’s seat belt reminder light
Devices Front passenger airbag
Deactivated
Side airbag on the front
passenger seat
Front passenger knee airbag
Curtain shield airbag in the front passenger sideActivated
Front passenger’s seat belt pretensioner Deactivated
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF” indi-
cator lights “A I R B A G
OFF”
SRS warning light On
Front passenger’s seat belt reminder light Off
Devices Front passenger airbag
Deactivated
Side airbag on the front
passenger seat
Front passenger knee airbag
Curtain shield airbag in the front passenger sideActivated
Front passenger’s seat belt pretensioner

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1-7. Safety information
08_IS F_U_(L/O_0711)
CAUTION
■Front passenger occupant classification system precautions
●If an adult sits in the front passenger seat, the “AIR BAG ON” indicator light is illu-
minated. If the “AIR BAG OFF” indicator is illuminated, ask the passenger to sit
up straight, well back in the seat, feet on the floor, and with the seat belt worn cor-
rectly. If the “AIR BAG OFF” indicator still remains illuminated, either ask the pas-
senger to move to the rear seat, or if that is not possible, move the front passenger
seat fully rearward.
●When it is unavoidable to install the forward-facing child restraint system on the
front passenger seat, install the child restraint system on the front passenger seat
in the proper order. (→P. 9 6 )
●Do not modify or remove the front seats.
●Do not kick the front passenger seat or subject it to severe impact. Otherwise,
the SRS warning light may come on to indicate a malfunction of the detection sys-
tem. In this case, contact your Lexus dealer immediately.
●Child restraint systems installed on the rear seat should not contact the front
seatbacks.
●Do not use a seat accessory, such as a cushion or seat cover, that covers the seat
cushion surface.
●Do not modify or replace the upholstery of the front seat.

When driving2
105
08_IS F_U_(L/O_0711)
2-1. Driving procedures ....... 106Driving the vehicle.................. 106
Engine (ignition) switch .......... 114
Automatic transmission ......... 118
Turn signal lever ....................... 126
Parking brake ........................... 127
2-2. Instrument cluster .......... 128 Gauges and meters ................ 128
Indicators and warning lights ......................................... 132
Multi-information display ..... 135
2-3. Operating the lights and windshield wipers......... 139
Headlight switch...................... 139
Fog light switch ........................ 142
Windshield wipers and washer ..................................... 143
Headlight cleaner switch...... 146 2-4. Using other driving
systems .......................... 147
Cruise control........................... 147
Dynamic radar cruise control ..................................... 150
Intuitive parking assist ........... 160
Driving assist systems ............ 166
PCS (Pre-Collision System) ....... 173
2-5. Driving information........ 176 Cargo and luggage ................. 176
Vehicle load limits .................... 179
Winter driving tips .................. 180
Trailer towing ........................... 182
Dinghy towing.......................... 183

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2-1. Driving procedures
08_IS F_U_(L/O_0711)
■Downshift restrictions warning buzzer
To help ensure safety and driving performance, downshifting operation may some-
times be restricted. In some circumstances, downshifting may not be possible even
when the shift lever or paddle shift switch is operated. (A buzzer will sound twice.)
■When driving with the cruise control or dynamic radar cruise control
Engine braking will not occur during shift range selection in the D position, even
when downshifting to range 7, 6, 5 or 4. (→P. 147, 150)
■Automatic deactivation of snow mode and “Sport” mode
If the “ENGINE START STOP” switch is turned OFF after driving in either snow
mode or “Sport” mode, the mode is automatically deactivated.
■If the shift lever cannot be shifted from P
→P. 3 8 4
■If is not displayed after shifting the shift lever to M
●Within a few seconds of turning the “ENGINE START STOP” switch to ON, the
transmission will not go into M mode if the shift lever is moved to the M position.
This is because a system check is being performed. In this case, wait a moment
and then try moving the shift lever to the M position again.
●If the display does not change to on an occasion other than that
described above, it may indicate a malfunction in the automatic transmission
system. Have your vehicle inspected by your Lexus dealer immediately.
■Automatic gear selection when the vehicle is stopped
●When the vehicle comes to a stop, the transmission will automatically downshift
to allow you to start off in 1st gear.
●When the vehicle is idling at high rpm in order to warm up, and the vehicle is on
a slippery road, the transmission will automatically shift to 2nd gear for stopping
and starting off.

125
2-1. Driving procedures
2
When driving
08_IS F_U_(L/O_0711)
■If the automatic transmission fluid temperature warning light comes on
■AI-SHIFT
The AI-SHIFT automatically selects the optimal gear according to driver perfor-
mance and driving conditions.
The AI-SHIFT automatically operates when the shift lever is in the D position. How-
ever, operating the “-” paddle shift switch will restrict the function’s operation. (Shift-
ing the shift lever to the M position cancels the function.)
CAUTION
■When driving on slippery road surfaces
Be careful of downshifting and sudden acceleration, as this could result in the vehi-
cle skidding to the side or spinning.
If the automatic transmission fluid tempera-
ture warning light comes on while driving,
make sure you return to normal D position
driving and reduce speed by easing off the
accelerator pedal. Stop the vehicle in a safe
place, shift the shift lever to the P position and
let the engine idle until the warning light goes
out.
When the warning light goes out, the vehicle
can be driven again.
If the warning light does not go out after wait-
ing a while, have your vehicle inspected by
your Lexus dealer.

132
2-2. Instrument cluster
08_IS F_U_(L/O_0711)
Indicators and warning lights
The indicator and warning lights on the instrument cluster and center
panel inform the driver of the status of the vehicle’s various systems.
Instrument cluster
The units used on the speedometer and the tachometer gauge display may
differ depending on the model/type.

Center panel

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2-2. Instrument cluster
08_IS F_U_(L/O_0711)
CAUTION
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning light not come on
when you start the engine, this could mean that these systems are not available to
help protect you in an accident, which could result in death or serious injury. Have
the vehicle inspected by your Lexus dealer immediately if this occurs.
■Warning lights
Warning lights inform the driver of malfunctions in any of the vehi-
cle’s systems. ( →P. 3 5 0 )
*: These lights turn on when the “ENGINE START STOP” switch is turned
to IGNITION ON mode to indicate that a system check is being per-
formed. They will turn off after the engine is started, or after a few sec-
onds. There may be a malfunction in a system if a light does not come on,
or if the lights do not turn off. Have the vehicle inspected by your Lexus
dealer.
(U.S.A.)(Canada)(Canada)(U.S.A.)
(Canada)(U.S.A.)(if equipped)(for
driver)(for front
passenger)
******
*******

135
2-2. Instrument cluster
2
When driving
08_IS F_U_(L/O_0711)
Multi-information display
The multi-information display presents the driver with a variety of driving-
related data, including the current outside air temperature.
●Trip information ( →P. 1 3 6 )
Displays driving range, fuel con-
sumption and other cruising-
related information.
●Satellite switch mode display
(→P. 2 3 6 )
This switch is used to configure
various function settings.
●Intuitive parking assist dis-
play (if equipped)
Automatically displayed when
using intuitive parking assist.
●Dynamic radar cruise con-
trol display (if equipped)
(→P. 1 5 0 )
Automatically displayed when
using dynamic radar cruise con-
trol.
●Warning messages
(→P. 360)
Automatically displayed when a
malfunction occurs in one of the
vehicle’s systems.

154
2-4. Using other driving systems
08_IS F_U_(L/O_0711)
Driving in vehicle-to-vehicle distance control mode
This mode employs a radar sensor to detect the presence of vehicles
within 328 ft. (100 m) ahead and to judge the distance between your
vehicle and those vehicles.
Note that vehicle-to-vehicle distance will close when traveling on long
downhill slopes.
Example of constant speed cruising (when there are no vehicles
ahead): When set to 62 mph (100 km/h)
The vehicle travels at the speed set by the driver. The desired vehicle-to-vehi-
cle distance can also be set by operating the vehicle-to-vehicle distance
switch.
Example of deceleration cruising (when the vehicle ahead is driving
slower than the set speed): When fixed speed cruising is set at 62 mph
(100 km/h) and the vehicle ahead is driving at 50 mph (80 km/h)
When a vehicle is detected running ahead of you, in the same lane, the sys-
tem automatically decelerates your vehicle. When a greater reduction in
vehicle speed is necessary, the system applies the brakes. A warning tone
warns you when the system cannot decelerate sufficiently to prevent your
vehicle from closing on the vehicle ahead.

155
2-4. Using other driving systems
2
When driving
08_IS F_U_(L/O_0711)Example of follow-up cruising (when following a vehicle driving slower
than the set speed): When the speed is set to 62 mph (100 km/h) and
the vehicle ahead is driving at 50 mph (80 km/h)
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 ther
e are no longer vehicles driving
slower than the set speed in the lane ahead): Wh en the speed is set to
62 mph (100 km/h) and the vehicle 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 used to indicate a system malfunction or
to alert you to the need for caution while driving. ( →P. 3 6 0 )
■The dynamic radar cruise 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 30 mph (45 km/h) and 85 mph (135
km/h).
■Accelerating
The vehicle can be accelerated normally.