Page 33 of 594
32
1-1. Key information
IS350/250_U
NOTICE
●The surface of the card key may be damaged, or its coating may peel off in the
following situations.
• The card key is carried together with hard objects, such as coins or keys.
• The card key is scraped with a sharp object, such as a tip of mechanical pencil.
• The surface of the card key is wiped with thinners or benzene.
■Carrying the electronic key on your person
When carrying the key, maintain a distance of at least 3.9 in. (10 cm) from any of the
following electrical appliances with their power on. If a distance of 3.9 in. (10 cm) is
not kept, radio waves may be interfered with, causing the key to not function cor-
rectly.• A portable radio, cellular phone, cordless phone or other wireless communi-cation device
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
Page 105 of 594

104
1-7. Safety information
IS350/250_U
CAUTION
■SRS airbag precautions
Observe the following precautions regarding the airbags.
Failure to do so may cause death or serious injury.
●The driver and all passengers in the vehicle must wear their seat belts properly.
The SRS airbags are supplemental devices to be used with the seat belts.
●The SRS driver airbag deploys with considerable force, and can cause death or
serious injury especially if the driver is very close to the airbag. The National
Highway Traffic Safety Administration (“NHTSA”) advises:
Since the risk zone for driver airbag is the first 2 - 3 in. (50 - 75 mm) of inflation,
placing yourself 10 in. (250 mm) from your driver airbag provides you with a
clear margin of safety. This distance is measured from the center of the steering
wheel to your breastbone. If you sit less than 10 in. (250 mm) away now, you can
change your driving position in several ways:
• Move your seat to the rear as far as you can while still reaching the pedalscomfortably.
• Slightly recline the back of the seat. Although vehicle designs vary, many drivers can achieve the 10 in. (250 mm)
distance, even with the driver seat all the way forward, simply by reclining the
back of the seat somewhat. If reclining the back of your seat makes it hard to
see the road, raise yourself by using a firm, non-slippery cushion, or raise the
seat if your vehicle has that feature.
• If your steering wheel is adjustable, tilt it downward. This points the airbag toward your chest instead of your head and neck.
The seat should be adjusted as recommended by NHTSA above, while still main-
taining control of the foot pedals, steering wheel, and your view of the instrument
panel controls.
Page 139 of 594

138
2-1. Driving procedures
IS350/250_U
CAUTION
■When taking a nap in the vehicle
Always turn the engine off. Otherwise, you may accidentally move the shift lever or
depress the accelerator pedal, which could cause an accident or fire due to engine
overheating. Additionally, if the vehicle is parked in a poorly ventilated area, exhaust
gases may collect and enter the vehicle, leading to death or a serious health hazard.
■When braking the vehicle
●When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and 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 downhills or sharp turns that require braking.
In this case, braking is still possible, but it will require more force on the pedal than
usual. Braking distance may also increase.
●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 hydraulic 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 braking distance becomes longer.
Do not drive your vehicle with only a single brake system. Have your brakes fixed
immediately.
■If the vehicle becomes stuck or bogged (AWD models)
Do not spin the wheels recklessly when any of the tires is up in the air, or stuck in
sand or mud, etc. This may damage the drive system components or propel the
vehicle forward (or in another direction) and cause an accident.
Page 160 of 594
159
2-2. Instrument cluster
2
When driving
IS350/250_U
Instrument panel light controlThe brightness of the instrument panel lights can be adjusted. Darker
Brighter
Odometer and trip meter
Odometer: Displays the total distance the vehicle has been driven.
Trip meter: Displays the distance the vehicle has been driven sincethe meter was last reset. Trip meters “A” and “B” can be
used to record and display different distances indepen-
dently.
Speed indicator
When the set speed is reached while driving, this ring-shaped indicator
comes on in yellow. The indicator comes on in red when the vehicle speed
reaches the dangerous range.
Fuel gauge
Displays the quantity of fuel remaining in the tank.
Odometer/trip meter and trip meter reset button
Switches between odometer and trip meter displays. Pushing and holding
the button will reset the trip meter when the trip meter is being displayed.
Page 169 of 594
168
2-2. Instrument cluster
IS350/250_U
Trip informationDisplay items can be switched by
pushing the “DISP” switch.
■ Outside temperature
■ Driving range
Displays the outside air temperature.
The temperature range that can be displayed is from
-40 °F (-40 °C) to 122 °F (50 °C).
When the temperature drops to 37°F (3°C), the dig-
its of the display will flash for 10 seconds.
Displays the estimated maximum distance that can
be driven with the quantity of fuel remaining.
• This distance is computed based on your average fuel consumption. As a result, the actual distance
that can be driven may differ from that displayed.
• When only a small amount of fuel is added to the tank, the display may not be updated.
When refueling, turn the “ENGINE START STOP”
switch off. If the vehicle is refueled without turning
the “ENGINE START STOP” switch off, the display
may not be updated.
Page 191 of 594
190
2-4. Using other driving systems
IS350/250_U
Intuitive parking assist∗
The distance to obstacles measured by the sensors is communicated via
the multi-information display and a buzzer when parallel parking or
maneuvering into a garage. Always check the surrounding area when
using this system.
With navigation system
For vehicles equipped with a navigation system, refer to the separate “Navi-
gation System Owner’s Manual” for further details.
Without navigation system
■ Types of sensors
Front corner sensors
Rear corner sensors
Back sensors
■ Multi-information display ( →P. 1 6 7 )
Front corner sensor opera-
tion
Rear corner sensor operation
Back sensor operation
∗: If equipped
Page 192 of 594
191
2-4. Using other driving systems
2
When driving
IS350/250_U
The distance display and buzzerWhen a sensor detects an obstacle, the direction of and the approximate
distance to the obstacle are displayed and the buzzer sounds.
■ Front corner sensors
Multi-information
displayApproximate distance to obstacleBuzzer
1.6 to 1.3 ft.
(50 to 40 cm)Medium
1.3 to 1.0 ft.
(40 to 30 cm)Fa st
1.0 ft. (30 cm) or lessContinuous
■ Intuitive parking assist switch ( →P. 3 3 9 )
When on, an indicator is dis-
played to inform the driver that
the function is operational.
Page 193 of 594
192
2-4. Using other driving systems
IS350/250_U■
Rear corner sensors
■ Back sensors
Multi-information
displayApproximate distance to obstacleBuzzer
1.6 to 1.2 ft.
(50 to 37.5 cm)Medium
1.2 to 0.8 ft.
(37.5 to 25 cm)Fast
0.8 f t. (25 cm) or lessContinuous
Multi-information displayApproximate distance to obstacleBuzzer
4.9 to 2.0 ft.
(150 to 60 cm)Slow
2.0 to 1.5 ft.
(60 to 45 cm)Medium
1.5 to 1.1 ft.
(45 to 35 cm)Fast
1.1 ft. (35 cm) or lessContinuous