automatic transmission Lexus IS250 2007 Basic Functions / LEXUS 2007 IS350/250 (OM53578U) Owner's Guide

108
2-1. Driving procedures
Parking brake
NOTICE
■Before driving
Fully release the parking brake.
Driving the vehicle with the parking brake set will lead to brake components over-
heating, which may affect braking performance and increase brake wear.
Automatic transmission
Sets the parking brake
*
(Depressing the pedal again
releases the parking brake.)
*: Fully depress the parking
brake pedal with your left
foot while depressing the
brake pedal with your right
foot.
Manual transmission
Sets
the parking brake
Fully set the parking brake while
depressing the brake pedal.
Releases the parking
brake
CANADA
U.S.A.
CANADA
U.S.A.

116
2-2. Instrument cluster
■Indicators
The indicators inform the driver of the operating state of the vehi-
cle’s various systems.
Turn signal indicator
(P. 1 0 7 )
(vehicles with
an automatic
transmission)
ECT SNOW indicator
(P. 1 0 2 )
Headlight high beam indi-
cator (P. 122)
(vehicles with
a manual
transmission)
ETCS SNOW indicator
(P. 1 0 5 )
(U.S.A.)
Headlight indicator
(P. 122)
(vehicles with
an automatic
transmission)
ECT PWR indicator
(P. 1 0 2 )
(CANADA)
Tail light indicator
(P. 122) Cruise control indicator
(P. 1 3 0 )
Front fog light indicator
(P. 1 2 5 )
(if equipped)
AFS OFF indicator light
(P. 1 2 3 )
(vehicles with an automatic trans-
mission)
Shift position and shift range indica-
tors (
P. 1 0 1)
(if equipped)
Lexus parking assist-sen-
sor indicator (P. 1 4 2 )
Slip indicator (P. 1 4 9 )
VSC OFF indicator
(P. 1 5 0 )
SRS airbag on-off indica-
tor (P. 7 2 )
*
*
*
*

121
2-2. Instrument cluster
2
When driving
■Gear position display
(vehicles with an automatic transmission only)
Indicates the current gear, and the range of gears
that is available when the shift lever is in the S or D
position. the gear range is shown by the number of
dots () and the current gear is shown as a number.
The transmission automatically selects the gears
within the driver selected gear range.
In the illustration to the left, a range of 6 available gears
(1 through 6) has been selected by the driver. (The shift
lever is in the D or S position with 6 ranges enabled) It is
possible for the transmission to automatically select
between all 6 of the gears. In this case, the transmission
has selected third gear.
■System check display
After switching the engine switch to IG-ON mode, CHECK is displayed while sys-
tem operation is checked. When the system check is complete, COMPLETED is
displayed before returning to the normal screen.
CAUTION
■The information display at low temperatures
Allow the interior of the vehicle to warm up before using the liquid crystal informa-
tion display. At extremely low temperatures, the information display monitor may
respond slowly, and display changes may be delayed.
For example, there is a lag between the driver's shifting and the new gear number
appearing on the display. This lag could cause the driver to downshift again, causing
rapid and excessive engine braking and possibly an accident resulting in personal
death or injury.

131
2-4. Using other driving systems
2
When driving
■Cruise control can be set when
●The shift lever is in the D or 4,5, or 6 range of S. (vehicles with an automatic
transmission)
●Vehicle speed is between approximately 25 mph (40 km/h) and 125 mph
(200 km/h).
■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
■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 or the clutch (manual
transmission) is depressed.
Resume
To resume cruise control and
return to the set speed, push the
lever up.

148
2-4. Using other driving systems
Driving assist systems
To help enhance driving safety and performance, the following systems
operate automatically in response to various driving situations. Be aware,
however, that these systems are supplementary and should not be relied
upon too heavily when operating the vehicle.
■ABS (Anti-lock Brake System)
Restrains the vehicle from slipping when driving on slick road surfaces or
in the event of sudden braking.
■BA (Brake Assist)
Generates an increased level of braking force after the brake pedal is
depressed, when the system detects a panic stop situation.
■VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning on
slippery road surfaces.
■TRAC (Traction Control)
Maintains drive power and prevents the rear wheels (2WD models) or all
wheels (4WD models) from spinning when starting the vehicle or acceler-
ating on slippery roads.
■Hill-start assist control (vehicles with an automatic transmission)
Prevents the vehicle from rolling backwards when starting on an incline or
slippery slope.
■EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn
the steering wheel.

153
2-4. Using other driving systems
2
When driving
CAUTION
■TRAC may not operate effectively when
Directional control and power may not be achievable while driving on slippery road
surfaces, even if the TRAC system is operating.
Do not drive the vehicle in conditions where stability and power may be lost.
■If hill-start assist control does not operate effectively
(vehicles with an automatic transmission)
The hill-start assist control may not operate effectively on steep inclines and roads
covered in ice.
■Replacing tires
Make sure that all tires are of the same size, brand, tread pattern and total load
capacity. In addition, make sure that the tires are inflated to the recommended tire
pressure level.
The ABS and VSC systems will not function correctly if different tires are fitted on
the vehicle.
Contact your Lexus dealer for further information when replacing tires or wheels.
■Handling of tires and suspension
Using tires with any kind of problem or modifying the suspension will affect the driv-
ing assist systems, and may cause the system to malfunction.

162
2-5. Driving information
Selecting snow chains
Snow chains can be mounted on 16- and 17-inch tires. They cannot be
mounted on 18-inch tires. Use the correct snow chain size when mount-
ing the snow chains. Chain size is regulated for each tire sizes.
Side chain
(0.12 in. [3 mm] in diameter)
Cross chain
(0.16 in. [4 mm] in diameter)
Regulations on the use of snow chains
●Regulations regarding the use of tire chains vary according to location
and type of road. Always check local regulations before installing
chains.
●Install the chains on the rear tires.
●Retighten the chains after driving 1 /4 - 1 /2 mile (0.5 - 1.0 km).
■When driving the vehicle
Accelerate the vehicle slowly and drive at a reduced speed suitable to
road conditions.
■When parking the vehicle
Park the vehicle and move the shift lever to P (automatic transmis-
sion) or R (manual transmission) without setting the parking brake.
The parking brake may freeze up, preventing it from being released.

166
2-5. Driving information
Dinghy towing (vehicles with an automatic transmission)
NOTICE
■To avoid serious damage to your vehicle
Do not tow your vehicle with four wheels on the ground.
Your vehicle is not designed to be dinghy towed (with 4 wheels on the
ground) behind a motor home.

228
3-5. Other interior features
Seat heaters (if equipped)
■The seat heaters can be used when
The engine switch is in IG-ON mode.
■When not in use
Set the dial to 0. The indicator light turns off.
Heats the seats
The indicator light comes on.
The higher the number, the
warmer the seats become.
Vehicles with an automatic
transmission
Heats the seats
The indicator light comes on.
The higher the number, the
warmer the seats become.
Vehicles with a manual
transmission
Driver’s
seatFront
passenger’s
seat
Driver’s
seatFront
passenger’s
seat

230
3-5. Other interior features
Seat heaters and ventilators (if equipped)
■The seat heaters and ventilators can be used when
The engine switch is in IG-ON mode.
■When not in use
Set the dial to 0. The indicator light turns off.
The seat heaters and ventilators heat the seats and maintain good airflow
by blowing air from the seats.
Heats the seats
The indicator light (red) comes
on.
The higher the number, the
warmer the seats become.
Blows air from the seats
The indicator light (green)
comes on.
The higher the number, the
stronger the airflow becomes.
Heats the seats
The indicator light (red) comes
on.
The higher the number, the
warmer the seats become.
Blows air from the seats
The indicator light (green)
comes on.
The higher the number, the
stronger the airflow becomes.
Driver’s
seatFront
passenger’s
seat
Vehicles with an automatic
transmission
Driver’s
seatFront
passenger’s
seat
Vehicles with a manual trans-
mission