2010 Lexus IS250 brake

133
2-1. Driving procedures
2
When driving
NOTICE
■If you hear a squealing or scraping noise (brake pad wear limit indicators)
Have your Lexus dealer check and replace the brake pads as soon as possible.
Rotor damage can result if the pads are not replaced when needed.
Front brake only: Moderate levels of brake pad and disc wear allow enhanced front
braking power. As a result, the discs may wear more quickly than conventional
brake discs. Therefore, when replacing the brake pads, Lexus recommends that you
also have the thickness of the discs measured.
It is dangerous to drive the vehicle when the wear limits of the brake pads and/or
those of the brake discs are exceeded.
■If you get a flat tire while driving
A flat or damaged tire may cause the following situations. Hold the steering wheel
firmly and gradually press the brake pedal to slow down the vehicle.
●It may be difficult to control your vehicle.
●The vehicle will make abnormal sounds.
●The vehicle will behave abnormally.
Replace a flat tire with a new one. (P. 4 9 4 )
■When encountering flooded roads
Do not drive on a road that has flooded after heavy rain etc. Doing so may cause the
following serious damage to the vehicle.
●Engine stalling
●Short in electrical components
●Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle is flooded, be sure to
have your Lexus dealer check the following.
●Brake function
●Changes in quantity and quality of oil and fluid used for the engine, transmission,
transfer (AWD vehicles), differential, etc.
●Lubricant condition for the propeller shaft (AWD vehicles), bearings and suspen-
sion joints (where possible) and the function of all joints, bearings, etc.

134
2-1. Driving procedures
Engine (ignition) switch
Performing the following operations when carrying the electronic key on
your person starts the engine or changes “ENGINE START STOP” switch
modes.
■Starting the engine
Automatic transmission
Check that the parking brake is set.
Check that the shift lever is set in P.
Sit in the driver’s seat and firmly depress the brake pedal.
The “ENGINE START STOP” switch indicator turns green.
Press the “ENGINE START
STOP” switch.
The engine will crank until it
starts or for up to 30 seconds,
whichever is less.
Continue depressing the brake
pedal until the engine is com-
pletely started.
The engine can be started from
any mode.
STEP1
STEP2
STEP3
STEP4

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2-1. Driving procedures
2
When driving
Manual transmission
Check that the parking brake is set.
Check that the shift lever is set in N.
Firmly depress the clutch pedal.
The “ENGINE START STOP” switch indicator turns green.
Press the “ENGINE START
STOP” switch.
The engine will crank until it
starts or for up to 30 seconds,
whichever is less.
Continue depressing the clutch
pedal until the engine is com-
pletely started.
The engine can be started from
any mode.
STEP1
STEP2
STEP3
STEP4

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2-1. Driving procedures
■Changing “ENGINE START STOP” switch mode
Modes can be changed by pressing the “ENGINE START STOP”
switch with the brake pedal (vehicles with an automatic transmission)
or clutch pedal (vehicles with a manual transmission) released. (The
mode changes each time the switch is pressed.)
OFF*
The emergency flashers can be
used.
ACCESSORY mode
Some electrical components
such as the audio system can be
used.
The “ENGINE START STOP”
switch indicator turns amber.
IGNITION ON mode
All electrical components can
be used.
The “ENGINE START STOP”
switch indicator turns amber.
*: If the shift lever is in a position
other than P when turning off
the engine, the “ENGINE
START STOP” switch will be
turned to ACCESSORY mode,
not to OFF. (vehicles with auto-
matic transmission)

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2-1. Driving procedures
CAUTION
■When starting the engine
Always start the engine while sitting in the driver’s seat. Do not press the accelera-
tor while starting the engine under any circumstances.
Doing so may cause an accident resulting in death or serious injury.
■Stopping the engine in an emergency
If you want to stop the engine in an emergency while driving the vehicle, push and
hold the “ENGINE START STOP” switch for more than 3 seconds.
However, do not touch the "ENGINE START STOP" switch while driving except in
an emergency. Turning the engine off while driving will not cause loss of steering or
braking control, but the power assist to these systems will be lost. This will make it
more difficult to steer and brake, so you should pull over and stop the vehicle as
soon as it is safe to do so.
NOTICE
■To prevent battery discharge
Do not leave the “ENGINE START STOP” switch in ACCESSORY or IGNITION
ON mode for long periods without the engine running.
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have the engine
checked immediately.

139
2-1. Driving procedures
2
When driving
Automatic transmission
Select a shift position appropriate for the driving conditions.
■Shifting the shift lever
While the “ENGINE START STOP” switch is in IGNITION
ON mode, depress the brake pedal and move the shift lever.
■Shift position uses
*: To improve fuel consumption and reduce noises, set the shift lever in the D
position for normal driving.
Shift positionFunction
PParking the vehicle or starting the engine
RReversing
NNeutral
DNormal driving*
SS mode driving (P. 1 4 2 )

: If equipped

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2-1. Driving procedures
Parking brake
■Usage in winter time
See “Winter driving tips” for parking brake usage in winter time. (P. 2 1 0 )
Vehicles with an 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.
Vehicles with a manual transmission
Sets
the parking brake
Fully set the parking brake while depressing the brake pedal.
Releases the parking brake
Slightly raise the lever and lower it completely while pressing the button.
Canada U.S.A.
Canada U.S.A.

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2-1. Driving procedures
2
When driving
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.