2006 Lexus GS300 brake

SECTION 3 – 1
339
STARTING AND DRIVING
Starting and driving
Three−way catalytic converters340 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine exhaust caution341 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating the engine switch342 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking brake352 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic transmission353 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electronic throttle control system364 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intuitive parking assist365 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear view monitor system388 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise control392 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dynamic radar cruise control395 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adaptive variable suspension system417 . . . . . . . . . . . . . . . . . . . . . . .
Traction control system418 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle stability control system420 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hill−start assist control system422 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Variable gear ratio steering system424 . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle dynamics integrated management426 . . . . . . . . . . . . . . . . . . .
Brake system427 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake pad wear limit indicators431 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electric power steering system432 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire pressure warning system433 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pre−collision system443 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STARTING AND DRIVING
342
To allow proper operation of your vehicle’s
ventilation system, keep the inlet grilles in front of the
windshield clear of snow, leaves, or other
obstructions.
If you smell exhaust fumes in the vehicle, drive with
the windows open and the trunk lid closed. Have the
cause immediately located and corrected.OPERATING THE ENGINE SWITCH
G31030

1
Electronic key 2
Engine switch
3
Automatic transmission selector lever
4
Brake pedal

STARTING AND DRIVING
344
NOTICE
Observe the following instructions, or the engine switch
may not work properly.
The switch should be operated with your clean finger.
Do not use an oily or dirty finger.
Be careful not to spill water or other liquid on the
switch.
Do not modify the engine switch without consulting
your Lexus dealer. Doing so may cause system
problem.
Selecting the mode
G31076
“OFF” mode
“ACC” mode
“IG−ON” mode
To select “ACC”, “IG−ON” or “OFF” mode, press the
engine switch while carrying an electronic key with the
selector lever in the “P” position, and the brake pedal not
depressed.
Each time you press the engine switch, the mode changes in
order of “OFF”, “ACC”, “IG−ON” mode then back to “OFF”
mode.
To start the engine in each mode, push the engine switch while
the brake pedal is depressed. For details, see “Starting the
engine” on page 350.

STARTING AND DRIVING
345 “ACC” mode
G31033
This mode allows some accessories to be operable such
as the radio, even if the engine is not running. An amber
indicator light turns on at the engine switch.
To select the “ACC” mode from “OFF” mode, push the engine
switch once without depressing the brake pedal. The engine
immobilizer is disabled and the security indicator light goes
out. (For details, see “Engine immobilizer” on page 11.)
If you cycle once through all the modes (“OFF”, “ACC”,
“IG−ON”) with the driver’s door closed, the second time you
select the “ACC” mode, the above message will appear for a
few seconds.
If the vehicle is left in “ACC” mode for about an hour, the engine
switch is automatically off.
If the driver’s door is opened with the transmission in “P”, a
buzzer will remind you in “ACC” mode.“IG−ON” mode
G31034
“IG−ON” mode has two conditions: all gauges, meters
and accessories on and the engine is not running, or
engine running.
To select the “IG−ON” mode while the engine is not running:
From “OFF” mode—push the engine switch twice without
depressing the brake pedal.
From “ACC” mode—push the engine switch once without
depressing the brake pedal.
The engine switch indicator light will be illuminated amber if the
engine is not running, and will turn off when the engine is
running.

STARTING AND DRIVING
346If you push the engine switch while the brake pedal is
depressed with the transmission not in “P” or “N”, “IG−ON”
mode is selected with the engine not running.
It is not a malfunction if the needles on all meters and gauges
move slightly when selected in “IG−ON” mode.
NOTICE
Do not leave the engine switch in “IG−ON” mode while
the engine is not running. The battery will be
discharged.
“OFF” mode
G31032
This mode turns the engine and all accessories off.
To select the “OFF” mode from “IG−ON” mode:
If the engine is not running, push the engine switch once
while the brake pedal is not depressed.
If the engine is running, push the engine switch once
regardless of brake pedal position while the vehicle is
completely stopped.
To select the “OFF” mode from “ACC” mode, push the engine
switch twice while the brake pedal is not depressed.
The engine immobilizer is automatically set, the security
indicator light blinks and the engine switch indicator light is
turned off. (For details, see “Engine immobilizer” on page 11.)
The steering wheel can be locked only in this mode.

STARTING AND DRIVING
347
Steering lock
The steering wheel is locked in “OFF” mode.
When the steering lock is activated, you may hear a sound
coming from the steering column, it is not a malfunction. If you
select the “OFF” mode while the driver’s door is open, the
steering wheel is not locked until the driver’s door is closed.
If you select the mode other than “OFF” or start the engine, the
steering lock is disabled.
If there is trouble somewhere in the steering lock system, either
of the following warning messages will appear on the
multi−information display.
S/T IS NOT UNLOCKED
CHECK S/T LOCK
G31045
When pushing the engine switch while the brake pedal is
depressed, the steering lock is not unlocked if load is
applied to the steering wheel, and the above message
appears.
The engine will not start. At this time, the master warning light
comes on and the engine switch indicator light blinks green.

STARTING AND DRIVING
349
How to start the engine
Before starting the engine, be sure to follow the instructions.
CRANKING HOLD FUNCTION
Once you push the engine switch while the brake pedal is
depressed, the cranking hold function continues to crank the
engine in “IG−ON” mode until it starts.
The function stops cranking the engine after about 25 seconds
at maximum if the engine has not started yet. When you crank
the engine again, wait a few seconds and restart it.
BEFORE STARTING THE ENGINE
1. Check the area around the vehicle before entering it.
2. Adjust seat position, seatback angle, seat cushion angle,
seat cushion height, head restraint height and steering wheel
angle.
3. Adjust the inside and outside rear view mirrors.
4. Lock all doors.
5. Fasten seat belts.
Remember to check that the service reminder indicators
function when the engine switch is selected in “IG−ON” mode,
and check the fuel gauge to see that you have sufficient fuel.BEFORE CRANKING
1. Apply the parking brake firmly.
2. Turn off unnecessary lights and accessories.
3. Put the selector lever in ”P”. If you need to restart the engine
while the vehicle is moving, put the selector lever in ”N”. A
starter safety device will prevent the starter from operating if
the selector lever is in any drive position.
4. Depress the brake pedal and hold it to the floor until driving
off.
The multiport fuel injection system/sequential multiport fuel
injection system in your engine automatically controls the
proper air−fuel mixture for starting. You can start a cold or hot
engine as follows:

STARTING AND DRIVING
350
Starting the engine
Normal starting procedure
G31035
When depressing the brake pedal while carrying an
electronic key, make sure the green engine switch
indicator light comes on. And then push the engine
switch to start the engine.
If you press the engine switch while the brake pedal is
depressed and the transmission is in “P” or “N”, the engine will
start even if initially in “OFF”, “ACC” or “IG−ON” mode.
If you start the engine in “OFF” mode, the engine immobilizer
is disabled, and the security indicator light goes off.
If you push the engine switch while the brake pedal is
depressed with the transmission not in “P” or “N”, “IG−ON”
mode will be selected with the engine not running.If the engine stalls ...
Simply restart it , using the correct procedure given in normal
starting.
If the engine will not start
See ”If your vehicle will not start” on page 462.
NOTICE
Do not race a cold engine.
If the engine becomes difficult to start or stalls
frequently, have the engine checked immediately.