ignition Lexus GX470 2004 Audio System / LEXUS 2004 GX470 FROM NOV. 2003 THROUGH DEC. 2003 PROD. (OM60A74U) Repair Manual

AUDIO
277
Quick reference for your remote control
22PY112

1DISC/CH/PROGº buttons
2TUNE/TRACKº buttons
3ON/SOURCEº button
4OFFº button
Using your rear seat audio system: some
basics
The following instructions are for the rear passengers.
Please let the rear passengers read and follow the
instructions when the rear passengers use the rear audio
system.
This section describes some of the basic features of the Lexus
audio system. Some information may not pertain to your
system.
Your audio system adjusts to the optimum volume and tone
quality automatically. While the system is adjusting the audio
sound, the audio sound fades out and then fades in.
Your audio system works when the ignition switch is in the
ACCº or ONº position.
You can enjoy the rear seat entertainment system with
commercial headphone. See Headphone input jacksº on
page 287 in this Section for details.
You can also enjoy the rear seat entertainment system with a
wireless headphone. The wireless headphone can be used
within rear seat. If the signal becomes weak, the headphone
will mute. For details, refer to the manufacturer's instructions.
With some wireless headphone generally available in the
market, it may be difficult to catch sound properly. Lexus
recommends the use of Lexus genuine wireless headphone.
You can purchase a wireless headphone at a Lexus dealer.

AUDIO
298
12

º button: Fast forwards a screen when the DVD
player is operated.
13
º button: Play a screen when the DVD player is
operated.
14º button: Pause a screen when the DVD player is
operated.
15º button: Reverse a screen when the DVD player
is operated.
16TOP MENUº button:
Indicate the title selection screen for DVD video when
the DVD player is operated.
17AUDIOº button:
Indicate the changing audio screen when the DVD
player is operated.
18SUB TITLEº button:
Indicate the changing subtitle screen when the DVD
player is operated.
19MENUº button:
Indicate the menu screen for DVD video when the DVD
player is operated.
20OFFº button:
Turn off the rear seat entertainment system.
21TUNE/TRACKº buttons:
Operate the front audio system or select the
track/chapter when the DVD player is operated.
22DISC/CH/PROGº buttons:
Skip directly to a desired preset station, disc, track or
chapter.
Using your audio system: some basics
The following instructions are for the rear passengers.
Please let the rear passengers read and follow the
instructions when the rear passengers use the rear seat
entertainment system.
This section describes some of the basic features of the rear
seat entertainment system. Some information may not pertain
to your system.
Your audio system adjusts to the optimum volume and tone
quality automatically. While the system is adjusting the audio
sound, the audio sound fades out and then fades in.
The rear seat entertainment system is designed for the rear
passengers to enjoy audio and DVD video separately from the
front audio system.
The rear seat entertainment system can be operated when the
ignition key is in the ACCº or ONº position.
The rear passengers can enjoy all modes (AM and FM radio,
cassette tape player, compact disc player with changer and
DVD player) on the rear seat entertainment system only if a
cassette tape and a compact disc are loaded in the front audio
system.
The rear seat entertainment system can play DVD video, audio
CD, video CD, CD text, dts-CD or DVD audio only when a disc
is loaded in the DVD player.
You can enjoy videos and sound when your personal audio
system is connected to the input terminal adapter on the rear
console box. For details, refer to the manufacturer's
instructions.

AUDIO
309 After replacing the battery, check that the controller operates
properly. If the controller still does not operate properly, contact
your Lexus dealer.
DVD player operation
The DVD player can play audio CDs, DVD video discs, CD
texts, dts-CDs, DVD audio discs and video CDs.
For appropriate discs for this player, see Car audio/video
system operating hintsº on page 357.
The DVD player works when the ignition key is in the ACCº or
ONº position.
To turn on the DVD player, a disc must be loaded in the player.
To turn off the player, eject the disc.
(a) Inserting the disc
1. Push the center of the rear console box lid.

AUDIO
313 (c) Selecting the DVD mode

1Controller button2Mode selection screen
To select the DVD mode, push the DVDº button on the
controller.
You can also select the DVD mode on the mode selection
screen mentioned above.
DVDº appears on the screen.
The DVD Hint!º screen appears when the DVD mode is
first selected after you turn the ignition key to the ACCº
or ONº position.
Push the OKº switch when you read the message.

SECTION 3 ± 1
366
STARTING AND DRIVING
Starting and driving
Three-way catalytic converters367 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine exhaust caution370 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Before starting the engine372 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition switch with steering lock372 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking brake374 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to start the engine374 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic transmission376 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Four-wheel drive system384 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear view monitor system388 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise control392 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear height control air suspension395 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electronic modulated suspension402 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Active traction control system403 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle stability control system405 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Downhill assist control system408 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hill-start assist control system411 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake system413 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire pressure warning system417 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake pad wear limit indicators426 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Limited-slip differential427 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STARTING AND DRIVING
368
NOTICE
A large amount of unburned gases flowing into the
three-way catalytic converter may cause it to overheat
and create a fire hazard. To prevent this and other
damage, observe the following precautions:
Use only unleaded gasoline.
Do not drive with an extremely low fuel level; running
out of fuel could cause the engine to misfire, creating
an excessive load on the three-way catalytic
converter.
Do not allow the engine to run at idle speed for more
than 20 minutes.
Avoid racing the engine.
Do not push-start or pull-start your vehicle.
Do not turn off the ignition while the vehicle is
moving.
Keep your engine in good running order.
Malfunctions in the engine electrical system, electric
ignition system or fuel system could cause an
extremely high three-way catalytic converter
temperature.
If the engine becomes difficult to start or stalls
frequently, take your vehicle in for a check-up as
soon as possible. Remember, your Lexus dealer
knows your vehicle and its three-way catalytic
converter system best.

STARTING AND DRIVING
372
BEFORE STARTING THE ENGINE
1. Check the area around the vehicle before entering it.
2. Adjust seat position, seatback angle, 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 turning the key to ONº, and check the fuel
gauge to see that you have sufficient fuel.
IGNITION SWITCH WITH STEERING
LOCK
STARTº Ð Starter motor on. The key will return to the
ONº position when released.
For starting tips, see page 374.
It is not a malfunction even if the needle of the tachometer, fuel
gauge or engine coolant temperature gauge returns to the
bottom position when the ignition switch is turned to the
STARTº position.
ONº Ð Engine on and all accessories on.
This is the normal driving position.
It is not malfunction even if the needle on the speedometer may
move when the ignition switch is turned to the ONº position.

STARTING AND DRIVING
373
NOTICE
Do not leave the key in the ONº position if the engine
is not running. The battery will discharge and the
electronic ignition system could be damaged.
ACCº Ð Accessories such as the radio operate, but the
engine is off.
If you leave the key in the ACCº or LOCKº position and open
the driver's door, a buzzer will remind you to remove the key.
LOCKº Ð Engine is off and the steering wheel is locked.
The ignition key can be removed only at this position.
To turn the key from ACCº to the LOCKº position, you must
put the transmission selector lever in the Pº position.
Once you remove the key, the engine immobilizer system is
automatically set. See Engine immobilizer systemº on page
14.
When starting the engine, the key may seem stuck at the
LOCKº position. To free it, first be sure the key is pushed all
the way in, and then rock the steering wheel slightly while
turning the key gently.
If, in an emergency, you must turn the engine off while the
vehicle is moving, turn the key only to ACCº.

STARTING AND DRIVING
374
PARKING BRAKE
To set: Pull up the lever. For better holding power, first
depress the brake pedal and hold it while setting the
parking brake.
To release: Pull up the lever slightly (
1), press the lock
release button (2), and lower the lever (3).
Before leaving your vehicle, firmly apply the parking brake. For
better holding power, first depress the brake pedal and hold it
while setting the parking brake.
CAUTION
Before driving, make sure the parking brake is fully
released and that the parking brake reminder light is off.
HOW TO START THE ENGINE
Cranking hold function
Once you turn the ignition key to STARTº position and release
it, the cranking hold function continues to crank the engine in
ONº position until it starts.
The function stops cranking the engine after about 25 seconds
maximum if the engine has not started yet. When you crank
the engine again, wait a few seconds and restart it.
If you hold the key in STARTº position, the function will keep
cranking for about 30 seconds maximum.
Before cranking
1. Apply the parking brake firmly.
2. Turn off unnecessary lights and accessories.
3. Put the selector lever in Pº. If you need to restart the engine
while the vehicle is moving, put the selector lever in Nº. 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.

STARTING AND DRIVING
375
Starting the engine
Before starting the engine, be sure to follow the instructions in
Before crankingº.
Normal starting procedure
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:
With your foot off the accelerator pedal, turn the ignition key to
STARTº position, then release it.Engine should be warmed up by driving, not in idle. For
warming up, drive with smoothly turning engine until engine
coolant temperature is within normal range.
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 startº 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.