ECU Lexus GX470 2004 Audio System / LEXUS 2004 GX470 FROM JAN. 2004 THROUGH JUL. 2004 PROD. (OM60A87U) Repair Manual

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484
9. Lower the vehicle completely and tighten the
wheel nuts.
To lower the vehicle, turn the jack handle extension
counterclockwise with the handle, making sure the
handle remains firmly fitted onto the jack handle
extension.
Use only the wheel nut wrench to tighten the nuts.
Do not use other tools or any additional leverage other
than your hands, such as a hammer, pipe or your foot.
Make sure the wrench is securely engaged over the
nut.
Tighten each nut a little at a time in the order shown.
Repeat the process until all the nuts are tight.
CAUTION
When lowering the vehicle, make sure all
portions of your body and all other persons
around will not be injured as the vehicle is
lowered to the ground.
 Have the wheel nuts tightened with torque
wrench to 112 N´m (11.5 kgf´m, 83 ft´lbf), as
soon as possible after changing wheels.
Otherwise, the nuts may loosen and the
wheels may fall off, which could cause a
serious accident.

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485
10. Reinstall the wheel ornament.
Put the wheel ornament into position and then tap it
firmly with the side or heel of your hand to snap it
into place.
CAUTION
Take due care in handling the ornament to avoid
unexpected personal injury.
11. After changing the wheel, check the air
pressure of the replaced tire. Stow all the tools,
jack and flat tire securely.
If the pressure of the replaced tire is low, drive slowly
to the nearest service station and fill to the correct
pressure.Do not forget to reinstall the tire valve cap as dirt and
moisture could get into the valve core and possible
cause air leakage. If the cap is missing, put a new
one on as soon as possible.
This is the same procedure for changing or rotating
your tires.
CAUTION
Before driving, make sure all the tools, jack and
flat tire are securely in place in their storage
location to reduce the possibility of personal
injury during a collision or sudden braking.

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492
(d) Emergency towingIf towing is necessary, we recommend you to have it done
by your Lexus dealer or a commercial tow truck service.
If towing service is not available in an emergency, your
vehicle may be temporarily towed by a cable or chain
secured to the emergency towing eyelet. Use extreme
caution when towing the vehicle.
NOTICE
Only use specified towing eyelet; otherwise yourvehicle may be damaged.
Never tow a vehicle from the rear with four wheels on
the ground. This may cause serious damage to the transmission.
A driver must be in the vehicle to steer it and operate the
brakes. Towing in this manner may be done only on hard-surfaced
roads
for a short distance and at low speeds. Also, the wheels,
axles, drive train, steering and brakes must all be in good
condition.

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493
CAUTION
Use extreme caution when towing the vehicle. Avoid
sudden starts or erratic driving maneuvers which would
place excessive stress on the emergency towing eyelet
and towing cable or chain. The eyelet and towing cable
or chain may break and cause serious injury or damage.
NOTICE
Use only a cable or chain specifically intended for use in towing vehicles. Securely fasten the cable or chainto the towing eyelet provided.
Before towing, check that the center differential is unlocked.
(The indicator light must be off with the ignition on.) Release
the parking brake and put the transmission in Nº. The ignition
key must be in ACCº (engine off) or ONº (engine running).CAUTION
If the engine is not running, the power assist for the
brakes and steering will not work so steering and
braking will be much harder than usual.
Emergency towing hook precautions:
 Before emergency towing, check that the eyelet is not
broken or damaged and that the installation bolts are not
loose.
 Fasten the towing cable or chain securely to the hook.
 Do not jerk the eyelet. Apply steady and even force.
 To avoid damaging the eyelet, do not pull from the side or at
a vertical angle. Always pull straight ahead.

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495
3Push down the shift lock override button. You can shift out
of Pº position only while pushing the button.
4Shift into Nº position.
Insert the cover. Start the engine. For your safety, keep
the brake pedal depressed.
Be sure to have the system checked by your Lexus dealer as
soon as possible.
LEXUS LINK SYSTEM (U.S.A. ONLY)
The Lexus Link System is an in-vehicle communications
service that provides you with enhanced safety, security
and convenience. With an active subscription you can
push the SERVICESº button for operator assistance or in
an emergency situation such as a vehicle accident (in
which the airbag was activated), you will automatically be
connected to the Lexus Link Call Center which will assist
you and/or send help 24 hours a day, 7 days a week.
The Lexus Link System can also record your voice or your
conversation with the Lexus Link Call Center Advisor.

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Information for using the Lexus Link System
The Lexus Link System is a subscription-based service. To
obtain any of the Lexus Link services you must have enrolled
with the Lexus Link Call Center and have an active
subscription. It is important to be aware that an active
subscription is required to receive safety and security services. To learn more about your subscription status or how to renew
or extend your subscription, please push the SERVICESº
button
and speak to the Lexus Link Advisor, or you may dial toll
free 1-800-25 Lexus (Toll-Free) (1-800-255-3987) and
select the option for Lexus Link. If you are not enrolled, you will
hear the explanation about Lexus Link System. The actual
message is shown on Audible voice promptsº on page 507.
If you push the SERVICESº button again, the services
enrollment call will be announced. To cancel the enrollment
call, push the SERVICESº button one more time.
NOTICE
This system is only operational in GPS (Global Positioning System) and analog cellular coverageareas. Services may not be available in an area wherethe GPS and analog cellular phone signals cannot bereceived.
When the ignition is turned to the ONº position, The Lexus
Link System is activeº is announced to inform you that the
system is on. If your Lexus Link subscription expires, you will
hear The Lexus Link System is not active. To activate your
Lexus Link System, press the SERVICESº button nowº. To
learn more about your subscription status or how to renew or
extend your s ubscription, please push the SERVICESº button
to speak to a Lexus Link Advisor, or you may dial toll free
1-800-25 Lexus (Toll-Free) (1-800-255-3987) and select
the option for Lexus Link. If problems are detected in the Lexus
Link System, you will hear A Lexus Link System error has
been detected. Please contact your Lexus dealer.º If you hear
this message, take your vehicle to your Lexus dealer. In some cases, even if your subscription has expired, you may
hear The Lexus Link System is activeº. This is due to the time
delay required to process the deactivation of your Lexus Link
System. During this period, when you push the SERVICESº
button, your call will be forwarded to enrollment. Once the
deactivation process has been completed, you will hear The
Lexus Link System is not activeº.

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498
NOTICE
The voice prompt messages are the primary means tolet you know the status of your subscription. It isimportant to be aware that an active subscription isrequired to receive safety and security services. If these
voice prompt messages are disabled and you desire to have them re-activated, contact your Lexus dealer.
When you push the - VOL +º button on the -º side
immediately followed by the PLAYº button, you can hear an
explanation about the Lexus Link System. However, this
function is not available when you are recording or hearing a
playback. See Audible voice promptsº on page 507 for a
written version of this recorder message. The basic subscriber service package is available free of
charge for the first year.
NOTICE
Do not remove the Lexus Link fuse and wiring harness
with the ignition on, or an emergency call will be placed
to the Lexus Link Call Center.

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505
Door Locking/Unlocking by Lexus Link
System
The Lexus Link System will allow your vehicle to be locked
and unlocked remotely.
If you find that your vehicle has not been locked, call the Lexus
Link Call Center 1-800-25-LEXUS (Toll-Free)
(1-800-255-3987), the Lexus Link Advisor can assist in
locking your vehicle.In case you are locked out, call the Lexus Link Call Center
1-800-25
Lexus (Toll-Free) (1-800-255-3987), a Lexus Link
Advisor can assist in unlocking your vehicle.
NOTICE
You must provide the Lexus Link operator with your Lexus Link PIN (Personal Identification Number) orpersonal security word, before they lock/unlock yourvehicle. However, the Lexus Link System will not beable to lock or unlock your vehicle if it has been parkedfor 48 hours or more after the ignition is turned off.Upon subscription expiration, all Lexus Link services
(i.e. automatic notification, emergency call functions,service call functions, door locking/unlocking function)are deactivated.

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Audible voice prompts
The following table shows the voice responses from the Lexus Link System\
.Voice phrase: Explanation about Lexus Link System
This is the Lexus Link system. Integrating
global positioning satellite and wireless
communication technology into your
Lexus and providing enhanced safety,
security, and convenience. At the touch of
a button, or automatically in the event of
an accident, you are connected to a Lexus
Link Advisor who will assist you Ð 24
hours a day, 7 days a week where GPS
and cellular coverage is available. The
Lexus Link System also has an audio
recorder allowing you to record reminders
to yourself or information from a Lexus
Link Advisor.
To contact a Lexus Link Advisor, press the
SERVICESº button. The Lexus Link
System will inform the advisor of your
vehicle's current location and your
identity. The advisors can handle a wide
variety of services, such as giving
directions to shops, gas stations, ATMs,
restaurants and roadside assistance with
location. Services available will depend
on the service package you selected.In an emergency, press the emergency
services button on your Lexus Link
console. It is marked with a red
ambulance. Upon receiving your call, the
advisor will assess the situation and, if
necessary, alert the nearest emergency
services provider. The emergency button
should only be used in life threatening
situations.
If your Lexus detects that an airbag
deployment may have occurred, the
Lexus Link System will automatically send
an emergency message to the Lexus Link
Call Center.
The system will also automatically contact
the call center if the security system alarm
goes off. An advisor will first contact you
to determine if the alarm is valid. Upon
your confirmation, the advisor will then
provide the vehicle location to the police.If you accidentally set off the alarm, press
the remote door unlock, or insert your key
in the door lock or ignition within 55
seconds. This will prevent the Lexus Link
System from placing a theft call.
The volume control lets you adjust the
volume level for Lexus Link calls, system
prompts, and memos. Press the plus key
to increase volume and the minus key to
decrease it.
To record a memo or a call, press the key
labeled RECº. When you are finished
recording, press the RECº button again.
To listen to the memo, press the PLAYº
button. You can record one message up
to five minutes long. When you record a
new memo, all of the previous memos will
be erased.
For more detailed information on the use,
features and limitations of this system,
please consult your Lexus Link Owner's
Manual.

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511
IF YOU LOSE YOUR KEYS ORLOCK YOURSELF OUT
You can purchase a new key at your Lexus dealer if you
can give them the key number and master key.
Even if you lose only one key, contact your Lexus dealer to
make a new key. If you lose all your master keys, you cannot
make new keys; the whole engine immobilizer system must be
replaced.
See the suggestion given in Keysº on page 8.
You can use the wireless remote control system with the new
key. Contact your Lexus dealer for detailed information.
If your keys are locked in the vehicle and you cannot get a
duplicate, many Lexus dealers can still open the door for you
using special tools. If your vehicle is equipped with Lexus Link
System, call the Lexus Link Call Center 1-800-25-LEXUS
(Toll-Free) (1-800-255-3987). Once you provide the Lexus
Link Call Center Advisor with your Lexus Link PIN (Personal
Identification Number), or personal security word, they will
unlock your vehicle.