ECU LEXUS LX470 2006 Owners Manual

IMPORTANT INFORMATION ABOUT YOUR LEXUS
iii
IMPORTANT INFORMATION ABOUTYOUR LEXUS
Occupant restraint systems
Lexus encourages you and your family to take the time to read
Section 1 −6 of this Owner’s Manual carefully. In terms of
helping you understand how you can receive the maximum
benefit of the occupant restraint systems this vehicle provides,
Section 1 −6 of this Owner’s Manual is the most important
section for you and your family to read.
Section 1 −6 describes the function and operation concerning
seats, seat belts, SRS airbags and child restraint systems of
this vehicle and some potential hazards you should be aware
of. These systems work together along with the overall
structure of this vehicle in order to provide occupant restraint
in the event of a crash. The effect of each system is enhanced
when it is used properly and together with other systems. No
single occupant restraint system can, by itself, provide you or
your family with the equal level of restraint which these
systems can provide when used together. That is why it is
important for you and your family to understand the purpose
and proper use of each of these systems and how they relate
to each other. The purpose of all occupant
restraint systems is to help reduce
the possibility of death or serious injury in the event of a
collision. None of these systems, either individually or
together, can ensure that there is no injury in the event of
collision. However, the more you know about these systems
and how to use them properly, the greater your chances
become of surviving an acci dent without death or serious
injury.
Seat belts provide the primary restraint to all occupants of the
vehicle, and every occupant of the vehicle should wear seat
belts properly at all times. Children should always be secured
in child restraint systems that are appropriate for their age and
size. SRS (Supplemental Restraint System) airbags are, as
their names imply, designed to work with, and be supplemental
to, seat belts and are not substitutes for them. SRS airbags
can be very effective in reducing the risk of head and chest
injuries by preventing contact of the head and chest with
interior portions of the vehicle.
In order to be effective, the SRS airbags must deploy with
tremendous speed. The rapid deployment of the SRS airbags
makes the SRS airbags themselves potential sources of
serious injury if an occupant is too close to an airbag, or if an
object or some part of his or her body has been placed between
the occupant and the airbag at the time of deployment. This
is just one example of how the instructions in Section 1 −6 of
this Owner’s Manual will help ensure proper use of the
occupant restraint systems, and increase the safety they can
provide to you and your family in the event of an accident.
Lexus recommends you to read the provisions in Section 1− 6
carefully and refer to them as needed during your time of
ownership of this vehicle.

IMPORTANT INFORMATION ABOUT YOUR LEXUS
iv
Event data recorder
Your vehicle has computers that monitor and control certain
aspects of your vehicle. These computers assist in driving and
maintaining optimal vehicle performance. Besides storing
data useful for troubleshooting, there is a system to record data
in a crash or a near car crash event. This is called an Event
Data Recorder (EDR).
The SRS airbag sensor assembly contains the EDR. In a
crash or a near car crash event, this device may record some
or all of the following information:
 Engine speed
 Whether the brake pedal was applied or not
 Vehicle speed
 To what extent the accelerator pedal was depressed
 Position of the transmission selector lever
 Whether the driver and front passenger wore the seat belts
or not
 Driver’s seat position
 Front passenger’s occupant classification
 SRS airbag deployment data
 SRS airbag system diagnostic data If your vehicle is equipped with a vehicle stability control (VSC)
system,
its Electronic Control Unit (ECU) may contain another
EDR. There are a variety of driving situations which include
activating the VSC under wh ich the VSC EDR will record
certain information. The VSC EDR may record some or all of
the following information:
 Behavior of the vehicle
 Steering wheel angle
 Vehicle speed
 To what extent the accelerator pedal was depressed
 To what extent the brake pedal was applied
 To what extent the ECU controlled the condition of the 4
wheels
 Vehicle stability control system diagnostic data
The information above is intended to be used for the purpose
of improving vehicle safety performance. Unlike general data
recorders, the EDR does not record sound data such as
conversation between passengers.

For detailed information, refer to the description given in each section\
.
PICTORIAL INDEX
xiiPage
1
Power window switches 39
. . . . . . . . . . . . . . . . . . . . . .
2 Power door lock switch 21
. . . . . . . . . . . . . . . . . . . . . .
3 Window lock switch 40
. . . . . . . . . . . . . . . . . . . . . . . . . .
4 Driving position memory switch 189
. . . . . . . . . . . . . .
5 Power quarter window switches 42
. . . . . . . . . . . . . .
6 Power rear view mirror control switches 194 . . . . . .
7 Roll sensing of curtain shield airbags off
switch 45, 146
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Headlight and turn signal switch 30
. . . . . . . . . . . . . .
9 Windshield wiper and washer switch 33
. . . . . . . . . .
10 Center differential lock switch 266
. . . . . . . . . . . . . . .
11 Power antenna switch 222
. . . . . . . . . . . . . . . . . . . . . . .
12 Emergency flasher switch 43
. . . . . . . . . . . . . . . . . . . .
13 Security indicator light 25
. . . . . . . . . . . . . . . . . . . . . . .
14 Outside temperature display 72
. . . . . . . . . . . . . . . . . .
15 Clock 71
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . .
16 Navigation system including air conditioning
controls (See the separate “Navigation System
Owner’s Manual”.)
17 Front passenger occupant classification
indicator light 157 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 Front passenger’s seat belt reminder light 55 . . . . .
19 Audio system 218
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20 Glove box 76
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page
21 Tire pressure warning select switch
307
. . . . . . . . . .
22 Outside rear view mirror defogger switch 38 . . . . . .
23 Rear air conditioning switch 210
. . . . . . . . . . . . . . . . .
24 Power outlet 74
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25 Cigarette lighter 72
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26 Fourwheel drive control lever 266
. . . . . . . . . . . . . . .
27 Seat heater switches 44
. . . . . . . . . . . . . . . . . . . . . . . . .
28 Rear window defogger switch 37
. . . . . . . . . . . . . . . . .
29 Ashtray 72
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
.
30 Automatic transmission selector lever 259 . . . . . . . .
31 Damping mode select switch 287
. . . . . . . . . . . . . . . .
32 Active height control switch 279
. . . . . . . . . . . . . . . . .
33 Driving pattern selector switch 261
. . . . . . . . . . . . . . .
34 Second start mode selector switch 266
. . . . . . . . . . .
35 Cruise control switch 275
. . . . . . . . . . . . . . . . . . . . . . .
36 Telephone switches and speech command switch
(See the separate “Navigation System Owner’s
Manual”.)
37 Audio remote controls (Steering switches) 243 . . . .
38 Lexus night view system onoff knob 272
. . . . . . . .
39 Hood lock release lever 92
. . . . . . . . . . . . . . . . . . . . . .
40 Fuel filler door opener 93
. . . . . . . . . . . . . . . . . . . . . . . .
41 Tire pressure warning reset switch 305
. . . . . . . . . . .

For detailed information, refer to the description given in each section\
.
PICTORIAL INDEX
xivPage
1
Power window switches 39
. . . . . . . . . . . . . . . . . . . . . .
2 Power door lock switch 21
. . . . . . . . . . . . . . . . . . . . . .
3 Window lock switch 40
. . . . . . . . . . . . . . . . . . . . . . . . . .
4 Driving position memory switch 189
. . . . . . . . . . . . . .
5 Power quarter window switches 42
. . . . . . . . . . . . . .
6 Power rear view mirror control switches 194 . . . . . .
7 Roll sensing of curtain shield
airbags off switch 45, 146
. . . . . . . . . . . . . . . . . . . . . . . .
8 Headlight and turn signal switch 30
. . . . . . . . . . . . . .
9 Windshield wiper and washer switch 33
. . . . . . . . . .
10 Center differential lock switch 266
. . . . . . . . . . . . . . .
11 Power antenna switch 222
. . . . . . . . . . . . . . . . . . . . . . .
12 Emergency flasher switch 43
. . . . . . . . . . . . . . . . . . . .
13 Trip information display 63
. . . . . . . . . . . . . . . . . . . . . .
14 Clock 71
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . .
15 Outside temperature display 72
. . . . . . . . . . . . . . . . . .
16 Security indicator light 25
. . . . . . . . . . . . . . . . . . . . . . .
17 Audio system 218
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 Front passenger occupant classification
indicator light 157 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19 Front passenger’s seat belt reminder light 55 . . . . .
20 Automatic air conditioning controls 202
. . . . . . . . . . Page
21 Glove box
76
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22 Tire pressure warning select switch 307
. . . . . . . . . .
23 Outside rear view mirror defogger switch 38 . . . . . .
24 Rear air conditioning switch 210
. . . . . . . . . . . . . . . . .
25 Power outlet 74
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26 Cigarette lighter 72
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27 Fourwheel drive control lever 266
. . . . . . . . . . . . . . .
28 Seat heater switches 44
. . . . . . . . . . . . . . . . . . . . . . . . .
29 Rear window defogger switch 37
. . . . . . . . . . . . . . . . .
30 Ashtray 72
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
.
31 Automatic transmission selector lever 259 . . . . . . . .
32 Damping mode select switch 287
. . . . . . . . . . . . . . . .
33 Active height control switch 279
. . . . . . . . . . . . . . . . .
34 Driving pattern selector switch 261
. . . . . . . . . . . . . . .
35 Second start mode selector switch 266
. . . . . . . . . . .
36 Cruise control switch 275
. . . . . . . . . . . . . . . . . . . . . . .
37 Audio remote controls (Steering switches) 243 . . . .
38 Lexus night view system onoff knob 272
. . . . . . . .
39 Hood lock release lever 92
. . . . . . . . . . . . . . . . . . . . . .
40 Fuel filler door opener 93
. . . . . . . . . . . . . . . . . . . . . . . .
41 Tire pressure warning reset switch 305
. . . . . . . . . . .

KEYS AND DOORS
9
Flat key
11g039c
As a transponder chip is built in its key case, you can start
the engine with this key.
The flat key works in every lock.
A transponder chip for the engine immobilizer system has
been placed in the key case of the flat key. This chip is required
for the system to function correctly, so be careful not to lose this
key. If you make your own duplicate key, you will not be able
to cancel the system or start the engine.
Insert your key plate in its key case as shown. We recommend
that you always carry this with you for emergency use. Do not
leave it in your vehicle.
Starting the engine using a flat key
11x022b
1. Remove the key plate from the key case.
2. Insert the key plate into the ignition switch. The indicator
light keeps flashing.
3. Bring the key case closer to the ignition switch within 10
seconds as indicated by the arrow head. The indicator light
goes out. This means the engine immobilizer system is
automatically canceled. (For details, see “Engine immobilizer
system” on page 11.) You can put the key case away then. You
cannot cancel the engine immobilizer system if 10 seconds
have passed after you inserted the key plate. You need to
remove the key plate from the ignition switch and try it again
from the step 2.
4. Start the engine within 60 seconds after the security
indicator light goes out. You cannot start the engine if 60
seconds have passed after the security indicator went off. You
need to remove the key plate from the ignition switch and try
it again from the step 2.

KEYS AND DOORS
11
11G035c
Do not bend the key grip or flat key.
 Do not cover the key grip or flat key with any material
that cuts off electromagnetic waves.
 Do not knock the key or flat key hard against other
objects.
 Do not leave the key or flat key exposed to high
temperatures for a long period, such as on the
dashboard or hood under direct sunlight.
 Do not put the key or flat key in water or wash it in an
ultrasonic washer.
 Do not use the key or flat key with electromagnetic
materials.
ENGINE IMMOBILIZER SYSTEM
11X514
The engine immobilizer system is a theft prevention
system. When you insert the key in the ignition switch, the
transponder chip in the key’s head transmits an electronic
code to the vehicle. The engine will start only when the
electronic code in the chip corresponds to the registered
ID code for the vehicle.
The system is automatically set when the key is removed from
the ignition switch. At this time, the security indicator light
flashes. When you insert the key in the ignition switch, the
security indicator light goes out and the system is canceled
automatically, which enables the engine to start.
The transponder chip of the flat key is in its key case. You can
cancel the engine immobilizer system using the flat key. (For
details, see “Flat key” on page 9.)

KEYS AND DOORS
14
Locking/Unlocking the doors
When you push the “LOCK” button on the key, all the
doors can be locked from outside the vehicle.
At this time, you can hear one beep and turn signal lights flash
once.* However, when you push the “LOCK” button with any
door not closed securely, the buzzer sounds for 10 seconds.**
To stop the buzzer, close all the doors securely or push the
“UNLOCK” button. If the key is in the ignition switch, locking
cannot be done.
NOTE: *The turn signal lights can be set not to flash and
beep volume can be changed. **The buzzer can be set not
to sound if a door is not closed securely. Ask your Lexus
dealer for details.
When you push the “UNLOCK” button, the driver’s door
is unlocked. Pushing that button once again within 3
seconds from the first push, all other doors are also
unlocked.*
At this time, two beeps sound and turn signal lights flash
twice.**
NOTE: *The 2step unlocking function can be changed.
**The turn signal lights can be set not to flash and beep
volume can be changed. Ask your Lexus dealer for details. Together with the activation of
unlocking, the interior light
comes on for 15 seconds if the interior light switch is in “DOOR”
position.* However, this function does not work when the
ignition key is in the “ACC” or “ON” position. For further
information, see “Interior lights” on page 69.
You have 30 seconds to open a door after using the wireless
remote unlock feature.** If a door is not opened by then, all the
doors will be automatically locked again. This function does
not work when the ignition key is inserted.
NOTE: *The interior light can be set not to come on or the
duration of lighting can be changed. **The time before
automatic relocking can be changed. Ask your Lexus
dealer for details.
Even if the “LOCK” or “UNLOCK” switch is kept pressed in, the
locking or unlocking operation is not repeated. Release the
switch and then push again.

KEYS AND DOORS
18
11x603
3. Open and remove the battery case cover using a coin.
4. Remove the discharged battery and put in a new battery
with the positive side up.
NOTICE
Make sure the positive side and negative side of the
battery are faced correctly.
 Do not replace the battery with wet hands. Water may
cause unexpected rust.
 Do not touch or move any components inside the
transmitter, or it may interfere with proper operation.
 Be careful not to bend the electrode when inserting
the battery and that dust or oils do not adhere to the
inside of the module.
 Take care not to lose the screws.
5. Replace the battery case cover. 6. Install the module into the key frame and secure the cover
with the screw.
7. When pushing any switch on the wireless key, make sure
the indicator light comes on.

KEYS AND DOORS
24
11X008d
Opening from inside 1
Unlock 2Lock 3Open
The back door can be opened as shown. See “Cargo and luggage” on page 329 for precautions to
observe in loading luggage.
After closing the back door, try pulling it up to make sure it is
securely closed.
Closing the back door with the lock button pushed in will also
lock the back door. Be careful not to lock your keys in the
vehicle.
The back door lock will be controlled with the power door lock
switch. (For instructions, see “Side doors” on page 19.)
CAUTION
Keep the back
door closed while driving. This not only
keeps the luggage from being thrown out but also
prevents exhaust gases from entering the vehicle.

KEYS AND DOORS
26
17X504
Security indicator light (For vehicles with navigation
system)
17X505
 Security indicator light (For vehicles without navigation
system)
Setting the system
1. Turn the ignition key to the “LOCK” position and
remove it.
The engine immobilizer system causes the indicator light to
flash.
2. Close and lock all the doors and hood using an ignition
key or wireless remote control.
If you lock them with wireless remote control, the turn signals
flash once.*
NOTE: *The turn signals can be set not to flash. Ask your
Lexus dealer for details.
The flashing indicator light will remain on when all the doors
and hood are closed and locked.
3. After 30 seconds, the indicator starts flashing and the
system is set.
Cancelling the system
When you unlock any door using an ignition key or
wireless remote control, the system is cancelled.
If you unlock any door with wireless remote control, the turn
signals flash twice.* NOTE: *The turn signals can be set not to flash. Ask your
Lexus dealer for details.