2000 Lexus LS400 ECU

For detailed information, refer to the description given in each section\
.
PICTORIAL INDEX
xi
Page
1 Engine coolant temperature gauge 59. . . . . . .
2 Tachometer 60
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Automatic transmission indicator lights 289 .
4 Turn signal indicator light 39
. . . . . . . . . . . . . . .
5 Headlight indicator light 35
. . . . . . . . . . . . . . . . .
6 Headlight high beam indicator light 39 . . . . . .
7 Fuel gauge 57
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Low fuel level warning light 68
. . . . . . . . . . . . . .
9 Cruise control indicator light 305
. . . . . . . . . . .
10 Discharge warning light 67
. . . . . . . . . . . . . . . . .
11 Driver's seat belt reminder light 66
. . . . . . . . . .
12 ODO/TRIP RESET button 61
. . . . . . . . . . . . . . . .
13 Open door warning light 68
. . . . . . . . . . . . . . . . . Page
14 SRS warning light
66
. . . . . . . . . . . . . . . . . . . . . . .
15 Brake system warning light 65
. . . . . . . . . . . . . .
16 Odometer and trip meter 61
. . . . . . . . . . . . . . . .
17 Multi information display 70
. . . . . . . . . . . . . . . .
18 Slip indicator light 312, 316
. . . . . . . . . . . . . . . . .
19 Malfunction indicator lamp 67
. . . . . . . . . . . . . .
20 Vehicle skid control system OFF
indicator light 317 . . . . . . . . . . . . . . . . . . . . . . . . .
21 Anti±lock brake system warning light 68 . . . . .
22 Security indicator light 216
. . . . . . . . . . . . . . . . .
23 Instrument panel light control 79
. . . . . . . . . . . .
24 Snow mode indicator light 303
. . . . . . . . . . . . . .
25 Power mode indicator light 303
. . . . . . . . . . . . .
26 Height control indicator light 312
. . . . . . . . . . .

For detailed information, refer to the description given in each section\
.
PICTORIAL INDEX
xiii
Page
1 Engine coolant temperature gauge 59. . . . . . .
2 Tachometer 60
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Automatic transmission indicator lights 289 .
4 Turn signal indicator light 39
. . . . . . . . . . . . . . .
5 Tail light indicator light 35
. . . . . . . . . . . . . . . . . .
6 Headlight high beam indicator light 39 . . . . . .
7 Fuel gauge 57
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Low fuel level warning light 68
. . . . . . . . . . . . . .
9 Cruise control indicator light 305
. . . . . . . . . . .
10 Discharge warning light 67
. . . . . . . . . . . . . . . . .
11 Driver's seat belt reminder light 66
. . . . . . . . . .
12 ODO/TRIP RESET button 79
. . . . . . . . . . . . . . . .
13 Open door warning light 68
. . . . . . . . . . . . . . . . . Page
14 SRS warning light
66
. . . . . . . . . . . . . . . . . . . . . . .
15 Brake system warning light 65
. . . . . . . . . . . . . .
16 Odometer and trip meter 61
. . . . . . . . . . . . . . . .
17 Multi information display 70
. . . . . . . . . . . . . . . .
18 Slip indicator light 312, 316
. . . . . . . . . . . . . . . . .
19 Malfunction indicator lamp 67
. . . . . . . . . . . . . .
20 Vehicle skid control system
OFF indicator light 317 . . . . . . . . . . . . . . . . . . . . .
21 Anti±lock brake system warning light 68 . . . . .
22 Security indicator light 216
. . . . . . . . . . . . . . . . .
23 Instrument panel light control 79
. . . . . . . . . . . .
24 Snow mode indicator light 303
. . . . . . . . . . . . . .
25 Power mode indicator light 303
. . . . . . . . . . . . .

KEYS AND DOORS
16The engine immobiliser 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.
For your Lexus dealer to make you a new key with
built±in transponder chip, your dealer will need your key
number and master key. However, there is a limit to the
number of additional keys your Lexus dealer can make
for you. If you make your own duplicate key, you will not be
able to cancel the system or start the engine.
For vehicles sold in U.S.A.
FCC ID: MOZ RI±4ATY MADE IN JAPAN
This device complies with Part 15 of the FCC
Rules.
Operation is subject to the following two
conditions: (1) This device may not cause
harmful interference, and (2) this device must
accept any interference received, including
interference that may cause undesired
operation.
CAUTION
Changes or modifications not expressly approved by
the party responsible for compliance could void the
user's authority to operate the equipment.

KEYS AND DOORS
19
dropping it.
 Avoid putting it in water.
Locking/Unlocking the doors
When you push the ºLOCKº button on the key
briefly, all the doors can be locked from outside the
vehicle.
At this time, you can hear one beep.* However, when
you push the ºLOCKº 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
ºUNLOCKº button. If the key is in the ignition switch,
locking cannot be done.
Make sure all the doors are locked when you leave the
vehicle. Push the ºLOCKº button once again. If they
were already locked, the turn signal lights will flash.***
NOTE: *The volume of beep sound can be changed.
**The buzzer can be set not to sound with any doornot closed securely. ***The turn signal lights can beset not to flash. Ask your Lexus dealer for details.
NOTICE
Do not push the ºLOCKº button any longer than
2 to 3 seconds. Pushing the button longeractivates an alarm. For details, see page 23.
When you push the ºUNLOCKº 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.*
NOTE: *Unlocking by a 2±time operation can be
changed. Ask your Lexus dealer for details.

KEYS AND DOORS
29
NOTICE
Make sure the positive side and negative sideof the battery should be faced correctly.
Be careful not to bend the electrode of thebattery insertion and that dust or oils do notadhere to the inside of the module.
Take care not to lose the screws and O±ring.
5. Install the lid with the 2 screws.
NOTICE
Take care not to damage or bend the O±ring wheninstalling.
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.
DOORS
Locking with key

GAUGES, METERS AND SERVICE REMINDER INDICATORS
67
(e) Discharge Warning Light
This light warns that the battery is being discharged.
If it comes on while you are driving, stop the vehicle, turn
off the engine, and check for the cause. Look first at the
engine drive belt.
If it is loose or broken, the generator will not charge
the battery properly.
 If the belt is O.K., there is a problem somewhere in the
charging system.
The engine ignition will continue to operate, however,
until the battery is discharged. Turn off the air
conditioning, blower, radio, etc., and drive directly to the
nearest Lexus dealer or repair shop.
NOTICE
Do not continue driving if the engine drive belt is broken or loose.
(f) Malfunction Indicator Lamp
This lamp comes on in the following cases.
a. The fuel tank is completely empty. (See ºFuel gaugeº
on page 57 for instructions.)
b. The fuel tank cap is not tightened securely. (See
ºFuel tank capº on page 114 for instructions.)
c. There is a problem somewhere in your engine
electrical system, automatic transmission electrical
system or electronic throttle control system.
If it comes on while you are driving in case ªc.º, have your
vehicle checked/repaired by your Lexus dealer as soon
as possible.
If this lamp comes on and the engine speed does not
increase with the accelerator pedal depressed down to
about the middle position, there may be a problem
somewhere in your electronic throttle control system.
At this time, if you depress the accelerator pedal more
firmly and slowly, you can drive your vehicle at low
speeds. Have your Lexus checked by your Lexus dealer
as soon as possible.
Even if the abnormality of the electronic throttle control
system is corrected during low speed driving, the system
may not be recovered until the engine is stopped and the
ignition key is turned to ªACCº or ªLOCKº position.

INTERIOR EQUIPMENT
96
GARAGE DOOR OPENER
The garage door opener is manufactured under
license from HomeLink and can be programmed
to operate garage doors, estate gates, security
lighting, etc.
(a) Programming HomeLink
14L040

INTERIOR EQUIPMENT
99
CUP HOLDER
Front
14L009±4
To use the cup holder, push the top of the cup holder
portion of the rear console box.
The cup holder is designed for holding cups or
drink±cans securely in its holes.