Lexus LS400 (2000 year). Service manual — part 21

BE–166

–

BODY ELECTRICAL

WIRELESS DOOR LOCK CONTROL SYSTEM

2029

Start registration of recognition code

The vehicle should be in the following conditions.

The key is not inserted in the ignition key cylinder.

Driver’s door is OPEN. (Other doors are CLOSED)

Driver’s door is UNLOCKED. (Other doors are CLOSED)

Insert the key into the ignition key cylinder, then pull it out.

Press the door lock control switch (for manual operation) 5 times to
LOCK/UNLOCK at approx. 1 sec. interval.

1st time

2nd time

3rd time

4th time

5th time

LOCK

OFF

UNLOCK

Approx.

1 sec.

Approx.

1 sec.

Close the driver’s door, then open it.

Again press the door lock control switch (for manual operation) 5 times to
LOCK/UNLOCK at approx. 1 sec. interval.

1st time

2nd time

3rd time

4th time

5th time

LOCK

OFF

UNLOCK

Approx.

1 sec.

Approx.

1 sec.

Insert the key into the ignition key cylinder.

Within
40 secs.

Within
40 secs.

–

BODY ELECTRICAL

WIRELESS DOOR LOCK CONTROL SYSTEM

BE–167

2030

Within
3 secs.

Turn the ignition switch from ON to LOCK at approx. 1 sec. interval 1 to 5 times to select the mode.

Pull out the key plate from the ignition key cylinder.

When add mode or rewrite mode
is selected.

When confirmation
mode is selected.

ON

ON

ON

LOCK

LOCK

LOCK

Approx.

1 sec.

Approx.

1 sec.

Approx. 1 sec.

Approx.

1 sec.

Approx.

1 sec.

Add mode

Rewrite mode

Confirmation mode

ON – LOCK change occurs 1 time

ON – LOCK change occurs 2 times

ON – LOCK change occurs 3 times

MPX body ECU automatically performs
the LOCK–UNLOCK operation once
or twice at 1 sec, interval to inform the
operator that either the add mode or
rewrite mode has been selected.

LOCK–UNLOCK occurs once

LOCK–UNLOCK occurs twice

Indicates that add mode has been selected.

Indicates that rewrite mode has been
selected.

1 sec.

LOCK

1 sec. 1 sec.

LOCK

UNLOCK

UNLOCK

LOCK

2 secs. 2 secs.

UNLOCK

MPX body ECU automatically performs the
LOCK–UNLOCK operation 1 to 4 times at
2 sec. interval to inform the operator of
the number of the registered codes.
HINT:
When the number of the registered code
is 0, the operation is automatically
performed 5 times.

Example:
When the operation is performed twice, it
directs that 2 type of recognition code
have been registered.

1st time 2nd time

Registration of recognition code (Confirmation
mode and probation mode) is completed.

ON

LOCK

Approx.

1 sec.

Approx.

1 sec.

Prohibition mode

ON – LOCK change occurs 5 times

When prohibition
mode is selected.

BE–168

–

BODY ELECTRICAL

WIRELESS DOOR LOCK CONTROL SYSTEM

2031

MPX body performs operates LOCK–UNLOCK operation 5 times at a 1 sec.
interval to inform the operator that prohibition mode has been selected.

Press again either of switches on the transmitter for more than 1 sec.

MPX body ECU automatically performs LOCK–UNLOCK operation once or
twice at a 1 sec. interval to inform the operator that it has received the signal
from the transmitter.

LOCK–UNLOCK occurs once

LOCK–UNLOCK occurs twice

Registration of recognition code is completed

Registration of recognition code has not been completed.

Recognition code received first time and second time did not match.

Proceed to continue registration

If even one of the following conditions is satisfied, registration of recognition
codes in completed.

40 secs. elapses since the MPX body ECU response.

The driver’s door is closed.

The key plate is inserted in the ignition key cylinder.

4 types recognition codes are registration at one time.

Registration of recognition codes (add mode or rewrite mode) is completed.

Within
3 secs.

Within
40 secs.

ON

LOCK

Approx.

1 sec.

Approx.

1 sec.

When prohibition
mode is selected.

Press the lock and unlock switches on the transmitter simultaneously within 1.5 sec.

If they are not performed, the mode returns to the normal mode, then start with
”Start registration of recognition code”.

Proceed to finish registration

Within 40 secs.

Within 3 secs.

BE120–01

I03262

Engine Room
Junction Block

FR S/HTR Fuse

Lumbar Support Motor

Reclining Motor

Poser Seat Switch

Front Vertical Motor

Slide Motor

Rear Vertical Motor

Lumbar Support Switch

Lumbar Support
Motor

Slide Motor

Front Vertical Motor

Poser Seat Switch

Lumbar Support Switch

Lumbar Support Motor

–

BODY ELECTRICAL

POWER SEAT CONTROL SYSTEM (w/o Driving
Position Memory)

BE–169

2032

POWER SEAT CONTROL SYSTEM (w/o Driving Position
Memory)

LOCATION