Lexus GS300/400 (2000 year). Manual - part 51

BE–162

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BODY ELECTRICAL

WIRELESS DOOR LOCK CONTROL SYSTEM

2463

2.

REPLACE DOOR CONTROL RECEIVER AND TRANS-
MITTER

NOTICE:
When replacing the door control receiver and transmitter,
registration of recongnition code is necessary because
they are provided as single components.
(a)

Select which operation mode should be performed from
the following modes.



Add mode



Rewrite mode



Prohibition mode



Confirmation mode

HINT:



The add mode is used to retain codes already registered
while you register new recongnition codes. This mode is
used when adding a transmitter. However, if the number
of registered codes exceeds 4 codes, previously regis-
tered codes are correspondingly erased in order, starting
from the first registered code.



The rewrite mode is used to erase all previously regis-
tered codes and register only new recognition codes.



The prohibition mode is used to erase all registered codes
and cancels the wireless door lock function. Use this
mode when the transmitter is lost.



The confirmation mode is for confirming how many re-
congnition codes are already registered before you regis-
ter additional recognition codes.

(b)

Follow the chart on the following pages to register the
transmitter recongnition code at the wireless door lock
conrol receiver.

HINT:



When procedure is out of the specified, the operation re-
turns to normal operation.



Maximum 4 recognition codes can be registered.

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BODY ELECTRICAL

WIRELESS DOOR LOCK CONTROL SYSTEM

BE–163

2464

Start registration of recognition code

The vehicle should be in the following conditions.

 Any door is OPEN. (Other doors are CLOSED)

 Any door is UNLOCKED.

 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 all door, then open the any door.

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.

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BODY ELECTRICAL

WIRELESS DOOR LOCK CONTROL SYSTEM

2465

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 iniform 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 types of recognition code
have been registered.

1st time 2nd time

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

ON

LOCK

Approx.

1 sec.

Approx.

1 sec.

Prohibition mode

ON – LOCK change occurs 5 times

When prohibition
mode is selected.

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BODY ELECTRICAL

WIRELESS DOOR LOCK CONTROL SYSTEM

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2466

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

Press again either one of 3 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 the receiver 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 is 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 type 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 sec.

If LOCK–UNLOCK operation can not be performed at all, the mode returns to the
normal mode, then start with ”Start registration of recognition code”.

Proceed to finish registration

Within 40 secs.