Greetings,
This started a couple of weeks ago on my 95 LS400 with 298K miles …. When I unlock the driver or passenger side door with the key, the driver’s window goes down. Upon opening and closing the driver’s or passenger’s door, all of the car doors will continually lock/unlock.
This occurs until I turn the ignition switch on and depress the auto door lock button (not the manual lock button located by the door handle) several times. The continuous lock/unlock has happen on one occasion when I used the key to unlock the trunk.
If I lock the car using the auto door lock and close the door, the continuous lock/unlock will start again. I do not experience this problem when using the remote to lock the doors. However; I am no longer able to unlock the car with either remote.
I spoke to several mechanics, one stated it could be the security system, one stated it could be the left driver door multiplex control module or door lock actuator.
Is there way to disable or test the security system to remove it from the equation? BTW, What’s the purpose of the door multiplex control module?
Has anyone experienced a similar problem? Was it a costly repair?
Thanks In Advance!