I recently installed a door actuator on the driver side of my 95 sc400. Upon completion everything appeared to work properly, however when I unlock the door with my key the alarm goes off. Any suggestions of what I need to do to correct this problem.

 

The alarm goes off even if it is disarmed??

 

I do not have the remote for the alarm, but if I lock the door with the button from the inside upon exiting it engages the alarm. If I do not engage the alarm by simply locking the door with the key from the outside then it will not activate the alarm..

 

there is a small sensor that attaches to the key cylinder, that may have fallen off.

 

How would I know if the sensor have fallen off, what does it look like?

 

there is a two wire sensor attached to the key cylinder, if you dont see it there, it has fallen off, or one of the arms that hold it to the cylinder broke.

if you need one, i have it 30 shipped.

 

Wat is a door actuator anyway?

 

Should be the thing that controls the door locks. If it goes bad the door locks have to be opened and closed manually.