Starter wont engage because of security alarm

I have a 96 jetta What type of noise ? Could it be the solenoid on the starter ?

I have heard of VW's of this era having issues with water getting on the alarm module board, which causes the alarm to go off without rhyme or reason. I believe the seal around the water deflectors near the windshield cracks or degrades. The alarm module should be under the hood near the windshield on the driver's side, under a plastic cover. If you can locate it, you could try drying it off and seeing if that helps.
An alternative is that the wiring in the door could be getting wet, if the seals are no longer good.
If you just need to make it *******, remove the fuse for the horn, if you can find it.

Insert the key into the door lock on the driver side and move it to the unlock position two times quickly. That should turn off the alarm.

ok so the same thing just happened with my jetta. So heres what worked for me: take off the door panel (drivers side) and you should see some melted or bunched wires together. just snip them and leave them be. It was either the wires or the sensor that messed everything up. This should work.

use your key in the driver side door or passenger side door to turn the alarm off i had to do the same thing with my vw golf 95 check the soiland

Look Around Engine Compartment For A Loose Or Corroded GROUND, Like Battery To BODY They Are Sensitive to Bad Connections

Reconnect starting with positive then negative.

One thing... If your last 3 doors works fine it's mean that problem is only in your drivers side. In VW like nickalxjoe wrote is air pump. So there might be an air leaking which you can hear. So if you can hear from where air running out try to fix this first.

get the key to work with the remote or it wont deactivate the alarm

94 Jettas have a anti-theft kill switch. It can mimik the starter or alternator. Lock all the doors with them closed, then unlock the drivers side with the key. Wait about two min then try cranking it. Should start up instantly, if not reset the computer.