2000 vw golf alarm goes off when I start the car. Remote stopped working, so I replaced the batteries. Still DOESN'T work. Manual key opens and locks driver door, but DOSE NOT disengage the alarm

USA car,not told and matters huge.(out side USA are different cars()
check fuses
scan the car, using OBD2 scan tool.
only have 1 key
only have 2 FOB
car came new with 2, lost second set< never have just 1.
does car have IMMO ?

Try disconnecting the battery to reset.

use the car key itself from outside the vehicle with everything closed: use key in drivers door outside door lock and manually lock and unlock the door. check if fixed, may have to do a few times. i do believe the vehicle is in theft mode.

Here is a useful link. Go to it, and look for the text, "Disconnect the battery" ... Read the steps to solve your problem!

www.justanswer.com/vw-volkswagon/1y9u8-reset-anti-theft-alarm-system-1995-vw-golf.html

i have a 2002 vw cabrio and won't start after i took out the battery everbody is telling me that anti-theft is lock mode how do i rest it so i can start my car

I'm not sure if you have an aftermarket or factory alarm, but try this: hook up the battery and try unlocking/locking the door with the key. If you have a remote door lock, hit unlock/lock on that. I have come across a couple of cars this was all it took to stop the alarm, never tried with a VW though. Hope it works, good luck!

check door switches remove 1 at a time and unplug it once you find the bad switch lights will go out
un plug 1 at a time

try changing the drivers door lock

If im not mistaken,your car should have an alarm reset/override.Below the steering column,on the dash should be a slot where you put your remote transmitter to deactivate the alarm.If that works,you then need to have your remote checked and coded by a vw dealer.Good luck.

the alarm itself could have an internal earth problem.... pull out fuse from alarm or disconnect alarm and see if fuse still blows