When i try and lock my car with the remote it does not beep to let me know that the car is locked. i press the lock button and it dosent beep. but some times it does beep a few sec. after. The alarm keeps going off ever 2 min of so. and for no aparent reason. i tried turning off the motion sensor by opening the door and holding the button by the driver side seat, but it's no use, it just goess off in another few min. should i disconnect the battery and reconnect of will that mess up the anti-theft on my radio system???? any ideas on how to get my car to ******* are greatly appreciated.. thanks guys!!!

SOURCE: No security system beep when vehicle is locked

check to see if your "interior cabin lights" fuse isnt blown it is a 15amp fuse one of the top two rows in your fuse box. i have a 2002 A4 avant and when that fuse blows my security beep doesnt make any sound but the doors lock.

SOURCE: Audi A3 2004 remote opens door then it locks straight away

drivers door lock needs replacing,if you have the central electronics checked it will give you a code,and i will possibley be that door,the microswitches play up in them quite a common fault

SOURCE: door locks not working properly.

one of the front door latches is out of adjustment or bad. when you lock it at the trunk try the front doors to see if they might still open when the alarm is set if so that is your bad latch. bad news is to replace it you will need to tear down the entire inside of door

SOURCE: Audi A4 1999 door-open sensor not working

Hi this could be one of two problems could be the drivers door catch/latch in the door cheapest one or the dash panel itself costly job

SOURCE: 1999 Audi A3 1.8T Electric Windows and Central Locking Won't work

will your passenger door open with the key and is it just one side that your windows are not working or both. if its just one side it might be your regulator motor in the door thats not working if its both it might be your central locking pump usually in the boot. however if both of them are working fine it could be that your key needs reprogrammed however i think the 1st 2 are more likely to be the problem.