I have just charged the battery on my 1996 r reg audi a4 now central locking has disabled as has alarm system! any ideas

if unable to turn key in boot then you will have to drop the seats down inside and climb in. remove the rear door panel and move the release mechanism manually. Make sure the vac pipes are connected and the mechanism isnt siezed.

Sounds like your security system thinks your stealing it. Try locking and unlocking manually. Jump starting can sometimes damage electronics not usually a good idea. It is better to disconnect the battery and charge it then reconnect it. You may have blown the EBS fuse which may be mounted ont the ebs computer.

you need to reset the alarm system,with the remote/keys,if you dont have the book get back to me...how about the radio code....

alarm sensors work really hard on a car and does bottom out over time. it sounds to me that a faulty sensor is messing around with the security system. I know of people that bypass this by installing a new aftermarket system which is more advanced and uses the door mechanisms and transponder key. good luck

unlock car with key.hold over for 30 secs.then lock car,hold key over for 30 secs,then unlock using remote,
you have to reset central locking/alarm system every time you disconnect battery.
vw/audi have a system that is peculiar to them,i love em...

do you use keys or remote to lock it ??
do this anyway.. lock car with key and hold key over for 30secs.the windows may go down, then release and wait 30 secs ,then lock car with remote holding button down for 30 secs,this resets the central locking./alarm system.also check battery is fully charged as this will have an effect on all the above

The 1996 A4 uses a central locking system which is vacuum operated. Each door has a vacuum servo which raises and lowers by air pressure created by the vacuum pump. The pump is located in the trunk right behind the passenger side tail light.

Either the pump is faulty or the vacuum lines leading to it are damaged.

This problem may be best left to the Audi dealer to troubleshoot as this is very model specific and not many small shops will have experienced this problem.

The humming is the central lock vacuum pump running..You either have a leak in one of the lines, or one of the hoses has popped off

Find where your fuel pump relay is and check for power there. Most alarm tech's and alarm system dis engages the fuel pump at there relay's.

Simple things to check is the fuse first then go for the relay and if everything there is working properly, it could be your alarm may have gone bad or your fuel pump it self.

Good luck and hope this helps

reset you computer, do this by removing the positive battery cable for 10 mins.