Car Alarm keeps going off on 528i (1999)

Hello Cathy

It does indeed have keyless entry. It needs reprogramming when you get a new remote. Also if you disconnect the battery. Usually a local car alarm fitting shop, or an auto-electrician will do it. Plus of course a Ford dealership.

https://www.google.com/search?q=Keyless+Entry+Remote+System+1999+Ford+Windstar

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Go on youtube and put in how to reset your car key after renewing key fob battery good luck colin

That's what happened to me when my battery died I opened the door with the key and tried to jump it and the Alarm goes off. then i put a new battery in the car and the problem was solved. Good luck

There should be an alarm fuse, you can pull that to shut it off. A GM dealer should be able to set you up with a new keyless entry remote. I'm not sure which fuse it is, but the service manual should tell you. If not, the fuse block cover may tell you as well. Good luck

Same here... I have a 1998 Toyota Avalon XL. My car battery died. Replaced my car battery, but found out that when you unplug and plug the car battery with this car it engages in security mode (I have factory car alarm). This disables the engine and wont let you turn the ignition aka start the car engine until the remote (keyless entry) "UNLOCK" is applied. My remote is also lost so I cannot disable the alarm.
The only thing I can think of to do is unplug the battery again to disable everything (car alarms are annoying...) and call the dealer to pick the car up and perform the diagnosis. Most likely they will offer you another keyless (ugh... expensive) and/or you could ask to disable the factory car alarm.
I know thats not much help but it seems to be the only option from what I researched currently....

lock the car and hold key over for 30 secs then press/hold unlock button on remote for 30 secs,this should reset your keyless entry/alarm/central locking.

usually after opening the door you can deactivate the alarm by pushing th unlock button or simply insert keyy in ignition and turn it on.

Unfortunately, the keyless entry remotes and OE systems usually require a dealership to service them. Sounds to me like they need to re-set the alarm

You might try Opening the Door and Opening the Hood and Disconnecting the Battery. This should reset the System. If this is the Factory Keyless Entry, There is a Relay and a Fuse for this. Check them and see if they are Bad or Blown.

Lock all the doors from the inside (with all the doors closed), unlock your driver's door by manually lifting the lock, then press it back down after you are out - this will prevent the alarm from sounding when you use the key to unlock the door.