01 X5 3.0, Battery, Alarm, Warning lights

[Mongo]

I have been experiencing many weird problems. Something was killing my battery. After the battery finally developed a bad cell I replaced it. While dealing with the constant battery issue my alarm started to go off regularly and even a few times when I was driving. Now the Anti Rollover warning lamp is on and doesn't go away(Its a triangle with an arrow wrapping around it). Everything I read suggested that the Alternator could be the culprit. With the prior battery problems it seemed to make sense. I replaced the Alternator today and the light hasn't gone away?

I don't know if this is related or not but last week my brake light came one, the pedal is soft and ABS isn't working.