Brake Abs Warning Light problems of the 2007 Mercury Milan

I was driving in town at around 30mph. My abs warning light came on. The car started making a strange noise. Then when breaking the back breaks seemed to be trying to lock up. Then the passenger airbag warning light came on. After this happened all my gauges including my speedometer, blinkers, headlights, rpm, etc. Became inoperable. I am not able to drive the car at all due to this issue.

I was driving home from work when I began hearing a noise from my passenger side tire when I would brake. I pulled over to see if there was a flat, but didn't notice anything out of the ordinary. I continued on the highway home and kept hearing noises when I would brake. I took the exit for my neighborhood; while I was on the access road slowing down to the speed limit, the passenger rear brake locked on me. I made it to a complete stop about 100 feet from the light at the intersection. After turning on the hazard lights, I tried to accelerate, but the car did not want to move. I ended up being able to move the car at a slow rate to the strip mall about a quarter of a mile away. I called for a tow, but all the ones I reached out to had an approx. Wait time of 2 hours and the dealership closed in 1 hour. While deciding what to do with the car, I noticed the abs light was on. I was about 5 minutes from home and decided to drive the car onward. I took the car at a slow rate to try and ensure nothing happen. When I turned onto my street, the passenger tire blew out and the abs light turned off. I drove the last few feet home and called a tow the following morning. The car is currently at the dealership in queue to be worked on.

While driving to work and then back home from work I cross over a couple of railroad tracks. Going over them rather rough one time, I noticed my abs system light engaged and came on. Everything appears okay, abs light goes back off so we continue driving. However, the brakes are extremely soft and often have to be pushed all the way to the floor to engage any real ability to stop the vehicle. We found that pumping the brakes seems to help their softness, but it is not a fix for the situation as the brake pedal will still return to the floor when the next need for braking arises. Then we will have periods of driving with no issues. But have had this same problem with the brake pedal re-occur with some mild road abnormalities. Since this is not an issue that was constant at the time, we learned a way to get around it by pumping the brakes to put air back in the mechanism. But now it is happening every couple of weeks. My husband was hit on our front fender by a gentleman driving the wrong way and the small 'tap' from the accident seemed to have retriggered the soft braking issue so the mechanics looked into it since we described our problems.