2007 Jeep Compass electrical system problems

Tl* the contact owns a 2007 jeep compass. The contact stated that there was liquid on both front floorboards of the vehicle. In addition, while driving at 30 MPH, another vehicle attempted to merge into the lane and crashed into the driver's side of the contact's vehicle. The air bags failed to deploy. The contact sustained minor neck inquiries that required medical attention. A police report was not filed. The vehicle was not diagnosed, but was taken to a collision center for repairs.

Check engine light came on paid $800 dollars to resolve issues, I am still having problems with check engine light. A few sensors(oil, heating etc) were replaced, o2 sensors were replaced. I was told that it could be the vehicle's computer system. This is creating a very serious headache problem. I tried with numerous car repair shops and they don't seem to pinpoint the problem.