REPAIR DETAILS

Believe it is the braking sensor. The dash indicator came on saying "BRAKE SERVICE NEEDED SOON" out of nowhere as I was pulling in to park, then the car threw itself into neutral and wouldn't switch into any gears. Pushed it to parking spot. Bit of oil leak. Please help. Without too much detail, this vehicle is pertinent to upholding the little bit of normalcy in a life that has recently been turned upside down. I hate to say, but I am desperate. Sorry for the sob story and thank you in advance for your integrity and assistance!