2018 Nissan Sentra lighting problems

The contact owned a 2018 Nissan Sentra. The contact stated that while driving at 20 MPH, the exterior brake lights were inoperable which caused another vehicle to rear-end her vehicle. The contact's vehicle then crashed into another vehicle in front of hers. The air bags deployed upon impact. The contact suffered a concussion and later received medical treatment at the hospital. A police report was filed. The vehicle was towed to a tow yard and deemed totaled by the insurance company.

I bought a 2018 nissan sentry in november of 2018. In the past month the brand new car has not been starting. It has been leaving me stranded at work and at the store. I keep taking it to the dealer ship and they replace the brake switch and battery. However the car is still not starting on me. The dealership replace the brake switch again but now they are waiting for another part. This is very frustrating because it's a new car and to me everything in the car should be new.