Can I submit receipts to my insurer for home repairs that I do myself?

The key fob for my 2018 Dodge Durango is getting a little jumpy. It usually won’t unlock my vehicle on the first try so I’m thinking it’s time for a battery change. How do you replace a key fob battery for a 2018 Dodge Durango?

I drove over a giant board sitting in the middle of my lane when I got onto the interstate, and I saw it too late and couldn’t slow down. Nothing seemed wrong when I looked under my car later, but now when I’m driving it doesn’t feel right. I think something under my car does need to be repaired. How much would this cost?

Do you need insurance when flipping cars? My friends and I are going to start doing it soon. Is there a particular type of coverage we need?