What is the security screen/code displayed on the GPS screen?

What is your question?

I went out to the van and put the key fob in and the man didn't start. It started making clicking noises and the lights on the dashboard started flickering. The key fob was stuck and I turn the van on or turn it to the off position. My husband got the key fob out and opened the hood and looked at the spark plugs. Some were clicking and vibrating. He ended up disconnecting the battery to make it stop. Later we went out to try it again and used the regular key instead of the key fob. This time the GPS screen displayed "security screen" and wanted a security code punched in. If we try to turn the van on it goes back to the clicking. Also randomly the other day we came out to leave and the van was in drive when we got out there and not in park .... don't know if that is related in any way or not.