Left Rear door ajar...

[Hellz]

so this started this morning on me.

the H2 sat for 4 days without use until last night when i took it out for about 30 mins. thats it.

so this morning, heading to work, i get the door ajar message.
i walked about the H2 opening and shutting all doors.
i have opened and shut ( slammed) the door in question, but still get the message.

any thoughts?