When switching on my car this morning, i got the message Car Operative - Press Stop on the dashboard. The car wouldnt start nor would it lock. After about 1 hour it was fine but still called the AA who did a battery reset and said i should take it to the dealership to give it a once over.

Any idea what could cause this?

I have 2009 Ford Mondeo 2.3 Titianium X Hatchback Auto