My Fusion (06 reg) does the same thing with the blowers so i'm hoping it's normal :) seems to be the same on my Dad's Fusion 2 as well. On locking the car your indicators should flash and the interior lights should dim/switch off but when you open the car your indicators should flash and your headlights, tail lights and interior lights should light up for roughly 30 seconds to help you locate your car in car parks, get in and sort your seatbelts, etc. One of the things I also didn't realise for a few weeks of owning the car was that when opening and locking the car it's best to press the button twice it seems to double lock the car somehow plus my lights seem to flash on the second button press :) just something to try :D Hope that helps you :D