You are all right. Once the keyfob inside of the car, the doors do not lock ! Even the central locking button does not do anything ! I tried leaving the key on the central console, in the ignition, with working engine, in a purse, etc - same result. I guess it is "smart"...

I remember reading on this forum about someone leaving the key in the purse and locking herself out... that is why I've asked the question.

Case closed !

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His : 2013 X5 3.5d Deep Sea Blue/Black/Aluminum with ALL packages, 20" 214"s, running boards, Adaptive Drive, Spare Tire, BMW Apps
On Order : 2016 X3 3.5 MSport Silver/Mocha with DHP, CW, Prem, Tech, DA, Lighting

Hers : 2015 328xi MSport Silver/Red

Prior:
2008 X5 4.8
2011 X5 3.5d
2010 335 xDrive
2013 335 xDrive