I had that happen when I plugged my app installed iphone into a BMW loaner. It auto started nav to last destination I had on the app. Not once, every time I got in the car. I think it's an app setting.

__________________
Redpoint

2016 xDrive50i

2006 Sapphire Black X5 4.8is
Body color matched Kidneys and hood vents

2005 Alpine White 330cic
Performance Package
Premium Package
Cold Weather Package
Foose 19" Rims

1987 Ducati 750 Paso