Rear hatch unlocking on braking x 2 times

[Redryder18]

On this past Sunday, 2 times on the same drive the rear hatch unlocked at low speed on braking. Cargo area empty, no mats or things blocking the striker or loop.
Has not recurred. Ideas?

 

[mojo]

Is it fair to assume that you mean "unlatched" rather than "unlocked"? I.e. it comes free of the latch and would open if you lifted it without touching the handle? If so, I would think that it's probably a slight misalignment of the latch, and that it is not fully closing, so a bit of bouncing about as you go along frees it?

If you actually mean "unlocked" I don't know - by default cars over here are not (as far as I can judge from mine) set to lock themselves as you drive along - but I know that an i3 can be configured to do that (and it may be the default setting in some countries).

 

[EvanstonI3]

Where was your Key Fob during this time?
Unless you have an early model with a fob that unlocks the Frunk, the later models (2015+?) have the i8 image and a button to unlock the rear hatch.
If the fob was in your pocket, you may have bumped that button.