The New google map feature allows you to save your parking location on the Map. 

This is completely different from the  google maps automatic parking detection, which figures out where you parked without your intervention.

This New amazing Feature, first went live as part of google maps (Beta Version, android only) In March 2017; has Relaunched and is now available on Andrioid and iOS.

To activate the feature on Andrioid tap the blue dot and choose save your parking,” and a lebel will appear on the map showing you where you parked. 

Google
Google

You can decide to add a note – A short description, that would serve as an instruction (describes how you parked).

It also comes with a timer (15 minutes reminder), you can also send (to your friends) and save an image of your parking location. 

On the iOS, it’s pretty much the same procedure; all you need to do is tap the blue dot and follow the instructions through (same as Android) 

To get the new feature, upgrade your maps to the latest version.