You can enable the welcome lights to trigger as you approach or leave your vehicle with a distance-capable key. If this setting is disabled or you are not using a distance-capable key, the welcome lights are triggered when you lock or unlock your vehicle.
Press the vehicle symbol 
in the bottom bar and go to Settings.
in the bottom bar and go to Settings.Go to .
Turn the welcome lights on or off.
The welcome lights setting stays active until you disable them.