Syntax question: How to enable Bleutooth via ssh command_line?

Ok, trying to cut down resources, I disabled Bleutooth Hassio Add-on.
rebooted, and this follows:

2018-05-31 22:58:55 ERROR (MainThread) [homeassistant.components.device_tracker] Error setting up platform bluetooth_tracker
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/homeassistant/components/device_tracker/__init__.py", line 183, in async_setup_platform
    disc_info)
  File "/usr/lib/python3.6/concurrent/futures/thread.py", line 56, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/lib/python3.6/site-packages/homeassistant/components/device_tracker/bluetooth_tracker.py", line 72, in setup_scanner
    for dev in discover_devices():
  File "/usr/lib/python3.6/site-packages/homeassistant/components/device_tracker/bluetooth_tracker.py", line 50, in discover_devices
    lookup_class=False)
  File "/usr/lib/python3.6/site-packages/bluetooth/bluez.py", line 26, in discover_devices
    device_id = _bt.hci_get_route()
OSError: [Errno 19] No such device

Hassio panel isnt connected, failed to initialize… So, how to re-enable the Hassio add-on, without the Hassio panel.

I cant find the correct syntax.

Must be in the lines of: hassio addons start core_bluetooth_bcm43xx ?

forgot to disable the bluetooth device_tracker …

still, would love to know the correct syntax, cause Hassio still wont load, and need to enable MariaDb too…