Ok it enabled after entering password. Don't know if it started.
user@user-ThinkPad-X60:~$ systemctl enable ModemManagerCreated symlink from /etc/systemd/system/dbus-org.freedesktop.ModemManager1.service to /lib/systemd/system/ModemManager.service. Created symlink from /etc/systemd/system/multi-user.target.wants/ModemManager.service to /lib/systemd/system/ModemManager.service.
user@user-ThinkPad-X60:~$ systemctl start ModemManager user@user-ThinkPad-X60:~$
