If you were targeting a Patriot battery, you would target the radar because it's the most expensive piece, probably the most fragile, and destroying it puts the battery out of commission.If a battery with 6 launchers and 2 radars is "damaged", then all it needs is 2 launchers and 1 radar to be considered operational. No one has defined the damage. There's nothing reported from the Russian side either. Pictures or it never happened.
Aside from that they said the damage was fixed in the field. So it's likely superficial damage caused by either the errant PAC-3 or falling debris.