The new banknotes, released last month, bamboozled the machines, which were unable to marry the imagery on the new notes with what they were programmed to accept and classified them as forgeries.
The council's seven affected machines were in its three parking buildings, and they still accepted credit cards, eftpos cards and other forms of cash.
Reprogramming of the affected machines was completed yesterday, Dunedin City Council fleet and parking operations team leader Reece Smith said.