Its outspoken defence follows a complaint from Tim Jones, commercial director of Bethell Fleet Services, about his own Audi A6.
His vehicle was serviced at an independent dealer, but the garage was unable to turn the service warning light off. This could only be done by an Audi franchised dealer, which said it would charge £30 for the work.
A spokesman for Audi said: 'Audi does not in any way hold a monopoly on the information or the technology required to reactivate this new servicing programme in any of its vehicles.
'Any non-approved service agent with the correct technical information - which is in no way restricted by Audi UK - can carry out the necessary work, but is likely to impose a charge.
'As Audi Centres are also independently-run businesses, Audi UK cannot dictate what each charges for services rendered. Audi UK apologises for any confusion which may have arisen surrounding this new technology and its implementation.'