Red Bull have officially lodged their appeal against Daniel Ricciardo's disqualification from second place in Sunday's Australian Grand Prix.
The Formula One champions' protest arrived at the Paris headquarters of motorsport's governing body the FIA shortly before the 96-hour deadline.
Red Bull officials had made it plain they would challenge the ruling ever since Ricciardo lost his runner-up spot to Nico Rosberg in the Melbourne stewards room on a technical infringement.
Ricciardo's fate now lies in the hands of the FIA's appeals board, which will sit in the next few weeks.
Red Bull boss Christian Horner has absolved Ricciardo of any blame in the bungle.
After a marathon hearing, stewards in Melbourne said the 24-year-old's car was not in compliance with regulations after he exceeded the maximum fuel flow, or rate of fuel consumption, of 100kg/h.
The appeal is believed to be based on the accuracy of the fuel flow meters issued to the teams.