Christian Horner says he is not willing to drop his complaints about Mercedes' wing despite the FIA declaring it legal.
This season Mercedes have introduced the DRS-activated 'W-duct' rear wing which stall their car's wings for better straight-line speed.
However, rival teams, especially Red Bull and Lotus, have voiced their concerns about the legality of the device that has twice passed scrutineering with the FIA.
Speaking in Australia, FIA technical director Charlie Whiting said: "It is completely passive.
"There are no moving parts in it; it doesn't interact with any suspension. No steering, nothing. Therefore I cannot see a rule that prohibits it."
But despite Whiting's all-clear, which was again given in Malaysia, Horner is not willing to drop the matter.
Asked whether he would on Friday, the Red Bull team boss said: "Probably not. I am not the only one, other (team bosses) here are after clarity going forward.
"Is it something accepted as a clever innovation, and hats off to Mercedes if it is, or is it something that is not permissible moving forward?
"That is the most important thing to resolve and it would be good to come out of this weekend with that clarity."
Schumi: Wing boost is not that big
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