A Mercedes representative must meet the British Grand Prix stewards before the next practice session after the squad covered Nico Rosberg's car when it was brought back to the paddock on Friday.
Rosberg stopped on track due to a suspected hydraulic leak in the gearbox and his car was taken back to the paddock, where Mercedes mechanics covered the stricken car.
Teams are not allowed to cover cars unless they have sustained accident damage on track.
"During P1 at 10:28 members of the Mercedes AMG Petronas F1 Team covered the underside, rear diffuser area and the front wing of car number 06 when it was brought back to the paddock after it stopped on the circuit due to a mechanical problem," read a statement from FIA technical delegate Jo Bauer.
"As the car hasn’t suffered any kind of accident damage this in my opinion is a breach of Article 27.4 of the 2015 Formula One Sporting Regulations and I am referring this matter to the stewards for their consideration."