Haas boss Guenther Steiner has revealed the team suffered a GPS failure during a crucial point of the British Grand Prix which left it unable to communicate with either driver.
Esteban Gutierrez finished 16th at Silverstone, with Romain Grosjean retiring after just 17 laps. It was around the time of Grosjean's retirement that Haas' power problems started, which left the team in a "panic" on the pit wall.
For the midfield runners the switch to intermediates and then slick tyres were crucial in determining the running order but Haas' pit wall problems meant Gutierrez did not come in at the ideal moment for his second stop.