Sergio Perez is desperate for his team to fix the problem he blamed for his Q1 exit in British Grand Prix qualifying.
The Mexican is stuck in a rut of underwhelming qualifying results. At the five races since he qualified on pole in Miami in early May, he has failed to reach Q3 in each of them.
This time he struggled after a late red flag in Q1. Perez had just pitted for fresh soft tyres when Kevin Magnussen stopped on track with a car problem.