Kimi Raikkonen admitted that the new brake-by-wire system is the major reason has struggled to come to grips with his Ferrari so far this season.
After rejoining Ferrari four years after leaving the Maranello team, the 2007 World Champion has been struggling with the handling of the F14 T so far this year.
The Finn qualified in 12th position at the year's first Grand Prix in Australia last week and then finished seventh in the race.
"We identified some general problems which we have to tackle in Maranello and there are other aspects linked to the set-up on my car to do with the brake-by-wire system," Raikkonen told Autosport after the race in Melbourne.
"Getting this device working correctly is definitely something that contributes to the general feeling from the car, because it has a great effect on corner entry.
"Having said that, the F14 T improved right through Friday and Saturday and not getting into Q3 was not down to the competitiveness of the car."
Nevertheless, Raikkonen remains optimistic that he will be closer to the front of the grid at the Malaysian Grand Prix next week.
"I've been in this game for quite a while now. I can say this is definitely not the first time that I've gone through a difficult first race weekend," he continued.
"I'm sure that, if we work in the correct way, then right from the next race in Malaysia, the results can definitely be better."