It has been a problematic start to the year for the McLaren-Honda team, with their MCL32 struggling during pre-season testing recently, finishing bottom of the time sheets.
Drivers Fernando Alonso and Stoffel Vandoorne found it tough getting any meaningful time on the track in Barcelona due to a catalogue of technical issues.
It is not the first time McLaren-Honda have encountered problems with their partnership, now into its third year, having been dogged by mechanical concerns right from the start.
McLaren have grown frustrated with the issues they have had to deal with due to the Honda power unit and have reportedly contacted Mercedes to discuss using their engines.
However, Hasegawa says he remains convinced McLaren and Honda will continue working together for the foreseeable future.
"Of course the situation we find ourselves in is not what we hoped for when we returned to Formula One, but we are still 100 per cent committed to our future in the sport and our relationship with McLaren," Hasegawa told Autosport.
"We believe in this partnership as does McLaren, and in order to move forward it is important for us to work as one team and overcome the situation together.
"The priority is to maintain honest and open communication, and to continue strengthening all relationships between Honda and McLaren despite the difficulties we are facing. This is not a short-term project for us."