Mercedes team principal Toto Wolff has warned there are "no magic bullets" to fix Lewis Hamilton's problems from Russia.
Hamilton was a distant fourth in Sochi, finishing over 30 seconds behind team-mate and race winner Valtteri Bottas and losing a little more ground in the World Championship battle with Sebastian Vettel.
But Wolff has said that they will only be able to work on Hamilton's problems through hard work and commitment.
"We have spent our time since then unpicking what happened to understand why we couldn't get the car in the right window so he could feel comfortable with it – there are no magic bullets to understanding that, just a lot of hard work and attention to detail," said Wolff.
"We must give him the tools he needs to do the job in the next races and that will be a big focus for us."
Wolff also revealed that Mercedes are working around the clock in order to help meet their targets this season.
"The prevailing feeling is that there is lots of homework to do to come back stronger with a car that can perform on a consistent level every weekend," added Wolff.
"I have the feeling that we are moving in the right direction but we need 24/7 shifts to achieve our ultimate targets.
"Barcelona will be interesting as our pre-season was not spectacular in Spain. It's a very different track to Sochi and we'll be running with harder tyres.
"We are taking this season one race at a time. If we deliver the best possible work from Friday onwards, then we'll be ready to win and fight with Ferrari."