Bottas claims the team has managed to source the weak spot and is hoping a fix will be applied in time going into the second round of the campaign at the same track.
"I'm pretty confident the team has tried to do things to fix it ready for this weekend," said Bottas, who took the chequered flag on Sunday from Ferrari's Charles Leclerc, with Hamilton fourth after a five-second penalty was applied for causing a collision with Red Bull's Alex Albon.
"Obviously, it's limited in the regulations as to how much you can do and how much you can't when it's about the gearbox, but they've localised the issue and I've full trust they're going to fix it, just when is the question."
With regard to the team's approach to the weekend, starting with the first and second practice sessions on Friday, Bottas added: "We're running quite a few sensors to try and monitor what's going on and see if this issue will reappear.
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