Nissan Primera P12 ignition key cover column

I would not be unduly worried about the hole. Looking a little more closely at the breather I can see in fact it extends from the tank adjacent to the filler pipe connection cap to near the top of the filler hose near the filler cap. It is a pity you can not get you computer to open the manual. I would not worry about water of condensation. It probably is visible with the cap off and when I fill my tank to absolute full I get fuel running out of it.

Thanks again, The bleep problem from the seat sensor has gone away, so all is good. Can I ask , where do I look to check the breather pipe from the petrol tank, I'm thinking did the mechanic locate it or not and just drilled a hole. I would like to check myself if the breather pipe is not blocked , if possible. I will say that the car is going like a dream now, Smooth ,no jerking when overtaking and steering easier because he changed the servo fluid.Another question, how important would it be to change the auto transmission fluid, its not been done for years is my guessing, But the gearbox is always been great. Is it an easy job to do yourself. I know , its important to use the right oil.