It takes 30 minutes to a skilled person with DIS/ISTA to diagnose the problem with the fan.I am sure there are more than few of those people in your area that do what I do(mobile diagnostics and repair,no overhead expenses to cover)or even at least one shop with a knowledgeable and honest people.There may be a more serious problem with the drivetrain and the fan only the telltale sign not the problem itself.
There is definitely a difference between the cars built in the US and Germany,but also '07 could be the worst year for having E70.