computer cool down fan not working 2010 X5

What is your question?

2010 BMW X5 computer sits under the engine exhaust where the cool down fan is also located I was told that the fan is not working which can cause the computer to overheat Fan cost $180. and labor cost is $450. Does these prices seem correct and how often does something like this happen (fan stops working).

What makes this problem better or worse?

I was just told last week by a recommended mechanic

How long has your 2010 BMW X5 had this problem?

one week