First time owner of BMW

[zilverz]

Hi everyone,

I just bought a used 2004 X5 4.4i for $19K with 69K miles on it. I think it’s a fair deal right?
It has Nav with premium/cold weather package and panoramic roof.
The car looks clean in and out and runs great when I performed test drive.
Previous owner told me he has done all the routine maintenance work... but besides of that is there anything I should look in to for this age of X5?
The navigation screen displayed very yellowish orange and wondering if that is normal... which version of navigation computer unit do we have for this year of X5?
Any advice would be great.
Thank you in advance.
John