Buying 2003 S430 4 Matic 60k miles Help!
 

I own a 2000 ML430 and it has 110,000 miles on it, it has gone through all of the most common problems such as window switch($80), power steering clamp($15), a/c aux fan harness($50). I fixed all these problems, changed spark plugs($90), oil change($60), serpentine belt($40), F+R brake pads($150). I do these all myself. Pretty simple and no need to use STAR disgnosis system.

For 2003 S430 4 MATIC, what should I expect? Can I do an oil change myself? Change the brake pads? What are the most common problems that the S430 has? Are these DIY fixes similar to the ML? I heard a lot about the air suspension, are the bugs fixed in the 2003's? Can I change the air pump myself?
I heard the cost to fix the air susp is like $4000... is that true?

Please help before I purhcase one :)