Capable of a tune up on a 2000 S430?

[engatwork]

I've been turning wrenches for awhile now and have been helping folks with maintenance and repair of their MB vehicles. Up till now I have not worked on a MB newer than 1995. One of the guys that I help from time to time recommended me to a friend of his with a 2000 S430 and the friend called last night inquiring about helping him out. He said that he thought it needed a "tune up" and something about the suspension. Unless the suspension is something really different I feel like I can handle whatever comes my way with it but what is this about a "tune up". I'm thinking just get the service guide for the car and pretty much stick with it based on the mileage. On the other hand I am considering turning the work down because I'm not too sure I want to mess with something that new. Do you need special code reading devices to get the read out on these cars or can it be done through the radio indications? Thoughts/comments are appreciated.