Hi Norm...I've attached a link to the W211 tech articles page. You'll be able to find info on anything/everything related to the W211 if you're choosing to go the DIY route. I hope this will be useful for you in the future. Best of luck!

Mercedes W211 Tech Articles - Mercedes-Benz E-Class W211 (2003-2009) Technical Articles - Pelican Parts


-Dmitry