replacing rear ABC shocks on '03 SL500
 

The dealer said these need replaced and wants over 4 large to do it. I've replaced rear shocks before on other cars and was wondering if it's something I can do myself. I'm very good at repairing my own cars. However, the ABC system has me a little concerned. Do you need the fancy diagnostic equipment to bleed the hydraulic fluid afterwards or does it self bleed?