Battery/generator problems with W220

Hello, I drive an S-Class (W220 400CDI BJ 01 Model 2002) to all I had yesterday morning during the ride the volgende problem. On the display appeared once the symbol (BATTERY/GENERATOR REQUESTS) and the AUTOMATIC LIGHT went off. The car drove but continued to have a short hand manuel turned on passing light and the light went home as quickly as possible. In short, all systems shortly before the failure. BATTERIE TOT. New battery in made car also starts well. A diagnosis was made error could not be fixed. AUTO… LIGHT still doesn’t work. I believe that the LIMA is broken or (the regulator just USE). My question is: 1. You have to build the whole front outside? Just as I saw it. 2. What about the water cooler or climate cooler? Extensions or how? 3. Does climate have to be filled NEW? etc…. Thanks in advance guide EURE proposals Merry Christmas and a good slide into the New Year