2000 270 CDI W210 Battery/alternator red warning Not starting ??????

I added a new battery with no result. ??? It is dead and the display says contact mercedes garage !
The warning comes up with ac "ding" when the ignition is turned on :
"Battery/alternator contact mercedes garage "
Any ideas ?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.