BMW Repair: 2000 528i abs,brake,and dsc light all come on, bmw diagnosis, torx screws

Question
QUESTION: I have a 2000 528i bmw and the dsc,abs,and brake light intermittingly come on I
was told it was the abs unit. Any other info would be appreciated
ANSWER: Tim, usually is the DSC control unit that is faulty.
Unit must be coded.
-Evan

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QUESTION: can I do this procedure or must the dealer do it?  Where is the dsc unit located?
How is this coded or replaced  

Answer
Tim, The DSC control unit is the black plastic portion of the unit with all the brake lines going to it. It has six torx screws and a big electrical connector. It is located in the front of the engine bay. Only the dealer can code this or an independent that has a BMW diagnosis machine with software. It will be expensive.
-Evan