Went to buy MB II scanner, got no responce from the company witn many phone calls and 2 E-mails, so am not going to do business with a company that is that lax with a sale inquiry. did try 4 other scanners including Launch and could pull no codes. I did clean all grounds; and relay, fuse,front SAM, and ESP/ABS connections, as well as battery connections. started it up and had a christmas tree panel! let it run for about 5 mins. shut it off, restarted it clean panel. took it to Mercedes; they found the ESP/ABS control module to be dead. Said it was the cause and also blocking the communications thru the other sam's and coulden't go any further in diagonestics until it's replaced. $1900. for the part! I found a complete brake unit for less than 200. used, will be here in a couple of day's. Any procedures recommended in changing the control module before I get at it. Thank You all in advance.