Mercedes offered paired breakout leads for CAN diagnostic use on a various series of vehicles, including W202, W208, W210 and W220. These leads permitted connection to CAN B (220 580 00 99 30) and CAN C (220 589 00 99 31) X30 connector busbars located in the passenger door sills.

Unfortunately, neither of these wire sets fit the X30 connectors on a W221. Is there a dedicated lead set for the 221 chassis CAN and, if so, the part number? Thanks.

FWIW, after a bit or research - no X30 connectors are located in the door sills of the W221. A variety of X30 connectors are present throughout the interior of the vehicle (e.g., potential distributors for central CAN - X30/20; drivetrain CAN - X30/21; interior CAN - X30/32; interior CAN - X30/33; interior CAN - X30/34) but none of these distributors are located in the door sills.