CL 550 4MATIC (216.386) V8-5.5L (273.961) (2009)
^ Check all affected CAN hubs, connectors, and ground terminal points (Figures 3 and 4).
6. Repair the wiring harness using end soldered sleeves and a heat gun.
Repair instructions notes:
^ Repair wiring harnesses are longer than necessary to ensure compatibility.
^ Shorten the wires if necessary and insulate them with end solder sleeves.
^ Do not cut off the line directly behind the crimp.
^ Remove unnecessary wire connector pins on the CAN hub.