CLS 55 AMG (219.376) V8-5.5L SC (113.990) (2006)
7.
Open the (gray) secondary lock in the SBC connector housing (A, Figure 9) by sliding the lock in the direction indicated by the arrows (Figure 9)
using a small screwdriver.
8.
Remove cable tie (arrow, Figure 10) securing ground wires (A) to SBC connector housing (B).