I have a stumble at idle.
Bought some low mileage coils and wires.

Replaced both banks centers , was not getting any codes.
Now I do. PO305.

I am guessing. I thought it was left bank front to rear 1,2,3
right 4,5,6. ran an engine search and came up with nothing.

Update..I am an imbosole, I neglected to snap in the coil wire on the middle drivers side coil. That has to be the #5.

Steve

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Steve Danville
what i did myself.
CPS
rear shocks
MAS x 3.
SparkPlugs (twice)
Fuel pump & Filter
Window switch
replaced both failed horns with Honda horns.
Cleaned ERG Tube
Oil changes
Oil consumption Fix
Brake Pads
A/C Recharge
Anti-Freeze change X 2.
Front Shocks. Monroe. $90
Mercedes Warrenty Work:
Harmonic balancer,power steering clamp. Cat converters.Drive Shaft Bearing.s
Replaced Outer Lower Tie Rods and front lower ball joints at 156,000 miles