Moveoverlandsha

After spending a few grand, my shop just told me my 2011 R350 with 90K miles has the Balance Shaft issue. Any experience on cost to replace balance shaft? Check Engine keeps coming on, so will not pass inspection like this.

BlackML550

The balance shaft issue that is commonly noted occurred on engines produced up until 2008. The document attached highlights the Engine Numbers that were within the range of impacted engines. A 2011 model should be well outside that range, assuming its the original engine.

Now, that doesn't preclude your engine from having the same problem, but don't just accept its a balance shaft problem because "they all have it". They don't, and further diagnosis might yield something else. The bulletin attached clealrly specifies the problems for the M272. Compare your engine to the stated range.