2004 Mercedes-Benz S430 4MATIC Q&A

2004 Mercedes-Benz S430 4MATIC Question: 2004 s430 4matic noisy engine Help?

have A 2004 S430 4matic It has Noisy Engine Like Knock Sound Is That Common For This Car? -
Answer 1
engine knocking is not common and almost always indicates something wrong. find an MB specialty repair shop ASAP. -
Answer 2
I had a MB430 and the same problem. I lucked out as it was just the serpentine belt tensioner taking a dive. Good Luck! Lance -
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