Mercedes Workshop | Code 606

Just saw Code 606 on my ‘17 E300. No CEL, car drives fine. Here’s what I learned:

= Time-dependent service reminder. Unlike mileage-based codes (e.g., A or B service), 606 triggers after a set period (usually 1 or 2 years) regardless of how much you drive.

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If you’ve seen “Code 606” pop up on your Mercedes diagnostic tool, don’t panic. It’s not a drivability issue—it’s a maintenance minder. Just saw Code 606 on my ‘17 E300

🔁 Usually means: Brake fluid flush, coolant, or other calendar-driven maintenance.

Code 606 is Mercedes’ way of saying: “Time for a scheduled service based on time elapsed, not just mileage.” Think of it as a calendar-based nudge for tasks like brake fluid flushes, coolant changes, or spark plug replacements. Unlike mileage-based codes (e

Hope this helps someone else searching “MB 606.”