4g-tronic

  1. T

    M104 fast rattle/clicking under high load

    My e280 s124 generally runs very smoothly. I've put 500 miles on it since I first noticed this issue, without incident. However, there's a peculiar noise that emerges only above 4k RPM and at full (or nearly full) throttle. It's a rapid clicking or maybe rattling sound. It sounds like it could...

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