W205 c63 software update
Got exactly the same issue after my car was updated a month ago... it's significantly quieter, and more noticeable when u lift off the throttle.
My stealer told me that it was an important update to resolve some transmission issues - I asked them to roll it back to the old version.
Anyhow, I find S+ the loudest mode now. Previously it was Race mode.
Hopefully my Rebellion Piggy will bring some sound increase back.
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But, I didn't service my car at all.
Not sure if this is related in anyway
The Best of Mercedes & AMG
I had an update a few months back, and the car drove kind of grandmotherly for a few days before it woke back up.
I just got married recently and at 44 kind of late. My wife said based on behavior she thought I was 30.
and she said she doesnt get what it is with the cars. I said it's the boy in me with his toys. She's getting used to me just being .. well me! And guess what, I am having a blast and don't want to nor will I grow up. She's learning to accept some things won't change.






