Is this ticking normal for M157 engine?
This was in "Park" with a warm engine after a 30 minute drive. Half way through, I revved it up slightly and it seems to track the engine RPM. Do you guys hear this with your engines? Should I be concerned? Thanks for your help, guys.
If you still have warranty, you should take it to the dealer.
https://mbworld.org/forums/w212-amg/...se-2015-a.html
Last edited by timm206; Oct 14, 2019 at 01:42 AM.




I think the oil change suggestion could go a long way toward quitening your engine.
Good luck.
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Hello, any idea what is this sound?
Hello, any idea what is this sound?
Hello, any idea what is this sound?
Mobil 1 0w40 is a great oil but it can be noisy. I've always ran the Castrol 0w40 (made in Belgium) but it was temporarily not available in 5L jugs for all of last year in my area. Now that it's back I'm all stocked up!
Mobil 1 0w40 is a great oil but it can be noisy. I've always ran the Castrol 0w40 (made in Belgium) but it was temporarily not available in 5L jugs for all of last year in my area. Now that it's back I'm all stocked up!
https://youtube.com/shorts/tToz1TlMMN4?feature=share
I’m guessing it’s normal? Noticed it with the windows down in the drive thru. Tap tap tap tap.
I found an old Tasos video and even he couldn’t say what it was from. Tons of comments with people who have the same sound.
Also found an ML63 thread on this too.
https://mbworld.org/forums/ml63-amg-...ml#post8798126
ETA: I just noticed something with this sound. Only can hear it when the vehicle is in R or D. It goes away when it's in P or N.
Last edited by CZ 75; Jun 16, 2023 at 03:39 PM.

I'd say it's oil pressure related but also could be injector related. I say this because nr3 injector failed and it boosted that same sound before it was replaced and after that it got quieter. This coming week I'm replacing all injectors and plugs and will let you guys know if it sounds better.





