Strange noise from under floor

[Vaughnt]

There’s a strange noise when the engine is running from under the floor near the oassenger seat - I’m not sure if it’s fuel tank or ad blue tank related or pump related but it sounds horrendous.

I’m going to either get Assistance out to look at it or take it into the dealer
Anyone else had issues

It’s a 2022 model year v300

 

[p.g.tattan]

Did you work it out? I have the same van and awful vibration noise on the same are at low engine speed

 

[p.g.tattan]

There’s a strange noise when the engine is running from under the floor near the oassenger seat - I’m not sure if it’s fuel tank or ad blue tank related or pump related but it sounds horrendous.

I’m going to either get Assistance out to look at it or take it into the dealer
Anyone else had issues

It’s a 2022 model year v300

Hi I think I have the same problem- did you manage to resolve the problem?

 

[Graham Carr]

Yes, same problem here on my 2021 300d AMG Line MP. I have striped every thing out and taken it to Mercedes service, it seems intermittent and from under the floor of the area directly behind the passenger seat, or it cold be in the seat belt mechanism behind the plastic cover. It’s difficult to tell.

If MB cure the issue I will post whatever I can glean from them

 

[Graham Carr]

There’s a strange noise when the engine is running from under the floor near the oassenger seat - I’m not sure if it’s fuel tank or ad blue tank related or pump related but it sounds horrendous.

I’m going to either get Assistance out to look at it or take it into the dealer
Anyone else had issues

It’s a 2022 model year v300

Did you get you vibration issue resolved?

Mercedes Stoke resolved my issue, apparently it was caused by air conditioning pipework.