2009 XC70
Experiencing intermittent buzzing sound from the right rear passenger side of car on the underside. I have a Youtube video showing where it's coming from and what sounds like:
Thanks in advance

5/2/18 - Does anyone know what is causing this sound on my car?

 

It's "gotta be" the fuel pump.
Identify the fuel pump's fuse and when your car next makes the noise, pull it and see if the noise goes away.

 

That's a fuel pump with a bearing about to seize. Have it replaced before it leaves you sit.

 

Where is the fuel pump located on my 2009 Volvo XC70? I've pulled the rear seats and can't find the access panel!!

 

see if this helps

 

Did you ever find the access panels for your fuel pump? I have a 2011 XC70 which has the same body and I need to replace the fuel pump. I am trying to figure out, without having to take the seats out, if it has access panels.