I’m curious as to a funny buzzing noise I hear sometimes after I shut the car off completely and exit. It seems to come from the rear driver side of the car, buzzes like a small motor running and I hear a lot of fluids popping in the same area (this might not be connected). I’m just curious really as to what the buzzing noise is?
2006 S-Type, 3.0

 

Buzzing is probably the EPB. It's automatic UNLESS you press down the brake paddle with your foot on the brake and keep both that way until after you've removed the key from the ignition lock. Try that and see if there's no buzzing. Wouldn't hurt to have the windows down as you experiment. You can then apply the EPB by hand if you pull up the paddle.

The fluids - heck, there are lots of pumps and motors!

 

lol I was wondering the same thing! It dosnt happen all the time....but for me its the drivers side rear tire....it will buzz like that for a couple min....

 

It's probably the GYRO compass winding down after you turn off the electrics. I used to fly an aircraft and that's exactly what it sounded like.