Hi,

I'm a new owner of a XPS 13 9365 + TB16 dock. 

My issues are:

1) The TB16 fan whines at a shrieking high frequency.  The tone is identical to this pitch: http://www.szynalski.com/tone-generator/#1593

2) The T16 fan does not shut off when I put the XPS to sleep, but it does when I choose to shut down instead of sleep. 

I should mention that the vents of the TB16 are not blocked and my environment temperature is not warm at all.  I can hear the whine anywhere within 3.5 feet of the dock to the point where it's a major disturbance.  It's not possible for me to place it at that distance away from me due to the short length of the TB3 cable.

I tried changing 'wake on Dell USB-C dock' in BIOS (yes, the latest bios/drivers) but it had no effect on issue #2 above.  I can't think of any sensible reason why the TB16 fan should run endlessly while the XPS is asleep.

Is there anything that can be done about these issues?  My service tag for the TB16 was not recognized by Dell's registration tool.