Just noticed yesterday that I have a ‘spinning propeller’ symbol displayed on the tacho display at various points in the day.
Truck is a 15 plate DAF XF fitted with the Siemens tacho.
Question is, what’s it doing and are they watching me or is it just going through some sort of self check!!!
(Looked in FAQ’s and can’t seem to find anything about it?)
Remote download.
Feel watched 
The spinning propellor is a reminder to lift up your landing gear… 
Someone will tootle along with a sensible suggestion real soon…
You’re going too fast and about to get done for low flying.
It’s still downloading, remotely.
Some good info here if you’re on a 15
It means your buffering.
Try frantically hitting the play button to get the money shot.
It knows you are high.
Honked:
Remote download.Feel watched
Just as I thought and I do!
Honked:
It’s still downloading, remotely.Some good info here if you’re on a 15
I’ll have a read - thanks!
Ours does that but only when in the yard.
Relax its just the latest gizmo to show your life as a driver ebbing away. Once it stops it automatically destroys your digi card & ends your career behind the steering wheel. 