When starting the vehicle, the cluster needles will ‘sweep’ their entire range.

17 - Instruments 
coding
Byte 1
Bit 0 Activate

Before:

After:

Interestingly, it failed the first two times I tried it, like this:

but the third time it worked.  I have no explanation as to why.

(sorry for the crappy pictures)

It's a little disapointing that the fuel and temperature gauges don't also sweep.  But it's a cosmetic mod, not functional, so I'm not going to whine about it.

reference:
https://www.autoinstruct.com.au/manufacturer/volkswagen/mk7-golf/mk7-golf-obdeleven-vcds-tweaks/