Think it has to do with the setup of this screen.
This behavior is called "demo mode"
This has to be turned off before activating hour count..
Check the service manual !!!!!!

The symbol you refer to is an option for the water level, this can be turned off. Also the handbrake alarm can be turned off..
through the mask option i think..
(Long time ago for me ;););))

If i think of it, i will check the manual