HVAC display: Easter eggs?

[Anders]

I seem to remember a thread, which of course I can't find again, noting that the HVAC display could be manipulated into displaying e.g. actual roadspeed, temperature in different places in the engine, etc.

Anyone knows?

 

[guydewdney]

press and hold rest for 10 seconds, with temp set at 22 degrees if electronic or in the white zone if manual

see jim's website http://pages.prodigy.net/jforgione/MB_S500.html somewhere in there...