2004 Allegro Bay on W22 Workhorse, 8.1 L gasser.
While idling in traffic waiting for street construction crew to let traffic proceed...I turned "Off" vehicle for a 15 minute period. Had been driving for 5 hours that day; last leg was approx. 1-1/2 hrs.
Upon crank-up display was blank, no idiot lights & no Christmas tree effect. Had to guess at shift position to find "Drive". Drivability was possible, albeit only a paltry 3-5 MPH. Nothing more from the power-plant. Embarrassing; was creeping forward for a pull-off and traffic backing up behind me. Found a spot, stopped, started fine after a wait period. Display back as normal. Check engine symbol lit for 6 miles before disappearing. All's fine now. OBD check revealed no error codes whatsoever. Now I'm stumped.
Had replaced Actia 2 yrs ago with newer, orange display [former had suffered pixel drop-out]. Should not be ready for a re-flash of firmware. Any thoughts on what's going on? Did the CPU have a brain fart? I'd hate to experience that again; but no OBD code revealed.
Any others out there see a similar black-out of their IP (instrument panel)?