Yes, two annoying problems that have recently surfaced, but at least the bike is still useable !
These two problems cropped up at the same time, having just re-set the Oil Change interval reminder on the dash (iaw the owners handbook). This had to be done as the at the last oil service, the workshop forgot to re-set the interval reminder! Anyway, having successfully re-set the display reminder, and then started the engine, both problems showed up. The engine started and idled just fine (and still does), but no rev counter indication (despite the initial self-test full scale deflection with ignition on being OK) and the immobiliser light now staying permanently on !
So, I went ahead with checking obvious electrical connections in and around the dash instruments, and the immobiliser wiring from the ignition switch, but nothing unusual. A local workshop plugged in the diagnostic PC and found no fault codes stored in the ECU. Great !