Well I just put the 850 on the road after 13 months (i drove other cars, and was doing 850 maintenance repairs). So I can't say for sure WHEN this started. Then it took me a month to drive it at night for the first time. The dash lights went off after ONE second after startup and turn-on. I played with the switch and the dimmer. It seems that if I play with the rotary light switch, maybe shut the car off the dash light give some momentary light upon restart - but just once. They're not coming back on after more playing with the controls. Some web searches point to the light switch or dimmer - but I don't think this momentary working points to that direction. Maybe one of those mysterious electrical components like a 'capacitor' is kaputt. This is something I'll have to fix over the next 5 years, no rush. Any ideas?