WyvernNZ

Hi all, My e46 dashboard has started dimming across the clock, mileage, gear display bar. The clock on the stereo also dims, but the dials stay fully lit. The dimming lasts for a few seconds and then goes back up to full power. This has happened twice in the last 2 weeks. Someone at work mentioned that the lights dim to remind you that your service meter is getting close to zero. Is this true? Anyone know what this all means? Cheers.