Read the owners manual. Yea, I'm that will be a help...
This is the first I've heard about this.
I would just hit ok and not worry about it. The NAV system is junk anyway's in IMO.
I use my Tom Tom, much better system and it's portable.
I think the next service is at 60,000 miles.
193k, 5/20/12 new ej257 short block, 8/20/11 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
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