azieba wrote:Most likely it is to let you know that either a sharp turn is coming up, or the speed limit is dropping in a few hundred yards. It really depends on what you have set. I believe by default, both of those will beep. The other one is you are going over 5+ miles over the speed limit. If you look at the right side of the screen on the Nav you may see an exclamation point near the speed limit to tell you what it is for. It took me months to figure this out.
Took me a while to figure out the one on sharp turns too. Whatever genius designed the radio UI at Nissan didn't bother fixing the cut-off label for the option. It says "Speed Warning for Cur..." on the radio. This specific one doesn't seem too helpful as it never warns me on the sharpest curves and always goes off on curves that don't exist (like when the maps think the road goes a certain way but the road has not done that for 6+ years).
The speed warning one will go off at ~20-22mph over if you set it to 30mph. I had to turn this one off too because there is a big stretch of road where it thinks the speed limit is 40mph, but it has been 55mph there for at least 10 years.