Hi, I own a 2017 QX50 Deluxe Touring - does not have Tech package, no lane departure assist, etc. Has 45k miles. Today I started getting a mystery noise. Every 2 minutes whether driving or sitting at a light there are three soft beeps. No warning lights, no apparant mechanical issues. This was occurring every 2 minutes continuously whether sitting, at highways speeds or neighborhood speeds. I drove 90 miles today and the beeping continued the entire friggin time. I checked everything I could think of on the head unit to no avail. Any ideas??? Thanks.