Owners/service Manual problems of the 2013 Infiniti JX35

About 11/05/2014, I began getting a flashing light, red alternating with white - with a triangle in the middle which has an icon of a vehicle in the center - in my driver information screen. It is approx 3" long x 1" high. It is accompanied by an insistent audio beep. It is in the place on this screen where I get an small yellow/orange icon of a car when I am approaching a car (stationary or moving slower,) quicker than my vehicle thinks I should. This light does not appear in my manual. This signal appears randomly and with no vehicle in front and often on a straight section of road with no traffic. It happens day/night, any weather, any speed and on highway and residential roads. I believe it is trying to warn me of an impending collision and I fear it will either slow or stop my vehicle when completely inappropriate. My vehicle has collision avoidance and all sorts of other technology. I have been working with my dealer (autoplace Infiniti and then Infiniti of williamsville when westherr took over the dealership) since 12/09/14. It has been in for service many times trying to get to the root of the issue. At first I was told the problem doesn't exist and the light doesn't exist. I have also worked with Infinitiusa customer care (case # 17650302) and was told the engineers say the light doesn't exist. A recent drive with an Infiniti east special tech (pete) verified the light and audio signal. His conclusion was that it was operating normally even though I told him, the regular serve tech and general manager about two recent incidents where the car tried to rapidly slow me down on the highway with no vehicle in front or other dangerous situation. Luckily, there was no traffic at the time and I was able to "floor it" to get back up to highway speed before an accident occurred. What are my options?.