I just purchased a 2018 Nissan Murano SL w/ 15k miles. It was fine in the test drive, but now I'm having the same issue as
@The_Penguin. When it is on, the radar sensor works for both ICC (cruise control) and FCW (braking). But every trip for the past two days, the system shuts down 5 - 10 minutes into the trip. When it shuts down I hear the warning chime and the FCW malfunction indicator comes on, but I don't see any message on the instrument display. I'm pretty sure I look quick enough to catch it.
For anyone new to the issue, below is the malfunction icon.
Once the system shuts down, it stays down until I turn the Murano off and back on. Once I restart the car, it always works, but only stays working for another 5-10 minutes before the malfunction indicator comes back on. I repeated this cycle four or five times on my last trip. Each time the system only stayed on for 5 minutes or so, and each time it came back on again after restarting the car. I'm nearly positive that there is no obstruction or dirt on the sensor.
I'm taking it into a Nissan dealership later this week, but I'm pretty sure they will give me the line about a damaged bumper or something since I didn't purchase the car from a Nissan dealership.
Could someone look at the image below and let me know if the marked area is the radar sensor? The Murano's manual seems to indicate that the sensor is behind and/or underneath the grille, but the picture isn't very specific. Is there supposed to be a grill covering the marked area?