[doxuni]

Hi,

I noticed that the driver side blind spot indicator (orange triangle led in the mirror) is always lighting up when a car is passing by (normal behavior). Now what I noticed that this behavior on the passenger side is not the same. When I cross a car it sometimes light up and sometime it doesn't. I have the impression that it is speed dependent. I have the feeling that when I cross with e.g. 20km/h or less then the indicator is lighting up; when faster it doesn't. It is the for all types of cars/trucks.

Do all of you experience the same behavior?

[paulockenden]

It’s the relative speed, I think. So it doesn’t flash if you are overtaking, but it does if there’s a car going roughly the same speed as you, in your blind spot. I’m not sure whether indicating also affects it.

[Graemeb2812]

My understanding is the system uses radars inside the bumpers to detect traffic approaching at around 50 - 100 metres behind. As such, they may become unreliable if the vehicle is dirty (where the sensor is located) or if you are towing; where it will switch off.

With BMW, I've found that If you indicate whilst it is detecting something in the blindspot, the orange triangle will flash, and there is a vibration through the steering, presumably to deter you from moving position.