Briitini

Anyone notice it not detecting a car next to you? Thank god I don't rely on them 100%, but I have noticed twice that they haven't detected a car.

sandy14

It happens occasionally on my GX. Usually the other car is a smaller car so we just figured the sensors weren't seeing it. Also, it's mostly the right side.
You have a sedan though so that blows that theory.

unowned

yes i've had to turn off and turn it on once so far since getting my 3is 30 minutes into my drive on the hwy

toyotatom

Haven't had it not detect a car yet but at best it only gives you about a 1 car length warning that a car is there which is not much. I find the BSM much more useful in parking lots backing up out of a tight space or being parked between two SUV's with no visibility to look around.

WiLz

Are you talking about a car next to you, or a car in your blind spot? Because the system isn't designed to detect cars right next to you. It only lights up when there is a car in your blind spot, which is the area from around the rear door to about 1/2 car length behind you. It doesn't light up if a car is side-by-side with your car, or if a car 2 lanes over is trying to merge into the same lane. But as you have mentioned, it's not a system to be relied on anyway; drivers should still always check for themselves before changing lanes. The BSM warning should just be treated as an extra layer of safety.