You can turn off the Sonar system by pressing the button located on the lower left hand side of the steering wheel. You can find a graphic of it on page 0-6, item #6 in the manual, and a full description of the system starting on page 5-47.

I just turn mine off when I'm not going in reverse.

I also have been told by the Dealer that you can only change the Sonar sensitivity if you have the Technology package.

As you get closer to an object, the "beeping" gets faster until it is one long continuous "beep". At that point I think you are within 3 inches of making contact with the object.

The sensors are designed to also detect objects protruding up from ground level ... so if a curb or median is high enough, and you are facing or adjacent to it, the sonar will detect that and start "beeping". This happens to me at some left hand turn lanes where there is a large island and I'm stopped along side.

But as another poster said, if you find the alerts annoying, you can turn off the senor by depressing the sonor button on the lower left-hand side of the dash.

Cheers ......

Welcome to the group! (It's nice to have more Canadians on-board! )

today, I was waiting at a traffic light, and there is a sports car (don't remember which kind) in front of me. As the light turns green, he takes off and left some exhausts. As soon as that happen, the beep starts, and goes away. The reason i think it was the exhaust is below:
1. The light already changed, and my car did not move after i stop at the light.
2. Since exhaust are consists of Carbon Monoxide and Carbon dioxide, there would be possible carbon particles big enough to fool the radar.

Just some guess though.

The sonar sensors send a small ultrasonic signal out, something is contacting the sound waves and the signal is reverberated to the senor and based on the amount of time it takes for the sensor to receive the signal the SONAR unit makes the judgment of distance.

What I am wondering is I do not think the system is active above ~5MPH (although I am not positive) so that would explain why they would activate at a stop.

Maybe the sensors do in fact have bugs or something on them, and the thought of the CO being detected maybe true as well as the moisture content of the exhaust plume will also reflect sonar signals. That is the basic operation of DOPLAR on a different frequency scale but same concept.

I wonder if the sensors are receiving signal interference from some type of frequency generator at or near the stop light. Next time you are at the light take a second to look around and see if maybe there is a red light camera, or something electronic there. I am just curious.