i just read this in the manual which is pretty cool...
The system will sound a tone to warn the driver of obstacles near either bumper in the following manner:
- Objects detected by the front sensors will be indicated by a high pitched tone from the front radio speakers.
- Objects detected by the rear sensors will be indicated by a lower pitched tone from the rear radio speakers.
- The sensing system will report the obstacle which is closest to the front or rear of the vehicle. For example, if an obstacle is 24 inches (60 cm) from the front of the vehicle and, at the same time, an obstacle is only 16 inches (40 cm) from the rear of the vehicle, the lower pitched tone will sound.
- You will hear an alternating tone from the front and rear if there are objects both at the front bumper and rear bumper that are closer than 10 inches (25 cm).
'12 Focus Titanium HB, Platinum White, Leather/Moon/Parking named *shimmer*