Chrysler 2014 Grand Cherokee SRT Owner's Manual page 72

The BSM detection zone covers approximately
one lane on both sides of the vehicle (12 ft or
3.8 m). The zone starts at the outside rear view
mirror and extends approximately 23 ft (7 m) to
the rear of the vehicle. The BSM system moni-
tors the detection zones on both sides of the
vehicle when the vehicle speed has reached
approximately 6 mph (10 km/h) or higher and
will alert the driver of vehicles in these areas.
NOTE:
• The BSM system does NOT alert the
driver about rapidly approaching vehicles
that are outside the detection zones.
• The BSM system detection zone DOES
NOT change if your vehicle is towing a
trailer. Therefore, visually verify the adja-
cent lane is clear for both your vehicle
and trailer before making a lane change. If
the trailer or other object (i.e., bicycle,
sports equipment) extends beyond the
side of your vehicle, this may result in the
BSM warning light remaining illuminated
the entire time the vehicle is in a forward
gear.
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The area on the rear fascia where the radar
sensors are located must remain free of snow,
ice, and dirt/road contamination so that the
BSM system can function properly. Do not block
the area of the rear fascia where the radar
sensors are located with foreign objects (bum-
per stickers, bicycle racks, etc.).
Sensor Location (Driver Side Shown)
The BSM system notifies the driver of objects in
the detection zones by illuminating the BSM
warning light located in the outside mirrors in
addition to sounding an audible (chime) alert
and reducing the radio volume. Refer to "Modes
Of Operation" for further information.
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Warning Light Location
The BSM system monitors the detection zone
from three different entry points (side, rear,
front) while driving to see if an alert is neces-
sary. The BSM system will issue an alert during
these types of zone entries.