RAM 2500 2021 Owner's Manual page 316

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314
SAFETY
when the vehicle speed reaches 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 Blind Spot Monitoring (BSM) system may
experience dropouts (blinking on and off) of
the side mirror warning indicator lamps when
a motorcycle or any small object remains at
the side of the vehicle for extended periods of
time (more than a couple of seconds).
The vehicle's taillights, 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
taillights with foreign objects (bumper stickers,
bicycle racks, etc.).
The system may also detect blockage if the
vehicle is operated in areas with extremely low
radar returns such as a desert or parallel to a
large elevation drop. If blockage is detected, a
"Blind Spot Temporarily Unavailable, Wipe Rear
Corners" message will display in the cluster, both
mirror lights will illuminate, and BSM and RCP
alerts will not occur. This is normal operation. The
system will automatically recover and resume
function when the condition clears.
Radar Sensor Locations
If the system detects degraded performance
due to contamination or foreign objects, a
message will warn you of a blocked sensor and
the warning indicators in the side view mirrors
will be on. The warning indicators will remain
illuminated until blockage clearing conditions
are met. First clear the taillights around the
sensors of the blockage. After removing the
blockage, cycle the ignition from ON to OFF and
then back ON.
If the blockage message is still present after
cycling the ignition and driving in traffic, check
again for a blockage.
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 Ú page 317.
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
necessary. The BSM system will issue an alert
during these types of zone entries.

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