RAM 1500 2020 Owner's Manual page 157

NOTE:
Fifth wheel or gooseneck trailers are not
supported by Trailer Merge Assist.
Trailer Length Detection
1 — Trailer Length
2 — Trailer Width
3 — Trailer Hitch
Trailer length will be identified and placed into
one of the following categories:
Trailer length up to 10 ft (3 m) — Blind spot

zone will be adjusted to 10 ft (3 m)
Trailer length between 10 ft to 20 ft (3 m to

6 m) — Blind spot zone will be adjusted to
20 ft (6 m) .
Trailer length between 20 ft to 30 ft (6 m to

9 m) — Blind spot zone will be adjusted to
30 ft (9 m) .
Trailer length between 30 ft and 39.5 ft (9 m

to 12 m) — Blind spot zone will be adjusted to
MAX distance .
NOTE:
Trailer length is determined within +/- 3 ft (1 m)
of actual length. Trailers that are the same size
as the category limit, 10/20/30 ft (3/6/9 m),
could be subject to being placed in the category
above or below the correct one.
Trailer Merge Warning
Trailer Merge Warning is the extension of the
blind spot function to cover the length of the
trailer, plus a safety margin, to warn the driver
when there is a vehicle in the adjacent lane. The
driver is alerted by the illumination of the BSM
warning light located in the outside mirror on
the side the other vehicle is detected. In
addition, an audible (chime) alert will be heard
.
and radio volume reduced. Refer to "Modes Of
Operation" in this section for further
information.
NOTE:
The Trailer Merge Alert system DOES NOT

alert the driver about rapidly approaching
vehicles that are outside the detection zones.
The Blind Spot Monitoring (BSM) system may

experience drop outs (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).
Crowded areas such as parking lots, neigh-

borhoods, etc. May lead to an increased
amount of false alerts. This is normal opera-
tion.
WARNING!
The Blind Spot Monitoring system is only an
aid to help detect objects in the blind spot
zones. The BSM system is not designed to
detect pedestrians, bicyclists, or animals.
Even if your vehicle is equipped with the BSM
system, always check your vehicle's mirrors,
glance over your shoulder, and use your turn
signal before changing lanes. Failure to do so
can result in serious injury or death.
SAFETY 155
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