Jeep Wrangler: Blind Spot Monitoring (BSM) — If Equipped / Entering From The Side
Vehicles that move into your adjacent lanes
from either side of the vehicle.

Side Monitoring
The BSM system uses two radar sensors,
located inside the taillights, to detect highway
licensable vehicles (automobiles, trucks,
motorcycles, etc.) that enter the blind spot
zones from the rear/front/side of the vehicle...
Vehicles that come up from behind your vehicle
on either side and enter the rear detection zone
with a relative speed of less than 30 mph
(48 km/h)...
Other information:
..
The rearview mirror can be adjusted up, down,
left, and right. The mirror should be adjusted to
center on the view through the rear window.
The mirror automatically adjusts to headlight
glare from vehicles behind you.
NOTE:
The Automatic Dimming feature is disabled
when the vehicle is in REVERSE to improve the
driver’s view...