Dodge Challenger SRT Includes 392/Hellcat 2016 Owner's Manual page 118

116 UNDERSTANDING THE FEATURES OF YOUR VEHICLE
Rear Detection Zones
When the vehicle is started, the BSM warning light will
momentarily illuminate in both outside rear view mirrors
to let the driver know that the system is operational.
Automatic Transmission Vehicles
The BSM system sensors operate when the vehicle is in
any forward gear or REVERSE and enters stand-by mode
when the vehicle is in PARK.
Manual Transmission Vehicles
The BSM system sensors operate when the vehicle is in
any gear and enters stand-by mode when the Park Brake
is engaged, the vehicle is not in REVERSE, and the
vehicle is stationary.