High Beam Control System (Hbc) - Mazda 3 2019 Owner's Manual

When Driving
i-ACTIVSENSE
High Beam Control
System (HBC)

▼ High Beam Control System (HBC)

The HBC determines the conditions in
front of the vehicle using the Forward
Sensing Camera (FSC) while driving in
darkness to automatically switch the
headlights between high and low beams.
Refer to Forward Sensing Camera (FSC)
on page 4-198.
While driving the vehicle at a speed of
about 30 km/h (19 mph) or more, the
headlights are switched to high beams
when there are no vehicles ahead or
approaching in the opposite direction.
The system switches the headlights to low
beams when one of the following occurs:
The system detects a vehicle or the

headlights/lights of a vehicle
approaching in the opposite direction.
The vehicle is driven on roads lined with

streetlamps or on roads in well-lit cities
and towns.
The vehicle is driven at less than about

20 km/h (12 mph).
The headlight high-beam indicator light

turns on while the high beams are on.
1. Forward Sensing Camera (FSC)
4-88
*Some models.
*
1
*
The warning light turns on when the
system has a malfunction.
Refer to High Beam Control System
(HBC) Warning Indication/Warning Light
(Amber) on page 7-33.
Do not adjust the vehicle height, modify
Do not rely excessively on the HBC and
NOTE
The timing in which the system switches
the headlights changes under the
following conditions. If the system does
not switch the headlights appropriately,
manually switch between high and low
beams according to the visibility as well as
road and traffic conditions.




*1
The recognition distance of the Forward Sensing
Camera (FSC) varies according to the
surrounding conditions.
CAUTION
the headlight units, or remove the
camera, otherwise the system will not
operate normally.
drive the vehicle while paying sufficient
attention to safety. Switch the headlights
between the high beams and low beams
manually if necessary.
When there are sources of light in the
area such as street lamps, illuminated
signboards, and traffic signals.
When there are reflective objects in the
surrounding area such as reflective
plates and signs.
When visibility is reduced under rain,
snow and foggy conditions.
When driving on roads with sharp turn
or hilly terrain.