Traffic Sign Assistant - Cadillac XT4 Owner's Manual

258 DRIVING AND OPERATING
detected vehicle, this display will flash
as an extra warning not to change
lanes.
LCA can be disabled through vehicle
personalisation. When you disable
LCA, SBZA is also disabled. See Vehicle
Personalisation 0 121. If LCA is
disabled by the driver, the LCA mirror
displays will not light up.
When the System Does Not
Seem to Work Properly
The LCA system requires some driving
for the system to calibrate to
maximum performance. This
calibration may occur more quickly if
the vehicle is driving on a straight
motorway with traffic and roadside
objects (e.g., guardrails, barriers).
LCA displays may not come on when
passing a vehicle quickly, for a
stopped vehicle, or when towing a
trailer. The LCA detection zones that
extend back from the side of the
vehicle do not move further back
when a trailer is towed. Use caution
while changing lanes when towing a
trailer. LCA may alert to objects
attached to the vehicle, such as a
trailer, bicycle, or object extending out
to either side of the vehicle. Attached
objects may also interfere with the
detection of vehicles. This is normal
system operation; the vehicle does not
need service.
LCA may not always alert the driver to
vehicles in the next lane over,
especially in wet conditions or when
driving on sharp curves. The system
does not need to be serviced. The
system may light up due to guardrails,
signs, trees, shrubs, and other
non-moving objects. This is normal
system operation; the vehicle does not
need service.
LCA may not operate when the LCA
sensors in the left or right corners of
the rear bumper are covered with
mud, dirt, snow, ice, or slush, or in
heavy rainstorms. For cleaning
instructions, see Washing the
Vehicle under Exterior Care 0 351.
If the DIC still displays the system
unavailable message after cleaning
both sides of the vehicle toward the
rear corners of the vehicle, see your
dealer.
If the LCA displays do not illuminate
when moving vehicles are in the side
blind zone or are rapidly approaching
this zone and the system is clean, the
system may need service. Take the
vehicle to your dealer.

Traffic Sign Assistant

Traffic sign assistant recognises
designated traffic signs via the front
camera located behind the windscreen
in front of the interior rear view
mirror, and displays the detected
speed limit in the Driver Information
Centre (DIC). Additionally, speed limit
information from the navigation
system map database may be used.
Caution
The system is intended to assist the
driver within a defined speed range
to discern certain traffic signs.
Always pay attention to posted
speed limit signs.
Do not ignore traffic signs which
are not displayed by the system.