Cadillac XT4 Owner Manual (GMNA-Localizing-Europe-16412942) - 2023 -
CRC - 5/25/22
Driving and Operating
209
Approaching and Following a Vehicle
The vehicle ahead indicator is in the
instrument cluster and HUD display,
if equipped.
The vehicle ahead indicator only displays
when a vehicle is detected in your vehicle's
path moving in the same direction.
If this symbol is not displaying, ACC will not
respond to or brake for vehicles ahead.
ACC automatically slows the vehicle down
and adjusts vehicle speed to follow the
vehicle in front at the selected follow gap.
The vehicle speed increases or decreases to
follow the vehicle in front of you, but will
not exceed the set speed. It may apply
limited braking, if necessary. When braking
is active, the brake lamps will come on. The
automatic braking may feel or sound
different than if the brakes were applied
manually. This is normal.
Overtaking a Vehicle While Using ACC
If the set speed is high enough, and the left
indicator is used to overtake a vehicle ahead
within the selected interval, ACC may assist
by gradually accelerating the following
vehicle prior to the lane change.
{
Warning
When using ACC to overtake a vehicle or
change lane, the distance to the vehicle
ahead being overtaken may be reduced.
ACC may not apply sufficient acceleration
or braking when overtaking a vehicle or
changing lane. Always be ready to
accelerate or brake manually to finish
overtaking or changing lane.
Stationary or Very Slow-Moving Objects
{
Warning
ACC may not detect and react to stopped
or slow-moving vehicles ahead of you. For
example, the system may not brake for a
vehicle it has never detected moving. This
can occur in stop-and-go traffic or when a
vehicle suddenly appears due to a vehicle
ahead changing lanes. Your vehicle may
(Continued)
Warning (Continued)
not stop and could cause a crash. Use
caution when using ACC. Your complete
attention is always required while driving
and you should be ready to take action
and apply the brakes.
Irregular Objects Affecting ACC
ACC may have difficulty detecting the
following objects:
.
Vehicles with cargo extending from
the rear.
.
Non-standard shaped vehicles, such as
vehicle transport, vehicles with a side car
fitted, or horse-drawn carriages.
.
Objects that are close to the front of your
vehicle.
ACC Automatically Disengages
ACC may automatically disengage and the
driver will need to manually apply the
brakes to slow the vehicle when:
.
The sensors are blocked.
.
The Traction Control System (TCS) or
StabiliTrak/ESC system has activated or
been disabled.
.
There is a fault in the system.