Cadillac 2011 STS - Manual (Page 211)

Black plate (25,1) Cadillac STS Owner Manual - 2011
When following a vehicle and entering a curve,
Adaptive Cruise Control could lose track of the vehicle
in your lane and your vehicle could accelerate. When
this happens, the vehicle ahead symbol will not appear
on the HUD. Adaptive Cruise Control might detect a vehicle that is
not in your lane and apply the brakes.
Adaptive Cruise Control might occasionally
provide a driver alert and/or braking that you consider
unnecessary. It could respond to signs, guardrails, and
other stationary objects when entering or exiting a
curve. This is normal operation. Your vehicle does not
need service.
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