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Cadillac STS Owner Manual - 2011
Limited-Slip Rear Axle
Vehicles with a limited-slip rear axle can give more
traction on snow, mud, ice, sand or gravel. It works like
a standard axle most of the time, but when traction is
low, this feature allows the drive wheel with the most
traction to move the vehicle.
All-Wheel Drive (AWD) System
With this feature, engine power is sent to all four wheels
at all times. It is fully automatic, and adjusts itself as
needed for road conditions.
Steering
Power Steering
If power steering assist is lost because the engine stops
or the system is not functioning, the vehicle can be
steered but it will take more effort.
Speed Variable Assist Steering
The vehicle has a steering system that continuously
adjusts the effort felt when steering at all vehicle
speeds. It provides ease when parking, yet a firm,
solid feel at highway speeds.
Active Steering
All‐wheel‐drive vehicles with the Active Steering with
Enhanced StabiliTrak
®
option have an electronically
controlled active steering system. The active steering
system uses the steering actuator to automatically
adjust the front road wheel turning angle based on
vehicle speed and how much the steering wheel is
turned. This system reduces steering effort at low
speeds, improves steering feel at moderate speeds,
and reduces steering sensitivity at higher speeds.
During some operating conditions, the active steering
might deactivate to protect the system from damage.
You might notice that the center position of the steering
wheel is changed. Unless there is a SERVICE
STEERING SYS message, the system will return to
normal operation as soon as the condition ceases,
usually within a very short period of time.
At low speeds, the active steering system requires
less movement of the steering wheel to change vehicle
direction than the normal power steering system. Adjust
your driving accordingly.
When certain steering faults are present, the active
steering deactivates and vehicle speed might be
limited. The SERVICE STEERING SYS and SPEED
LIMITED TO XXX messages will be displayed.
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