Vehicle dynamic control (vdc) system -27 – NISSAN 2012 Murano - Owner's Manual User Manual

Page 371

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Normal operation

The ABS operates at speeds above 3 to 6 MPH
(5 to 10 km/h). The speed varies according to
road conditions.

When the ABS senses that one or more wheels
are close to locking up, the actuator rapidly
applies and releases hydraulic pressure. This
action is similar to pumping the brakes very
quickly. You may feel a pulsation in the brake
pedal and hear a noise from under the hood or
feel a vibration from the actuator when it is
operating. This is normal and indicates that the
ABS is operating properly. However, the pulsa-
tion may indicate that road conditions are
hazardous and extra care is required while
driving.

The Vehicle Dynamic Control (VDC) system
uses various sensors to monitor driver inputs
and vehicle motion. Under certain driving con-
ditions, the VDC system helps to perform the
following functions.
. Controls brake pressure to reduce wheel

slip on one slipping drive wheel so power is
transferred to a non slipping drive wheel on
the same axle.

. Controls brake pressure and engine output

to reduce drive wheel slip based on vehicle
speed (traction control function).

. Controls brake pressure at individual wheels

and engine output to help the driver maintain
control of the vehicle in the following
conditions:
— understeer (vehicle tends to not follow

the steered path despite increased
steering input)

— oversteer (vehicle tends to spin due to

certain road or driving conditions).

The VDC system can help the driver to maintain
control of the vehicle, but it cannot prevent loss
of vehicle control in all driving situations.

When the VDC system operates, the
warning light in the instrument panel flashes so
note the following:
. The road may be slippery or the system may

determine some action is required to help

keep the vehicle on the steered path.

. You may feel a pulsation in the brake pedal

and hear a noise or vibration from under the
hood. This is normal and indicates that the
VDC system is working properly.

. Adjust your speed and driving to the road

conditions.

See “Vehicle dynamic control (VDC) warning
light” in the “2. Instruments and controls”
section and “Vehicle Dynamic Control (VDC)
off indicator light” in the “2. Instruments and
controls” section.

If a malfunction occurs in the system, the
warning light comes on in the instrument panel.
The VDC system automatically turns off when
the warning light is on.

The VDC OFF switch is used to turn off the VDC
system. The VDC off indicator

illuminates to

indicate the VDC system is off. When the VDC
switch is used to turn off the system, the VDC
system still operates to prevent one drive wheel
from slipping by transferring power to a non
slipping drive wheel. The

warning light

flashes if this occurs. All other VDC functions
are off and the

warning light will not flash.

The VDC system is automatically reset to on
when the ignition switch is placed in the OFF
position then back to the ON position.

The computer has a built-in diagnostic feature

Starting and driving

5-27

VEHICLE DYNAMIC CONTROL (VDC)
SYSTEM

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