Strut INFINITI Q50 2014 Owner's Manual

5-104Starting and driving
HYDRAULIC POWER STEERING TYPE
WARNING
If the engine is not running or is turned off
while driving, the power assist for the
steering will not work. Steering will be
harder to operate.
The power assisted steering uses a hy-
draulic pump, driven by the engine, to
assist steering.
If the engine stops or the drive belt breaks,
you will still have control of the vehicle.
However, much greater steering effort is
needed, especially in sharp turns and at
low speeds.
DIRECT ADAPTIVE STEERING TYPE
WARNING
When the power steering warning light
illuminates with the engine running, the
power assist for the steering will cease
operation. You will still have control of the
vehicle, but the steering will be harder to
operate.
CAUTION
.If wheels or tires other than the INFINITI
recommended ones are used, Direct
Adaptive Steering may not operate
properly and the power steering warning
light may illuminate.
. Do not modify the vehicle’s suspension.
If suspension parts such as shock
absorbers, struts, springs, stabilizer
bars, bushings and wheels are not
INFINITI recommended for your vehicle
or are extremely deteriorated, Direct
Adaptive Steering may not operate
properly and the power steering warning
light may illuminate.
. Do not modify the vehicle’s steering. If
steering parts are not INFINITI recom-
mended for your vehicle or are extremely
deteriorated, Direct Adaptive Steering
may not operate properly and the power
steering warning light may illuminate.
. If the VDC warning light illuminates, the
power steering warning light may also
illuminate at the same time. Stop the
vehicle in a safe location, turn the
engine off and restart the engine. If the
power steering warning light continues to illuminate, have the system checked
by an INFNITI retailer. For VDC system,
see
“Vehicle Dynamic Control (VDC)
system” (P.5-108).
. Do not place the ignition switch is in the
ON position while the steering wheel or
a tire is removed.
. Do not turn the steering wheel as much
as possible while the ignition switch is
in any position other than the ON
position.
. Installing an accessory on the steering
wheel, or changing the steering wheel,
may reduce the steering performance.
Direct Adaptive Steering is designed to
control the steering force and steering
angle according to the vehicle speed and
amount of turning of the steering wheel.
The steering characteristic can be selected
with the INFINITI Drive Mode Selector. See
“INFINITI Drive Mode Selector” (P.5-21).
When the steering wheel is operated
repeatedly or continuously while parking
or driving at a very low speed, the power
assist for the steering wheel will be
reduced and the steering wheel may be
slightly turned even when driving on a
POWER STEERING

VDC system is automatically reset to on
when the ignition switch is placed in the off
position then back to the on position.
See“Vehicle Dynamic Control (VDC) warn-
ing light” (P.2-17) and “Vehicle Dynamic
Control (VDC) off indicator light” (P.2-19).
The computer has a built-in diagnostic
feature that tests the system each time you
start the engine and move the vehicle
forward or in reverse at a slow speed.
When the self-test occurs, you may hear a
“clunk” noise and/or feel a pulsation in the
brake pedal. This is normal and is not an
indication of a malfunction.
BRAKE FORCE DISTRIBUTION
During braking while driving through turns,
the system optimizes the distribution of
force to each of the four wheels depending
on the radius of the turn.
WARNING
. The VDC system is designed to help the
driver maintain stability but does not
prevent accidents due to abrupt steering
operation at high speeds or by careless
or dangerous driving techniques. Reduce
vehicle speed and be especially careful when driving and cornering on slippery
surfaces and always drive carefully.
. The brake force distribution system may
not be effective depending on the driv-
ing condition. Always drive carefully and
attentively.
. Do not modify the vehicle’s suspension.
If suspension parts such as shock
absorbers, struts, springs, stabilizer
bars, bushings and wheels are not
INFINITI recommended for your vehicle
or are extremely deteriorated, the VDC
system may not operate properly. This
could adversely affect vehicle handling
performance, and the VDC warning light
may illuminate.
. If brake related parts such as brake
pads, rotors and calipers are not INFINITI
recommended or are extremely deterio-
rated, the VDC system may not operate
properly and the VDC warning light
may illuminate.
. If engine control related parts are not
INFINITI recommended or are extremely
deteriorated, the VDC warning light
may illuminate.
. When driving on extremely inclined
surfaces such as higher banked corners, the VDC system may not operate prop-
erly and the VDC warning light
may
illuminate. Do not drive on these types
of roads.
. When driving on an unstable surface
such as a turntable, ferry, elevator or
ramp, the VDC warning light
may
illuminate. This is not a malfunction.
Restart the engine after driving onto a
stable surface.
. If wheels or tires other than the INFINITI
recommended ones are used, the VDC
system may not operate properly and
the VDC warning light
may illumi-
nate.
. The VDC system is not a substitute for
winter tires or tire chains on a snow
covered road.
Starting and driving5-109