Vehicle dynamic control INFINITI QX30 2018 User Guide

Self-test feature
The ABS includes electronic sensors, electric
pumps, hydraulic solenoids and a computer.
The computer has a built-in diagnostic fea-
ture that tests the system each time you start
the engine and move the vehicle at a low
speed in forward or reverse. When the self-
test occurs, you may hear a “clunk” noise
and/or feel a pulsation in the brake pedal.
This is normal and does not indicate a mal-
function. If the computer senses a malfunc-
tion, it switches the ABS off and illuminates
the ABS warning light on the instrument
panel. The brake system then operates nor-
mally, but without anti-lock assistance. If the
ABS warning light illuminates during the
self-test or while driving, have the vehicle
checked. It is recommended you visit an
INFINITI retailer for this service.
Normal operation
The ABS operates at speeds above 3 to 6
MPH (5 to 10 km/h). The speed varies ac-
cording to road conditions.
When the ABS senses that one or more
wheels are close to locking up, the actuator
rapidly applies and releases hydraulic pres-
sure. 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 prop-
erly. However, the pulsation 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
conditions, 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 main-
tain control of the vehicle, but it cannot pre-
vent loss of vehicle control in all driving situ-
ations.
VEHICLE DYNAMIC CONTROL (VDC)
SYSTEM
5-92Starting and driving

When the VDC system operates, the VDC
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".
If a malfunction occurs in the system, the
VDC warning light
illuminates in the
instrument panel. The VDC system automati-
cally turns off.
WARNING
•The VDC system is designed to help the
driver maintain stability but does not
prevent accidents due to abrupt steer-
ing operation at high speeds or by care-
less or dangerous driving techniques.Reduce vehicle speed and be especially
careful when driving and cornering on
slippery surfaces and always drive care-
fully.
•Do not modify the vehicle’s suspension.
If suspension parts such as shock ab-
sorbers, struts, springs, stabilizer bars,
bushings and wheels are not INFINITI
recommended for your vehicle or are ex-
tremely deteriorated, the VDC system
may not operate properly. This could
adversely affect vehicle handling per-
formance, 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
deteriorated, 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 sur-
faces such as higher banked corners, the
VDC system may not operate properly 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 illuminate.
•The VDC system is not a substitute for
winter tires or tire chains on a snow cov-
ered road.
•If VDC is malfunctioning, VDC is unable
to stabilize the vehicle. In addition,
other driving safety systems are
switched off. This increases the risk of
skidding and an accident. Drive on care-
fully. Have VDC checked. It is recom-
mended you visit an INFINITI retailer for
this service.
Starting and driving5-93

•On vehicles with a push button ignition
switch: you must remove the start/stop
button and use the key (see " Push-
button ignition switch (if equipped)").
Otherwise the automatic transmission
may shift to position P (Park) when the
driver's or front passenger door are
opened, which could lead to damage to
the transmission.
If your vehicle is stuck in sand, snow, mud,
etc., use a tow strap or other device designed
specifically for vehicle recovery. Always fol-
low the manufacturer’s instructions for the
recovery device.
Rocking a stuck vehicle
WARNING
•To avoid potential injury, stand clear of
a stuck vehicle.
•Do not spin your tires at high speed. This
could cause them to explode and result
in serious injury. Parts of your vehicle
could also overheat and be damaged.If your vehicle is stuck in sand, snow, mud,
etc., use the following procedure:
1. Turn off the Vehicle Dynamic Control
(VDC) system.
2. Make sure the area in front and behind the
vehicle is clear of obstructions.
3. Turn the steering wheel right and left to
clear an area around the front tires.
4. Slowly rock the vehicle forward and back-
ward.
•Shift back and forth between R (Reverse)
and D (Drive).
•Apply the accelerator as little as possible
to maintain the rocking motion.
•Release the accelerator pedal before shift-
ing between R (Reverse) and D (Drive).
•Do not spin the tires above 35 MPH
(55 km/h).
5. If the vehicle cannot be freed after a few
tries, contact a professional towing ser-
vice to remove the vehicle.
6-16In case of emergency

name molding that is higher or deeper than
the same molding on the other sidewall of the
tire, or (2) the outward facing sidewall of an
asymmetrical tire that has a particular side
that must always face outward when
mounted on a vehicle.
TYPES OF TIRES
WARNING
•When changing or replacing tires, be
sure all four tires are of the same type
(i.e, summer, all season or snow) and
construction. An INFINITI retailer may
be able to help you with information
about tire type, size, speed rating and
availability.
•Replacement tires may have a lower
speed rating than the factory equipped
tires, and they may not match the po-
tential maximum vehicle speed. Never
exceed the maximum speed rating of the
tire.
•Always use tires of the same type, size,
brand, construction and tread pattern
on all four wheels. Failure to do so may
result in a circumference difference be-
tween tires on the front and rear axles
which can cause the Vehicle Dynamic
Control (VDC) system to malfunctionresulting in personal injury or death, ex-
cessive tire wear and may damage the
transmission, transfer case and differ-
ential gears.
•For additional information regarding
tires, refer to “Important Tire Safety In-
formation” (US) or “Tire Safety Infor-
mation“ (Canada) in the Warranty In-
formation Booklet.
CAUTION
ONLY use spare tires specified for the
model.
If excessive tire wear is found, it is recom-
mended that all four tires be replaced with
tires of the same size, brand, construction
and tread pattern. The tire pressure and
wheel alignment should also be checked and
corrected as necessary. It is recommended
that you visit an INFINITI retailer for this
service.
All season tires
INFINITI specifies all season tires on some
models to provide good performance all year,
including snowy and icy road conditions. All
season tires are identified by ALL SEASON
and/or M&S on the tire sidewall. Snow tires
have better snow traction than all seasontires and may be more appropriate in some
areas.
Summer tires
INFINITI specifies summer tires on some
models to provide superior performance on
dry roads. Summer tire performance is sub-
stantially reduced in snow and ice. Summer
tires do not have the tire traction rating M&S
on the tire sidewall.
If you plan to operate your vehicle in snowy or
icy conditions, INFINITI recommends the use
of snow or all season tires on all four wheels.
Snow tires
If snow tires are needed, it is necessary to
select tires equivalent in size and load rating
to the original equipment tires. If you do not,
it can adversely affect the safety and han-
dling of your vehicle.
Generally, snow tires have lower speed rat-
ings than factory equipped tires and may not
match the potential maximum vehicle speed.
Never exceed the maximum speed rating of
the tire. If you install snow tires, they must be
the same size, brand, construction and tread
pattern on all four wheels.
For additional traction on icy roads, studded
tires may be used. However, some U.S. states
and Canadian provinces prohibit their use.
Check local, state and provincial laws before
8-32Do-it-yourself

Sizes.....................10-8
tire chains..................8-33
Wear and damage.............8-33
Wheel balance...............8-36
Wheels and tires..........8-27, 10-8
Towing.....................6-14
Recommendations.............6-14
Your vehicle.................6-14
Trailer.....................10-15
Towing...................10-15
Transferring registration to another
country.....................10-9
Transmission..................5-18
Automatic Transmission (AT)
operation..................5-18
Automatic transmission fluid (ATF). . . .8-7
Traveling....................10-9
Turn signal...................8-23
Bulb information..............8-23
Operation..................8-23
V
Vanity mirror..................3-18
Lights....................2-89
Vehicle Dynamic Control (VDC).......5-92
Vehicle identification.............10-9
Air conditioner label...........10-11
Engine serial number...........10-10
Number (VIN) (chassis number). . . .10-10Number (VIN) plate............10-9
Tire and loading information label . . .10-11
Vehicle Immobilizer system..........5-13
Vehicle information display..........2-15
Warnings and indicators.........2-29
Vehicle loading information........10-13
Ventilators...................4-28
W
Warning lights..............0-10, 2-8
Airbag....................1-53
Warnings....................2-29
Vehicle information display........2-29
Warranty...................10-17
Emission control system.........10-17
Washing.....................7-2
Waxing......................7-2
Wheel lock bolts.................6-9
Wheels.....................8-36
Balancing..................8-36
Blocking....................6-5
Care ......................7-3
Changing tires and wheels........8-34
Installation..................6-8
Removal....................6-6
Sizes.....................10-8
Wheel lock bolts...............6-9
Wheels and tires..........8-27, 10-8
Windows....................2-74Window washer.................8-8
Fluid......................8-8
Windshield...................2-64
Defroster..................2-64
De-icer switch...............2-64
Wiper and washer switch.........2-62
Winter......................5-96
Battery....................5-96
Driving on snow or ice...........5-97
Engine coolant...............5-96
Precautions.................5-96
Special equipment.............5-97
Tire equipment...............5-96
Wipers......................8-13
Blade replacement
.............8-13
Rear - Operation..............2-63
Washer nozzle...............8-14
Wiper and washer switch.....2-61, 2-62
Index11-7