brakes INFINITI QX30 2018 User Guide

Autonomous braking function
If the driver does not react to the distance
warning signal in a critical situation, the FEB
system can assist with the autonomous brak-
ing function
The autonomous braking function can help
the driver to avoid an accident or reduces the
effects of an accident.
The autonomous braking function is available
in the following speed ranges:
•4–125 MPH (7-200 km/h) for moving ve-
hicles
•4–30 MPH (7 -50 km/h) for stationary
vehicles
Adaptive brake assist function
Adaptive brake assist function provides brak-
ing assistance in hazardous situations at
speeds above 4 MPH (7 km/h). It uses radar
sensor technology to assess the traffic situa-
tion.
If the system detects a risk of collision with
the vehicle in front, it calculates the braking
force necessary to avoid a collision. If you
apply the brakes forcefully, the adaptive
brake assist function will automatically in-
crease the braking force to a level suitable for
the traffic conditions.If the adaptive brake assist function acti-
vates, keep the brake pedal depressed until
the emergency braking situation is over. ABS
prevents the wheels from locking.
The brakes will work normally again if:
•You release the brake pedal.
•There is no longer any danger of a collision.
•No obstacle is detected in front of your
vehicle.
The brake assist function is then deactivated.
At high speeds, the adaptive brake assist
function is capable of reacting to moving ob-
jects that have already been detected as such
at least once over the period of observation.
Up to a speed of approximately 45 MPH
(70 km/h), the adaptive brake assist function
reacts to stationary vehicles.
Starting and driving5-65

ASettings key
B

•Do not place the ignition switch 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.
NOTE
When the steering wheel is operated repeat-
edly or continuously while parking or driving
at a very low speed, the power assistance for
the steering wheel will be reduced. This is to
prevent overheating of the electric power
steering system and protect it from becom-
ing damaged. While the power assistance is
reduced, steering wheel operation will be-
come heavy. When the temperature of the
electric power steering system decreases,
the power assistance level will return to nor-
mal. Avoid repeating such steering wheel
operations that could cause the electric
power steering system to overheat.The brake system has two separate hydraulic
circuits. If one circuit malfunctions, you will
still have braking ability at two wheels.
BRAKE PRECAUTIONS
WARNING
While driving on a slippery surface, be
careful when braking, accelerating or
downshifting. Abrupt braking or acceler-
ating could cause the wheels to skid and
result in an accident.
Vacuum assisted brakes
The brake booster aids braking by using en-
gine vacuum. If the engine stops, you can
stop the vehicle by depressing the brake
pedal. However, greater foot pressure on the
brake pedal will be required to stop the ve-
hicle. The stopping distance will be longer.
WARNING
•If the engine is not running or is turned
off while driving, the power assist for
the brakes will not work. Braking will be
harder.
•Do not coast with the engine stopped.When the brake pedal is depressed slowly
and firmly, you may hear a clicking noise and
feel a slight pulsation. This is normal and
indicates that the Brake Assist System is op-
erating (if equipped).
Using brakes
Avoid resting your foot on the brake pedal
while driving. This will overheat the brakes,
wear out the brake linings/pads faster, and
increase fuel consumption.
To help reduce brake wear and to prevent the
brakes from overheating, reduce speed and
downshift to a lower gear before going down
a slope or long grade. Overheated brakes
may reduce braking performance and could
result in loss of vehicle control.
While driving on a slippery surface, be careful
when braking, accelerating or downshifting.
Abrupt braking or acceleration could cause
the wheels to skid and result in an accident.
Wet brakes
When the vehicle is washed or driven through
water, the brakes may get wet. As a result,
your braking distance will be longer and the
vehicle may pull to one side during braking.
To dry the brakes, drive the vehicle at a safe
speed while lightly depressing the brake
pedal to heat up the brakes. Do this until the
BRAKE SYSTEM
5-90Starting and driving

brakes return to normal. Avoid driving the
vehicle at high speeds until the brakes func-
tion correctly.
Driving uphill
When starting on a steep gradient, it is some-
times difficult to operate the brake. Use the
parking brake to hold the vehicle. When ready
to start, make sure that the shift lever is in an
appropriate forward or reverse driving posi-
tion, release the parking brake while depress-
ing the accelerator pedal. If your vehicle has
an electric parking brake, this will automati-
cally release when you depress the accelera-
tor pedal (DCT models).
Driving downhill
The engine braking action is effective for
controlling the vehicle while descending hills.
A low gear position in the manual shift mode,
low enough to obtain sufficient engine brak-
ing, should be selected.
Parking brake break-in
Break in the parking brake shoes whenever the
stopping effect of the parking brake is weak-
ened or whenever the parking brake shoes
and/or drums/rotors are replaced, in order to
assure the best braking performance.
This procedure is described in the vehicle ser-
vice manual and can be performed by an
INFINITI retailer.
ANTI-LOCK BRAKING SYSTEM
(ABS)
WARNING
The Anti-lock Braking System (ABS) is a
sophisticated device, but it cannot prevent
accidents resulting from careless or dan-
gerous driving techniques. It can help
maintain vehicle control during braking on
slippery surfaces. Remember that stopping
distances on slippery surfaces will be lon-
ger than on normal surfaces even with
ABS. Stopping distances may also be lon-
ger on rough, gravel or snow covered
roads, or if you are using tire chains. Al-
ways maintain a safe distance from the ve-
hicle in front of you. Ultimately, the driver
is responsible for safety.
Tire type and condition may also affect
braking effectiveness.
–When replacing tires, install the specified
size of tires on all four wheels.–When installing a replacement tire, make
sure that it is the proper size and type as
specified on the tire and loading informa-
tion label. (See "Wheels and Tires".)
–For detailed information, see "Wheels and
tires".
The Anti-lock Braking System (ABS) controls
the brakes so the wheels do not lock during
hard braking or when braking on slippery sur-
faces. The system detects the rotation speed
at each wheel and varies the brake fluid pres-
sure to prevent each wheel from locking and
sliding. By preventing each wheel from lock-
ing, the system helps the driver maintain
steering control and helps to minimize swerv-
ing and spinning on slippery surfaces.
Using system
Depress the brake pedal and hold it down.
Depress the brake pedal with firm steady pres-
sure, but do not pump the brakes. The ABS will
operate to prevent the wheels from locking up.
Steer the vehicle to avoid obstacles.
WARNING
Do not pump the brake pedal. Doing so may
result in increased stopping distances.
Starting and driving5-91

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

CAUTION
•When VDC is deactivated, the
VDC OFF warning light lights up con-
tinuously.
•If both thewarning light and
warning light are lit continuously, VDC
is not available due to a malfunction.
TRACTION CONTROL SYSTEM
(TCS)
The Traction Control System (TCS) is part of
VDC.
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull
away and accelerate on slippery surfaces, for
example if the road surface is slippery on one
side. In addition, more drive torque is trans-
ferred to the wheel or wheels with traction.
Traction control remains active if you deacti-
vate VDC.
CHARACTERISTICS OF VDC
If theVDC warning light goes out before
beginning the journey, VDC is automatically
active.If VDC intervenes, the
VDC warning
light flashes in the combination meter.
If VDC intervenes:
•Do not deactivate VDC under any circum-
stances.
•When pulling away, only depress the ac-
celerator pedal as far as is necessary.
•Adapt your driving style to suit the prevail-
ing road and weather conditions.
Deactivating/activating VDC
WARNING
If you deactivate VDC, VDC no longer
stabilizes the vehicle. There is an increased
risk of skidding and an accident.
Only deactivate VDC in the situations
described in the following section.
You can select between the following sta-
tuses of VDC:
•VDC is activated.
•VDC is deactivated.
It may be best to deactivate VDC in the fol-
lowing situations:
•When using snow chains.
•In deep snow.
•On sand or gravel.NOTE
Activate VDC as soon as the situations de-
scribed above no longer apply. VDC will oth-
erwise not be able to stabilize the vehicle if
the vehicle starts to skid or a wheel starts to
spin.
You can activate/deactivate VDC using the
vehicle information display. To activate/
deactivate VDC:
1. Start the engine
2. Press the
orbutton on the
steering wheel to select the [DriveAssist]
menu in the vehicle information display.
3. Press the
orbutton to select
VDC.
4. Press thebutton on the steering
wheel. The current selection is displayed.
5. To activate/deactivate: press the
button again.
VDC is deactivated if the
warning
light in the combination meter lights up
continuously when the engine is running.
Characteristics when VDC is deactivated:
If VDC is deactivated and one or more wheels
start to spin, the
VDC warning light
flashes in the combination meter. In such
situations, VDC will not stabilize the vehicle.
5-94Starting and driving

8 Do-it-yourself
Maintenance precautions.................8-2
Engine compartment check locations.........8-3
2.0L Gasoline engine.................8-3
Engine cooling system...................8-3
Checking engine coolant level............8-4
Changing engine coolant...............8-4
Engine oil...........................8-5
Checking engine oil level...............8-5
Changing engine oil..................8-5
Changing engine oil filter...............8-6
Automatic Transmission Fluid (ATF)..........8-7
Brake fluid..........................8-7
Window washer fluid...................8-8
Battery............................8-9
Accessing Vehicle battery...............8-9
Maintenance free battery..............8-10
Models with Idle Stop/Start System.......8-10
Battery replacement.................8-10
Reinitialisation procedure after battery
reconnection......................8-12
Jump-starting.....................8-12
Drive belt..........................8-12
Spark plugs.........................8-12
Air cleaner filter......................8-13
Wiper blades........................8-13Cleaning.........................8-13
Replacing front window wiper blades......8-14
Replacing rear window wiper blade.......8-16
Brakes............................8-17
Self-adjusting brakes.................8-17
Fuses.............................8-17
Before replacing a fuse...............8-17
Engine compartment.................8-18
Passenger compartment..............8-19
Intelligent Key battery replacement........
.8-20
Checking the battery.................8-21
Replacing the battery.................8-21
Lights............................8-23
Exterior and interior lights..............8-23
Replacement procedures..............8-25
Wheels and tires......................8-27
Tire Pressure......................8-27
Tire inflation pressure................8-30
Tire labeling......................8-30
Types of tires.....................8-32
Tire chains.......................8-33
Tire wear and damage................8-33
Tire rotation......................8-34
Replacing wheels and tires.............8-34
Wheel balance.....................8-36

7. Make sure that wiper blade1is seated
correctly.
8. Move the wiper arm back onto the rear
window.If the brakes do not operate properly, it is
recommended that you have the brakes
checked. It is recommended that you visit an
INFINITI retailer for this service.
SELF-ADJUSTING BRAKES
Your vehicle is equipped with self-adjusting
brakes. The disc-type brakes self-adjust ev-
ery time the brake pedal is applied.Blown fuses must be replaced with fuses of
the same rating, which you can recognize by
the color and fuse rating. The fuse ratings are
listed in the fuse allocation chart.
If the newly inserted fuse also blows, have
the cause traced and rectified. It is recom-
mended you visit an INFINITI retailer for this
service.
The fuses in your vehicle disconnect faulty
circuits. if a fuse blows, all the components on
the circuit and their functions will fail.
BEFORE REPLACING A FUSE
•Secure the vehicle against rolling away.
•Switch off all electrical consumers.
•Remove the key from the ignition lock.
The fuses are located in various fuse boxes:
•Fuse box in the engine compartment on
the left-hand side of the vehicle, when
viewed in the direction of travel.
•Fuse box in the front-passenger footwell.
The fuse allocation chart is on the fuse box in
the front-passenger footwell.
BRAKES FUSES
Do-it-yourself8-17

primary latch is released. When driving in ar-
eas using road salt or other corrosive materi-
als, check lubrication frequently.
Lights*:
Clean the headlights on a regular basis. Make
sure that the headlights, stop lights, tail lights,
turn signal lights, and other lights are all op-
erating properly and installed securely. Also
check the aim of the headlights.
Road wheel nuts (lug nuts)*:
When checking the tires, make sure no wheel
nuts are missing, and check for any loose
wheel nuts. Tighten if necessary.
Tire rotation*:
Tires should be rotated every 5,000 miles
(8,000 km). Tires marked with directional
indicators can only be rotated between front
and rear. Make sure that the directional indi-
cators point in the direction of wheel rotation
after the tire rotation is completed.
Tires*:
Check the pressure with a gauge often and
always prior to long distance trips. Adjust the
pressure in all tires to the pressure specified.
Check carefully for damage, cuts or excessive
wear.Tire Pressure Monitoring System (TPMS)
transmitter components:
Replace the TPMS transmitter grommet seal,
valve core and cap when the tires are re-
placed due to wear or age.
Wheel alignment and balance:
If the vehicle should pull to either side while
driving on a straight and level road, or if you
detect uneven or abnormal tire wear, there
may be a need for wheel alignment.
If the steering wheel or seat vibrates at nor-
mal highway speeds, wheel balancing may be
needed.
For additional information regarding tires, re-
fer to “Important Tire Safety Information”
(US) or “Tire Safety Information” (Canada) in
the INFINITI Warranty Information Booklet.
Windshield:
Clean the windshield on a regular basis.
Check the windshield at least every six
months for cracks or other damage. Have a
damaged windshield repaired by a qualified
repair facility.
Wiper blades*:
Check for cracks or wear if not functioning
correctly. Replace as necessary.Inside the vehicle
The maintenance items listed here should be
checked on a regular basis, such as when
performing scheduled maintenance, cleaning
the vehicle, etc.
Accelerator pedal:
Check the pedal for smooth operation and
make sure that the pedal does not catch or
require uneven effort. Keep the floor mat
away from the pedal.
Automatic transmission P (Park) mecha-
nism:
On a fairly steep hill, check that your vehicle is
held securely when P (Park) has been acti-
vated, without applying any brakes.
Brake pedal*:
Check the pedal for smooth operation. If the
brake pedal suddenly goes down further than
normal, the pedal feels spongy or the vehicle
seems to take longer to stop, have your ve-
hicle checked immediately. It is recommended
you visit an INFINITI retailer for this service.
Keep the floor mat away from the pedal.
Brakes:
Check that the brakes do not pull the vehicle
to one side when applied.
Maintenance and Schedules9-3

11 Index
A
ABS (Anti-lock Braking System).......2-9
Warning light................2-9
Active sound enhancement.........5-69
Operation..................5-69
Adaptive Front lighting System.......2-67
Aids.......................5-62
Forward emergency braking system . .5-62
Hill Start Assist (HSA)..........5-95
Intelligent Parking Assist (IPA).....5-70
Air bags....................1-45
Front passenger air bag switch.....1-45
Overview...................0-2
Repair and replacement.........1-54
Supplemental Restraint System.....1-37
Warning light............1-53, 2-12
Air cleaner filter................8-13
Air conditioner................4-29
Heater and air conditioner........4-29
Refrigerant and lubricant........10-6
Servicing..................4-38
Specification label............10-11
Air fresheners..................7-4
Antenna....................4-39
Anti-theft alarm system...........2-60
Around View Monitor............4-11
Moving object detection (MOD). . . .4-24Settings...................4-20
Audible reminders..............2-14
Automatic transmission............8-7
Fluid (ATF)..................8-7
Operation..................5-18
B
Battery......................8-9
Caution label................8-9
Cold weather...............5-96
Jump-starting...............6-10
Replacement - Intelligent Key......8-20
Saver system................2-89
Vehicle battery...............8-9
Blind Spot Warning (BSW) system.....5-36
Booster seats.................1-34
Precautions.................1-34
Brakes.....................8-17
ABS (Anti-Lock Braking System). . . .5-91
Adjustment.................8-17
Fluid......................8-7
Forward emergency braking system . .5-62
Parking brake...............5-27
Precautions................5-90
System...................5-90
Warning light................2-9
Break-in schedule..............5-84Brightness...................2-71
Instrument panel..............2-71
C
Capacities and recommendations.....10-2
Coolant...................10-2
Fuel.....................10-2
Oil......................10-2
Refrigerant.................10-2
Card holder..................2-81
CB radio....................4-39
Changing....................8-4
Engine coolant...............8-4
Engine oil...................8-5
Engine oil filter...............8-6
Tires and wheels.............8-34
Checking.....................8-4
Coolant level.................8-4
Engine oil level...............8-5
Child restraints................1-19
Anchorage.................1-22
ISOFIX installation............1-23
Precautions.................1-19
Child safety..................1-17
Rear door locks...............3-7
Cleaning.....................7-3
Alloy wheels.................7-3