2023 INFINITI QX55 brakes

When the vehicle is stopped on a hill, the hill
start assist system automatically keeps the
brakes applied to help prevent the vehicle
from rolling backward in the time it takes the
driver to release the brake pedal and apply
the accelerator.
The hill start assist system will operate auto-
matically under the following conditions:
• The transmission is shifted to a forward orreverse gear.
• The vehicle is stopped completely on a hill by applying the brake. The maximum hold-
ing time is 2 seconds. After 2 seconds the
vehicle will begin to roll back and the hill
start assist system will stop operating
completely.
The hill start assist system will not operate
when the shift lever is placed in the N (Neu-
tral), the Park button is pressed to place the
vehicle in the P (Park) position or on a flat and
level road.
The Hill Start Assist function status can be
checked in the “Chassis Control” mode in the
vehicle information display. For additional in-
formation, see “Vehicle information display”
(P. 2-19). The sonar system sounds a tone to inform the
driver of obstacles near the bumper.
When the sonar system is turned on, the
sonar view will automatically appear in the
touch screen display when the camera is
activated.
WARNING
• The sonar system is a convenience but it
is not a substitute for proper parking.
• The driver is always responsible for
safety during parking and other maneu-
vers. Always look around and check that
it is safe to do so before parking.
LSD4775LSD2993
FRONT AND REAR SONAR SYSTEM
(if so equipped)
Starting and driving5-147

•Read and understand the limitations of
the sonar system as contained in this
section. The colors of the sonar indicator
indicates different distances to the
object.
• Inclement weather or ultrasonic sources
such as an automatic car wash, a truck’s
compressed-air brakes or a pneumatic
drill may affect the function of the sys-
tem; this may include reduced perfor-
mance or a false activation.
• The sonar system is designed as an aid to
the driver in detecting large stationary
objects to help avoid damaging the
vehicle.
• The sonar system is not designed to pre-
vent contact with small or moving ob-
ject. Always move slowly. The system
will not detect small objects below the
bumper, and may not detect objects
close to the bumper or on the ground.
• The sonar system may not detect the fol-
lowing objects: fluffy objects such as
snow, cloth, cotton, glass-wool, etc.;
thin objects such as rope, wire and chain,
etc.; or wedge-shaped objects.CAUTION
• Excessive noise (such as audio system
volume or an open vehicle window) will
interfere with the tone and it may not be
heard.
• The front and rear sonar detect the dis-
tance between the vehicle and the ob-
stacle by detecting the sound wave re-
flected from the surface of an obstacle.
When there is a sound such as horn, or an
ultrasonic source (such as sonar of other
vehicles) around the vehicle, the sonar
may not detect objects properly.
• Keep the sonar sensors (located on the
bumper fascia) free from snow, ice and
large accumulations of dirt. Do not clean
the sonar with sharp objects. If the sen-
sors are covered, the accuracy of the so-
nar function will be diminished.
SYSTEM OPERATION
The system informs with a visual and audible
signal of front obstacles when the shift lever
is in the D (Drive) position and both front and
rear obstacles when the shift lever is in the R
(Reverse) position. Sonar Operation Table
FR Sensor RR Sensor
Range Sound Display Sound Display Px † x†
Roooo
Nx † x † Do o x †
o – Display/Beep when detect
† – Display on camera view
x – No Display and Beep
The system is deactivated at speeds above 6
mph (10 km/h). It is reactivated at lower
speeds.
The intermittent tone will stop after 3 sec-
onds when an obstacle is detected by only
the corner sensor and the distance does not
change. The tone will stop when the obstacle
get away from the vehicle.
When the object is detected, the indicator
(green) appears and blinks and the tone
sounds intermittently. When the vehicle
moves closer to the object, the color of the
indicator turns yellow and the rate of the
blinking increases. When the vehicle is very
close to the object, the indicator stops blink-
ing and turns red, and the tone sounds
continuously.
5-148Starting and driving

The system indicatorsOAwill appear when
the vehicle moves closer to an object.
SONAR LIMITATIONS
WARNING
Listed below are the system limitations for
the sonar system. Failure to operate the
vehicle in accordance with these system
limitations could result in serious injury or
death. •
Read and understand the limitations of
the sonar system as contained in this
section. Inclement weather may affect
the function of the sonar system; this
may include reduced performance or a
false activation.
• The sonar system is deactivated at
speeds above 6 mph (10 km/h). It is re-
activated at lower speeds.
• Inclement weather or ultrasonic sources
such as an automatic car wash, a truck’s
compressed-air brakes or a pneumatic
drill may affect the function of the sonar
system; this may include reduced perfor-
mance or a false activation.
• The sonar system is not designed to pre-
vent contact with small or moving ob-
jects. Always move slowly. The system
will not detect small objects below the
bumper or on the ground.
• The sonar system may not detect the fol-
lowing objects: fluffy objects such as
snow, cloth, cotton, glass-wool, etc.;
thin objects such as rope, wire and chain,
etc.; or wedge-shaped objects; complex-
shaped objects or multiple objects in
close. •
The sonar system may not detect objects
at speeds above 3 mph (5 km/h) and may
not detect certain angular or moving
objects.
• The sonar system may not operate in the
following conditions:
– When rain, snow, ice, dirt, etc. ad- heres to the sonar.
– When a loud sound is heard in the area around the vehicle.
– When the surface of the obstacle is diagonal to the front or rear of the
vehicle.
– When a sonar or the area around the sensor is extremely hot or cold.
• The sonar system may unintentionally
operate in the following conditions:
– When there is overgrown grass in the area around the vehicle.
– When there are bumps, protrusions or manhole covers on the road
surface.
– When the vehicle drives through a draped flag or a curtain.
– When there is an accumulation of snow or ice behind the vehicle.
– When driving on a steep hill.
LSD4242
Starting and driving5-151

8 Do-it-yourself
Maintenance precautions........................8-2
Engine compartment check locations .............8-3
Engine cooling system .......................... 8-4
Checking engine coolant level .................8-5
Changing engine coolant ......................8-5
Engine oil ........................................8-6
Checking engine oil level .......................8-6
Changing engine oil and oil filter ...............8-6
Continuously Variable Transmission (CVT) fluid . 8-10
Brake fluid ..................................... 8-10
Windshield-washer fluid ......................... 8-11
Windshield-washer fluid reservoir .............8-11
Battery ........................................ 8-12
Jump starting ............................... 8-14
Variable voltage control system ................8-14
Drive belt ...................................... 8-15
Spark plugs .................................... 8-15
Replacing spark plugs ....................... 8-15
Air cleaner ..................................... 8-16
In-cabin microfilter .......................... 8-17Windshield wiper blades
........................ 8-17
Cleaning .................................... 8-17
Replacing ................................... 8-17
Brakes ......................................... 8-19
Fuses .......................................... 8-20
Engine compartment ........................ 8-20
Passenger compartment ....................8-21
Battery replacement ........................... 8-22
INFINITI Intelligent Key .....................8-22
Lights ......................................... 8-24
Headlights .................................. 8-24
Fog lights ................................... 8-24
Exterior and interior lights ...................8-25
Wheels and tires ............................... 8-27
Tire pressure ................................ 8-27
Tire labeling ................................ 8-31
Types of tires ............................... 8-35
Tire chains .................................. 8-37
Changing

wheels and tires ................... 8-38

Rear window wiper blade
If checking or replacement is required, it is
recommended that you visit an INFINITI re-
tailer for this service.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 front and rear disc-type brakes self-
adjust every time the brake pedal is applied.
WARNING
Have your brake system checked if the
brake pedal height does not return to nor-
mal. It is recommended that you visit an
INFINITI retailer for this service.
Brake pad wear indicators
The disc brake pads on your vehicle have
audible wear indicators. When a brake pad
requires replacement, a high pitched scraping
or screeching sound will be heard when the
vehicle is in motion. The noise will be heard
whether or not the brake pedal is depressed.
Have the brakes checked as soon as possible
if the wear indicator sound is heard. Under some driving or climate conditions, oc-
casional brake squeak, squeal or other noise
may be heard. Occasional brake noise during
light to moderate stops is normal and does
not affect the function or performance of the
brake system.
Proper brake inspection intervals should be
followed.
For additional information regard-
ing brake inspections, refer to the appropri-
ate maintenance schedule information in the
"Maintenance and schedules" section of this
manual.
BRAKES
Do-it-yourself8-19

Doors and engine hood:Check that the doors
and engine hood operate properly. Also en-
sure that all latches lock securely. Lubricate
hinges, latches, latch pins, rollers and links if
necessary. Make sure that the secondary
latch keeps the hood from opening when the
primary latch is released.
When driving in areas using road salt or other
corrosive materials, check lubrication
frequently.
Check that the gas stays or struts properly
and securely hold the hood, trunk, or rear
hatch fully open. If the hood, trunk, or rear
hatch is not held open, have the gas stays or
struts replaced.
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 operating properly and installed
securely. Also check headlight aim.
Road wheel nuts (lug nuts)*: When checking
the tires, make sure no wheel nuts are miss-
ing, and check for any loose wheel nuts.
Tighten if necessary.
Tire rotation*: Rotate tires at the specified
interval shown in the maintenance schedule.
Tires*: Check the pressure with a gauge of-
ten and always prior to long distance trips. If necessary, adjust the pressure in all tires, in-
cluding the spare, to the pressure specified.
Check carefully for damage, cuts or excessive
wear.
Tire Pressure Monitoring System (TPMS)
tire pressure sensor:
It is recommended that
you replace the TPMS tire pressure sensor
assembly when the tires are replaced 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 un-
even 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. It is recommended that you have
a damaged windshield repaired by an INFINITI
retailer, or an INFINITI Certified Collision Cen- ter. To locate a collision center in your area,
refer to http://collision.infinitiusa.com.
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 the pedal
does not catch or require uneven effort. Keep
the floor mat away from the pedal.
Brake pedal: Check the pedal for smooth op-
eration. 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 vehicle checked immediately.
It is recommended that 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.
Continuously Variable Transmission (CVT) P
(Park) position mechanism: On a fairly steep
hill check that the vehicle is held securely with
the shift position in the P (Park) position
without applying any brakes.
Maintenance and schedules9-3

These data can help provide a better under-
standing of the circumstances in which
crashes and injuries occur. NOTE: EDR data
are recorded by your vehicle only if a non-
trivial crash situation occurs; no data are re-
corded by the EDR under normal driving con-
ditions and no personal data (e.g., name,
gender, age, and crash location) are recorded.
However, other parties, such as law enforce-
ment, could combine the EDR data with the
type of personally identifying data routinely
acquired during a crash investigation.
To read data recorded by an EDR, special
equipment is required, and access to the ve-
hicle or the EDR is needed. In addition to the
vehicle manufacturer and INFINITI retailer,
other parties, such as law enforcement, that
have the special equipment, can read the in-
formation if they have access to the vehicle or
the EDR.
EDR data will only be accessed with the con-
sent of the vehicle owner or lessee or as
otherwise required or permitted by law.ADDITIONAL DATA RECORDING
(on vehicles equipped with optional
ProPILOT Assist)
If your vehicle is equipped with the optional
ProPILOT Assist, it will also be equipped with
a supplemental vehicle data recording
function.
The data recording function is designed to
record such data as:
• Driver operational status of accelerator,brakes, steering, etc.
• Detection status of a vehicle ahead and lane markers
• Vehicle information including distance to vehicle ahead and lateral position
• Information on the operation of the ProPI- LOT Assist and other crash avoidance
features
• ProPILOT Assist malfunction diagnosis information
• External images from multi-sensing front camera (Available only when SRS air bag or
FEB with Pedestrian Detection system is
activated)
ProPILOT Assist does not record conversa-
tions, sounds or images of the inside of the
vehicle. To read this vehicle data, special equipment is
required and access to the vehicle or the re-
cording unit is needed. This vehicle data will
only be accessed with the consent of the
vehicle owner or lessee or as otherwise re-
quired or permitted by law.
If downloaded, NISSAN may use the data
recorded for the purpose of improving
NISSAN's vehicle safety performance.
NISSAN will not disclose/provide the re-
corded data to a third party except:
• With the consent of the vehicle owner or
with the consent of the lessee
• In response to an official request from law enforcement, a court order, governmental
agency, or other legally enforceable
requests
• For use as part of NISSAN's defense of litigation
• For research purposes after the data is modified such that it is no longer tied to a
specific vehicle or vehicle owner
If you have any questions regarding the data
NISSAN may collect about you, please visit our
Privacy Policy: https://www.infinitiusa.com.
Technical and consumer information10-25

11 Index
A
Active Engine Brake............5-145Active noise cancellation
Active sound enhancement......5-155Active Ride Control........... .5-146Active Trace Control............5-144Aiming control, headlights.........2-45Air bag (See supplemental restraint
system).................... .1-41Air bag system
Front (See supplemental front impact air
bag system)
............... .1-49Air bag warning labels............1-61Air bag warning light.........1-62, 2-12Air bag warning light,
supplemental............ .1-62, 2-12Air cleaner.................. .8-16Air cleaner housing filter..........8-16Air conditioner
Air conditioner operation........4-34Air conditioner specification label. .10-12Air conditioner system refrigerant and oil
recommendations............ .10-7Heater and air conditioner (automatic)
(if so equipped)............. .4-33Heater and air conditioner controls. .4-34Servicing air conditioner.........4-41Alarm system (See vehicle security
system).................... .2-33Anchor point locations............1-26
Antenna................... .4-41Anti-lock brake warning light. . . .2-10, 2-13Anti-lock Braking System (ABS).....5-140Antifreeze..................5-153Armrests.................... .1-5Around View® Monitor...........4-11Autolight switch.............. .2-41Automatic
Automatic power window switch. . .2-67Automatic anti-glare inside mirror.....3-34Automatic brake hold........... .5-26Automatic door locks............ .3-6
B
Battery............... .5-153, 8-12Charge warning light...........2-10Battery replacement............ .8-22INFINITI Intelligent Key.........8-22Key fob.................. .8-22Before starting the engine.........5-16Belt (See drive belt).............8-15Blind Spot Intervention® (BSI).......5-53Blind Spot Warning (BSW).........5-45Booster seats................ .1-38Brake
Anti-lock Braking System (ABS). . .5-140Brake fluid................ .8-10Brake light (See stop light)........8-25Brake system...............5-139
Brake warning light............2-10Brake wear indicators......2-18, 8-19Self-adjusting brakes...........8-19Brake Assist................ .5-141Brake fluid.................. .8-10Brake system................5-139Brakes.................... .8-19Break-in schedule..............5-131Brightness control
Instrument panel............ .2-46Bulb check/instrument panel........2-10Bulb replacement............. .8-25
C
C.M.V.S.S. certification label.......10-11Camera Aiding Sonar (parking sensor). .4-24Capacities and recommended
fuel/lubricants............... .10-2Car phone or CB radio...........4-42Cargo (See vehicle loading
information)................ .10-15Cargo area storage bin...........2-62Cargo cover................. .2-64Cargo light..................2-70Chassis control...............5-144Check tire pressure.............2-28Child restraint with top tether strap. . . .1-25Child restraints. . . .1-19, 1-20, 1-21, 1-23