2020 INFINITI Q50 Radio

8-26Do-it-yourself
SDI1258A
Trunk lightIf you have a flat tire, see “Flat tire” (P.6-3).
TIRE PRESSURE
Tire Pressure Monitoring System
(TPMS)
WARNING
Radio waves could adversely affect
electric medical equipment. Those who
use a pacemaker should contact the
electric medical equipment manufacturer
for the possible influences before use.
This vehicle is equipped with the Tire
Pressure Monitoring System (TPMS). It
monitors tire pressure of all tires except the
spare. When the low tire pressure warning
light is lit and the “Tire Pressure Low - Add
Air” warning appears in the vehicle informa-
tion display, one or more of your tires is
significantly under-inflated.
The TPMS will activate only when the
vehicle is driven at speeds above 16 MPH
(25 km/h). Also, this system may not detect
a sudden drop in tire pressure (for example a
flat tire while driving).
For more details, see “Low tire pressure
warning light” (P.2-12),“Tire Pressure Mon-
itoring System (TPMS)” (P.5-5) and “Tire Pressure Monitoring System (TPMS)” (P.6-
3).
Tire inflation pressure
Check the pressure of the tires (in-
cluding the spare) often and always
prior to long distance trips. The
recommended tire pressure specifica-
tions are shown on the Tire and
Loading Information label under the
“Cold Tire Pressure” heading. The Tire
and Loading Information label is
affixed to the driver side center pillar.
Tire pressures should be checked
regularly because:
.
Most tires naturally lose air over
time.
. Tires can lose air suddenly when
driven over potholes or other ob-
jects or if the vehicle strikes a curb
while parking.
The tire pressures should be checked
when the tires are cold. The tires are
considered COLD after the vehicle
has been parked for 3 or more hours,
or driven less than 1 mile (1.6 km) at
moderate speeds.
WHEELS AND TIRES

The wheel nuts must be kept tigh-
tened to the specification at all times.
It is recommended that wheel nuts be
tightened to the specification at each
tire rotation interval.
WARNING
.After rotating the tires, check
and adjust the tire pressure.
. Retighten the wheel nuts when
the vehicle has been driven for
600 miles (1,000 km) (also in
cases of a flat tire, etc.).
. Do not include the T-type spare
tire or any other small size
spare tire in the tire rotation.
. For additional information re-
garding tires, refer to “Impor-
tant Tire Safety Information”
(US) or “Tire Safety Informa-
tion” (Canada) in the Warranty
Information Booklet.
After the ignition switch is placed in
the ON position, it may take a period of time for the tire pressure to be
displayed in the vehicle information
display while the vehicle is driven.
Depending on the radio wave circum-
stance, tire pressure may not cor-
rectly be displayed.
Tire rotation (models equipped with
different size tires on front and rear)
Tires cannot be rotated on this vehi-
cle, as front tires are a different size
from rear tires.
A pin is on the front brake rotor to
prevent the rear wheels from being
installed in place of the front wheels.
The spare tire can be installed in place
of the front and rear wheels. When
installing the spare tire in the front
wheel, the hole in the spare tire wheel
must be aligned with the pin on the
brake rotor.
WARNING
.
If your vehicle is equipped with
different size front and rear
tires, never install the rear tire/wheel on the front of the
vehicle. Doing so can damage
the vehicle or tire. Damage to
the tire may result in a sudden
loss of air pressure which may
cause loss of vehicle control in
some driving conditions and
cause a collision and personal
injury.
. Retighten the wheel nuts when
the vehicle has been driven for
600 miles (1,000 km) (also in
cases of a flat tire, etc.).
. For additional information re-
garding tires, refer to “Impor-
tant Tire Safety Information”
(US) or “Tire Safety Informa-
tion” (Canada) in the Warranty
Information Booklet.
After the ignition switch is placed in
the ON position, it may take a period
of time for the tire pressure to be
displayed in the vehicle information
display while the vehicle is driven.
Depending on the radio wave circum-
stance, tire pressure may not cor-
Do-it-yourself8-35

Replacing wheels and tires
When replacing a tire, use the same size,
tread design, speed rating and load carrying
capacity as originally equipped. (See “Speci-
fications” (P.10-8) for recommended types
and sizes of tires and wheels.)
After the ignition switch is placed in the ON
position, it may take a period of time for the
tire pressure to be displayed in the vehicle
information display while the vehicle is
driven. Depending on the radio wave circum-
stance, tire pressure may not correctly be
displayed.
WARNING
.The use of tires other than those
recommended or the mixed use of
tires of different brands, construc-
tion (bias, bias-belted, radial or run-
flat), or tread patterns can adversely
affect the ride, braking, handling,
ground clearance, body-to-tire clear-
ance, tire chain clearance, speed-
ometer calibration, headlight aim
and bumper height. Some of these
effects may lead to accidents and
could result in serious personal injury.
. For Two-Wheel Drive (2WD) models,
if your vehicle was originally equipped with 4 tires that were the
same size and you are only replacing
2 of the 4 tires, install the new tires
on the rear axle. Placing new tires on
the front axle may cause loss of
vehicle control in some driving condi-
tions and cause an accident and
personal injury.
. If the wheels are changed for any
reason, always replace with wheels
which have the same off-set dimen-
sion. Wheels of a different off-set
could cause premature tire wear,
degrade vehicle handling character-
istics and/or interference with the
brake discs/drums. Such interference
can lead to decreased braking effi-
ciency and/or early brake pad/shoe
wear. See “Wheels and tires” (P.10-
9) of this manual for wheel off-set
dimensions.
. Since the spare tire is not equipped
with the TPMS, when a spare tire is
mounted or a wheel is replaced, the
TPMS will not function and the low
tire pressure warning light will flash
for approximately 1 minute. The light
will remain on after 1 minute. Have
your tires replaced and/or TPMS
system reset as soon as possible. It
is recommended you visit an INFINITI
retailer for these services. .
Replacing tires with those not origin-
ally specified by INFINITI could affect
the proper operation of the TPMS.
. The TPMS sensor may be damaged if
it is not handled correctly. Be careful
when handling the TPMS sensor.
. When replacing the TPMS sensor, the
ID registration may be required. It is
recommended you contact an
INFINITI retailer for ID registration.
. Do not use a valve stem cap that is
not specified by INFINITI. The valve
stem cap may become stuck.
. Be sure that the valve stem caps are
correctly fitted. Otherwise the valve
may be clogged up with dirt and
cause a malfunction or loss of pres-
sure.
. Do not install a damaged or deformed
wheel or tire even if it has been
repaired. Such wheels or tires could
have structural damage and could fail
without warning.
. The use of retread tire is not recom-
mended.
. For additional information regarding
tires, refer to “Important Tire Safety
Information” (US) or “Tire Safety
Information” (Canada) in the War-
Do-it-yourself8-37

11 Index
A
ABS (Anti-lock Braking System) ................... 5-127
Active Lane Control ............................................ 5-25
Active noise cancellation ................................. 5-138
Active sound enhancement ............................ 5-138
Active trace control ......................................... 5-130
Air bag systemFront-seat mounted side-impact
supplemental air bag system ..................... 1-55
Roof-mounted curtain side-impact
supplemental air bag system ..................... 1-55
Air bag warning labels ....................................... 1-58
Air bag warning light .............................. 1-58, 2-15
Air cleaner housing filter ................................... 8-15
Air conditioner
Air conditioner operation ............................ 4-36
Air conditioner service ................................ 4-42
Air conditioner specification label ......... 10-13
Air conditioning system refrigerant
and lubricant recommendations .... 4-42, 10-7
Automatic air conditioner ........................... 4-37
DUAL mode setting ..................................... 4-40
Heater and air conditioner .......................... 4-36
Servicing air conditioner ............................. 4-42
Air deflectors ...................................................... 10-15
Alarm How to stop alarm (see vehicle
security system) ............................................ 2-30
Alcohol, drugs and driving ................................ 5-10 Antenna .................................................................. 4-43
Anti-lock Braking System (ABS) ................... 5-127
Appearance care
Exterior appearance care ............................... 7-2
Interior appearance care ................................ 7-5
Armrest ...................................................................... 1-7
Around View
®Monitor ...................................... 4-11
Audible reminders ................................................. 2-17
Autolight system .................................................. 2-35
Automatic Automatic air conditioner ........................... 4-37
Automatic Transmission Fluid (ATF) ......... 8-9
Driving with automatic transmission ....... 5-16
Automatic door locks ............................................ 3-5
Automatic drive positioner ............................... 3-32
Automatic seat positioner ................................ 3-32
Avoiding collision and rollover ............................ 5-9
B
Back-up Collision Intervention (BCI) .............. 5-61
Battery .................................................................... 8-11
Battery replacement, Intelligent Key ......... 3-2
Battery saver system .................................... 2-38
Intelligent Key ................................................. 8-19
Variable voltage control system ............... 8-13
Before starting the engine ................................ 5-14
Belts (See drive belts) ......................................... 8-13
Blind Spot Intervention
®(BSI) ......................... 5-48
Blind Spot Warning (BSW) .............................. 5-40 Brake
Anti-lock Braking System (ABS) ............. 5-127
Brake fluid ...................................................... 8-10
Brake force distribution ............................. 5-129
Brake system ................................................ 5-126
Parking brake operation ............................. 5-20
Brake warning light .............................................. 2-11
Break-in schedule .............................................. 5-119
Bulb check/instrument panel ........................... 2-10
Bulb replacement ................................................. 8-22
C
Camera aiding sonar function ......................... 4-25
Capacities and
recommended fluids/lubricants ....................... 10-2
Car phone or CB radio ....................................... 4-43
Card holder ............................................................ 2-48
Catalytic converter Three-way catalyst ......................................... 5-5
Changing intercooler coolant ............................. 8-6
Chassis control ................................................... 5-132
Check tire pressure warning ............................. 2-21
Checking intercooler coolant level .................... 8-6
Child restraints ...................................................... 1-21 LATCH system ............................................... 1-23
Precautions on child restraints .................. 1-21
Child safety ............................................................ 1-19
Child safety rear door lock .................................. 3-6

Maintenance requirements ........................... 9-2
Maintenance schedules ................................. 9-6
Maintenance under severe
driving conditions .......................................... 9-10
Outside the vehicle ......................................... 9-2
Seat belt maintenance ................................. 1-18
Standard maintenance .................................... 9-7
Under the hood and vehicle ......................... 9-4
Maintenance schedules ........................................ 9-6
Malfunction indicator light (MIL) .................... 2-16
Map lights .............................................................. 2-54
Master warning light .......................................... 2-14
Mechanical key (Intelligent Key system) .......... 3-3
Memory storage Automatic drive positioner ......................... 3-33
Meter
Trip computer ................................................. 2-26
Meters and gauges ................................................ 2-6 Instrument brightness control .................. 2-40
Mirror Inside mirror .................................................... 3-29
Outside mirrors ............................................. 3-30
Vanity mirror ................................................... 3-32
Monitor Around View
®Monitor ................................ 4-11
RearView Monitor ........................................... 4-3
Moonroof ............................................................... 2-52
Moving Object Detection (MOD) .................. 4-30
N
New vehicle break-in ........................................ 5-119
O
Odometer .................................................................. 2-7
Off-road recovery .................................................. 5-9
Oil
Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine oil and filter ...................... 8-7
Checking engine oil level ............................... 8-7
Engine oil ........................................................... 8-7
Engine oil viscosity ........................................ 10-7
One touch unlock sensor (See Intelligent
Key system) .............................................................. 3-9
Operation Indicators for operation ............................... 2-20
Outside air temperature .................................... 2-28
Outside mirrors .................................................... 3-30
Overheat, If your vehicle overheats .................. 6-7
Owner’s Manual/Service Manual
order information ............................................. 10-23
P
Panic alarm ............................................................ 3-17
Parking
Parking brake operation ............................. 5-20
Parking on hills ............................................. 5-123
Parking brake break-in .................................... 5-127 Personal lights ...................................................... 2-54
PERSONAL mode ............................................... 5-24
Phone
Car phone or CB radio ................................ 4-43
Power Power door lock ............................................... 3-4
Power outlet .................................................. 2-44
Power steering system ............................. 5-124
Power windows ............................................. 2-49
Power moonroof ................................................. 2-52
Power steering warning light ........................... 2-14
Pre-crash seat belts with
comfort function .................................................. 1-14
Precautions Braking precautions .................................... 5-126
Child restraints ............................................... 1-21
Cruise control ................................................. 5-69
Maintenance ..................................................... 8-2
Seat belt usage .............................................. 1-12
Supplemental restraint system ................. 1-40
When starting and driving ............................ 5-4
Predictive Forward Collision
Warning (PFCW) ............................................... 5-110
Push starting ............................................................ 6-7
Push-button ignition switch .............................. 5-11R
Radio Car phone or CB radio ................................ 4-43
Rain-sensing auto wiper system ..................... 2-33
Rapid air pressure loss .......................................... 5-9
11-5