Infiniti Qx (2009 year). Manual — part 24
If the brakes do not operate properly, have the
brakes checked by an INFINITI dealer.
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
See an INFINITI dealer for a brake system
check if the brake pedal height does not
return to normal.
Brake pad wear indicators
The disc brake pads on your vehicle have audible
wear indicators. When a brake pad requires re-
placement, a high pitched scraping or screech-
ing 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, occa-
sional 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, see the
Maintenance Log section of your “INFINITI Ser-
vice and Maintenance Guide” booklet for mainte-
nance intervals.
Two types of fuses are used. Type
s
A
is used in
the fuse boxes in the engine compartment. Type
s
B
is used in the passenger compartment fuse
box.
Type A fuses are provided as spare fuses. They
are stored in the passenger compartment fuse
box.
Type A fuses can be installed in the engine com-
partment and passenger compartment fuse
boxes.
LDI0455
BRAKES
FUSES
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If a type A fuse is used to replace a type B fuse,
the type A fuse will not be level with the fuse
pocket as shown in the illustration. This will not
affect the performance of the fuse. Make sure the
fuse is installed in the fuse box securely.
Type B fuses cannot be installed in the under-
hood fuse boxes. Only use type A fuses in the
underhood fuse boxes.
ENGINE COMPARTMENT
CAUTION
Never use a fuse of a higher or lower
amperage rating than specified on the
fuse box cover. This could damage the
electrical system or cause a fire.
If any electrical equipment does not come on,
check for an open fuse.
1. Be sure the ignition switch and the headlight
switch are OFF.
2. Open the engine hood.
3. Remove the fuse box cover by pushing the
tab and lifting the cover up.
4. Remove the fuse with the fuse puller. The
fuse puller is located in the center of the fuse
block in the passenger compartment.
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5. If the fuse is open
s
A
, replace it with a new
fuse
s
B
.
6. If a new fuse also opens, have the electrical
system checked and repaired by an INFINITI
dealer.
Fusible links
If the electrical equipment does not operate and
fuses are in good condition, check the fusible
links. If any of these fusible links are melted,
replace with only genuine NISSAN parts.
PASSENGER COMPARTMENT
CAUTION
Never use a fuse of a higher or lower
amperage rating than specified on the
fuse box cover. This could damage the
electrical system or cause a fire.
If any electrical equipment does not operate,
check for an open fuse.
1. Be sure the ignition switch and the headlight
switch are OFF.
2. Open the glove box to access the fuse box
cover.
Type A
WDI0452
Type B
LDI0456
LDI0618
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3. Pull the fuse box cover to remove.
4. Remove the fuse with the fuse puller.
5. If the fuse is open, replace it with an equiva-
lent good fuse.
6. Push the fuse box cover to install.
7. If a new fuse also opens, have the electrical
system checked and repaired by an INFINITI
dealer.
CAUTION
Be careful not to allow children to swallow
the battery and removed parts.
WDI0620
BATTERY REPLACEMENT
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INTELLIGENT KEY
Replace the battery in the Intelligent Key as fol-
lows:
1. Remove the mechanical key from the Intelli-
gent Key.
2. Insert a small screwdriver
s
A
into the slit
s
B
of the corner and twist it to separate the
upper part from the lower part. Use a cloth to
protect the casing.
3. Replace the battery with a new one.
Recommended battery: CR2025 or equiva-
lent.
● Do not touch the internal circuit and elec-
tric terminals as doing so could cause a
malfunction.
● Hold the battery by the edges. Holding
the battery across the contact points will
seriously deplete the storage capacity.
● Make sure that the + side faces the bot-
tom of the case.
4. Close the lid securely as illustrated
s
C
s
D
.
5. Operate the buttons to check the operation.
See an INFINITI dealer if you need assistance for
replacement.
FCC Notice:
Changes or modifications not expressly ap-
proved by the party responsible for compli-
ance could void the user’s authority to op-
erate the equipment.
This device complies with Part 15 of the
FCC Rules and RSS-210 of Industry
Canada.
Operation is subject to the following two
conditions: (1) This device may not cause
harmful interference, and (2) this device
must accept any interference received, in-
cluding interference that may cause undes-
ired operation of the device.
WDI0621
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HEADLIGHTS
Replacing the xenon headlight bulb
(Low-beam)
If replacement is required, see an INFINITI dealer.
WARNING
c
HIGH VOLTAGE
When xenon headlights are on, they pro-
duce a high voltage. To prevent an electric
shock, never attempt to modify or disas-
semble. Always have your xenon head-
lights replaced at an INFINITI dealer. For
additional information, see “Headlight
and turn signal switch” in the “Instru-
ments and controls” section.
Replacing the halogen headlight bulb
(High-beam)
The headlight is a semi-sealed beam type which
uses a replaceable headlight (halogen) bulb. Be-
cause the headlight assembly must be removed
from the vehicle for bulb replacement, see your
INFINITI dealer.
CAUTION
● High pressure halogen gas is sealed
inside the halogen bulb. The bulb may
break if the glass envelope is scratched
or the bulb is dropped.
● When handling the bulb, do not touch
the glass envelope.
● DO NOT TOUCH THE BULB WITH BARE
HANDS.
● Use the same number and wattage as
originally installed:
Low beam:
Wattage: 35
Bulb no.: D2R*
High beam:
Wattage: 60
Bulb no.: 9005*
*: Always check with the Parts Depart-
ment at an INFINITI dealer for the latest
parts information.
● Do not leave the bulb out of the head-
light reflector for a long period of time
as dust, moisture and smoke may enter
the headlight body and affect the per-
formance of the headlight.
● Aiming is not necessary after replacing
the bulb. When aiming adjustment is
necessary, contact an INFINITI dealer.
Fog may temporarily form inside the lens of the
exterior lights in the rain or in a car wash. A
temperature difference between the inside and
the outside of the lens causes the fog. This is not
a malfunction. If large drops of water collect
inside the lens, contact an INFINITI dealer.
LIGHTS
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EXTERIOR AND INTERIOR LIGHTS
Item
Wattage (W)
Bulb No.
Headlight assembly*
High
60/65
HB3/9005
Low
35
D2R
Park
7
3057K & 916
Sidemarker
7
916
Front fog light*
55
H3
Turn*
21
7440
Puddle light
8
906
Side turn signal light*
(LED)
—
Room/map lights
8
—
Personal lights
6
WXW5Z
Footwell*
3.4
158
Glove box light*
3.4
158
Vanity mirror light
1.32
—
Step light
3.8
194
Cargo light
8
AL67
High-mounted stop light*
(LED)
—
Rear combination light
Tail/Stop*
(LED)
—
Backup (reversing)*
—
—
Turn
27
3156K
License plate light*
—
—
* See an INFINITI dealer for replacement.
Always check with the Parts Department at an INFINITI dealer for the latest parts information.
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1.
Room/map light
2.
Front personal lights
3.
Step light
4.
Puddle light/Side turn signal light
5.
High-mount stoplight
6.
Cargo light
7.
Rear turn signal light
8.
Headlight assembly
9.
Fog light
Replacement procedures
All other lights are either type A, B, C or D. When
replacing a bulb, first remove the lens, lamp
and/or cover.
Indicates bulb removal
Indicates bulb installation
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Use a cloth
s
1
to protect the housing.
Use a cloth
s
1
to protect the housing.
Use a cloth
s
1
to protect the housing.
Room/map lights
LDI0389
Personal lights
LDI0364
Vanity mirror
LDI0385
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Use a cloth
s
1
to protect the housing.
Use a cloth
s
1
to protect the housing.
Use a cloth
s
1
to protect the housing.
Step light
LDI0341
Puddle light
LDI0388
Cargo light
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If you have a flat tire, see the “In case of
emergency” section of this manual.
TIRE PRESSURE
Tire Pressure Monitoring System
(TPMS)
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, one or more of your
tires is significantly under-inflated. The
system also displays pressure of all tires
(except the spare tire) on the display
screen by sending a signal from a sensor
that is installed in each wheel.
The TPMS will activate only when the
vehicle is driven at speeds above 16 MPH
(26 km/h). Also, this system may not de-
tect a sudden drop in tire pressure (for
example a flat tire while driving).
For more details, refer to “Low tire pres-
sure warning light”in the “Instruments and
controls” section, “Tire pressure informa-
tion”in the “Monitor, climate, audio, phone
and voice recognition systems” section,
“Tire Pressure Monitoring System” in the
“Starting and driving” section, and “Flat
tire” in the “In case of emergency” section.
Tire inflation pressure
Check the tire pressures (including the
spare) often and always prior to long dis-
tance trips. The recommended tire pres-
sure specifications are shown on the
F.M.V.S.S./C.M.V.S.S. certification label
or 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 objects
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
Rear turn signal light
WDI0415
WHEELS AND TIRES
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been parked for 3 or more hours, or driven
less than 1 mile (1.6 km) at moderate
speeds.
Incorrect tire pressure, including un-
der inflation, may adversely affect
tire life and vehicle handling.
WARNING
● Improperly inflated tires can fail
suddenly and cause an accident.
● The Gross Vehicle Weight Rating
(GVWR)
is
located
on
the
F.M.V.S.S./C.M.V.S.S.
certifica-
tion label. The vehicle weight ca-
pacity is indicated on the Tire and
Loading Information label (if so
equipped). Do not load your ve-
hicle beyond this capacity. Over-
loading your vehicle may result in
reduced tire life, unsafe operat-
ing conditions due to premature
tire failure, or unfavorable han-
dling characteristics and could
also lead to a serious accident.
Loading beyond the specified ca-
pacity may also result in failure of
other vehicle components.
● Before taking a long trip, or
whenever you heavily load your
vehicle, use a tire pressure gauge
to ensure that the tire pressures
are at the specified level.
● Do not drive your vehicle over
85 MPH (137 km/h) unless it is
equipped with high speed rated
tires. Driving faster than 85 MPH
(137 km/h) may result in tire fail-
ure, loss of control and possible
injury.
● For additional information re-
garding tires, refer to “Important
Tire Safety Information” (US) or
“Tire
Safety
Information”
(Canada) in the Warranty Infor-
mation Booklet.
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Tire and loading information label
s
1
Seating capacity: The maximum num-
ber of occupants that can be seated
in the vehicle.
s
2
Vehicle load limit: See loading infor-
mation in the “Technical and con-
sumer information” section.
s
3
Original tire size: The size of the tires
originally installed on the vehicle at
the factory.
s
4
Cold tire pressure: Inflate the tires to
this pressure when the tires are cold.
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. The
recommended cold tire inflation is set
by the manufacturer to provide the
best balance of tire wear, vehicle
handling, driveability, tire noise, etc.,
up to the vehicle’s GVWR.
s
5
Tire size – refer to “Tire labeling” later
in this section.
s
6
Spare tire size or compact spare tire
size (if so equipped).
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Checking tire pressure
1. Remove the valve stem cap from the
tire.
2. Press the pressure gauge squarely
onto the valve stem. Do not press too
hard or force the valve stem side-
ways, or air will escape. If the hissing
sound of air escaping from the tire is
heard while checking the pressure,
reposition the gauge to eliminate this
leakage.
3. Remove the gauge.
4. Read the tire pressure on the gauge
stem and compare to the specifica-
tion shown on the Tire and Loading
Information label.
5. Add air to the tire as needed. If too
much air is added, press the core of
the valve stem briefly with the tip of
the gauge stem to release pressure.
Recheck the pressure and add or
release air as needed.
6. Install the valve stem cap.
7. Check the pressure of all other tires,
including the spare.
Size
Cold Tire Inflation
Pressure
Front Original Tire:
P275/60R20
240 kPa, 35 PSI
Rear Original Tire:
P275/60R20
240 kPa, 35 PSI
Spare Tire:
P275/60R20
240 kPa, 35 PSI
TIRE LABELING
Federal law requires tire manufacturers to
place standardized information on the
sidewall of all tires. This information iden-
tifies and describes the fundamental
characteristics of the tire and also pro-
vides the tire identification number (TIN)
for safety standard certification. The TIN
can be used to identify the tire in case of a
recall.
LDI0430
Example
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s
1
Tire size (example: P215/65R15 95H)
1. P: The
9P9 indicates the tire is de-
signed for passenger vehicles (not all
tires have this information).
2. Three-digit number (215): This num-
ber gives the width in millimeters of
the tire from sidewall edge to side-
wall edge.
3. Two-digit number (65): This number,
known as the aspect ratio, gives the
tire’s ratio of height to width.
4. R: The
9R9 stands for radial.
5. Two-digit number (15): This number
is the wheel or rim diameter in inches.
6. Two- or three-digit number (95): This
number is the tire’s load index. It is a
measurement of how much weight
each tire can support. You may not
find this information on all tires be-
cause it is not required by law.
7. H: Tire speed rating. You should not
drive the vehicle faster than the tire
speed rating.
Example
WDI0395
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s
2
TIN (Tire Identification Number) for a
new tire (example: DOT XX XX XXX
XXXX)
1. DOT: Abbreviation for the
9Depart-
ment Of Transportation.
9 The symbol
can be placed above, below or to the
left or right of Tire Identification Num-
ber.
2. Two-digit
code:
Manufacturer’s
identification mark
3. Two-digit code: Tire size
4. Three-digit code: Tire type code
(Optional)
5. Three-digit code: Date of Manufac-
ture
6. Four numbers represent the week
and year the tire was built. For ex-
ample, the numbers 3103 means the
31st week of 2003. If these numbers
are missing, then look on the other
sidewall of the tire.
s
3
Tire ply composition and material
The number of layers or plies of rubber-
coated fabric in the tire. Tire manufactur-
ers also must indicate the materials in the
tire, which include steel, nylon, polyester,
and others.
s
4
Maximum permissible inflation pres-
sure
This number is the greatest amount of air
pressure that should be put in the tire. Do
not exceed the maximum permissible in-
flation pressure.
s
5
Maximum load rating
This number indicates the maximum load
in kilograms and pounds that can be car-
ried by the tire. When replacing the tires
on the vehicle, always use a tire that has
the same load rating as the factory in-
stalled tire.
s
6
Term of “tubeless” or “tube type”
Indicates whether the tire requires an in-
ner tube (“tube type”) or not (“tubeless”).
Example
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