maintenance INFINITI QX 2011 Repair Manual

NOTE:
If the extended storage switch malfunctions or if
the fuse is open, it is not necessary to replace
the switch. In this case, remove the extended
storage switch and replace it with a new fuse of
the same rating.
How to remove the extended storage switch:
1. To remove the extended storage switch,be sure the ignition switch is in the OFF or
LOCK position.
2. Be sure the headlight switch is in the OFF position.
3. Remove the fuse box cover.
4. Pinch the locking tabs
1found on each
side of the storage switch.
5. Pull the storage switch straight out from the fuse box
2.
Replace the battery as follows:
1. Release the lock knob at the back of the
Intelligent Key and remove the mechanical
key. 2. Insert a small screwdriver into the slit 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
electric terminals as it 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
bottom of the case.
SDI2451
INTELLIGENT KEY BATTERY REPLACEMENT
8-24Maintenance and do-it-yourself

4. Align the tips of the upper and lower parts
1, and then push them together until it
is securely closed
2.
5. Push the buttons two or three times to check its operation.
See an INFINITI retailer if you need any assis-
tance for replacement. FCC Notice:
This device complies with Part 15 of FCC Rules
and RSS-Gen of IC Rules. Operation is subject to
the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, in-
cluding interference that may cause undesired
operation of this device.
SDI2452
Maintenance and do-it-yourself8-25

1. Map light
2. Park light
3. Front side marker light
4. Front turn signal light
5. Fog light6. Headlight (high-beam, low-beam)
7. Puddle light
8. Step light
9. Side turn signal light
10. Cargo light11. High-mounted stop light
12. Front armrest light
13. Rear armrest light
14. Rear personal light
15. Rear combination light
(tail/stop/turn signal/side marker light)
16. Tail light
17. Back-up light
18. License plate light
SDI2606
LIGHTS
8-26Maintenance and do-it-yourself

HEADLIGHTS
Replacing
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 retailer.
Xenon headlight bulb :
If replacement is required, see an INFINITI re-
tailer.
WARNING
HIGH VOLTAGE
When xenon headlights are on, they produce a
high voltage. To prevent an electric shock,
never attempt to modify or disassemble. Al-
ways have your xenon headlights replaced at
an INFINITI retailer. For additional information,
see “HEADLIGHT AND TURN SIGNAL SWITCH” in
the “2. Instruments and controls” section.
EXTERIOR AND INTERIOR LIGHTS
ItemWattage (W)Bulb No.
Headlight* High/Low beams (Xenon) 35D2S
Front turn signal light* 21WY21W
Fog light* 35H8
Park light* 5W5W
Front side marker light* 5W5W
Rear combination light* tail 5W5W
back-up 16W16W
stop/tail LED—
side marker LED—
turn signal 21WY21W
License plate light 5W5W
Puddle light* LED—
Front and rear armrest light* LED—
Map light 8—
Rear personal light 8—
Cargo light 8—
Vanity mirror light 2—
Step light* 8—
High-mounted stop light* LED—
*: See an INFINITI retailer for replacement.
NOTE: Always check with the Parts Department at an INFINITI retailer for the latest information about
parts.
Maintenance and do-it-yourself8-27

Replacement procedures
All other lights are either type A, B, C, D, E or F.
When replacing a bulb, first remove the lens
and/or cover.
SDI1679
Map light
SDI2030
Rear personal light
SDI2031
8-28Maintenance and do-it-yourself

If you have a flat tire, see “FLAT TIRE” in the “6. In
case of emergency” section.
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 and the
CHECK TIRE PRESSURE warning (if so equipped)
appears in the dot matrix liquid crystal 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 warn-
ing light” in the “2. Instruments and controls”
section, “TIRE PRESSURE MONITORING SYSTEM
(TPMS)” in the “5. Starting and driving” section
and “TIRE PRESSURE MONITORING SYSTEM
(TPMS)” in the “6. In case of emergency” sec-
tion.
Tire inflation pressure
Check the pressure of the tires (includ-
ing the spare) often and always prior to
long distance trips. The recommended
tire pressure specifications are shown
on the Tire and Loading Information
label under the “Cold Tire Pressure”
heading. The Tire and Loading Informa-
tion 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
been parked for 3 or more hours, or
driven less than 1 mile (1.6 km) at mod-
erate speeds.
Cargo light
SDI1729
Vanity mirror light
SDI2032
WHEELS AND TIRES
Maintenance and do-it-yourself8-29

TPMS also provides visual and audible
signals outside the vehicle for inflating
the tires to the recommended COLD tire
pressure. (See “TPMS with Tire Inflation
Indicator” in the “5. Starting and driv-
ing” section about the TPMS with Tire
Inflation Indicator.)
Incorrect tire pressure, including under
inflation, may adversely affect tire life
and vehicle handling.
WARNING
●Improperly inflated tires can fail sud-
denly and cause an accident.
●The Gross Vehicle Weight rating
(GVWR) is located on the F.M.V.S.S./
C.M.V.S.S. certification label. The ve-
hicle weight capacity is indicated on
the Tire and Loading Information la-
bel. Do not load your vehicle beyond
this capacity. Overloading your ve-
hicle may result in reduced tire life,
unsafe operating conditions due to
premature tire failure, or unfavorable
handling characteristics and could
also lead to a serious accident. Load-
ing beyond the specified capacity
may also result in failure of other ve-
hicle 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.
●For additional information regarding
tires, refer to “Important Tire Safety
Information” (US) or “Tire Safety In-
formation” (Canada) in the Warranty
Information Booklet.
8-30
Maintenance and do-it-yourself

Tire and Loading Information label
1Seating capacity: The maximum num-ber of occupants that can be seated
in the vehicle.
2Vehicle load limit: See “VEHICLE
LOADING INFORMATION” in the “9.
Technical and consumer informa-
tion” section.
3Original size: The size of the tires
originally installed on the vehicle at
the factory.
4Cold 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.
5Tire size — see “TIRE LABELING” later
in this section.
6Spare tire size or compact spare tire
size (if so equipped)
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Maintenance and do-it-yourself8-31

Checking the 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 it 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 re-
lease 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/
50R22 111H
240 kPa,
35 PSI
P275/
60R20
114H 240 kPa,
35 PSI
REAR
ORIGINAL TIRE P275/
50R22 111H
240 kPa,
35 PSI
P275/
60R20
114H 240 kPa,
35 PSI
SPARE TIRE P275/
50R22 111H 240 kPa,
35 PSI
P275/
60R20
114H 240 kPa,
35 PSI
SDI1949
8-32Maintenance and do-it-yourself

TIRE LABELING
Federal law requires tire manufacturers
to place standardized information on the
sidewall of all tires. This information
identifies and describes the fundamen-
tal characteristics of the tire and also
provides the tire identification number
(TIN) for safety standard certification.
The TIN can be used to identify the tire in
case of a recall.
1Tire size (example: P215/60R16 94H)
1.P: The “P” 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 (60): This number,
known as the aspect ratio, gives the
tire’s ratio of height to width.
4.R: The “R” stands for radial.
5.Two-digit number (16): This number is
the wheel or rim diameter in inches.
6.Two- or three-digit number (94): 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
SDI1575
Example
SDI1606
Maintenance and do-it-yourself8-33