2010 INFINITI QX power steering

The power assisted steering uses a hydraulic
pump, driven by the engine, to assist steering.
If the engine stops or the drive belt breaks, you
will still have control of the vehicle. However,
much greater steering effort is needed, especially
in sharp turns and at low speeds.
WARNING
If the engine is not running or is turned off
while driving, the power assist for the
steering will not work. Steering will be
harder to operate.The brake system has two separate hydraulic
circuits. If one circuit malfunctions, you will still
have braking at 2 wheels.
BRAKE PRECAUTIONS
Vacuum assisted brakes
The brake booster aids braking by using engine
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 vehicle and stopping dis-
tance will be longer.
Using the brakes
Avoid resting your foot on the brake pedal while
driving. This will overheat the brakes, wear out the
brake pads faster, and reduce gas mileage.
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.
WARNING
●
While driving on a slippery surface, be
careful when braking, accelerating or
downshifting. Abrupt braking or accel-
erating could cause the wheels to skid
and result in an accident.
● 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.
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 pressing the brake pedal to
heat up the brakes. Do this until the brakes return
to normal. Avoid driving the vehicle at high
speeds until the brakes function correctly.
Parking brake break-in
Break-in the parking brake shoes whenever the
stopping effect of the parking brake is weakened
or whenever the parking brake shoes and/or
drum/rotors are replaced, in order to assure the
best brake performance.
POWER STEERING BRAKE SYSTEM
Starting and driving5-49
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6. After the engine cools down, check the cool-ant level in the engine coolant reservoir tank
with the engine running. Add coolant to the
engine coolant reservoir tank if necessary.
Have your vehicle repaired at an INFINITI
dealer. When towing your vehicle, all State (Provincial in
Canada) and local regulations for towing must be
followed. Incorrect towing equipment could dam-
age your vehicle. Towing instructions are avail-
able from an INFINITI dealer. Local service opera-
tors are generally familiar with the applicable laws
and procedures for towing. To assure proper
towing and to prevent accidental damage to your
vehicle, INFINITI recommends having a service
operator tow your vehicle. It is advisable to have
the service operator carefully read the following
precautions:
WARNING
●
Never ride in a vehicle that is being
towed.
● Never get under your vehicle after it has
been lifted by a tow truck.
CAUTION
● When towing, make sure that the trans-
mission, axles, steering system and
powertrain are in working condition. If
any of these conditions apply, dollies or
a flatbed tow truck must be used.
● Always attach safety chains before
towing. For information about towing your vehicle behind
a recreational vehicle (RV) , refer to “Flat towing”
in the “Technical and consumer information” sec-
tion of this manual.
TOWING RECOMMENDED BY
INFINITI
TOWING YOUR VEHICLE
In case of emergency6-11
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8 Maintenance and do-it-yourself
Maintenance requirements..........................8-2
General maintenance ..............................8-2
Explanation of general maintenance items .........8-2
Maintenance precautions . . . ........................8-5
Engine compartment check locations ................8-6
Engine cooling system .............................8-7
Checking engine coolant level ...................8-7
Changing engine coolant ........................8-8
Engine oil .........................................8-8
Checking engine oil level ........................8-8
Changing engine oil ............................8-9
Changing engine oil filter .......................8-10
5-speed automatic transmission fluid ...............8-11
Power steering fluid ............................... 8-11
Brake fluid ....................................... 8-12
Brake fluid . . . ................................. 8-12
Window washer fluid ............................. 8-12
Window washer fluid reservoir ..................8-12
Battery .......................................... 8-13
Jump starting ................................. 8-14
Variable voltage control system .....................8-15
Drive belt ........................................ 8-15Spark plugs
...................................... 8-16
Replacing spark plugs . . .......................8-16
Air cleaner ....................................... 8-17
In-cabin microfilter ............................. 8-17
Windshield wiper blades .......................... 8-19
Cleaning ..................................... 8-19
Replacing .................................... 8-19
Brakes .......................................... 8-22
Fuses ........................................... 8-23
Engine compartment ........................... 8-23
Passenger compartment . . . ....................8-25
Battery replacement .............................. 8-25
INFINITI Intelligent Key™ ........................ 8-26
Lights ........................................... 8-27
Headlights .................................... 8-27
Exterior and interior lights . . . ....................8-28
Wheels

and tires ................................. 8-32
Tire pressure .................................. 8-32
Tire labeling ................................... 8-35
Types of tires .................................. 8-38
Tire chains .................................... 8-39
Changing wheels and tires .....................8-39
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Steering wheelCheck for changes in the steer-
ing system, such as excessive freeplay, hard
steering or strange noises.
Warning lights and chimes Make sure all
warning lights and chimes are operating properly.
Windshield wiper and washer* Check that
the wipers and washer operate properly and that
the wipers do not streak.
Windshield defroster Check that the air
comes out of the defroster outlets properly and in
sufficient quantity when operating the heater or
air conditioner.
Under the hood and vehicle
The maintenance items listed here should be
checked periodically (for example, each time you
check the engine oil or refuel) .
Battery* Check the fluid level in each cell. It
should be between the MAX and MIN lines. Ve-
hicles operated in high temperatures or under
severe conditions require frequent checks of the
battery fluid level.
Brake fluid level* Make sure that the brake fluid
level is between the MIN and MAX lines on the
reservoir.
Engine coolant level* Check the coolant level
when the engine is cold. Engine drive belts*
Make sure the drive belts
are not frayed, worn, cracked or oily.
Engine oil level* Check the level after parking
the vehicle on a level surface with the engine off.
Wait more than 10 minutes for the oil to drain
back into the oil pan.
Exhaust system Make sure there are no loose
supports, cracks or holes. If the sound of the
exhaust seems unusual or there is a smell of
exhaust fumes, immediately have the exhaust
system inspected by an INFINITI dealer. See the
carbon monoxide warning in the “Starting and
driving” section of this manual.
Fluid leaks Check under the vehicle for fuel, oil,
water or other fluid leaks after the vehicle has
been parked for a while. Water dripping from the
air conditioner after use is normal. If you should
notice any leaks or if gasoline fumes are evident,
check for the cause and have it corrected imme-
diately.
Power steering fluid level* and lines Check
the level when the fluid is cold, with the engine
off. Check the lines for proper attachment, leaks,
cracks, etc.
Radiator and hoses Check the front of the
radiator and clean off any dirt, insects, leaves, etc., that may have accumulated. Make sure the
hoses have no cracks, deformation, rot or loose
connections.
Underbody
The underbody is frequently ex-
posed to corrosive substances such as those
used on icy roads or to control dust. It is very
important to remove these substances from the
underbody, otherwise rust may form on the floor
pan, frame, fuel lines and exhaust system. At the
end of winter, the underbody should be thor-
oughly flushed with plain water, in those areas
where mud and dirt may have accumulated. See
the “Appearance and care” section of this
manual.
Windshield washer fluid* Check that there is
adequate fluid in the reservoir.
8-4Maintenance and do-it-yourself
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1. Battery
2. Fuse/fusible link box
3. Transmission dipstick
4. Engine oil filler cap
5. Brake fluid reservoir
6. Windshield washer fluid reservoir
7. Air cleaner
8. Drive belt location
9. Radiator cap
10. Power steering fluid reservoir
11. Engine oil dipstick
12. Engine coolant reservoir
NOTE:
Engine cover removed for clarity.
WDI0630
ENGINE COMPARTMENT CHECK
LOCATIONS
8-6Maintenance and do-it-yourself
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5. Wipe the engine oil filter sealing surface witha clean rag.
CAUTION
Be sure to remove any old gasket material
remaining on the sealing surface of the
engine. Failure to do so could lead to an
oil leak and engine damage.
6. Coat the gasket on the new filter with clean engine oil.
7. Screw on the oil filter until a slight resistance is felt, then tighten an additional 2/3 turn.
8. Start the engine and check for leakage around the oil filter. Correct as required.
9. Turn the engine off and wait more than 10 minutes. Check the oil level. Add engine oil if
necessary. When checking or replacement is required, we
recommend your INFINITI dealer for servicing.
CAUTION
●
Use Genuine NISSAN Matic S ATF. If
Genuine NISSAN Matic S ATF is not
available, Genuine NISSAN Matic J ATF
may also be used.
● Using automatic transmission fluid
other than Genuine NISSAN Matic S
ATF or Matic J ATF will cause deteriora-
tion in driveability and automatic trans-
mission durability, and may damage the
automatic transmission, which is not
covered by the INFINITI new vehicle lim-
ited warranty.
The specified automatic transmission fluid is also
described on caution labels located in the engine
compartment. The fluid level should be checked using the HOT
MAX range on the power steering fluid reservoir
at fluid temperatures of 122° - 176°F (50° -
80°C) or using the COLD MAX range on the
power steering fluid reservoir at fluid tempera-
tures of 32° - 86°F (0° - 30°C) .
If the fluid is at or below the MIN line, add Genu-
ine NISSAN PSF to HOT MAX or COLD MAX
depending on system fluid temperature. Remove
the cap and fill through the opening.
CAUTION
●
DO NOT OVERFILL.
● Recommended fluid is Genuine
NISSAN PSF or equivalent.
WDI0256
5-SPEED AUTOMATIC
TRANSMISSION FLUID POWER STEERING FLUID
Maintenance and do-it-yourself8-11
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CAUTION
●Do not ground accessories directly to
the battery terminal. Doing so will by-
pass the variable voltage control sys-
tem and the vehicle battery may not
charge completely.
● Use electrical accessories with the en-
gine running to avoid discharging the
vehicle battery.
Your vehicle is equipped with a variable voltage
control system. This system measures the
amount of electrical discharge from the battery
and controls voltage generated by the generator. The current sensor
Ais located near the battery
along the negative battery cable. If you add elec-
trical accessories to your vehicle, be sure to
ground them to a suitable body ground such as
the frame or engine block area.
1. Power steering fluid pump
2. Automatic belt tensioner
3. Water pump
4. Cooling fan
5. Air conditioner compressor
6. Crankshaft pulley
7. Generator
WARNING
Be sure the ignition key is in the OFF or
LOCK position before servicing drive belt.
The engine could rotate unexpectedly.
WDI0566WDI0661
VARIABLE VOLTAGE CONTROL
SYSTEM DRIVE BELT
Maintenance and do-it-yourself8-15
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The following are approximate capacities. The actual refill capacities may be slightly different. When refilling, follow the procedure
described in the “Maintenance and do-it-yourself” section to determine the proper refill capacity.
Capacity (Approximate)Recommended Fluids and Lubricants
US measure Imp measure Liter
Fuel 28 gal23-1/4 gal 105.8 Unleaded gasoline with an octane rating of at least 87 AKI (RON 91)*1
Engine oil *7 Drain and RefillWith oil filter change 6-7/8 qt 5-3/4 qt 6.5 Engine oil with API Certification Mark *2
Viscosity SAE 5W-30 *2
Without oil filter change 6-1/2 qt 5-1/2 qt 6.2
Cooling system With reservoir 3-3/4 gal 3-1/8 gal 14.4 50% Genuine NISSAN Long Life Antifreeze/Coolant or equivalent
50% Demineralized or distilled water
Automatic transmission fluid Refill to the proper level according to the instructions in
the “Maintenance and do-it-yourself” section. Genuine NISSAN Matic S ATF *3
Power steering fluid (PSF) Genuine NISSAN PSF or equivalent.*4
Brake fluid Genuine NISSAN Super Heavy Duty Brake Fluid *5 or equivalent DOT 3
Multi-purpose grease ———NLGI No. 2 (Lithium Soap base)
Air conditioning system refrigerant — ——HFC-134a (R-134a) *6
Air conditioning system oil ———NISSAN A/C System Oil Type S or equivalent *6
Transfer fluid 3-1/8 qt 2-5/8 qt 3.0 Genuine NISSAN Matic D ATF (Continental U.S. and Alaska) or Canada
NISSAN Automatic Transmission Fluid or equivalent (if available)
Front differential gear oil 3-3/8 pt 2-7/8 pt 1.6 Genuine NISSAN Differential Oil Hypoid Super GL-5 80W-90 OR API GL-5
Viscosity SAE 80W-90 *8
Rear differential gear oil 3-3/4 pt 3-1/8 pt 1.75 API GL-5 Synthetic 75W-90 gear oil or equivalent *9
Windshield washer fluid (shared between
front and rear wipers) 1-1/4 gal 1 gal
4.5Genuine NISSAN Windshield Washer Concentrate Cleaner & Antifreeze or
equivalent
*1: For further details, see “Fuel recommendation.”
*2: For further details, see “Engine oil and oil filter recommendations.”
*3: If Genuine NISSAN Matic S ATF is not available, Genuine NISSAN Matic J ATF may also be used. Using automatic transmission fluid other than Genuine NISSAN Matic S ATF or Matic J ATF will cause deterioration in driveability and automatic transmission durability, and may damage the automatic transmission, which is not covered by the INFINITI new ve-
hicle limited warranty.
*4: DEXRON™ VI type ATF or Canada NISSAN Automatic Transmission Fluid may also be used.
*5: Available in mainland USA through your INFINITI dealer.
*6: For further details, see “Air conditioner specification label.”
*7: For further details, see “Changing engine oil.”
*8: For hot climates, viscosity SAE 90 is suitable for ambient temperatures above 0° C (32° F) .
*9: See your INFINITI dealer for service.
CAPACITIES AND RECOMMENDED
FUEL/LUBRICANTS
9-2Technical and consumer information
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