brake INFINITI G37 2010 Repair Manual

TOWING RECOMMENDED BY INFINITI
Two-Wheel Drive (2WD) models INFINITI recommends that your vehicle be towed
with the driving (rear) wheels off the ground or
place the vehicle on a flat bed truck as illustrated.
CAUTION● Never tow automatic transmission models
with the rear wheels on the ground or four
wheels on the ground (forward or backward),
as this may cause serious and expensive damage to the transmission. If it is neces-
sary to tow the vehicle with the front wheels
raised, always use towing dollies under the
rear wheels.
● When towing rear wheel drive models with the
front wheels on the ground or on towing dol-
lies: Push the ignition switch to the ACC or ON
position, and secure the steering wheel in a
straight-ahead position with a rope or similar
device. Never secure the steering wheel by
selecting the LOCK position. This may damage
the steering lock mechanism. ● If you have to tow manual transmission mod-
els with the rear wheels on the ground (if you
do not use towing dollies) or four wheels on
the ground:
– Push the ignition switch to the ON posi-
tion and turn off all accessories.
– Always release the parking brake.
– Move the transmission shift lever to the N
(Neutral) position.
– Observe the following restricted towing
speeds and distances for manual trans-
mission models only:
● Rear wheels on the ground:
Speed: Below 50 MPH (80 km/h)
Distance: Less than 50 miles (80 km)
● Four wheels on the ground:
Speed: Below 70 MPH (112 km/h)
Distance: Less than 500 miles (800 km)
– If the speed or distance must necessarily
be greater, remove the propeller shaft be-
fore towing to prevent damage to the
transmission.Two-wheel drive models SCE0788
6-12 In case of emergency
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Rear :
Do not use the tie down hooks
 1
for towing or
vehicle recovery.
CAUTION● Tow chains or cables must be attached only
to the vehicle recovery hooks or main struc-
tural members of the vehicle. Otherwise, the
vehicle body will be damaged.
● Do not use the vehicle tie downs to free a
vehicle stuck in sand, snow, mud, etc.
● Never tow a vehicle using the vehicle tie
downs or recovery hooks. ● Always pull the cable straight out from the
front of the vehicle. Never pull on the vehicle
at an angle.
● Pulling devices should be routed so they do
not touch any part of the suspension, steer-
ing, brake or cooling systems.
● Pulling devices such as ropes or canvas
straps are not recommended for use in ve-
hicle towing or recovery.
Rocking a stuck vehicle If your vehicle is stuck in sand, snow, mud, etc.,
use the following procedure:
1. Turn off the Vehicle Dynamic Control (VDC)
system.
2. Make sure the area in front and behind
the vehicle is clear of obstructions.
3. Turn the steering wheel right and left to
clear an area around the front tires.
4. Slowly rock the vehicle forward and back-
ward.
● Shift back and forth between R (reverse) and
D (drive) (automatic transmission models) or
1st (low) and R (reverse) (manual transmis-
sion models). ● Apply the accelerator as little as possible to
maintain the rocking motion.
● Release the accelerator pedal before shifting
between R and D (automatic transmission
models) or 1st and R (manual transmission
models).
● Do not spin the tires above 35 MPH (55
km/h).
5. If the vehicle cannot be freed after a few
tries, contact a professional towing ser-
vice to remove the vehicle.SCE0891
In case of emergency
6-15
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MOST COMMON FACTORS
CONTRIBUTING TO VEHICLE
CORROSION ● The accumulation of moisture-retaining dirt
and debris in body panel sections, cavities,
and other areas.
● Damage to paint and other protective coat-
ings caused by gravel and stone chips or
minor traffic accidents.
ENVIRONMENTAL FACTORS INFLUENCE
THE RATE OF CORROSION
Moisture Accumulation of sand, dirt and water on the
vehicle body underside can accelerate corro-
sion. Wet floor coverings will not dry completely
inside the vehicle, and should be removed for
drying to avoid floor panel corrosion.
Relative humidity Corrosion will be accelerated in areas of high
relative humidity, especially those areas where
the temperatures stay above freezing where
atmospheric pollution exists, or where road salt
is used. Temperature A temperature increase will accelerate the rate
of corrosion to those parts which are not well
ventilated.
Air pollution Industrial pollution, the presence of salt in the
air in coastal areas, or heavy road salt use will
accelerate the corrosion process. Road salt will
also accelerate the disintegration of paint sur-
faces.
TO PROTECT YOUR VEHICLE FROM
CORROSION ● Wash and wax your vehicle often to keep the
vehicle clean.
● Always check for minor damage to the paint
and repair it as soon as possible.
● Keep drain holes at the bottom of the doors
open to avoid water accumulation.
● Check the underbody for accumulation of
sand, dirt or salt. If present, wash with water
as soon as possible. CAUTION● NEVER remove dirt, sand or other debris from
the passenger compartment by washing it
out with a hose. Remove dirt with a vacuum
cleaner.
● Never allow water or other liquids to come in
contact with electronic components inside
the vehicle as this may damage them.
Chemicals used for road surface deicing are
extremely corrosive. They accelerate corrosion
and deterioration of underbody components
such as the exhaust system, fuel and brake
lines, brake cables, floor pan and fenders.
In winter, the underbody must be cleaned peri-
odically.
For additional protection against rust and cor-
rosion, which may be required in some areas,
consult an INFINITI retailer.CORROSION PROTECTION
7-6 Appearance and care
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8 Maintenance and do-it-yourself Maintenance requirement .......................... 8-2
Scheduled maintenance ........................ 8-2
General maintenance ........................... 8-2
Where to go for service ......................... 8-2
General maintenance .............................. 8-2
Explanation of maintenance items ............... 8-2
Maintenance precautions .......................... 8-5
Engine compartment check locations ................ 8-6
VQ37VHR engine ............................... 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 and filter ................... 8-9
Automatic transmission fluid ....................... 8-11
Power steering fluid ............................... 8-11
Brake and clutch fluid ............................ 8-12
Brake fluid ................................... 8-12
Clutch fluid (if so equipped) .................... 8-12
Window washer fluid ............................. 8-13
Battery .......................................... 8-13
Coupe ........................................ 8-13 Sedan and coupe ............................. 8-14
Jump starting ................................. 8-15
Variable voltage control system ................... 8-15
Drive belts ....................................... 8-16
Spark plugs ..................................... 8-16
Replacing spark plugs ......................... 8-17
Air cleaner ....................................... 8-17
Windshield wiper blades .......................... 8-18
Cleaning ...................................... 8-18
Replacing ..................................... 8-18
Brakes .......................................... 8-19
Self-adjusting brakes .......................... 8-19
Brake pad wear warning ....................... 8-19
Fuses ........................................... 8-20
Engine compartment ........................... 8-20
Passenger compartment ....................... 8-21
Intelligent
Key
battery replacement ................ 8-22
Lights ........................................... 8-23
Sedan ........................................ 8-23
Coupe ........................................ 8-24
Headlights .................................... 8-25
Exterior and interior lights ..................... 8-25
Wheels and tires ................................. 8-28
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When driving in areas using road salt or other
corrosive materials, check lubrication fre-
quently.
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 missing, and
check for any loose wheel nuts. Tighten if
necessary.
Tire rotation*: Tires should be rotated every
7,500 miles (12,000 km). If your vehicle is
equipped with different sized tires in the front
and rear, tires cannot be rotated.
Tires*: Check the pressure with a gauge often
and always prior to long distance trips. If nec-
essary, adjust the pressure in all tires, includ-
ing the spare, to the pressure specified. Check
carefully for damage, cuts or excessive wear.
Tire Pressure Monitoring System (TPMS) trans-
mitter components: Replace the TPMS transmit-
ter grommet seal, valve core and cap when the
tires are replaced due to wear or age.
Tire, wheel alignment and balance: If the vehicle
should pull to either side while driving on a straight and level road, or if you detect uneven
or abnormal tire wear, there may be a need for
wheel alignment.
If the steering wheel or seat vibrates at normal
highway speeds, wheel balancing may be
needed.
For additional information regarding tires, refer
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.
Windshield wiper blades*: Check for cracks or
wear if they do not wipe properly.
Inside the vehicle The maintenance items listed here should be
checked on a regular basis, such as when
performing periodic 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. Automatic transmission P (Park) mechanism: On
a fairly steep hill, check that your vehicle is held
securely with the selector lever in the P (Park)
position without applying any brakes.
Brake pedal: Check the pedal for smooth opera-
tion. If the brake pedal suddenly goes down
further than normal, the pedal feels spongy or
the vehicle seems to take longer to stop, see an
INFINITI retailer immediately. Keep the floor mat
away from the pedal.
Brakes: Check that the brakes do not pull the
vehicle to one side when applied.
Parking brake: Check the parking brake opera-
tion regularly. The vehicle should be securely
held on a fairly steep hill with only the parking
brake applied. If the parking brake needs ad-
justed, see an INFINITI retailer.
Seat belts: Check that all parts of the seat belt
system (for example, buckles, anchors, adjuster
and retractors) operate properly and smoothly,
and are installed securely. Check the belt web-
bing for cuts, fraying, wear or damage.
Seats: Check seat position controls such as
seat adjusters, seatback recliner, etc. to ensure
they operate smoothly and that all latches lock
securely in every position. Check that the head
Maintenance and do-it-yourself
8-3
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restraints move up and down smoothly and that
the locks (if so equipped) hold securely in all
latched positions.
Steering wheel: Check for changes in the steer-
ing conditions, such as excessive free play,
hard steering or strange noises.
Warning lights and chimes: Make sure that all
warning lights and chimes are operating prop-
erly.
Windshield defroster: Check that the air comes
out of the defroster outlets properly and in
sufficient quantity when operating the heater or
air conditioner.
Windshield wiper and washer*: Check that the
wipers and washer operate properly and that
the wipers do not streak.
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.
Vehicles operated in high temperatures or un-
der severe condition require frequent checks of
the battery fluid level. Brake fluid level*: Make sure that the brake
fluid level is between the MAX and MIN lines on
the reservoir.
Engine coolant level*: Check the coolant level
when the engine is cold.
Engine drive belts*: Make sure that no belt is
frayed, worn, cracked or oily.
Engine oil level*: Check the level after parking
the vehicle on a level spot and turning off the
engine. Wait more than 15 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 retailer. (See
“PRECAUTIONS WHEN STARTING AND DRIVING”
in the “5. Starting and driving” section for
exhaust gas (Carbon monoxide).)
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 cor-
rected immediately. 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, other-
wise rust will form on the floor pan, frame, fuel
lines and around the exhaust system. At the
end of winter, the underbody should be thor-
oughly flushed with plain water, being careful
to clean those areas where mud and dirt may
accumulate. For additional information, see
“CLEANING EXTERIOR” in the “7. Appearance
and care” section.
Windshield washer fluid*: Check that there is
adequate fluid in the reservoir.
8-4 Maintenance and do-it-yourself
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When performing any inspection or maintenance
work on your vehicle, always take care to prevent
serious accidental injury to yourself or damage to
the vehicle. The following are general precautions
which should be closely observed.
WARNING● Park the vehicle on a level surface, apply the
parking brake securely and block the wheels
to prevent the vehicle from moving. For
manual transmission models, move the shift
lever to N (Neutral). For automatic transmis-
sion models, move the selector lever to P
(Park).
● Be sure the ignition switch is in the OFF or
LOCK position when performing any parts
replacement or repairs.
● Never connect or disconnect the battery or
any transistorized component while the ig-
nition switch is in the ON position.
● Never leave the engine or automatic trans-
mission related component harnesses dis-
connected while the ignition switch is in the
ON position.
● If you must work with the engine running,
keep your hands, clothing, hair and tools
away from moving fans, belts and any other
moving parts. ● It is advisable to secure or remove any loose
clothing and remove any jewelry, such as
rings, watches, etc. before working on your
vehicle.
● Always wear eye protection whenever you
work on your vehicle.
● If you must run the engine in an enclosed
space such as a garage, be sure there is
proper ventilation for exhaust gases to
escape.
● Never get under the vehicle while it is sup-
ported only by a jack. If it is necessary to
work under the vehicle, support it with
safety stands.
● Keep smoking materials, flame and sparks
away from fuel tank and the battery.
● Your vehicle is equipped with an automatic
engine cooling fan. It may come on at any
time without warning, even if the ignition
key is in the OFF position and the engine is
not running. To avoid injury, always discon-
nect the negative battery cable before work-
ing near the fan.
● The fuel filter or fuel lines should be serviced
by an INFINITI retailer because the fuel lines
are under high pressure even when the en-
gine is off. CAUTION● Do not work under the hood while the engine
is hot. Turn the engine off and wait until it
cools down.
● Avoid direct contact with used engine oil and
coolant. Improperly disposed engine oil,
coolant, and/or other vehicle fluids can dam-
age the environment. Always conform to lo-
cal regulations for disposal of vehicle fluid.
This “8. Maintenance and do-it-yourself” sec-
tion gives instructions regarding only those
items which are relatively easy for an owner to
perform.
A genuine INFINITI Service Manual is also avail-
able. (See “OWNER’S MANUAL/SERVICE
MANUAL ORDER INFORMATION” in the “9. Tech-
nical and consumer information” section.)
You should be aware that incomplete or im-
proper servicing may result in operating diffi-
culties or excessive emissions, and could affect
your warranty coverage. If in doubt about any
servicing, we recommend that it be done by an
INFINITI retailer.MAINTENANCE PRECAUTIONS
Maintenance and do-it-yourself
8-5
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VQ37VHR ENGINE 1. Fuse/fusible link holder
2. Battery
3. Engine oil filler cap
4. Brake fluid reservoir 5. Clutch fluid reservoir (Manual Transmis-
sion models)
6. Window washer fluid reservoir
7. Power steering fluid reservoir
8. Air cleaner 9. Radiator filler cap
10. Drive belts
11. Engine coolant reservoir
12. Engine oil dipstick
SSI0345ENGINE COMPARTMENT CHECK
LOCATIONS
8-6 Maintenance and do-it-yourself
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(168,000 km) or 7 years. Mixing any other type
of coolant or the use of non-distilled water will
reduce the life expectancy of the factory-fill
coolant. Refer to the INFINITI Service and Main-
tenance Guide for more details.
If the cooling system requires coolant fre-
quently, have it checked by an INFINITI retailer.
CHANGING ENGINE COOLANT Major cooling system repairs should be per-
formed by an INFINITI retailer. The service pro-
cedures can be found in the appropriate INFINITI
Service Manual.
Improper servicing can result in reduced heater
performance and engine overheating.
WARNING● To avoid the danger of being scalded, never
change the coolant when the engine is hot.
● Never remove the radiator cap when the en-
gine is hot. Serious burns could be caused by
high pressure fluid escaping from the
radiator.
● Avoid direct skin contact with used coolant.
If skin contact is made, wash thoroughly
with soap or hand cleaner as soon as
possible. ● Keep coolant out of reach of children and
pets.
Engine coolant must be disposed of properly.
Check your local regulations.
CHECKING ENGINE OIL LEVEL 1. Park the vehicle on a level surface and
apply the parking brake.
2. Run the engine until it reaches operating
temperature.
3. Turn off the engine. Wait more than 15
minutes for the oil to drain back into the oil
pan.
4. Remove the dipstick and wipe it clean.
Reinsert it all the way.
5. Remove the dipstick again and check the
oil level. It should be within the range
 1
.
If the oil level is below
 2
, remove the oil
filler cap and pour recommended oil
through the opening. Do not overfill
 3
. SDI2045
ENGINE OIL
8-8 Maintenance and do-it-yourself
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6. Recheck oil level with the dipstick.
It is normal to add some oil between oil mainte-
nance intervals or during the break-in period,
depending on the severity of operating condi-
tions.
CAUTIONOil level should be checked regularly. Operat-
ing the engine with an insufficient amount of oil
can damage the engine, and such damage is
not covered by warranty.
CHANGING ENGINE OIL AND FILTER
Vehicle set-up 1. Park the vehicle on a level surface and
apply the parking brake.
2. Run the engine until it reaches operating
temperature.
3. Turn the engine off and wait more than 15
minutes.
4. Raise and support the vehicle using a
suitable floor jack and safety jack stands.
● Place the safety jack stands under the
vehicle jack-up points.
● A suitable adapter should be attached to
the jack stand saddle. 5. Remove the plastic engine undercover.
a. Remove the small plastic clip at the center
point of the undercover.
b. Then remove the other bolts that hold the
undercover in place.
CAUTIONMake sure the correct lifting and support
points are used to avoid vehicle damage.
Engine oil and filter 1. Place a large drain pan under the drain
plug.
2. Remove the oil filler cap.
3. Remove the drain plug
 1
with a wrench
and completely drain the oil.
CAUTIONBe careful not to burn yourself, as the engine oil
is hot. Two-wheel drive (2WD) models SDI2335
Maintenance and do-it-yourself
8-9
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