check engine INFINITI Q70 2014 Service Manual

Black plate (413,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
Y51D-V-E01-63E297C5-4018-4F40-92EF-3B211665C34BTo shut off the engine in an emergency
situation while driving, perform the follow-
ing procedure:
.Rapidly push the push-button ignition
switch 3 consecutive times in less than
1.5 seconds, or
. Push and hold the push-button ignition
switch for more than 2 seconds.Y51D-V-E01-6C3D919A-CD26-4BC0-9CF9-2EC5F910E687
TIRE PRESSURE MONITORING SYS-
TEM (TPMS)
Y51D-V-E01-BFEA3614-E51F-4536-91BF-65C5324E7C3EThis 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 appears in the dot
matrix liquid crystal display, one or more
of your tires is significantly under-inflated.
If the vehicle is being driven with low tire
pressure, the TPMS will activate and warn
you of it by the low tire pressure warning
light. This system will activate only when
the vehicle is driven at speeds above 16
MPH (25 km/h). For more details, see
“Warning/indicator lights and audible re-
minders” (P.2-10) and “Tire Pressure Mon-
itoring System (TPMS)” (P.5-4).
WARNING
.If the low tire pressure warning light
illuminates or LOW PRESSURE informa-
tion is displayed on the monitor screen
while driving, avoid sudden steering
maneuvers or abrupt braking, reduce
vehicle speed, pull off the road to a safe
location and stop the vehicle as soon as possible. Driving with under-inflated
tires may permanently damage the tires
and increase the likelihood of tire fail-
ure. Serious vehicle damage could occur
and may lead to an accident and could
result in serious personal injury. Check
the tire pressure for all four tires. Adjust
the tire pressure to the recommended
COLD tire pressure shown on the Tire
and Loading Information label to turn
the low tire pressure warning light OFF. If
the light still illuminates while driving
after adjusting the tire pressure, a tire
may be flat. If you have a flat tire,
replace it with a spare tire as soon as
possible.
. 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.
Contact your INFINITI retailer as soon as
possible for tire replacement and/or
system resetting.
. Replacing tires with those not originally
specified by INFINITI could affect the
proper operation of the TPMS.
. Do not inject any tire liquid or aerosol
tire sealant into the tires, as this may
In case of emergency6-3
EMERGENCY ENGINE SHUT OFF FLAT TIRE
Condition:

Black plate (422,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
6-12In case of emergency
Y51D-V-E01-9ECDEC9C-D91E-43BE-8956-65EFDD4A98EF
CAUTION
.Do not continue to drive if your vehicle
overheats. Doing so could cause engine
damage or a vehicle fire.
. To avoid the danger of being scalded,
never remove the radiator cap while the
engine is still hot. When the radiator cap
is removed, pressurized hot water will
spurt out, possibly causing serious
injury.
. Do not open the hood if steam is coming
out.
If your vehicle is overheating (indicated by
an extremely high temperature gauge
reading), or if you feel a lack of engine
power, detect abnormal noise, etc., take
the following steps:
1. Move the vehicle safely off the road,
apply the parking brake and move the
shift lever to the P (Park) position.
Do not stop the engine.
2. Turn off the climate control. Open all the windows, move the heater or air
conditioner temperature control to
maximum hot and fan control to high speed.
3. If engine overheating is caused by
climbing a long hill on a hot day, run
the engine at a fast idle (approximately
1,500 rpm) until the temperature gauge
indication returns to normal.
4. Get out of the vehicle. Look and listen for steam or coolant escaping from the
radiator before opening the hood. (If
steam or coolant is escaping, turn off
the engine.) Do not open the hood
further until no steam or coolant can be
seen.
5. Open the engine hood.WARNING
If steam or water is coming from the engine,
stand clear to prevent getting burned.
6. Visually check drive belts for damage or looseness. Also check if the cooling fan
is running. The radiator hoses and
radiator should not leak water. If cool-
ant is leaking or the cooling fan does
not run, stop the engine.
WARNING
Be careful not to allow your hands, hair,
jewelry or clothing to come into contact
with, or get caught in, engine belts or the
engine cooling fan. The engine cooling fan
can start at any time.
7. After the engine cools down, check thecoolant level in the reservoir tank with
the engine running. Add coolant to the
reservoir tank if necessary. Have your
vehicle repaired at the nearest INFINITI
retailer.
IF YOUR VEHICLE OVERHEATS
Condition:

Black plate (439,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
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 ...
................... 8-7
VK56VD engine ...
............................................... 8-7
VQ37VHR engine ...
............................................. 8-9
Engine cooling system ...
....................................... 8-12
Checking engine coolant level ...
....................... 8-13
Changing engine coolant ...
............................... 8-14
Engine oil ...
.......................................................... 8-14
Checking engine oil level ...
............................... 8-15
Changing engine oil and filter ...
....................... 8-15
Automatic transmission fluid ...
............................. 8-18
Power steering fluid ...
........................................... 8-18
Brake fluid ...
......................................................... 8-19
Brake fluid ...
.................................................... 8-19
Window washer fluid ...
......................................... 8-19
Battery ...
.............................................................. 8-20
Jump starting ...
................................................ 8-22
Variable voltage control system ...
......................... 8-22 Drive belts
...
........................................................ 8-22
Spark plugs ...
...................................................... 8-23
Replacing spark plugs ...
................................. 8-23
Air cleaner ...
........................................................ 8-24
Windshield wiper blades ...
................................... 8-25
Cleaning ...
...................................................... 8-25
Replacing ...
..................................................... 8-26
Brakes ...
.............................................................. 8-27
Self-adjusting brakes ...
................................... 8-27
Brake pad wear warning ...
.............................. 8-27
Fuses ...
................................................................ 8-28
Engine compartment ...
.................................... 8-28
Passenger compartment ...
............................... 8-29
Intelligent Key battery replacement ...
................... 8-30
Lights ...
................................................................ 8-33
Headlights ...
................................................... 8-33
Exterior and interior lights ...
........................... 8-34
Wheels and tires ...
............................................... 8-36
Tire pressure ...
............................................... 8-36
Tire labeling ...
................................................ 8-40
Types of tires ...
............................................... 8-42
Tire chains ...
................................................... 8-43
Changing wheels and tires ...
........................... 8-43
Condition:

Black plate (440,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
8-2Maintenance and do-it-yourself
Y51D-V-E01-99388A75-FA9F-4C12-87AA-7212C765E30CSome day-to-day and regular maintenance
is essential to maintain your vehicle’s good
mechanical condition, as well as its emis-
sion and engine performance.
It is the owner’s responsibility to make
sure that the scheduled maintenance, as
well as general maintenance, is performed.
As the vehicle owner, you are the only one
who can ensure that your vehicle receives
the proper maintenance. You are a vital link
in the maintenance chain.
SCHEDULED MAINTENANCEY51D-V-E01-4AB86854-3F44-433C-8B66-59A89D3B0CB5For your convenience, both required and
optional scheduled maintenance items are
described and listed in your“INFINITI
Service and Maintenance Guide”. You must
refer to that guide to ensure that necessary
maintenance is performed on your vehicle
at regular intervals.
GENERAL MAINTENANCEY51D-V-E01-9C899EFE-CF7B-44F1-9A3D-78EF760B05BDGeneral maintenance includes those items
which should be checked during normal
day-to-day operation. They are essential for
proper vehicle operation. It is your respon-
sibility to perform these procedures reg-
ularly as prescribed.
Performing general maintenance checks requires minimal mechanical skill and only
a few general automotive tools.
These checks or inspections can be done
by yourself, a qualified technician or, if you
prefer, an INFINITI retailer.
WHERE TO GO FOR SERVICEY51D-V-E01-340061AC-7165-4FC2-8430-EDF309D4BC76If maintenance service is required or your
vehicle appears to malfunction, have the
systems checked and serviced by an
INFINITI retailer.
INFINITI technicians are well-trained spe-
cialists and are kept up to date with the
latest service information through techni-
cal bulletins, service tips, and in-retailer-
ship information systems. They are
completely qualified to work on INFINITI
vehicles
beforework begins.
You can be confident that an INFINITI
retailer’s service department performs the
best job to meet the maintenance require-
ments on your vehicle.
Y51D-V-E01-1FE91147-D03A-454F-8CE2-41718682DE9EDuring the normal day-to-day operation of
the vehicle, general maintenance should
be performed regularly as prescribed in
this section. If you detect any unusual
sounds, vibrations or smell, be sure to
check for the cause or have an INFINITI
retailer do it promptly. In addition, you
should notify an INFINITI retailer if you
think that repairs are required.
When performing any checks or mainte-
nance work, see “Maintenance precau-
tions” (P.8-5).
EXPLANATION OF MAINTENANCE
ITEMS
Y51D-V-E01-5D199709-98C9-4BBF-9981-544316382EC9Additional information on the following
items with “*”is found later in this
section.
Outside the vehicleY51D-V-E01-054C55AE-9835-4A7F-8D15-ADE2A8AF882DThe maintenance items listed here should
be performed from time to time, unless
otherwise specified.
Doors and engine hood: Check that all
doors and the engine hood, operate
properly. Also ensure that all latches lock
securely. Lubricate hinges, latches, latch
pins, rollers and links if necessary. Make
sure that the secondary latch keeps the
hood from opening when the primary latch
MAINTENANCE REQUIREMENT GENERAL MAINTENANCE
Condition:

Black plate (442,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
8-4Maintenance and do-it-yourself
securely. Check the belt webbing 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 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
steering 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
properly.
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 vehicleY51D-V-E01-B3361551-A047-4A72-ACCF-65F901F88160The 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 tempera-
tures or under severe condition require
frequent checks of the battery fluid level.
NOTE:
Care should be taken to avoid situations
that can lead to potential battery dis-
charge and potential no-start conditions
such as:
1. Installation or extended use of electro-
nic accessories that consume battery
power when the engine is not running
(Phone chargers, GPS, DVD players,
etc.)
2. Vehicle is not driven regularly and/or
only driven short distances.
In these cases, the battery may need to be
charged to maintain battery health.
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, im-
mediately have the exhaust system in-
spected by an INFINITI retailer. (See
“Precautions when starting and driving”
(P.5-3) 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 corrected 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.
Condition:

Black plate (443,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
Underbody:The underbody is frequently
exposed to corrosive substances such as
those used on icy roads or to control dust.
It is very important to remove these
substances, otherwise rust will form on
the floor pan, frame, fuel lines and around
the exhaust system. At the end of winter,
the underbody should be thoroughly
flushed with plain water, being careful to
clean those areas where mud and dirt may
accumulate. For additional information,
see “Cleaning exterior” (P.7-2).
Windshield washer fluid*: Check that there
is adequate fluid in the reservoir.
Y51D-V-E01-239C92D7-82C6-4E8E-B4CA-4F36484B9DCBWhen performing any inspection or main-
tenance 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. Move the shift 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 ignition switch is in the ON position.
. Never leave the engine or automatic
transmission related component har-
nesses disconnected 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
supported 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 auto-
matic 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 disconnect the negative
battery cable before working near the
fan.
. The fuel filter or fuel lines should be
serviced by an INFINITI retailer because
the fuel lines are under high pressure
Maintenance and do-it-yourself8-5
MAINTENANCE PRECAUTIONS
Condition:

Black plate (445,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
Y51D-V-E01-40355A41-7F10-4734-AE5E-6CAA3DAE4D37
SDI2569
VK56VD ENGINEY51D-V-E01-E9D8FF24-AD48-40B9-8D74-62D279278F91To remove the engine compartment cover,
unhook the clips
*1located as illustrated.
Loosen the bolts
*Aand then pull the
cover upward.
Maintenance and do-it-yourself8-7
ENGINE COMPARTMENT CHECK LOCATIONS
Condition:

Black plate (451,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
SDI2043
CHECKING ENGINE COOLANT LEVELY51D-V-E01-84AE9FA6-E55B-4D94-91B9-C765423765DC
Type AGUID-ADA6E49A-21E7-4E48-8999-4B103F566062Check the coolant levelin the reservoir
when the engine is cold. If the coolant
level is below MIN
*2, open the reservoir
tank cap and add coolant up to the MAX
*1
level. If the reservoir tank is empty, check
the coolant level in the radiator when the
engine is cold. If there is insufficient
coolant in the radiator, fill the radiator
with coolant up to the filler opening and
also add it to the reservoir tank up to the
MAX level
*1.
Tighten the cap securely after adding engine coolant.
If the cooling system requires coolant
frequently, have it checked by an INFINITI
retailer.
SDI2624
Type BGUID-341ED9AB-6462-4E58-94AF-F9670CA91ED2Check the coolant level in the reservoir
tank when the engine is running and after
it reaches normal operating temperature. If
the coolant level is below MIN level
*2,
add coolant up to the MAX level
*1. If the
reservoir tank is empty, check the coolant
level in the radiator when the engine is
cold . If there is insufficient coolant in the
radiator, fill the radiator with coolant up to
the filler cap above the radiator upper hose
opening and also add it to the reservoir
tank up to the MAX level
*1. Put on the
filler cap above the radiator upper hose
and with the reservoir cap open, start the
Maintenance and do-it-yourself8-13
Condition:

Black plate (452,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
8-14Maintenance and do-it-yourself
engine. Run the engine until it reaches
normal operating temperature. Add coolant
up to the MAX level
*1. Tighten the cap
securely after adding engine coolant.
If the cooling system requires coolant
frequently, have it checked by an INFINITI
retailer.
CHANGING ENGINE COOLANTY51D-V-E01-A426F257-7E1C-4FDD-BCE7-CC70502D59EAMajor cooling system repairs should be
performed by an INFINITI retailer. The
service procedures can be found in the
appropriate INFINITI Service Manual.
Improper servicing can result in reduced
heater performance and engine overheat-
ing.
WARNING
. To avoid the danger of being scalded,
never change the coolant when the
engine is hot.
. Never remove the radiator cap when the
engine 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.
Y51D-V-E01-A7C453B1-918A-4063-9B01-B06D637810DF
SDI2541
VK56VD engine
SDI2045
VQ37VHR engine
ENGINE OIL
Condition:

Black plate (453,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
CHECKING ENGINE OIL LEVELY51D-V-E01-F1375A53-9C95-4044-9249-810C01D32BB11. Park the vehicle on a level surface andapply the parking brake.
2. Run the engine until it reaches operat- ing 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.
6. Recheck oil level with the dipstick.
It is normal to add some oil between oil
maintenance intervals or during the break-
in period, depending on the severity of
operating conditions.
CAUTION
Oil level should be checked regularly.
Operating the engine with an insufficient
amount of oil can damage the engine, and such damage is not covered by warranty.
CHANGING ENGINE OIL AND FILTERY51D-V-E01-9647A2B0-4907-4EB7-83BB-101487A3007A
Vehicle set-upY51D-V-E01-A77DD255-330F-4511-9453-9FE2A63539431. Park the vehicle on a level surface and
apply the parking brake.
2. Run the engine until it reaches operat- ing 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 at-tached to the jack stand saddle.
5. Remove the plastic engine undercover.
.Remove the small plastic clip at the center point of the undercover.
.Then remove the other bolts thathold the undercover in place.
CAUTION
Make sure the correct lifting and support
points are used to avoid vehicle damage.
Maintenance and do-it-yourself8-15
Condition: