2014 INFINITI Q70 check engine

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:

Black plate (454,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
8-16Maintenance and do-it-yourself
SDI2543
VK56VD engine—2WD models
SDI2335
VQ37VHR engine —2WD models
SDI2320
VK56VD engine —AWD models
SDI2047
VQ37VHR engine —AWD models
Engine oil and filterY51D-V-E01-E1C6F53B-E6EA-4EFF-A78E-74F5B4A219BD1. Place a large drain pan under the drain
plug.
2. Remove the oil filler cap.
3. Remove the drain plug
*1with a
wrench and completely drain the oil.
CAUTION
Be careful not to burn yourself, as the
engine oil is hot.
.Waste oil must be disposed of
properly.
.Check your local regulations.
4. (Perform steps 4 to 7 only when the engine oil filter change is needed.)
Loosen the oil filter
*2with an oil filter
wrench. Remove the oil filter by turning
it by hand.
5. Wipe the engine oil filter mounting
surface with a clean rag.
CAUTION
Be sure to remove any old rubber gasket
remaining on the mounting surface of the
Condition:

Black plate (455,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
engine. Failure to do so could lead to engine
damage.
6. Coat the gasket on the new filter withclean engine oil.
7. Screw in the oil filter clockwise until a slight resistance is felt, then tighten
additionally more than 2/3 turn.
Oil filter tightening torque:11 to 15 ft-lb
(14.7 to 20.5 N·m)
8. Clean and re-install the drain plug with a new washer. Securely tighten the
drain plug with a wrench.
Drain plug tightening torque:22 to 29 ft-lb
(29 to 39 N·m)
Do not use excessive force.
9. Refill engine with recommended oil and install the oil filler cap securely.
CAUTION
The dipstick must be inserted in place to
prevent oil spillage from the dipstick hole
while filling the engine with oil.
See “Capacities and recommended fuel/lubricants”
(P.9-2) for drain and
refill capacity. The drain and refill
capacity depends on the oil tempera-
ture and drain time. Use these specifi-
cations for reference only. Always use
the dipstick to determine the proper
amount of oil in the engine.
10. Start the engine and check for leakage around the drain plug and the oil filter.
Correct as required.
11. Turn the engine off and wait more than 15 minutes. Check the oil level with the
dipstick. Add engine oil if necessary.
After the operationY51D-V-E01-790CC92C-2688-443C-80B6-74DD163C016F1.Install the engine undercover into
position as the following steps.
a. Pull the center of the small plastic
clip out.
b. Hold the engine undercover into position.
c. Insert the clip through the under- cover into the hole in the frame, then
push the center of the clip in to lock
the clip in place.
d. Install the other bolts that hold the undercover in place. Be careful not
to strip the bolts or over-tighten them.
2. Lower the vehicle carefully to the
ground.
3. Dispose of waste oil and filter properly.
WARNING
. Prolonged and repeated contact with
used engine oil may cause skin cancer.
. Try to avoid direct skin contact with used
oil. If skin contact is made, wash
thoroughly with soap or hand cleaner
as soon as possible.
. Keep used engine oil out of reach of
children.
Maintenance and do-it-yourself8-17
Condition:

Black plate (461,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
1. Power steering fluid pump
2. Alternator
3. Crankshaft pulley
4. Air conditioner compressor
5. Drive belt auto-tensioner
WARNING
Be sure the ignition switch is in the OFF or
LOCK position before servicing drive belts.
The engine could rotate unexpectedly.
1. Visually inspect each belt for signs ofunusual wear, cuts, fraying or loosen-
ess. If the belt is in poor condition or
loose, have it replaced or adjusted by
an INFINITI retailer.
2. Have the belts checked regularly for condition and tension in accordance
with the maintenance schedule in your
“INFINITI Service and Maintenance
Guide”.
Y51D-V-E01-BAFEF7A1-AE7C-43AA-A355-1FA8A7A79074
WARNING
Be sure the engine and the ignition switch
are off and that the parking brake is
engaged securely.
CAUTION
Be sure to use the correct socket to remove
the spark plugs. An incorrect socket can
damage the spark plugs.
SDI2020
REPLACING SPARK PLUGSY51D-V-E01-5A1D3AA1-EC43-4BAE-B27E-C6EBBD832A65If replacement is required, see an INFINITI
retailer for servicing.
Iridium-tipped spark plugsY51D-V-E01-38C2D7CB-E5A3-44D4-8FFC-4A1A5D208F6CIt is not necessary to replace the iridium-
tipped spark plugs as frequently as the
conventional type spark plugs since they
will last much longer. Follow the main-
tenance schedule in “INFINITI Service and
Maintenance Guide”, but do not reuse
them by cleaning or regapping.
Maintenance and do-it-yourself8-23
SPARK PLUGS
Condition:

Black plate (466,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
8-28Maintenance and do-it-yourself
Y51D-V-E01-29097B28-1FE0-4182-A485-A2047D0C5A2D
SDI2584
SDI2566
ENGINE COMPARTMENTY51D-V-E01-AFE79579-EF18-4DDE-B356-BDC18538EFB0
CAUTION
Never use a fuse of a higher or lower
amperage rating than that 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 is pushed tothe OFF or LOCK position and the
headlight switch is turned to OFF.
2. Open the engine hood and remove the cover on the battery and the fuse/
fusible link holder.
3. Remove the fuse/fusible link holder
cover.
4. Remove the fuse with the fuse puller.
SDI1754
5. If the fuse is open*A, replace it with a
new fuse
*B. Spare fuses are stored in
the passenger compartment fuse box.
6. If a new fuse also opens, have the electrical system checked and repaired
by an INFINITI retailer.
The holder
*1also contains the fuses. For
checking and/or replacing, see an INFINITI
retailer.
Fusible linksY51D-V-E01-3E721E86-CD62-4D57-8D17-0637DAF969EFIf any electrical equipment does not
operate and fuses are in good condition,
check the fusible links. If any of these
fusible links are melted, replace only with
FUSES
Condition:

Black plate (492,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
9-6Technical and consumer information
above symptoms are encountered, have
your vehicle checked at an INFINITI retailer
or other competent service facility.
However, now and then you may notice
light spark knock for a short time while
accelerating or driving up hills. This is no
cause for concern, because you get the
greatest fuel benefit when there is light
spark knock for a short time under heavy
engine load.
JVT0159X
1.API certification mark
2.API service symbol
ENGINE OIL AND OIL FILTER RE-
COMMENDATION
Y51D-V-E01-D3E5E26B-FC22-4D68-908C-7DA80DA562C9
Selecting the correct oilY51D-V-E01-7FE27830-3B20-44C8-B50F-C4B29604F170It is essential to choose the correct grade,
quality, and viscosity engine oil to ensure
satisfactory engine life and performance,
see“Capacities and recommended fuel/
lubricants” (P.9-2). INFINITI recommends
the use of an energy conserving oil in
order to improve fuel economy.
Select only engine oils that meet the American Petroleum Institute (API) certifi-
cation or International Lubricant Standar-
dization and Approval Committee (ILSAC)
certification and SAE viscosity standard.
These oils have the API certification mark
on the front of the container. Oils which do
not have the specified quality label should
not be used as they could cause engine
damage.
Oil additivesY51D-V-E01-66B343FB-CACE-4D63-BB72-E04A44C2B684INFINITI does not recommend the use of oil
additives. The use of an oil additive is not
necessary when the proper oil type is used
and maintenance intervals are followed.
Condition:

Black plate (508,1)
[ Edit: 2013/ 10/ 21 Model: Y51-D ]
9-22Technical and consumer information
online at:
https://wwwapps.tc.gc.ca/Saf-Sec-
Sur/7/PCDB-BDPP/Index.aspx.
Additional information concerning
motor vehicle safety may be obtained
from Transport Canada’s Road Safety
Information Centre at 1-800- 333-
0371 or online at www.tc.gc.ca/
roadsafety (English speakers) or
www.tc.gc.ca/securiteroutiere
(French speakers).
To notify INFINITI of any safety con-
cerns please contact our Consumer
Information Centre toll free at 1-800-
361-4792.
Y51D-V-E01-1566689B-E555-4824-98F9-8466E02C8EE3A vehicle equipped with Intelligent All-
Wheel Drive (AWD) should never be tested
using a two wheel dynamometer (such as
the dynamometers used by some states for
emissions testing), or similar equipment.
Make sure you inform test facility person-
nel that your vehicle is equipped with AWD
before it is placed on a dynamometer.
Using the wrong test equipment may result
in transmission damage or unexpected
vehicle movement which could result in
serious vehicle damage or personal injury.
Due to legal requirements in some states/
areas, your vehicle may be required to be
in what is called the“ready condition”for
an Inspection/Maintenance (I/M) test of
the emission control system.
The vehicle is set to the “ready condition”
when it is driven through certain driving
patterns. Usually, the “ready condition”
can be obtained by ordinary usage of the
vehicle.
If a powertrain system component is
repaired or the battery is disconnected,
the vehicle may be reset to a “not ready
condition”. Before taking the I/M test,
check the vehicle’s inspection/mainte-
nance test readiness condition. Place the
ignition switch in the ON position without starting the engine. If the Malfunction
Indicator Light (MIL) comes on steady for
20 seconds and then blinks for 10
seconds, the I/M test condition is
“not
ready”. If the MIL does not blink after 20
seconds, the I/M test condition is “ready”.
Contact an INFINITI retailer to set the
“ready condition” or to prepare the vehicle
for testing.
READINESS FOR INSPECTION/
MAINTENANCE (I/M) TEST (US only)
Condition: