check engine INFINITI Q70 2019 Repair Manual

10-8Technical and consumer information
that can be harmful to the fuel system and
engine.
Octane rating tips
Using unleaded gasoline with an octane
rating lower than recommended above can
cause persistent, heavy spark knock. (Spark
knock is a metallic rapping noise.) If severe,
this can lead to engine damage. If you
detect a persistent heavy spark knock even
when using gasoline of the stated octane
rating, or if you hear steady spark knock
while holding a steady speed on level roads,
it is recommended you have an INFINITI
retailer correct the condition. Failure to
correct the condition is misuse of the
vehicle, for which INFINITI is not respon-
sible.
Incorrect ignition timing will result in knock-
ing, after-run or overheating. This in turn
may cause excessive fuel consumption or
damage to the engine. If any of the above
symptoms are encountered, have your ve-
hicle checked. It is recommended you visit an
INFINITI retailer for this service 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 heavyengine load.

A 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 personnel
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 re-
paired or the battery is disconnected, the
vehicle may be reset to a “not ready condi-
tion”. Before taking the I/M test, check the
vehicle’s inspection/maintenance test readi-
ness 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 after20 seconds, the I/M test condition is
“ready”.
It is recommended you visit an INFINITI
retailer to set the “ready condition” or to
prepare the vehicle for testing.
This vehicle is equipped with an Event Data
Recorder (EDR). The main purpose of an
EDR is to record, in certain crash or near
crash-like situations, such as an air bag
deployment or hitting a road obstacle, data
that will assist in understanding how a
vehicle’s systems performed. The EDR is
designed to record data related to vehicle
dynamics and safety systems for a short
period of time, typically 30 seconds or less.
The EDR in this vehicle is designed to record
such data as:
.
How various systems in your vehicle were
operating;
. Whether or not the driver and passenger
safety belts were buckled/fastened;
. How far (if at all) the driver was depres-
sing the accelerator and/or brake pedal;
and,
. How fast the vehicle was traveling.
. Sounds are not recorded.
These data can help provide a better under-
standing of the circumstances in which
crashes and injuries occur.
NOTE: EDR data are recorded by your
vehicle only if a nontrivial crash situation
occurs; no data are recorded by the EDR
under normal driving conditions and no
personal data (e.g. name, gender, age and
crash location) are recorded. However, other
parties, such as law enforcement, could
combine the EDR data with the type of
Technical and consumer information10-25
READINESS FOR INSPECTION/
MAINTENANCE (I/M) TEST (US only)EVENT DATA RECORDERS (EDR)

11 Index
A
ABS (Anti-lock Braking System) ................... 5-122
Active noise cancellation ................................. 5-128
Air bag systemFront-seat mounted side-impact
supplemental air bag system ..................... 1-49
Roof-mounted curtain side-impact and
rollover supplemental air bag system ...... 1-49
Air bag warning labels ........................................ 1-51
Air bag warning light ............................... 1-52, 2-16
Air cleaner housing filter ................................... 8-19
Air conditioner
Air conditioner specification label ......... 10-16
Air conditioning system refrigerant and
lubricant recommendations ..................... 10-10
Automatic climate control .......................... 4-32
Alarm
How to stop alarm (see vehicle
security system) ............................................ 2-30
Alcohol, drugs and driving ................................... 5-9
Antenna .................................................................. 4-38
Anti-lock Braking System (ABS) ................... 5-122
Appearance care
Exterior appearance care ............................... 7-2
Interior appearance care ............................... 7-4
Armrest ...................................................................... 1-4
Around View
®Monitor ...................................... 4-10
Ashtrays ................................................................. 2-45
Audible reminders ................................................ 2-19 Auto closure .......................................................... 3-20
Autolight system .................................................. 2-35
Automatic
Automatic climate control ......................... 4-34
Automatic Transmission Fluid (ATF) ....... 8-13
Climate control ............................................... 4-32
Driving with automatic transmission ....... 5-15
Automatic door locks ............................................ 3-6
Automatic drive positioner ............................... 3-28
Automatic seat positioner ................................ 3-28
Average fuel consumption and speed ........... 2-27
Avoiding collision and rollover ............................ 5-7
B
Back-up Collision Intervention (BCI) .............. 5-54
Battery .................................................................... 8-16
Battery replacement, Intelligent Key ......... 3-2
Battery saver system .................................... 2-36
Intelligent Key ................................................. 8-25
Variable voltage control system ............... 8-18
Before starting the engine ................................ 5-13
Belts (See drive belts) ......................................... 8-18
Blind Spot Intervention
®(BSI) ......................... 5-41
Blind Spot Intervention (BSI) ON
indicator light ......................................................... 2-17
Blind Spot Warning (BSW) ............................... 5-32
Brake
Anti-lock Braking System (ABS) ............. 5-122
Brake fluid ....................................................... 8-14 Brake force distribution ............................ 5-124
Brake system ................................................ 5-121
Parking brake operation .............................. 5-19
Brake warning light ............................................. 2-12
Break-in schedule .............................................. 5-116
Bulb check/instrument panel ............................ 2-11
Bulb replacement ................................................. 8-27
C
Camera aiding sonar function ......................... 4-23
Capacities and
recommended fluids/lubricants ....................... 10-2
Car phone or CB radio ....................................... 4-38
Card holder ............................................................ 2-49
Catalytic converter Three way catalyst .......................................... 5-5
Chassis and body maintenance ....................... 9-10
Check tire pressure warning ............................. 2-23
Child restraints ...................................................... 1-19 LATCH system ............................................... 1-21
Precautions on child restraints .................. 1-19
Child safety ............................................................ 1-17
Child safety rear door lock .................................. 3-6
Chimes Audible reminders .......................................... 2-19
Seat belt warning light and chime ............ 2-15
Circuit breaker Fusible link ...................................................... 8-24
Cleaning exterior and interior ................... 7-2, 7-4

11-2
Climate controlAutomatic climate control .......................... 4-32
Clock ........................................................................\
2-45
Coat hooks ............................................................ 2-50
Cockpit ...................................................................... 2-3
Cold weather driving ........................................ 5-126
Compact spare tire ............................................ 8-40
Console box ........................................................... 2-49
Coolant Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine coolant ............................ 8-10
Checking engine coolant level ...................... 8-9
Corrosion protection ............................................. 7-7
Cruise control ....................................................... 5-65 Fixed speed cruise control (on
ICC system) ..................................................... 5-85
Intelligent Cruise Control (ICC) ................. 5-67
Cruise indicator .................................................... 2-24
Cup holders ........................................................... 2-47
Current fuel consumption ................................. 2-27
D
Daytime running light system .......................... 2-36
Defroster switch
Rear window and outside mirror
defroster switch ............................................. 2-34
Dimensions .......................................................... 10-13
Distance Control Assist (DCA) ........................ 5-88
Distance Control Assist (DCA) system
switch indicator .................................................... 2-24 Distance Control Assist (DCA) system
warning light ......................................................... 2-13
Distance to empty ............................................... 2-27
Drive belts .............................................................. 8-18
Drive positioner .................................................... 3-28
Driving
Cold weather driving .................................. 5-126
Driving with automatic transmission ....... 5-15
Precautions when starting and driving ..... 5-4
E
ECO drive indicator light .................................... 2-17
ECO mode ............................................................. 5-21
ECO pedal system ............................................... 5-21
Economy
Fuel .................................................................. 5-117
Elapsed time ......................................................... 2-27
Elapsed time and trip odometer ..................... 2-27
Emission control information label ............... 10-16
Emission control system maintenance ............ 9-8
Emission control system warranty .............. 10-23
Engine Before starting the engine .......................... 5-13
Break-in schedule ........................................ 5-116
Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine coolant ............................ 8-10
Changing engine oil and filter .................... 8-11
Checking engine coolant level ...................... 8-9
Checking engine oil level ............................. 8-11
Coolant temperature gauge ......................... 2-8 Emergency engine shut off ......................... 5-12
Engine block heater .................................... 5-127
Engine compartment check locations ........ 8-3
Engine cooling system ................................... 8-8
Engine oil ........................................................ 8-10
Engine oil and oil
filter recommendation .................................. 10-9
Engine oil replacement indicator ............... 2-25
Engine oil viscosity ........................................ 10-9
Engine serial number ................................. 10-15
Engine specifications .................................. 10-11
Engine start operation indicator ............... 2-22
If your vehicle overheats ............................. 6-12
Starting the engine ....................................... 5-14
Engine coolant temperature gauge .................. 2-8
Entry/exit function
Automatic drive positioner ......................... 3-28
Event Data Recorders (EDR) ........................ 10-25
Exhaust gas (carbon monoxide) ........................ 5-4
Explanation of scheduled
maintenance items ................................................. 9-5
F
F.M.V.S.S./C.M.V.S.S. certification label .... 10-15
Filter Air cleaner housing filter ............................. 8-19
Changing engine oil and filter .................... 8-11
Flashers (See hazard warning
flasher switch) ......................................................... 6-2
Flat tire ...................................................................... 6-3
Flat towing ......................................................... 10-22

Standard maintenance .................................... 9-7
Under the hood and vehicle ......................... 9-4
Malfunction indicator light (MIL) .................... 2-18
Map lights .............................................................. 2-57
Master warning light .......................................... 2-15
Mechanical key (Intelligent Key system) .......... 3-3
Memory function ................................................. 3-30
Memory storage Automatic drive positioner ......................... 3-29
Meter
Trip computer ................................................. 2-27
Meters and gauges ................................................ 2-6 Instrument brightness control ................... 2-38
Mirror Inside mirror .................................................... 3-25
Outside mirrors .............................................. 3-26
Vanity mirror ................................................... 3-28
Monitor Around View
®Monitor ............................... 4-10
RearView monitor ........................................... 4-3
Moonroof ............................................................... 2-54
Moving Object Detection (MOD) ................... 4-27
N
New vehicle break-in ........................................ 5-116
O
Odometer .................................................................. 2-7
Off-road recovery ................................................. 5-8 Oil
Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine oil and filter .................... 8-11
Checking engine oil level ............................. 8-11
Engine oil ........................................................ 8-10
Engine oil viscosity ........................................ 10-9
Oil filter replacement indicator .................. 2-25
Operation Indicators for operation ............................... 2-22
Outside mirrors .................................................... 3-26
Overheat, If your vehicle overheats ............... 6-12
Owner’s Manual/Service Manual
order information ............................................. 10-26
P
Panic alarm ............................................................ 3-15
Parking Parking brake operation .............................. 5-19
Parking on hills ............................................. 5-119
Parking brake break-in .................................... 5-121
Personal lights ...................................................... 2-57
Phone Car phone or CB radio ................................ 4-38
Power Power door lock ............................................... 3-4
Power outlet ................................................... 2-46
Power steering fluid ..................................... 8-14
Power steering system ............................. 5-120
Power windows ............................................. 2-51
Power moonroof ................................................. 2-54 Precautions
Braking precautions .................................... 5-121
Child restraints ............................................... 1-19
Cruise control ................................................. 5-65
Maintenance ..................................................... 8-2
Seat belt usage .............................................. 1-10
Supplemental restraint system .................. 1-38
When starting and driving ............................ 5-4
Pre-crash seat belts with
comfort function ................................................... 1-12
Predictive Forward Collision
Warning (PFCW) .............................................. 5-108
Push starting .......................................................... 6-11
Push-button ignition switch .................. 5-10, 5-11
R
Radio Car phone or CB radio ................................ 4-38
Rain-sensing auto wiper system ..................... 2-33
Rapid air pressure loss ......................................... 5-8
Readiness for inspection/maintenance
(I/M) test (US only) .......................................... 10-25
Rear door auto closure ......................................... 3-5
Rear door lock Child safety rear door lock ........................... 3-6
Rear pocket ........................................................... 2-50
Rear spot lights .................................................... 2-58
Rear sunshade ...................................................... 2-55
Rear window and outside mirror
defroster switch ................................................... 2-34
RearView monitor ................................................. 4-3
11-5