ECU INFINITI G-COUPE 2012 Repair Manual

.Keep the battery surface clean and dry.
Clean the battery with a solution of
baking soda and water.
. Make certain the terminal connections
are clean and securely tightened.
. If the vehicle is not to be used for 30
days or longer, disconnect the negative
(−) battery terminal cable to prevent
discharging it.
COUPE
CAUTION
When the battery cable is removed from the
battery terminal, do not close either of front
doors. The automatic window adjusting
function will not work, and the side roof
panel may be damaged.
To disconnect the negative (− ) battery
terminal, perform the procedure in the
following order. Otherwise, the window
and the side roof panel may contact and
be damaged.
1. Close the windows.
2. Open the hood.
3. Close and lock all the doors. 4. Disconnect the negative (−
) battery
terminal.
5. Securely close the hood.
To connect the negative (−) battery term-
inal, perform the procedure in the follow-
ing order. Otherwise, the window and the
side roof panel may contact and be
damaged.
1. Unlock and open the driver side door. Do not close the door.
2. Open the hood.
3. Connect the negative (−) battery term- inal. Then close the hood.
4. Fully open the driver side door window.
5. Close the driver side door and the window.
SEDAN AND COUPE
WARNING
. Do not expose the battery to flames or
electrical sparks. Hydrogen gas gener-
ated by the battery is explosive. Do not
allow battery fluid to contact your skin,
eyes, fabrics, or painted surfaces. After
touching a battery or battery cap, do not
touch or rub your eyes. Thoroughly wash your hands. If the acid contacts your
eyes, skin or clothing, immediately flush
with water for at least 15 minutes and
seek medical attention.
. Do not operate the vehicle if the fluid in
the battery is low. Low battery fluid can
cause a higher load on the battery which
can generate heat, reduce battery life,
and in some cases lead to an explosion.
. When working on or near a battery,
always wear suitable eye protection and
remove all jewelry.
. Battery posts, terminals and related
accessories contain lead and lead com-
pounds. Wash hands after handling.
. Keep the battery out of the reach of
children.
Maintenance and do-it-yourself8-17
BATTERY

8-20Maintenance and do-it-yourself
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”.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 PLUGS
If replacement is required, see an INFINITI
retailer for servicing.
Iridium-tipped spark plugs
It 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.
SPARK PLUGS

8-26Maintenance and do-it-yourself
case, remove the extended storage switch
and replace it with a new fuse of the same
rating.
How to remove the extended storage
switch:
1. To remove the extended storage switch,be sure the ignition switch is in the OFF
or LOCK position.
2. Be sure the headlight switch is in the OFF position.
3. Remove the fuse box cover.
4. Pinch the locking tabs
*1found on
each side of the storage switch.
5. Pull the storage switch straight out from the fuse box
*2.
SDI1834
Replace the battery as follows:
1. Release the lock knob at the back of the
Intelligent Key and remove the mechan-
ical key.
2. Insert a flat-blade screwdriver
*A
wrapped with a cloth into the slit*B
of the corner and twist it to separate
the upper part from the lower part.
SDI2042
3. Replace the battery with a new one.
Recommended battery: CR2032 or
equivalent.
.Do not touch the internal circuit andelectric terminals as it could cause a
malfunction.
.Hold the battery by the edges.
Holding the battery across the con-
tact points will seriously deplete the
storage capacity.
.Make sure that the + side faces thebottom of the case.
4. Align the tips of the upper and lower parts, and then push them together
until it is securely closed.
INTELLIGENT KEY BATTERY REPLACEMENT

specified by INFINITI could affect the
proper operation of the TPMS.
. For additional information regarding
tires, refer to “Important Tire Safety
Information” (US) or“Tire Safety Infor-
mation” (Canada) in the Warranty Infor-
mation Booklet.
All season tires
INFINITI specifies all season tires on some
models to provide good performance all
year, including snowy and icy road condi-
tions. All Season tires are identified by ALL
SEASON and/or M&S (Mud and Snow) on
the tire sidewall. Snow tires have better
snow traction than All Season tires and
may be more appropriate in some areas.
Summer tires
INFINITI specifies summer tires on some
models to provide superior performance on
dry roads. Summer tire performance is
substantially reduced in snow and ice.
Summer tires do not have the tire traction
rating M&S on the tire sidewall.
If you plan to operate your vehicle in snowy
or icy conditions, INFINITI recommends the
use of SNOW tires or ALL SEASON tires on all four wheels.
Snow tires
If snow tires are needed, it is necessary to
select tires equivalent in size and load
rating to the original equipment tires. If
you do not, it can adversely affect the
safety and handling of your vehicle.
Generally, snow tires will have lower speed
ratings than factory equipped tires and
may not match the potential maximum
vehicle speed. Never exceed the maximum
speed rating of the tire.
If you install snow tires, they must be the
same size, brand, construction and tread
pattern on all four wheels.
For additional traction on icy roads,
studded tires may be used. However, some
U.S. states and Canadian provinces prohi-
bit their use. Check local, state and
provincial laws before installing studded
tires. Skid and traction capabilities of
studded snow tires, on wet or dry surfaces,
may be poorer than that of non-studded
snow tires.
TIRE CHAINS
Use of tire chains may be prohibited
according to location. Check the local laws
before installing tire chains. When instal-
ling tire chains, make sure they are the
proper size for the tires on your vehicle and
are installed according to the chain man-
ufacturer’
s suggestions. Use only SAE
Class S chains. Class“S”chains are used
on vehicles with restricted tire to vehicle
clearance. Vehicles that can use Class “S”
chains are designed to meet the SAE
standard minimum clearances between
the tire and the closest vehicle suspension
or body component required to accommo-
date the use of a winter traction device (tire
chains or cables). The minimum clearances
are determined using the factory equipped
tire size. Other types may damage your
vehicle. Use chain tensioners when recom-
mended by the tire chain manufacturer to
ensure a tight fit. Loose end links of the
tire chain must be secured or removed to
prevent the possibility of whipping action
damage to the fenders or underbody. If
possible, avoid fully loading your vehicle
when using tire chains. In addition, drive at
a reduced speed. Otherwise, your vehicle
may be damaged and/or vehicle handling
Maintenance and do-it-yourself8-39

9-22Technical and consumer information
3.Subtract the combined weight of
the driver and passengers from
XXX kg or XXX lbs.
4.The resulting figure equals the
available amount of cargo and
luggage load capacity. For exam-
ple, if the XXX amount equals
1400 lbs. and there will be five
150 lb. passengers in your vehi-
cle, the amount of available cargo
and luggage load capacity is 650
lbs. (1400−750 (5 x 150) = 650
lbs or 640 −340 (5 x 70) = 300
kg.)
5.Determine the combined weight of
luggage and cargo being loaded
on the vehicle. That weight may
not safely exceed the available
cargo and luggage load capacity
calculated in Step 4.
6.If your vehicle will be towing a
trailer, load from your trailer will
be transferred to your vehicle.
Consult this manual to determine
how this reduces the available cargo and luggage load capacity
of your vehicle.
Before driving a loaded vehicle,
confirm that you do not exceed the
Gross Vehicle Weight Rating (GVWR)
or the Gross Axle Weight Rating
(GAWR) for your vehicle. (See “Mea-
surement of weights” (P.9-23).)
Also check tires for proper inflation
pressures. See the Tire and Loading
Information label.
LOADING TIPS
.The GVW must not exceed GVWR or GAWR as specified on the F.M.V.
S.S./C.M.V.S.S. certification label.
.Do not load the front and rear axle
to the GAWR. Doing so will exceed
the GVWR.
WARNING
.Properly secure all cargo to help
prevent it from sliding or shifting.
Do not place cargo higher than the seatbacks. In a sudden stop or
collision, unsecured cargo could
cause personal injury.
.Do not load your vehicle any
heavier than the GVWR or the
maximum front and rear GAWRs.
If you do, parts of your vehicle can
break, tire damage could occur, or
it can change the way your vehicle
handles. This could result in loss
of control and cause personal
injury.
.Overloading could not only short-
en the life of your vehicle and the
tires, but also could lead to
hazardous vehicle handling and
long braking distance. This may
cause a premature tire malfunc-
tion, which could result in a
serious accident and personal in-
jury. Failures caused by overload-
ing are not covered by the
vehicle’s warranty.

MEASUREMENT OF WEIGHTS
Secure loose items to prevent weight
shifts that could affect the balance of
your vehicle. When the vehicle is
loaded, drive to a scale and weigh
the front and the rear wheels sepa-
rately to determine axle loads. In-
dividual axle loads should not
exceed either of the gross axle
weight ratings (GAWR). The total of
the axle loads should not exceed the
gross vehicle weight rating (GVWR).
These ratings are given on the
vehicle certification label. If weight
ratings are exceeded, move or re-
move items to bring all weights
below the ratings.
Your vehicle was designed to be used to
carry passengers and cargo. INFINITI does
not recommend trailer towing, because it
places additional loads on your vehicle’s
engine, drivetrain, steering, braking, and
other systems.
An INFINITI Towing Guide (U.S. only) is
available on the website at
www.InfinitiUSA.com. This guide includes
information on trailer towing capability and
the special equipment required for proper
towing.
CAUTION
Vehicle damage resulting from towing a
trailer is not covered by INFINITI warranties.
FLAT TOWING
Towing your vehicle with all four wheels on
the ground is sometimes called flat towing.
This method is sometimes used when
towing a vehicle behind a recreational
vehicle, such as a motor home.
CAUTION
.Failure to follow these guidelines can
result in severe transmission damage.
. Whenever flat towing your vehicle, al-
ways tow forward, never backward.
. DO NOT tow any automatic transmission
vehicle with all four wheels on the
ground (flat towing). Doing so WILL
DAMAGE internal transmission parts
due to lack of transmission lubrication.
. DO NOT tow an All-Wheel Drive (AWD)
vehicle with any of the wheels on the
ground. Doing so may cause serious and
expensive damage to the powertrain.
. For emergency towing procedures refer
to“Towing recommended by INFINITI”
(P.6-12) of this manual.
Automatic transmission
All-Wheel Drive (AWD) models:
Do not tow an AWD vehicle with any of the
wheels on the ground.
Two-Wheel Drive (2WD) models:
To tow a vehicle equipped with an auto-
matic transmission, an appropriate vehicle
Technical and consumer information9-23
TOWING A TRAILER

9-26Technical and consumer information
For USA
If you believe that your vehicle has a
defect which could cause a crash or
could cause injury or death, you
should immediately inform the Na-
tional Highway Traffic Safety Admin-
istration (NHTSA) in addition to
notifying INFINITI.
If NHTSA receives similar complaints,
it may open an investigation, and if it
finds that a safety defect exists in a
group of vehicles, it may order a
recall and remedy campaign. How-
ever, NHTSA cannot become involved
in individual problems between you,
your retailer, or INFINITI.
To contact NHTSA, you may call the
Vehicle Safety Hotline toll-free at 1-
888- 327-4236 (TTY: 1-800-424-
9153); go to http://www.safercar.
gov; or write to: Administrator,
NHTSA, 400 Seventh Street, SW.,
Washington, D.C. 20590. You can
also obtain other information about
motor vehicle safety from http://www.safercar.gov.
You may notify INFINITI by contacting
our Consumer Affairs Department,
toll-free, at 1-800-662-6200.
For Canada
If you believe that your vehicle has a
defect which could cause a crash or
could cause injury or death, you
should immediately inform Transport
Canada in addition to notifying
INFINITI.
If Transport Canada receives com-
plaints, it may open an investigation,
and if it finds that a safety defect
exists in a group of vehicles, it may
request that INFINITI conduct a recall
campaign. However, Transport Cana-
da cannot become involved in indivi-
dual problems between you, your
retailer, or INFINITI.
You may contact Transport Canada’s
Defect Investigations and Recalls
Division toll free at 1-800-333-0510.
You may also report safety defects
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/road-
safety (English speakers) or www.tc.
gc.ca/securiteroutiere (French speak-
ers).
To notify INFINITI of any safety con-
cerns please contact our Consumer
Information Centre toll free at 1-800-
361-4792.
REPORTING SAFETY DEFECTS

10 Index
Number
4 Wheel Active Steer (4WAS) system ................. 5-57
4 Wheel Active Steer (4WAS) warning light ....... 2-14
A
ABS (Anti-lock Braking System) ......................... 5-54
Advanced air bag system .................................. 1-46
Air bag systemAdvanced air bag system ............................. 1-46
Front passenger air bag and status light ...... 1-49
Front-seat mounted side-impact supplemental
air bag system ............................................. 1-52
Roof-mounted curtain side-impact
supplemental air bag system ....................... 1-52
Air bag warning labels ...................................... 1-55
Air bag warning light ............................... 1-55, 2-17
Air cleaner housing filter ................................... 8-21
Air conditioner Air conditioner service ................................. 4-41
Air conditioner specification label ................ 9-14
Air conditioning system refrigerant and
lubricant recommendations .................. 4-41, 9-7
Automatic climate control ............................ 4-31
In-cabin microfilter ....................................... 4-40
Alarm, How to stop alarm (see vehicle
security system) ................................................ 2-29
Alcohol, drugs and driving .................................. 5-8
All-wheel drive (AWD) ........................................ 5-45 All-wheel drive (AWD) driving
safety precautions .............................................. 5-8
All-wheel drive (AWD) warning light .................. 2-12
Antenna ............................................................ 4-89
Anti-lock Braking System (ABS) ......................... 5-54
Anti-lock braking system (ABS) warning light .... 2-13
Appearance care
Exterior appearance care ................................ 7-2
Interior appearance care ................................ 7-4
Armrest ............................................................. 1-13
Ashtrays (See cigarette lighter and ashtrays) .... 2-44
Audible reminders ............................................ 2-19
Audio operation precautions ............................. 4-41
Audio system .................................................... 4-41
Steering wheel audio controls ...................... 4-87
Autolight system ............................................... 2-35
Automatic
Automatic adjusting function
(front windows) ............................................ 2-54
Automatic climate control .................. 4-32, 4-34
Automatic transmission fluid (ATF) ............... 8-14
Climate control ............................................ 4-31
Door locks ..................................................... 3-6
Drive positioner ........................................... 3-31
Driving with automatic transmission ............ 5-14
Moonroof ..................................................... 2-55
Seat positioner ............................................ 3-31
Average fuel consumption and speed ................ 2-26
Avoiding collision and rollover ............................ 5-6
B
Battery .............................................................. 8-17
Battery saver system ................................... 2-37
Intelligent Key .............................................. 8-26
Variable voltage control system ................... 8-19
Before starting the engine ................................ 5-12
Belts (See drive belts) ....................................... 8-19
Bluetooth
®hands-free phone system
(models with navigation system) ....................... 4-90
Bluetooth
®hands-free phone system
(models without navigation system) ................ 4-100
Bluetooth
®streaming audio ............................. 4-70
Brake Anti-lock Braking System (ABS) .................... 5-54
Brake and clutch fluid .................................. 8-15
Brake fluid ................................................... 8-15
Brake system ............................................... 5-51
Parking brake operation ............................... 5-20
Warning light ............................................... 2-13
Break-in schedule ............................................. 5-45
Brightness control Display ON/OFF button .................................. 4-9
Instrument panel ......................................... 2-38
Bulb check/instrument panel ............................ 2-12
Bulb replacement .............................................. 8-28

10-6
Reporting safety defects ................................... 9-26
Roadside assistance program ............................. 6-2
Rollover .............................................................. 5-6
Roof, Moonroof ................................................. 2-55
S
SafetyChild seat belts ........................................... 1-21
Satellite radio operation ................................... 4-58
Seat adjustment Front power seat adjustment .......................... 1-3
Front seats ..................................................... 1-3
Seat belt(s) Child safety ................................................. 1-21
Infants ......................................................... 1-22
Injured persons ........................................... 1-16Larger children ............................................. 1-22
Precautions on seat belt usage .................... 1-14
Pre-crash seat belts ..................................... 1-16
Pregnant women .......................................... 1-16
Seat belt cleaning .......................................... 7-6
Seat belt extenders ...................................... 1-20
Seat belt maintenance ................................. 1-21
Seat belt warning light and chime ............... 2-17
Seat belts .................................................... 1-14
Seat belts with pretensioners ...................... 1-54
Shoulder belt height adjustment .................. 1-19
Small children ............................................. 1-22
Three-point type .......................................... 1-16
Seat synchronization function ........................... 3-32 Seat(s)
Driver-side memory ...................................... 3-31
Heated seats ............................................... 2-40
Seats ............................................................. 1-2
Security system
(INFINITI Vehicle Immobilizer System),
Engine start ...................................................... 2-30
Security system, Vehicle security system .......... 2-28
Selector lever, Shift lock release ....................... 5-17
Servicing climate control ................................... 4-41
SETTING button ................................................. 4-14
Shift lock release, Transmission ........................ 5-17
Shift “P”warning (Automatic
Transmission models) ....................................... 2-22
Shifting Automatic transmission ............................... 5-14
Manual transmission ................................... 5-18
Shoulder belt height adjustment ....................... 1-19
Sliding front passenger’s seat ............................. 1-5
Snow mode switch ............................................ 2-41
Sonar system .................................................... 5-48
Sonar system off switch .................................... 5-50
Spare tire ........................................................... 9-9
Spark plugs ...................................................... 8-20
Speedometer ...................................................... 2-7
Starting Before starting the engine ........................... 5-12
Jump starting ................................................. 6-8
Precautions when starting and driving ........... 5-3
Push starting ............................................... 6-10
Starting the engine ...................................... 5-13 STATUS button .................................................... 4-9
Status light, Front passenger air bag ................ 1-49
Steering
Power steering fluid ..................................... 8-14
Power steering system ................................. 5-50
Steering-wheel-mounted controls
for audio ...................................................... 4-87
Tilt/telescopic steering ................................. 3-26
Storage ............................................................. 2-45
Storage box ...................................................... 2-50
Stowing golf bags ............................................. 2-51
Sun visors ........................................................ 3-27
Sunglasses holder ............................................ 2-47
Supplemental air bag warning labels ................ 1-55
Supplemental air bag warning light ......... 1-55, 2-17
Supplemental restraint system .......................... 1-41
Precautions on supplemental
restraint system ........................................... 1-41
Switch
Autolight switch ........................................... 2-35
Fog light switch ........................................... 2-39
Hazard warning flasher switch ..................... 2-39
Headlight switch .......................................... 2-35
Ignition switch ............................................. 5-14
Ignition switch manual
transmission models .................................... 5-18
Power door lock switch .................................. 3-5
Rear window and outside mirror
defroster switch ........................................... 2-34
Snow mode switch ....................................... 2-41
Turn signal switch ........................................ 2-38

Vehicle dynamic control (VDC) off switch ...... 2-42
T
Tachometer ......................................................... 2-8
Temperature gauge, Engine coolant
temperature gauge .............................................. 2-8
Theft (INFINITI Vehicle Immobilizer System),
Engine start ...................................................... 2-30
Thigh extension .................................................. 1-5
Three-way catalyst .............................................. 5-4
Tilt/telescopic steering ...................................... 3-26
TirePressure, Low tire pressure warning light .... 2-15
Tire replacement indicator ............................ 2-24
Tire rotation ................................................. 8-40
Tires Flat tire .......................................................... 6-2
Low tire pressure warning system .................. 5-4
Spare tire .................................................... 8-43
Tire and Loading information label ...... 8-34, 9-14
Tire chains ................................................... 8-39
Tire dressing .................................................. 7-4
Tire pressure................................................ 8-33
Tire pressure monitoring
system (TPMS) ....................................... 5-4, 6-2
Types of tires ............................................... 8-38
Uniform tire quality grading ......................... 9-24
Wheel/tire size .............................................. 9-9
Wheels and tires .......................................... 8-33
Touch screen system ........................................... 4-5 Towing
Flat towing ................................................... 9-23
Tow truck towing .......................................... 6-11
Towing a trailer ............................................ 9-23
TPMS, Tire pressure monitoring system .............. 5-4
TPMS, Tire pressure warning system ................... 6-2
Trailer towing .................................................... 9-23
Transceiver, HomeLink
®Universal Transceiver ... 2-59
Transmission Automatic transmission fluid (ATF) ............... 8-14
Driving with automatic transmission ............ 5-14
Driving with manual transmission ................ 5-18
Transmission selector lever lock release ...... 5-17
Transmitter (See remote keyless entry system) ... 3-14
Traveling or registering your vehicle in
another country ................................................ 9-11
Trip computer ................................................... 2-26
Trip odometer ................................................... 2-26
Trunk Interior trunk lid release .............................. 3-21
Light ............................................................ 2-59
Pass-through ............................................... 1-13
Trunk lid ...................................................... 3-18
Trunk lid release switch ............................... 3-19
Trunk net for extra window washer fluid ...... 2-51
Trunk open request switch ........................... 3-19
Trunk release power cancel switch ............... 3-20
Turn signal switch ............................................. 2-38
U
Underbody cleaning ............................................ 7-3
Uniform tire quality grading .............................. 9-24
USB memory operation ..................................... 4-66
V
Vanity mirror ..................................................... 3-31
Vanity mirror lights ........................................... 2-58
Variable voltage control system ........................ 8-19
Vehicle
Dimensions .................................................. 9-11
Identification number (VIN) .......................... 9-12
Loading information ..................................... 9-20
Recovery (freeing a stuck vehicle) ................ 6-13
Security system ........................................... 2-28
Vehicle dynamic control (VDC) off switch ...... 2-42
Vehicle dynamic control (VDC) system .......... 5-55
Vehicle information and settings (display) ...... 4-9
Ventilators ........................................................ 4-30
Voice command (Bluetooth
®Hands-Free
Phone System) ................................................ 4-106
Voice command (INFINITI voice
recognition system) ........................................ 4-121
Voice recognition system ................................ 4-114
Voice recognition, Alternate command mode ... 4-127
Voice recognition, Standard mode ................... 4-114
10-7