Page 472 of 547
VQ35DE engine
1. Power steering fluid reservoir
2. Engine coolant reservoir
3. Drive belt location
4. Fuse box
5. Engine oil filler cap6. Brake fluid reservoir
7. Air cleaner
8. Fuse box
9. Fuse box/Fusible links
10 Fuse box
11. Battery12. Engine oil dipstick
13. Radiator cap
14. Windshield-washer fluid reservoir
NOTE:
Engine cover removed for clarity.
LDI2266
ENGINE COMPARTMENT CHECK
LOCATIONS
8-6Maintenance and do-it-yourself
Page 480 of 547

●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 discharge.
NOTE:
Care should be taken to avoid situations
that can lead to potential battery discharge
and potential no-start conditions such as:
1. Installation or extended use of electronic
accessories that consume battery power
when the engine is not running (Phone char-
gers, 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.WARNING
●Do not expose the battery to flames, an
electrical spark or a cigarette. Hydrogen
gas generated by the battery is explo-
sive. Explosive gases can cause blind-
ness or injury. Do not allow battery fluid
to contact your skin, eyes, fabrics or
painted surfaces. Sulfuric acid can
cause blindness or injury. After touch-
ing 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, al-
ways wear suitable eye protection and
remove all jewelry.
●Battery posts, terminals and related ac-
cessories contain lead and lead com-
pounds. Wash hands after handling.●Keep battery out of the reach of
children.
●Do not tip the battery. Keep the vent
caps tight and the battery level.
BATTERY
8-14Maintenance and do-it-yourself
Page 481 of 547
1. Remove the vent caps with a screwdriver as
shown. Use a cloth to protect the battery
case.
2. Check the fluid level in each cell. If it is
necessary to add fluid, add only distilled
water to bring the level up to the bottom of
the filler opening.Do not overfill.Reinstall
the vent caps.Vehicles operated in high temperatures or under
severe conditions require frequent checks of the
battery fluid level.
JUMP STARTING
If jump starting is necessary, see “Jump starting”
in the “In case of emergency” section of this
manual. If the engine does not start by jump
starting, the battery may have to be replaced.
Contact an INFINITI retailer.
WDI0224
LDI0302
Maintenance and do-it-yourself8-15
Page 482 of 547

CAUTION
●Do not ground accessories directly to
the battery terminal. Doing so will by-
pass the variable voltage control sys-
tem and the vehicle battery may not
charge completely.
●Use electrical accessories with the en-
gine running to avoid discharging the
vehicle battery.
Your vehicle is equipped with a variable voltage
control system. This system measures the
amount of electrical discharge from the battery
and controls voltage generated by the generator.The current sensor is located near the battery
along the negative battery cable. If you add elec-
trical accessories to your vehicle, be sure to
ground them to a suitable body ground such as
the frame or engine block area.
1. Drive belt automatic tensioner
2. Alternator
3. A/C compressor
4 Crankshaft pulley
WARNING
Be sure the ignition key is in the OFF or
LOCK position before servicing drive belt.
The engine could rotate unexpectedly.
1. Visually inspect the belt for signs of unusual
wear, cuts, fraying or looseness. If the belt is
in poor condition or is loose, have it replaced
or adjusted by an INFINITI retailer.
LDI2132LDI2099
VARIABLE VOLTAGE CONTROL
SYSTEMDRIVE BELT
8-16Maintenance and do-it-yourself
Page 489 of 547
Extended storage switch
If any electrical equipment does not operate,
remove the extended storage switch and check
for an open fuse.
NOTE:
The extended storage switch is used for
long term vehicle storage. Even if the ex-
tended storage switch is broken it is not
necessary to replace it. Replace only the
open fuse in the switch with a new fuse.How to replace 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.
CAUTION
Be careful not to allow children to swallow
the battery or removed parts.
LDI2035
BATTERY REPLACEMENT
Maintenance and do-it-yourself8-23
Page 490 of 547

INFINITI INTELLIGENT KEY
Replace the battery in the Intelligent Key as fol-
lows:
1. Remove the mechanical key from the Intelli-
gent Key.
2. Insert a small screwdriver
Ainto the slitB
of the corner and twist it to separate the
upper part from the lower part. Use a cloth to
protect the casing.
3. Replace the battery with a new one.
Recommended battery: CR2025 or equiva-
lent.
●Do not touch the internal circuit and elec-
tric terminals as doing so could cause a
malfunction.
●Hold the battery by the edges. Holding
the battery across the contact points will
seriously deplete the storage capacity.
●Make sure that the + side faces the bot-
tom of the case.4. Close the lid securely as illustrated
CD.
5. Operate the buttons to check the operation.
See an INFINITI retailer if you need assistance for
replacement.
FCC Notice:
For USA:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device may
not cause harmful interference, and (2) this
device must accept any interference re-
ceived, including interference that may
cause undesired operation. Note: Changes
SDI1867
WDI0535
8-24Maintenance and do-it-yourself
Page 529 of 547

WARNING
Properly adjust the weight distributing
hitch so the rear of the bumper is no
higher than the measured reference
height when the trailer is attached. If the
rear bumper is higher than the measured
reference height when loaded, the vehicle
may handle unpredictably which could
cause a loss of vehicle control and cause
serious personal injury or property
damage.
Sway control device
Sudden maneuvers, wind gusts, and buffeting
caused by other vehicles can affect trailer han-
dling. Sway control devices may be used to help
control these affects. If you choose to use one,
contact a reputable trailer hitch supplier to make
sure the sway control device will work with the
vehicle, hitch, trailer and the trailer’s brake sys-
tem. Follow the instructions provided by the
manufacturer for installing and using the sway
control device.
Class I hitch
Class I trailer hitch equipment (receiver, ball
mount and hitch ball) can be used to tow trailers
of a maximum weight of 2,000 lb (907 kg) .
Class II hitch
Class II trailer hitch equipment (receiver, ball
mount and hitch ball) can be used to tow trailers
of a maximum weight of 3,500 lb (1,587 kg).
Tire pressures
●When towing a trailer, inflate the ve-
hicle tires to the recommended cold
tire pressure indicated on the tire
placard.
●Trailer tire condition, size, load rating
and proper inflation pressure should
be in accordance with the trailer and
tire manufacturer’s specifications.
Safety chains
Always use suitable safety chains between your
vehicle and the trailer. The safety chains should
be crossed and should be attached to the hitch,
not to the vehicle bumper or axle. The safety
chains can be attached to the bumper if the hitch
ball is mounted to the bumper. Be sure to leave
enough slack in the chains to permit turning
corners.
Trailer lights
CAUTION
When splicing into the vehicle electrical
system, a commercially available power-
type module/converter must be used to
provide power for all trailer lighting. This
unit uses the vehicle battery as a direct
power source for all trailer lights while
using the vehicle tail light, stoplight and
turn signal circuits as a signal source. The
module/converter must draw no more that
15 milliamps from the stop and tail lamp
circuits. Using a module/converter that
exceeds these power requirements may
damage the vehicle’s electrical system.
See a reputable trailer retailer to obtain
the proper equipment and to have it
installed.
Trailer lights should comply with federal and/or
local regulations. For assistance in hooking up
trailer lights, contact an INFINITI retailer or repu-
table trailer retailer. Vehicles equipped with the
optional trailer tow package are equipped with a
7-pin trailer harness connector. If your trailer is
equipped with a flat 4-pin connector, an adapter
will be needed to connect the trailer lights to the
vehicle. Adapters are available at auto parts
stores and hitch retailers.
Technical and consumer information9-23
Page 531 of 547

2. Locate the jumper harness connector under
the lower portion of the instrument panel.
The connector is taped to the wiring harness
1as indicated.
●The connector is marked with a white tag
with “elec brake conn”.Wire color designation for electric trailer brake
controller jumper harness.
WIRE COLOR NOTE
RED/GREEN Vehicle stop lamp switch
to trailer brake controller.
BLACK Brake controller ground
(-) .
BROWN/WHITE Trailer brake controller
switched output.
RED/BLUE Not used
RED Fused trailer brake con-
troller battery feed (B+) .
3. Peel off the tape and connect the jumper
harness to the connector .
4. Release the parking brake.
5. Install the aftermarket electric trailer brake
controller according to the manufacturer’s
instructions.
Pre-towing tips
●Be certain your vehicle maintains a level
position when a loaded and/or unloaded
trailer is hitched. Do not drive the vehicle if it
has an abnormal nose-up or nose-down
condition; check for improper tongue load,
overload, worn suspension or other possible
causes of either condition.
LTI2045LTI2046
Technical and consumer information9-25