overheating NISSAN MURANO 2006 1.G Owners Manual
Page 232 of 341
best braking performance.
This procedure is described in the vehicle ser-
vice manual and can be performed by a NISSAN
dealer.Using the brakesAvoid resting your foot on the brake pedal while
driving. This will cause overheating of the brakes,
increases wear on the brake linings and pads,
and reduces gas mileage.
To help save the brakes and to prevent the
brakes from overheating, reduce speed and
downshift to a lower gear before going down a
slope or long grade. Overheated brakes may
reduce braking performance and could result in
loss of vehicle control.
While driving on a slippery surface,
be careful when braking, accelerat-
ing or downshifting. Abrupt braking
or accelerating could cause the
wheels to skid and result in an acci-
If the engine is not running or is
turned off while driving, the powerassist for the brakes will not work.
Braking will be harder.
ANTI-LOCK BRAKE SYSTEM (ABS)The anti-lock brake system controls the brakes
at each wheel so the wheels will not lock when
braking abruptly or when braking on slippery
surfaces. The system detects the rotation speed
at each wheel and varies the brake fluid pressure
to prevent each wheel from locking and sliding.
By preventing wheel lockup, the system helps
the driver maintain steering control and helps to
minimize swerving and spinning on slippery sur-
faces.Using the systemDepress the brake pedal and hold it down.
Do not pump the brake pedal. Doing so
may result in increased stopping dis-
tances.Normal operationThe anti-lock brake system will not operate atspeeds below 3 to 6 MPH (5 to 10 km/h) to
completely stop the vehicle. (The speeds will
vary according to road conditions.) When the
anti-lock system senses that one or more wheels
are close to locking up, the actuator (under the
hood) rapidly applies and releases hydraulic
pressure (like pumping the brakes very quickly).
While the actuator is working, you may feel a
pulsation in the brake pedal and hear a noise or
vibration from the actuator under the hood. This
is normal and indicates that the anti-lock system
is working properly. However, the ABS operation
may indicate that road conditions are hazardous
and extra care is required while driving.
Self-test featureThe anti-lock brake system consists of electronic
sensors, electric pumps and hydraulic solenoids
controlled by a computer. The computer has a
built-in diagnostic feature that tests the system
each time you start the engine and move the
vehicle at a low speed in forward or reverse.
When the self-test occurs, you may hear a
“clunk” noise and/or feel a pulsation in the brake
pedal. This is normal and is not an indication of
any malfunction. If the computer senses any
malfunction, it switches the anti-lock brake sys-
tem off and turns on the ABS warning light on
the instrument panel. The brake system then
operates normally, but without anti-lock assis-
Starting and driving
Page 248 of 341
Do not continue to drive if your ve-
hicle overheats. Doing so could
cause engine damage or a vehicle
To avoid the danger of being scalded,
never remove the radiator cap while
the engine is still hot. When the ra-
diator cap is removed, pressurized
hot water will spurt out, possibly
causing serious injury.
Do not open the hood if steam is
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 selector lever to
the P (Park) position.
Do not stop the engine.
2. Turn off the air conditioner switch. Open all
the windows, move the heater or air condi-tioner 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 tem-
perature 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
5. Open the engine hood.
If steam or water is coming from the
engine, stand clear to prevent getting
6. Visually check if the cooling fan is running.
The radiator hoses and radiator should not
If coolant is leaking or the cooling fan does
not run, stop the engine.
Be careful not to allow your hands,
hair, jewelry or clothing to come into
contact with, or get caught in, drive
belt, or cooling fan.
The engine cooling fan can start at
any time when the coolant tempera-
ture is high.
7. After the engine cools down, check the cool-
ant level in the reservoir tank with the engine
running. Add coolant to the reservoir tank if
necessary. Have your vehicle repaired at the
nearest NISSAN dealer.
IF YOUR VEHICLE OVERHEATS
In case of emergency
Page 268 of 341
CHANGING ENGINE COOLANTContact a NISSAN dealer if replacement is
Major cooling system repairs should be per-
formed by a NISSAN dealer. The service
procedures can be found in the appropriate
NISSAN Service Manual.
Improper servicing can result in reduced
heater performance and engine overheating.
To avoid 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
CHECKING ENGINE OIL LEVEL1. Park the vehicle on a level surface and apply
2. Run the engine until it reaches operating
3. Turn off the engine.Wait more than 10
minutes for the oil to drain back into the
4. Remove the dipstick as illustrated and wipe it
clean. Reinsert it all the way.5. Remove the dipstick again and check the oil
level. It should be between the H and L marks
1. If the oil level is below the L mark
remove the oil filler cap and pour recom-
mended oil through the opening.Do not
6. Recheck oil level with 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.
Oil level should be checked regularly.
Operating the engine with an insuffi-
cient amount of oil can damage the
engine, and such damage is not covered
Maintenance and do-it-yourself
Page 307 of 341
engine stalling and hard hot starting are experi-
enced after using oxygenate-blend fuels, imme-
diately change to a non-oxygenate fuel or a fuel
with a low blend of MTBE.
Take care not to spill gasoline during refu-
eling. Gasoline containing oxygenates can
cause paint damage.E-85 fuelE-85 fuel is a mixture of approximately 85% fuel
ethanol and 15% unleaded gasoline. E-85 can
only be used in a Flexible Fuel Vehicle (FFV). Do
not use E-85 fuel in your vehicle. U.S. govern-
ment regulations require fuel ethanol dispensing
pumps to be identified by a small, square, or-
ange and black label with the common abbre-
viation or the appropriate percentage for that
region.Aftermarket fuel additivesNISSAN does not recommend the use of any
aftermarket fuel additives (for example, fuel in-
jector cleaner, octane booster, intake valve de-
posit removers, etc.) which are sold commer-
cially. Many of these additives intended for gum,
varnish or deposit removal may contain active
solvent or similar ingredients that can be harmful
to the fuel system and engine.
Octane rating tipsUsing unleaded gasoline with an octane
rating lower than recommended can cause
persistent, heavy spark knock. (Spark
knock is a metallic rapping noise.) If se-
vere, 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, have your dealer correct the condi-
tion. Failure to correct the condition is
misuse of the vehicle, for which NISSAN is
Incorrect ignition timing will result in knocking,
after-run or overheating. This in turn may cause
excessive fuel consumption or damage to the
engine. If any of the above symptoms are en-
countered, have your vehicle checked at a
NISSAN dealer or other competent service fa-
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
Technical and consumer information
Page 321 of 341
Overloading or improper loading of a
trailer and its cargo can adversely affect
vehicle handling, braking and perfor-
mance and may lead to accidents.
Do not tow a trailer or haul a heavy
load for the first 500 miles (800 km).Your engine, axle or other parts
could be damaged.
For the first 500 miles (800 km) that
you tow a trailer, do not drive over 50
mph (80 km/h) and do not make
starts at full throttle. This helps the
engine and other parts of your ve-
hicle wear in at the heavier loads.
Your new vehicle was designed to be used
primarily to carry passengers and cargo. Re-
member that towing a trailer will place additional
loads on your vehicle’s engine, drive train, steer-
ing, braking and other systems.
MAXIMUM LOAD LIMITS
Maximum trailer loadsNever allow the total trailer load to exceed the
value specified in the Towing Load/Specification
Chart found later in this section. The total trailer
load equals trailer weight plus its cargo weight.
When towing a trailer load of 1,000 lbs. (454
kg) or more, trailers with a brake system
MUST be used.
The maximum GCWR (Gross Combined Weight
Rating) should not exceed the value specified inthe following Towing Load/Specification Chart.
The GCWR equals the combined weight of the
towing vehicle (including passengers and cargo)
plus the total trailer load.
Towing loads greater than specified or using
improper towing equipment could adversely af-
fect vehicle handling, braking and performance.
The ability of your vehicle to tow a trailer is not
only related to the maximum trailer loads, but
also the places you plan to tow. Tow weights
appropriate for level highway driving may have to
be reduced on very steep grades or in low
traction situations (for example, on slippery boat
Temperature conditions also can affect towing.
For example, towing a heavy trailer in high
outside temperatures on graded roads can af-
fect engine performance and cause overheating.
The transmission high fluid temperature protec-
tion mode, which helps reduce the chance of
transmission damage, could activate and auto-
matically decrease engine power. Vehicle speed
may decrease to 40 to 50 MPH (65 to 80 km/h)
under high load. Plan your trip carefully to ac-
count for trailer and vehicle load, weather, and
TOWING A TRAILER9-18
Technical and consumer information
Page 322 of 341
Overheating can result in reduced en-
gine power and vehicle speed. Also,
when the high temperature mode oper-
ates, vehicle speed may be gradually
reduced. The reduced speed may be
lower than other traffic, which could
increase the chance of a collision. Be
especially careful when driving. If nec-
essary, pull to the side of the road at a
safe place and allow the engine to cool
or the transmission to return to normal
Vehicle damage resulting from im-
proper towing procedures is not cov-
ered by NISSAN warranties.Tongue loadKeep the tongue load between 9 to 11 percent
of the total trailer load within the maximum
tongue load limits shown in the following TowingLoad/Specifications Chart. If the tongue load
becomes excessive, rearrange cargo to allow for
proper tongue load.
Maximum gross vehicle weight/
maximum gross axle weightThe gross vehicle weight of the towing vehicle
must not exceed the gross vehicle weight rating
(GVWR) shown on the F.M.V.S.S. certification
label. The gross vehicle weight equals the com-
bined weight of the unloaded vehicle, passen-
gers, luggage, hitch, trailer tongue load and any
other optional equipment. In addition, front or
rear gross axle weight must not exceed the
gross axle weight rating (GAWR) shown on the
F.M.V.S.S. certification label.
Technical and consumer information
Page 325 of 341
the proper equipment and to have it
Trailer lights should comply with federal and/or
local regulations. For assistance in hooking up
trailer lights, contact a NISSAN dealer or repu-
table trailer dealer.Trailer brakesIf your trailer is equipped with a braking system,
make sure it conforms to federal and/or local
regulations and that it is properly installed.
Never connect a trailer brake system
directly to the vehicle brake system.Pre-towing tipsBe 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 con-
dition; check for improper tongue load, over-
load, worn suspension or other possible
causes of either condition.Always secure items in the trailer to prevent
load shifts while driving.
Load the trailer so approximately 60% of the
trailer load is in the front half and 40% is in
the back half.
Check your hitch, trailer tire pressure, vehicle
tire pressure, trailer light operation, and trailer
wheel lug nuts every time you attach a trailer
to the vehicle.
Be certain your rear view mirrors conform to
all federal, state or local regulations. If not,
install any mirrors required for towing before
driving the vehicle.
Trailer towing tipsIn order to gain skill and an understanding of the
vehicle’s behavior, you should practice turning,
stopping and backing up in an area which is free
from traffic. Steering stability, and braking per-
formance will be somewhat different than under
normal driving conditions.
Always secure items in the trailer to prevent
load shift while driving.
Avoid abrupt starts, acceleration or stops.
Avoid sharp turns or lane changes.
Always drive your vehicle at a moderate
speed. Some states or provinces have spe-cific speed limits for vehicles that are towing
trailers. Obey the local speed limits.
When backing up, hold the bottom of the
steering wheel with one hand. Move your
hand in the direction in which you want the
trailer to go. Make small corrections and back
up slowly. If possible, have someone guide
you when you are backing up.
Always block the wheels on both vehicle and
trailer when parking. Parking on a slope is not
recommended; however, if you must do so,
first block the wheels and apply the parking
brake, and then move the selector lever into
the P (Park) position. If you move the selector
lever to the P (Park) position before blocking
the wheels and applying the parking brake,
transmission damage could occur.
When going down a hill, shift into a lower
gear and use the engine braking effect.
When going up a long grade, downshift the
transmission to a lower gear and reduce
speed to reduce chances of engine overload-
ing and/or overheating.
If the engine coolant rises to an extremely
high temperature when the air conditioning
system is on, turn off the air conditioner.
Coolant heat can be additionally vented by
opening the windows, switching the fan con-
trol to high and setting the temperature con-
Technical and consumer information