2018 INFINITI QX30 Engine repair

WARNING LIGHTS
Also see "Vehicle information display" later in
this section.
Anti-lock Braking System
(ABS) warning light
When the ignition switch is in the ON posi-
tion, the ABS warning light illuminates to in-
dicate that the ABS is operational. The light
then turns off within a few seconds after the
engine is started.
If the ABS light comes on while the engine is
running, it may indicate the anti-lock braking
system is not functioning properly. Have the
system checked. It is recommended that you
visit an INFINITI retailer for this service.
If the ABS warning light comes on while driv-
ing, it may indicate the ABS is not functioning
properly. Observe the additional display mes-
sages (if any) in the vehicle information dis-
play. Have the system checked by an
INFINITI retailer.
If an ABS malfunction occurs, the anti-lock
function is turned off. The brake system then
operates normally, but without anti-lock as-
sistance (see "Brake system").
BRAKE warning light (red)
WARNING
•Your brake system may not be working
properly if the warning light is on. Driv-
ing could be dangerous. If you judge it to
be safe, drive carefully to the nearest
service station for repairs. Otherwise,
have your vehicle towed because driving
it could be dangerous.
•Pressing the brake pedal when the igni-
tion switch is not in the ON position
and/or when the brake fluid level is low
may increase the stopping distance and
braking will require greater pedal effort
as well as pedal travel.
•If the brake fluid level is below the mini-
mum or MIN mark on the brake fluid
reservoir, do not drive until the brake
system has been checked. It is recom-
mended that you visit an INFINITI re-
tailer for this service.
When the ignition switch is placed in the ON
position, the light remains illuminated and
turns off when the engine is started. If the
light illuminates at any other time, it may
indicate that the brake system is not func-
tioning properly. If the BRAKE warning lightilluminates, stop the vehicle immediately and
contact an INFINITI retailer.
This light functions for both the parking brake
and the foot brake systems.
Low tire pressure warning
light (if equipped)
Your vehicle is equipped with a Tire Pressure
Monitoring System (TPMS) that monitors the
tire pressure of all its tires.
The low tire pressure warning light warns of
low tire pressure or indicates that the TPMS
is not functioning properly.
When the ignition switch is in the ON posi-
tion, the Low tire pressure warming light illu-
minates to indicate that the system is opera-
tional. The light then tuns off within a few
seconds after the engine is started.
Low tire pressure warning:
If the vehicle is being driven with low tire
pressure, the warning light will illuminate. A
tire pressure warning message also appears
in the vehicle information display.
When the low tire pressure warning light
illuminates, you should stop and adjust the
tire pressure of all 4 tires to the recom-
mended COLD tire pressure shown on the
Tire and Loading Information label located in
Instruments and controls2-9

If the seat belt warning light flashes, together
with an intermittent warning tone, this means
that the driver or passenger has not fastened
their seat belt, and the speed of the vehicle is
exceeding 15 MPH (25 km/h).
Supplemental Restraint
System (SRS) air bag
warning light
WARNING
If the supplemental air bag warning light is
on, it could mean that the front air bag,
driver's knee air bag, side air bag, curtain
air bag and/or pretensioner systems will
not operate in an accident. To help avoid
injury to yourself or others, have your ve-
hicle checked by an INFINITI retailer as
soon as possible.
When the ignition switch is in the ON posi-
tion, the Supplemental Restraint System
(SRS) air bag warning light illuminates to in-
dicate that the system is operational. The
light then tuns off within a few seconds after
the engine is started.
If any of the following conditions occur, the
front air bag, front seat-mounted side-
impact air bag, roof-mounted curtain air bag
and pretensioner systems need servicing:
•The supplemental air bag warning light
remains on for longer than a few seconds
once the engine is running.
•The supplemental air bag warning light
flashes intermittently.
•The supplemental air bag warning light
does not come on at all.
It is recommended you visit an INFINITI re-
tailer for these services. Unless checked and
repaired, the supplemental restraint system
(air bag system) and/or the pretensioner sys-
tems may not function properly. For addi-
tional information, refer to "Supplemental
Restraint System (SRS)".
Coolant warning light
WARNING
If the coolant warning light is lit, the engine
may not be being cooled sufficiently and
may be damaged.
Never drive with an overheated engine.
Driving when your engine is overheated can
cause some fluids which may have leaked
into the engine compartment to catch fire.
In addition, steam from an overheated en-
gine can cause serious burns, which can oc-
cur just by opening the hood.
There is a risk of injuryIf the red coolant warning light lights up while
the engine is running and the coolant tem-
perature gauge is at the start of the scale, the
temperature sensor for the coolant tempera-
ture gauge is faulty. The coolant temperature
is no longer being monitored. There is a risk of
engine damage if the coolant temperature is
too high.
Stop the vehicle immediately, paying atten-
tion to road and traffic conditions, and switch
off the engine. Do not continue driving under
any circumstances.
Consult an INFINITI retailer.
If the red coolant warning light comes on
while the engine is running, with or without
an accompanying warning tone, it could
mean that:
•The coolant level is too low.
•If the coolant level is correct, the airflow to
the engine radiator may be blocked or the
electric engine radiator fan may be mal-
functioning.
•The coolant is too hot and the engine is no
longer being cooled sufficiently.
Observe the additional display messages in
the vehicle information display.
2-12Instruments and controls

Message Possible causes/consequences and solutions
[Check Brake Fluid Level]There is insufficient brake fluid in the brake fluid reservoir.
In addition, the redwarning light lights up in the combination meter and a warning tone sounds.
1. Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving
under any circumstances.
2. Secure the vehicle against rolling away.
3. Check the brake fluid level. If brake fluid is necessary, add fluid and have the system checked. It is recommended you visit an
INFINITI retailer for this service. See "Brake fluid".
4. If the brake fluid level is correct, have the warning system checked. It is recommended you visit an INFINITI retailer for this
service.
WARNING•Your brake system may not be working properly if the warning light is on. Driving could be dangerous. If you judge it to be safe,
drive carefully to the nearest service station for repairs. Otherwise, have your vehicle towed because driving it could be
dangerous.
•Pressing the brake pedal with the engine stopped and/or low brake fluid level may increase your stopping distance and braking
will require greater pedal effort as well as pedal travel.
•If the brake fluid level is below the minimum or MIN mark on the brake fluid reservoir, do not drive until the brake system has
been checked. It is recommended you visit an INFINITI retailer for this service.
[Check Brake Pad Wear]The brake pads/linings have reached their wear limit.
It is recommended you visit an INFINITI retailer.
2-36Instruments and controls

Message Possible causes/consequences and solutions
[Radar Sensor (See
Operator's Manual):]At least one of the following driving systems or driving safety systems is temporarily restricted or inoperative:
•Forward Emergency Braking•Intelligent Cruise Control•Blind Spot Warning
Possible causes:
•The sensors in the radiator trim and/or at the sides of the rear bumpers are dirty.•The function of the driving system and/or driving safety system is impaired due to heavy rain or snow.
A warning tone also sounds.
Once the causes listed above no longer apply, the display message goes out. All driving systems/driving safety systems are
operative again.
If the display message does not disappear:
1. Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions
2. Secure the vehicle against rolling away.
3. Switch off the engine.
4. Clean the sensors in the following locations:
- In the radiator trim
- At the sides of the rear bumper
5. Restart the engine. The display message disappears.
[SRS Malfunction Service
Required]The restraint system needs servicing. The
warning light also lights up in the combination meter.
It is recommended you visit an INFINITI retailer for these services.
Unless checked and repaired, the Supplemental Restraint Systems and/or the pretensioner seat belt may not function properly.
WARNING
If this light is on, it could mean that the front air bag, side air bag, curtain air bag systems and/or pretensioner systems will not
operate in an accident. To help avoid injury to yourself or others, have your vehicle checked as soon as possible. It is recommended
you visit an INFINITI retailer for this service.
For further information about the restraint system, see "Supplemental Restraint System (SRS)".
2-38Instruments and controls

SYSTEM MAINTENANCE
CAUTION
Keep the surface of the sonar sensors (if
equipped) (located on the front and rear
bumper fascia) free from accumulations of
snow, ice and dirt. Do not scratch the sur-
face of the sonar sensors when cleaning. If
the sensors are covered, the accuracy of
the sonar function will be diminished.During the first 1,200 miles (2,000 km), fol-
low these recommendations to obtain maxi-
mum engine performance and ensure the fu-
ture reliability and economy of your new
vehicle. Failure to follow these recommenda-
tions may result in shortened engine life and
reduced engine performance.
•Avoid driving for long periods at constant
speed, either fast or slow, and do not run
the engine over 4,000 RPM.
•Do not accelerate at full throttle in any
gear.
•Avoid quick starts.
•Avoid hard braking as much as possible.
•Do not tow a trailer for the first 500 mi
(805 km). Your engine, axle or other parts
could be damaged.
You should also observe these notes on
break-in if the engine or parts of the drive
train on your vehicle have been replaced.
CAUTION
In certain driving and driving safety sys-
tems, the sensors adjust automatically
while a certain distance is being driven af-
ter the vehicle has been delivered or after
repairs. Full system effectiveness is not
reached until the end of this teach-in pro-
cess.
Brake pads/linings and rotors that are ei-
ther new or have been replaced only
achieve optimum braking effect after sev-
eral hundred miles of driving. Compensate
for the reduced braking effect by applying
greater force to the brake pedal
BREAK-IN SCHEDULE
5-84Starting and driving

•When a replacement tire is mounted or a
wheel is replaced, the TPMS will not
function and the low tire pressure warn-
ing light will flash for approximately
1 minute. The light will remain on after
1 minute. It is recommended you Con-
tact an INFINITI retailer as soon as pos-
sible for tire replacement and/or system
resetting.
•Replacing tires with those not originally
specified by INFINITI could affect the
proper operation of the TPMS.
•If you used Emergency Tire Sealant to
repair a minor tire puncture, the TPMS
sensor should be checked when repair-
ing or replacing the tire. It is recom-
mended you visit an INFINITI retailer for
this service.
The Tire Pressure Monitoring System (TPMS)
monitors tire pressure of all tires. When the
low tire pressure warning light is lit, and a tire
pressure-related warning (if equipped) ap-
pears in the vehicle information display, one
or more of your tires is significantly under-
inflated. If the vehicle is being driven with low
tire pressure, the TPMS will activate and
warn you of it by the low tire pressure warn-
ing light (in the meter panel). This system willactivate only when the vehicle is driven at
speeds above 16 MPH (25 km/h).
For more details about the TPMS, see "Tire
Pressure Monitoring System (TPMS)".
STOPPING VEHICLE
WARNING
•Be sure to apply the parking brake
firmly.
•Be sure that P (Park) is engaged.
•Never change tires when the vehicle is
on a slope, ice or slippery area. This is
hazardous.
•Never change tires when the oncoming
traffic is close to your vehicle. Call for
professional road assistance.
1. Safely move the vehicle off the road away
from traffic.
2. Turn on the hazard indicator flasher lights.
3. Park on a level surface.
4. Apply the parking brake.
5. Press the P (Park) button.
6. Turn off the engine.7. Open the hood and set up the triangle
reflector (if equipped):
•To warn other traffic.
•To signal professional road assistance
personnel that you need assistance.
8. Have all passengers get out of the vehicle
and stand in a safe place, away from
other traffic and clear of the vehicle.
In case of emergency6-3

WARNING
•Do not continue to drive if your vehicle
overheats. Doing so could cause engine
damage or a vehicle fire.
•To avoid the danger of being scalded,
never remove the radiator or coolant
reservoir cap while the engine is hot.
When the radiator or coolant reservoir
cap is removed, pressurized hot water
will spurt out, possibly causing serious
injury.
•Do not open the hood if steam is coming
out.
If
the engine of your vehicle is overheating
(indicated by the engine coolant temperature
gauge) or if you feel a lack of engine power,
detect unusual noise, etc., proceed as follows:
1. Move and park the vehicle safely off the
road and away from traffic.
2. Turn on the hazard warning flasher lights.
3. Apply the parking brake.
4. Press the P (Park) button.
DO NOT STOP THE ENGINE.
5. Open all windows.6. Switch off the air conditioner system (if
equipped).
7. Set the heater or air conditioner tempera-
ture control to maximum “HOT” and fan
speed control to maximum speed.
8. Exit the vehicle.
9. Visually inspect and listen for steam or
coolant escaping from the radiator before
opening the hood.
WARNING
Ifsteam or water is coming from the engine,
stand clear to prevent getting burned.
10. Open the hood. For details, see "Hood".
11.
Visually check if the cooling fan is running.
12. Visually check the radiator and radiator
hoses for leakage.
WARNING
Be careful not to allow your hands, hair,
jewelry or clothing to come into contact
with, or get caught in, engine belts or the
engine cooling fan. The engine cooling fan
can start at any time.13. After the engine cools down, check the
coolant level in the engine coolant reser-
voir with the engine running.Do not
open the radiator cap (if equipped).
14. If the level is low, remove the engine
coolant reservoir cap and add coolant
slowly into the reservoir. After refilling
the reservoir to the MAX level, install the
reservoir cap.
15. Close the hood.
Have your vehicle inspected or repaired. It is
recommended you visit an INFINITI retailer.
IF YOUR VEHICLE OVERHEATS
In case of emergency6-13

When performing any inspection or mainte-
nance work on your vehicle, always take care
to prevent serious accidental injury to your-
self or damage to the vehicle. The following
are general precautions which should be
closely observed.
WARNING
•Park the vehicle on a level surface, apply
the parking brake securely and block the
wheels to prevent the vehicle from mov-
ing. Press the P (Park) button.
•Be sure the ignition switch is in the OFF
position when performing any parts re-
placement or repairs.
•Do not work under the hood while the
engine is hot. Always turn off the engine
and wait until it cools down.
•If you must work with the engine run-
ning, keep your hands, clothing, hair and
tools away from moving fans, belts and
any other moving parts.
•It is advisable to secure or remove any
loose clothing and any jewelry, such as
rings, watches, etc. before working on
your vehicle.
•If you must run the engine in an enclosed
space such as a garage, be sure there is
proper ventilation for exhaust gases to
escape.
•Never get under the vehicle while it is
supported by a jack.
•Keep smoking materials, flame and
sparks away from fuel and the battery.
•Never connect or disconnect either the
battery or any transistorized compo-
nent connector while the ignition switch
is in the ON position.
•On gasoline engine models with the
Multiport Fuel Injection system, the fuel
filter and fuel lines should be serviced by
an INFINITI retailer or qualified work-
shop because the fuel lines are under
high pressure even when the engine is
turned off.
•Your vehicle is equipped with an auto-
matic engine cooling fan. It may come on
at any time without warning, even if the
ignition switch is in the OFF position
and the engine is not running. To avoid
injury, always disconnect the negative
battery cable before working near the
fan.
•Always wear eye protection whenever
you work on your vehicle.
•Never leave the engine or the transmis-
sion related component harness connec-
tor disconnected while the ignition
switch is in the ON position.
•Avoid direct contact with used engine oil
and coolant. Improperly disposed engine
oil, engine coolant, and/or other vehicle
fluids can hurt the environment. Always
conform to local regulations for disposal
of vehicle fluids.
This “ 8. Do-it-yourself” section provides in-
structions regarding only those items which
are relatively easy for an owner to perform.
You should be aware that incomplete or im-
proper servicing may result in operating diffi-
culties or excessive emissions, and could af-
fect your warranty coverage.If in doubt
about any servicing, it is recommended you
have it done by an INFINITI retailer.
MAINTENANCE PRECAUTIONS
8-2Do-it-yourself