ECU INFINITI QX30 2018 Repair Manual

WARNING
•Never leave children or adults who
would normally require the support of
others alone in your vehicle. Pets should
not be left alone either. They could un-
knowingly activate switches or controls
and inadvertently become involved in a
serious accident and injure themselves.
On hot, sunny days, temperatures in a
closed vehicle could quickly become high
enough to cause severe or possibly fatal
illness to people or animals.
•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.
•To avoid raising the center of gravity
excessively, do not exceed the rated ca-
pacity of the roof rack (if so equipped)
and evenly distribute the load.
EXHAUST GAS (CARBON
MONOXIDE)
WARNING
•Do not breathe exhaust gas; it contains
colorless and odorless carbon monoxide.
Carbon monoxide is dangerous. It can
cause unconsciousness or death.
•If you suspect that exhaust fumes are
entering the vehicle, drive with all win-
dows fully open, and have the vehicle
inspected immediately.
•Do not run the engine in closed spaces
such as a garage.
•Do not park the vehicle with the engine
running for an extended period of time.
•Keep the lift gate closed while driving,
otherwise exhaust gas could be drawn
into the passenger compartment. If you
must drive with the lift gate open, fol-
low these precautions: – Open all the windows.
– Turn the air recirculation switch off
and set the fan control to the highest
level to circulate the air.
•If electrical wiring or other cable con-
nections must pass to a trailer through
the seal ion the lift gate or body, follow the manufacturer's recommendations
to prevent carbon monoxide entry into
the vehicle.
•The exhaust system and body should be
inspected by a qualified mechanic when-
ever: – You suspect that exhaust fumes are
entering into the passenger compart-
ment.
– You notice a change in the sound of
the exhaust system.
– You have had an accident involving
damage to the exhaust system, un-
derbody, or rear of the vehicle.
THREE-WAY CATALYST (IF
EQUIPPED)
The three-way catalyst is an emission control
device installed in the exhaust system. Ex-
haust gas in the three-way catalyst is burned
at high temperatures to help reduce pollut-
ants.
WARNING
•The exhaust gas and the exhaust system
are very hot. Keep people, animals and
flammable materials away from the ex-
haust system components.
PRECAUTIONS WHEN STARTING
AND DRIVING
5-4Starting and driving

•Heavy braking going down a hill could
cause your brakes to overheat and fade,
resulting in loss of control and an acci-
dent. Apply brakes lightly and use a low
gear to control your speed.
•Unsecured cargo can be thrown around
when driving over rough terrain. Prop-
erly secure all cargo so it will not be
thrown forward and cause injury to you
or your passengers.
•Secure heavy loads in the cargo area as
far forward and as low as possible. Do
not equip the vehicle with tires larger
than specified in this manual. This could
cause your vehicle to roll over.
•Do not grip the inside or spokes of the
steering wheel when driving off-road.
The steering wheel could move suddenly
and injure your hands. Instead drive with
your fingers and thumbs on the outside
of the rim.
•Before operating the vehicle, ensure
that the driver and all passengers have
their seat belts fastened.
•Always drive with the floor mats in place
as the floor may become hot.
•Lower your speed when encountering
strong crosswinds. With a higher center of gravity, your INFINITI is more af-
fected by strong side winds. Slower
speeds ensure better vehicle control.
•Do not drive beyond the performance
capability of the tires, even with AWD
engaged.
•For AWD equipped vehicles, do not at-
tempt to raise two wheels off the
ground and shift the transmission to any
drive or reverse position with the engine
running. Doing so may result in drive-
train damage or unexpected vehicle
movement which could result in serious
vehicle damage or personal injury.
•Do not attempt to test an AWD
equipped vehicle on a 2-wheel dyna-
mometer (such as the dynamometers
used by some states for emissions test-
ing), or similar equipment even if the
other two wheels are raised off the
ground. Make sure you inform test facil-
ity personnel that your vehicle is
equipped with AWD before it is placed
on a dynamometer. Using the wrong
test equipment may result in drivetrain
damage or unexpected vehicle move-
ment which could result in serious ve-
hicle damage or personal injury.
•When a wheel is off the ground due to an
unlevel surface, do not spin the wheel
excessively.
•Accelerating quickly, sharp steering ma-
neuvers or sudden braking may cause
loss of control.
•If at all possible, avoid sharp turning ma-
neuvers, particularly at high speeds.
Your INFINITI vehicle has a higher cen-
ter of gravity than a passenger car. The
vehicle is not designed for cornering at
the same speeds as passenger cars. Fail-
ure to operate this vehicle correctly
could result in loss of control and/or a
rollover accident.
•Always use tires of the same type, size,
brand, construction (bias, bias-belted,
or radial), and tread pattern on all four
wheels. Install tire chains on the front
wheels when driving on slippery roads
and drive carefully.
•Be sure to check the brakes immediately
after driving in mud or water. .
•Avoid parking your vehicle on steep hills.
If you get out of the vehicle and it rolls
forward, backward or sideways, you
could be injured.
Starting and driving5-13

At the end of a journey turn the ignition OFF
to avoid a discharged battery. The Idle
Stop/Start System does not automatically
turn ignition off.Vehicles with Intelligent Key are equipped
with keys featuring an integrated Intelligent
Key function and in some cases a detachable
push-button ignition switch (Start/Stop but-
ton).
A check which periodically establishes a radio
connection between the vehicle and the key
determines whether a valid key is in the ve-
hicle. This occurs, for example, when starting
the engine.
When you insert the push-button ignition
switch into the ignition lock, the system
needs approximately two seconds recogni-
tion time. You can then use the push-button
ignition switch.
WARNING
Do not operate the push-button ignition
switch while driving the vehicle except in
an emergency. (The engine will stop when
the ignition switch is pressed 3 consecutive
times in quick succession or the ignition
switch is pushed and held for more than 2
seconds.) If the engine stops while the ve-
hicle is being driven, this could lead to a
crash and serious injury.
Before operating the push-button ignition
switch:
•Select P (Park). Pressing the Start/Stop button several times
in succession corresponds to the different
key positions in the ignition lock. Prerequisite
for this is that:
•You do not depress the brake pedal.
If you depress the brake pedal and press the
Start/Stop button, the engine starts immedi-
ately.
To start the vehicle without actively using the
key:
•The push-button ignition switch must be
inserted in the ignition lock.
•The key must be in the vehicle.
•The vehicle must not be locked with the
key or Intelligent Key (see "Keys" in the "3.
Pre-driving checks and adjustments" sec-
tion).
Do not keep the Intelligent Key:
•With electronic devices, for example a mo-
bile phone or another key.
•With metallic objects, for example coins or
metal film.
•Inside metallic objects, for example a metal
case.
This can affect the functionality of the Intel-
ligent Key.
PUSH-BUTTON IGNITION SWITCH
(IF EQUIPPED)
5-16Starting and driving

You do not have to remove the start/stop
button from the ignition lock when you leave
the vehicle. You should, however, always
take the key with you when leaving the ve-
hicle. As long as the key is in the vehicle:
•The vehicle can be started using the push-
button ignition switch.
•The electrically powered equipment can be
operated.
EMERGENCY ENGINE SHUT OFF
To shut off the engine in an emergency situ-
ation while driving, perform the following
procedure:
•Rapidly push the push-button ignition
switch 3 consecutive times in less than 1.5
seconds, or
•Push and hold the push-button ignition
switch for more than 2 seconds.
•Make sure the area around the vehicle is
clear.
•Check fluid levels such as engine oil, cool-
ant, brake fluid, and windshield-washer
fluid as frequently as possible, or at least
whenever you refuel.
•Check that all windows and lights are
clean.
•Visually inspect tires for their appearance
and condition. Measure and check the tire
pressure for proper inflation.
•Check that all doors are closed.
•Position seat and adjust head restraints/
headrests.
•Adjust the inside and outside rear view
mirrors.
•Fasten your seat belt and ask all passen-
gers to do likewise.
•Check the operation of the warning lights
when the ignition switch is pushed to the
ON position.
STARTING PROCEDURE WITH
THE KEY
0OFF position
1ACC position
2ON position
3START position
1. Apply the parking brake.
2. Shift the transmission to position P (Park) by pressing the

button.
The transmission position indicator in the
vehicle information display shows

When the transmission is in position N
(Neutral), you can also start the engine
with the brake pedal depressed.
The starter is designed not to operate if the
shift lever is in any of the driving positions.
NPA1483
BEFORE STARTING ENGINE STARTING ENGINE
5-18Starting and driving

P (Park):
CAUTION
To prevent transmission damage, use the P
(Park) position only when the vehicle is
completely stopped.
Use this position when the vehicle is parked
or when starting the engine. Always make
sure that the vehicle is completely stopped
before pressing button
1to engage the P
(Park) position. For maximum safety, the
brake pedal must be depressed before en-
gaging the P (Park) position. Use this position
together with the parking brake. When park-
ing on a hill, first depress the brake pedal,
apply the parking brake and then engage the
P (Park) position. The parking lock should not
be used as a brake when parking. In order to secure the vehicle, always apply the electric
parking brake in addition to the parking lock.
In the event of a malfunction of the vehicle's
electronics, the transmission may lock in po-
sition P (Park). Have the vehicle electronics
checked immediately. It is recommended you
visit an INFINITI retailer for this service.
Park position P is automatically engaged if:
•You switch off the engine using the key
and remove the key.
•You open the driver's door when the ve-
hicle is stationary or driving at very low
speed and the transmission is in position D
(Drive) or R (Reverse).
R (Reverse):
CAUTION
To prevent transmission damage, use the R
(Reverse) position only when the vehicle is
completely stopped.
Use this position to back up the vehicle.
Make sure the vehicle is completely stopped
before selecting the R (Reverse) position. The
brake pedal must be depressed and the shift
lever button pushed in to move the shift le-
ver from P (Park), N (Neutral) or any drive
position to R (Reverse). N (Neutral):
Neither forward nor reverse gear is engaged.
The engine can be started in this position. You
may shift to N (Neutral) and restart a stalled
engine while driving the vehicle.
D (Drive):
Use this position for all normal forward driv-
ing.
The automatic transmission changes gear
automatically. All forward gears are avail-
able.
Changing gear
The automatic transmission shifts to the in-
dividual gears automatically when it is in
transmission position D (Drive). Shifting is de-
termined by:
•The selected drive program.
•The position of the accelerator pedal.
•The road speed.
Accelerator pedal position:
Your style of driving influences how the au-
tomatic transmission shifts gear:
•little throttle: early upshifts
•more throttle: late upshifts
NSD586
5-22Starting and driving

WARNING
•Be sure the parking brake is fully re-
leased before driving. Failure to do so
can cause brake failure and lead to an
accident.
•Do not release the parking brake from
outside the vehicle.
•Do not use the shift lever in place of the
parking brake. When parking, be sure
the parking brake is fully engaged.
•To help avoid risk of injury or death
through unintended operation of the
vehicle and/or its systems, do not leave
children, people who require the assis-
tance of others, or pets unattended in
your vehicle. Additionally, the tempera-
ture inside a closed vehicle on a warm
day can quickly become high enough to
cause a significant risk of injury or death
to people and pets. The function of the electric parking brake is
dependent on the on-board voltage. If the
on-board voltage is low or if there is a mal-
function in the system, it may not be possible
to apply the released parking brake. If this is
the case:
•Only park the vehicle on level ground and
secure it to prevent it from rolling away.
•Shift the automatic transmission to posi-
tion P (Park).
•It is recommended you contact an
INFINITI retailer.
It may not be possible to release an applied
parking brake if the on-board voltage is low
or if there is a malfunction in the system. It is
recommended you contact an INFINITI re-
tailer.
The electric parking brake carries out a func-
tion check at regular intervals when the en-
gine is switched off. Noises that occur are
normal.APPLYING/RELEASING
MANUALLY
The electric parking brake can be applied or
released by operating the parking brake
handle
1.
To apply: Push handle
1.
When the electric parking brake is applied,
the red
indicator light lights up in the
combination meter.
The electric parking brake can also be applied
when the ignition switch is in the OFF posi-
tion or the key is removed.
To release: With the ignition switch in the ON
position, pull handle
1.
NPA1485
PARKING BRAKE
Starting and driving5-27

The Idle Stop/Start function switches the
engine off automatically if the vehicle is
stopped under certain conditions.
When pulling away again, the engine starts
automatically. The Idle Stop/Start function
thereby helps you to reduce the fuel con-
sumption and emissions of your vehicle.
WARNING
If the engine is switched off automatically
and you exit the vehicle, the engine is re-
started automatically. The vehicle may be-
gin moving There is a risk of accident and
injury.
If you wish to exit the vehicle, always turn
off the ignition and secure the vehicle
against rolling away.If the
Idle Stop/Start symbol is shown
in green in the vehicle information display, the
Idle Stop/Start function switches the engine
off automatically once the vehicle stops mov-
ing.
The Idle Stop/Start function is automatically
activated each time you start the engine with
the ignition key.
If the Idle Stop/Start function has been
manually deactivated (see "Deactivating/
activating the Idle Stop/Start function" later
in this section) or a malfunction has caused
the system to be deactivated, the
Idle
Stop/Start symbol is not displayed.
AUTOMATIC ENGINE
SWITCH-OFF
The Idle Stop/Start function is operational
and theIdle Stop/Start symbol is dis-
played in green in the vehicle information dis-
play, if:
•The indicator light in the ECO button is lit
green.
•The outside temperature is within the
range that is suitable for the system.
•The engine is at normal operating tem-
perature.
•The set temperature for the vehicle interior
has been reached.
•The battery is sufficiently charged.
•The system detects that the windshield is
not misted up when the air-conditioning
system is switched on.
•The hood is closed.
•The driver's door is closed and the driver's
seat belt is fastened.
If the conditions for automatic engine
switch-off are not all fulfilled, the
Idle
Stop/Start symbol is shown in yellow.
NSD620
Idle Stop/Start symbol
IDLE STOP/START SYSTEM (IF
EQUIPPED)
Starting and driving5-29

NOTE
Cruise control may be unable to maintain the
stored speed on uphill gradients. The stored
speed is resumed when the gradient evens
out. Cruise control maintains the stored
speed on downhill gradients by automati-
cally braking the vehicle.
Storing the current speed or calling up the
last stored speed:
WARNING
If you call up a stored speed and this is
different from the current speed, the ve-
hicle accelerates or brakes. If you do not
know what the stored speed is, the vehicle
may accelerate or brake unexpectedly.
There is a risk of an accident.
Take the traffic conditions into account
before calling up the stored speed. If you do
not know what the stored speed is, store
the desired speed again.
1. Briefly pull the cruise control lever to- wards you
2.
2. Remove your foot from the accelerator pedal. The first time cruise control is acti-
vated, it stores the current speed or if a
speed has previously been stored, it regu-
lates the speed of the vehicle to the pre-
viously stored speed.
Setting a speed
Bear in mind that it may take a brief moment
until the vehicle has accelerated or braked to
the set speed.
1. Press the cruise control lever up
1for a
higher speed or down
3for a lower
speed.
2. Keep the cruise control lever pressed until the desired speed is reached.
3. Release the cruise control lever, The new speed is stored.
4. To adjust the set speed in 1 MPH (1 km/h) increments: briefly press the cruise control
lever up
1or down3to the pressure
point. The last stored speed increases or
decreases in 1 MPH (1 km/h) increments.
5. To adjust the set speed in 10 MPH (10 km/h) increments: briefly press the cruise
control lever up
1or down3beyond the
pressure point. The last stored speed in-
creases or decreases in 10 MPH
(10 km/h) increments.
NOTE
Cruise control is not deactivated if you de-
press the accelerator pedal. For example, if
you accelerate briefly to overtake, cruise
control adjusts the vehicle's speed to the last
speed stored after you have finished over-
taking.
Deactivating cruise control
There are several ways to deactivate cruise
control:
•Briefly press the cruise control lever for-
ward
4.
or
•Brake.
Cruise control is automatically deactivated if:
•The vehicle is secured with the electric
parking brake.
•You are driving at less than 20 MPH (30
km/h).
•VDC intervenes or you deactivate VDC.
If cruise control is deactivated, you will hear a
warning tone. You will see the [Cruise Control
Off] message in the vehicle information dis-
play for approximately five seconds.
NOTE
The last speed stored is cleared when you
switch off the engine.
5-48Starting and driving

display. The set distance to a slower-moving
vehicle in front will then not be maintained.
You will be driving at the speed you deter-
mine by the position of the accelerator pedal.
You can also activate ICC when stationary.
The lowest speed that can be set is 20 MPH
(30 km/h).
Stopping
WARNING
•To help avoid risk of injury or death
through unintended operation of the
vehicle and/or its systems, do not leave
children, people who require the assis-
tance of others, or pets unattended in
your vehicle.
•The ICC system should only be used to
keep the vehicle stationary when the
driver is actively using the system.
When parking the vehicle, make sure to
turn OFF the ICC system, use the brake,
press the PARK (P) button, and place
the ignition switch in the LOCK position
prior to exiting the vehicle. Failure to do
so could lead to serious injury or death.
The ICC system will not hold the vehicle
in place after coming to a stop when any
of the following conditions occur: –
There is a malfunction in the system
or in the voltage supply.
– The ICC system has been deactivated
with the cruise control lever, e. g. by a
vehicle occupant.
– The accelerator pedal has been de-
pressed, e.g. by a vehicle occupant.
For further information on deactivating the
ICC system, see "ICC switch (cruise control
lever)" earlier in this section
If the ICC system detects that the vehicle in
front is stopping, it brakes your vehicle until it
is stationary (within the braking limitations of
the system).
Once your vehicle is stationary, it remains
stationary and you do not need to depress
the brake. NOTE
•After a short period, the vehicle is secured
by the electric parking brake, thus relieving
the service brake.
•Depending on the specified minimum dis-
tance, your vehicle will come to a standstill
at a sufficient distance behind the vehicle
in front. The specified minimum distance is
set using the control on the cruise control
lever.
The electric parking brake secures the vehicle
automatically if the ICC system is activated
when the vehicle is stationary and:
•A system fault occurs.
•The power supply is insufficient.
If a malfunction in the electric parking brake
occurs, then the transmission may also be
shifted into position P (Park) automatically.
Starting and driving5-55

[ICC Currently Unavailable See Operator's
Manual]:The ICC system is temporarily inop-
erative. Possible causes:
•The function is impaired due to heavy rain
or snow.
•The radar sensor system is temporarily in-
operative, e. g. due to electromagnetic ra-
diation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic
radiation.
•The system is outside the operating tem-
perature range.
•The on-board voltage is too low.
A warning tone also sounds.
Once the causes listed above no longer apply,
the display message goes out.
If the display message does not disappear:
•Pull over and stop the vehicle safely as
soon as possible, paying attention to road
and traffic conditions.
•Secure the vehicle against rolling away.
•Restart the engine. [ICC Inoperative]:
The ICC system is mal-
functioning. The adaptive brake assist func-
tion may also have failed. A warning tone also
sounds. Have the system checked. It is rec-
ommended you visit an INFINITI retailer for
this service.
[ICC Suspended]: You have depressed the
accelerator pedal. The ICC system is no lon-
ger controlling the speed of the vehicle.
The display message should disappear when
you remove your foot from the accelerator
pedal
[ICC–––MPH]: An activation condition for
the ICC system is not fulfilled.
Check the activation conditions for the ICC
system.
SYSTEM MAINTENANCE
The sensor for the ICC systemAis located
behind the INFINITI logo at the front of the
vehicle.
To keep the ICC system operating properly,
be sure to observe the following:
•Always keep area around the sensor clean.
•Do not strike or damage the areas around
the sensor. Do not touch or remove the
screw located on the sensor. Doing so
could cause failure or malfunction. If the
sensor is damaged due to an accident, it is
recommended you contact an INFINITI re-
tailer.
•Do not cover or attach stickers (including
transparent material) or install an acces-
sory near the sensor. This could cause fail-
ure or malfunction.
NSD645
5-62Starting and driving