2018 INFINITI Q50 transmission

5-126Starting and driving
SD1006MA
WARNING
.Do not stop or park the vehicle over
flammable materials such as dry
grass, waste paper or rags. They
may ignite and cause a fire.
. Never leave the engine running while
the vehicle is unattended.
. Do not leave children unattended
inside the vehicle. They could un-
knowingly activate switches or con-
trols. Unattended children could
become involved in serious accidents. .
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
assistance of others or pets unat-
tended in your vehicle. Additionally,
the temperature inside a closed ve-
hicle on a warm day can quickly
become high enough to cause a sig-
nificant risk of injury or death to
people and pets.
. Safe parking procedures require that
both the parking brake be applied
and the transmission placed into P
(Park). Failure to do so could cause the vehicle to move unexpectedly or
roll away and result in an accident.
. Make sure the automatic transmis-
sion shift lever has been pushed as far
forward as it can go and cannot be
moved without depressing the foot
brake pedal.
1. Firmly apply the parking brake.
2. Move the shift lever to the P (Park) position.
3. To help prevent the vehicle from rolling into the street when parked on a sloping
drive way, it is a good practice to turn the
wheels as illustrated.
.HEADED DOWNHILL WITH CURB:
Turn the wheels into the curb and
move the vehicle forward until the
curb side wheel gently touches the
curb.
.HEADED UPHILL WITH CURB:
Turn the wheels away from the curb
and move the vehicle back until the
curb side wheel gently touches the
curb.
.HEADED UPHILL OR DOWNHILL,
NO CURB:
Turn the wheels toward the side of
the road so the vehicle will move away
from the center of the road if it
PARKING/PARKING ON HILLS

5-136Starting and driving
WARNING
.Never rely solely on the hill start
assist system to prevent the vehicle
from moving backward on a hill.
Always drive carefully and atten-
tively. Depress the brake pedal when
the vehicle is stopped on a steep hill.
Be especially careful when stopped
on a hill on frozen or muddy roads.
Failure to prevent the vehicle from
rolling backwards may result in a loss
of control of the vehicle and possible
serious injury or death.
. The hill start assist system is not
designed to hold the vehicle at a
standstill on a hill. Depress the brake
pedal when the vehicle is stopped on
a steep hill. Failure to do so may
cause the vehicle to roll backwards
and may result in a collision or serious
personal injury.
. The hill start assist system may not
prevent the vehicle from rolling back-
wards on a hill under all load or road
conditions. Always be prepared to
depress the brake pedal to prevent
the vehicle from rolling backwards.
Failure to do so may result in a
collision or serious personal injury. The hill start assist system automatically
keeps the brakes applied to help prevent the
vehicle from rolling backwards in the time it
takes the driver to release the brake pedal
and apply the accelerator when the vehicle is
stopped on a hill.
The hill start assist system will operate
automatically under the following condi-
tions:
.
The transmission is shifted to a forward
or reverse gear.
. The vehicle is stopped completely on a hill
by applying the brake.
The maximum holding time is 2 seconds.
After 2 seconds the vehicle will begin to roll
back and the hill start assist system will stop
operating completely.
The hill start assist system will not operate
when the transmission is shifted to the N
(Neutral) or P (Park) position or on a flat and
level road. The chassis control is an electric control
module that includes the following func-
tions:
.
Log-in function (See “Log-in function”
(P.3-16).)
. INFINITI Drive Mode Selector (See
“INFINITI Drive Mode Selector” (P.5-
22).)
. Active Lane Control (if so equipped) (See
“Active Lane Control” (P.5-26).)
. Active Trace Control (See “Active trace
control” (P.5-134).)
HILL START ASSIST SYSTEM CHASSIS CONTROL

5. Raise the hood to warn other traffic, andto signal professional road assistance
personnel that you need assistance.
6. Have all passengers get out of the vehicle and stand in a safe place, away
from traffic and clear of the vehicle.
WARNING
.Make sure the parking brake is
securely applied and the automatic
transmission into P (Park).
. Never change tires when the vehicle
is on a slope, ice or slippery areas.
This is hazardous.
. Never change tires if oncoming traf-
fic is close to your vehicle. Wait for
professional road assistance.
MCE0001A
Blocking wheels
Place suitable blocksat both the front and
back of the wheel diagonally opposite the
flat tire to prevent the vehicle from moving
when it is jacked up.
WARNING
Be sure to block the wheel as the vehicle
may move and result in personal injury.
JVE0105X
Jacking tools
In case of emergency6-5

6-16In case of emergency
INFINITI retailer.Do not attempt to start the engine by
pushing.
CAUTION
.
Automatic Transmission (AT) models
cannot be push-started or tow-
started. Attempting to do so may
cause transmission damage.
. Three-way catalyst equipped models
should not be started by pushing
since the three-way catalyst may be
damaged.
. Never try to start the vehicle by
towing it; when the engine starts,
the forward surge could cause the
vehicle to collide with the tow vehi-
cle.
CAUTION
.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 cap while
the engine is still hot. When the
radiator cap is removed, pressurized
hot water will spurt out, possibly
causing serious injury.
. Do not open the hood if steam is
coming out.
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
shift lever to the P (Park) position.
Do not stop the engine.
2. Turn off the climate control. 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 climb- ing a long hill on a hot day, run the engine
PUSH STARTING IF YOUR VEHICLE OVERHEATS

at a fast idle (approximately 1,500 rpm)
until the temperature 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 be seen.
5. Open the engine hood.
WARNING
If steam or water is coming from the
engine, stand clear to prevent getting
burned.
6. Visually check drive belts for damage or looseness. Also check if the cooling fan is
running. The radiator hoses and radiator
should not leak water. If coolant is
leaking or the cooling fan does not run,
stop the engine.
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.
7. After the engine cools down, check the coolant level in the reservoir tank with
the engine running. Add coolant to the
reservoir tank if necessary. Have your
vehicle repaired. It is recommended you
visit an INFINITI retailer for this service. When towing your vehicle, all State (Pro-
vincial in Canada) and local regulations for
towing must be followed. Incorrect towing
equipment could damage your vehicle. Tow-
ing instructions are available from an
INFINITI retailer. Local service operators
are familiar with the applicable laws and
procedures for towing. To assure proper
towing and to prevent accidental damage to
your vehicle, INFINITI recommends that you
have a service operator tow your vehicle. It is
advisable to have the service operator care-
fully read the following precautions.
WARNING
.
Never ride in a vehicle that is being
towed.
. Never get under your vehicle after it
has been lifted by a tow truck.
CAUTION
.When towing, make sure that the
transmission, axles, steering system
and powertrain are in working con-
dition. If any unit is damaged, dollies
must be used.
. Always attach safety chains before
In case of emergency6-17
TOWING YOUR VEHICLE

6-18In case of emergency
towing.
For information about towing your vehicle
behind a recreational vehicle (RV), see “Flat
towing” (P.10-22) of this manual.
SCE0788
Two-Wheel Drive (2WD) models
TOWING RECOMMENDED BY
INFINITI
Two-Wheel Drive (2WD) models
INFINITI recommends that your vehicle be
towed with the driving (rear) wheels off the
ground or place the vehicle on a flat bed
truck as illustrated.
CAUTION
. Never tow automatic transmission
models with the rear wheels on the
ground or four wheels on the ground (forward or backward), as this may
cause serious and expensive damage
to the transmission. If it is necessary
to tow the vehicle with the front
wheels raised, always use towing
dollies under the rear wheels.
. When towing rear wheel drive models
with the front wheels on the ground
or on towing dollies: Push the ignition
switch to the ACC or ON position,
and secure the steering wheel in a
straight-ahead position with a rope
or similar device.

8 Do-it-yourself
Maintenance precautions ................................................ 8-3
Engine compartment check locations .......................... 8-4VR30DDTT engine....................................................... 8-4
2.0L turbo gasoline engine........................................ 8-5
Engine cooling system (for VR30DDTT
engine models).................................................................... 8-6
Checking engine coolant level ................................. 8-7
Changing engine coolant............................................ 8-7
Engine cooling system (for 2.0L turbo gasoline
engine models).................................................................... 8-8
Checking engine coolant level................................... 8-8
Changing engine coolant............................................ 8-9
Intercooler cooling system (for VR30DDTT
engine models).................................................................... 8-9 Checking intercooler coolant level........................ 8-10
Changing intercooler coolant................................. 8-10
Engine oil.....................................................................\
...... 8-10 Checking engine oil level .......................................... 8-11
Changing engine oil and filter................................. 8-11
Automatic Transmission Fluid (ATF).......................... 8-13
Power steering fluid (models with hydraulic pump
electric power steering).................................................. 8-14
Brake fluid...................................................................\
....... 8-14
Window washer fluid...................................................... 8-15 Battery........................................................................\
........ 8-16
Main battery location.............................................. 8-16
Auxiliary battery location (for 2.0L turbo
gasoline engine models).......................................... 8-17
Checking battery fluid level................................... 8-17
Jump starting............................................................. 8-18
Variable voltage control system ................................. 8-19
Drive belts ........................................................................\
. 8-19
Spark plugs....................................................................... 8-20 Replacing spark plugs............................................. 8-20
Air cleaner........................................................................\
.. 8-21
Windshield wiper blades ............................................... 8-21 Cleaning....................................................................... 8-21
Replacing..................................................................... 8-22
Brakes..................................................................\
............... 8-22 Self-adjusting brakes............................................... 8-22
Brake pad wear warning........................................ 8-22
Fuses...................................................................\
................ 8-23 Engine compartment.............................................. 8-24
Passenger compartment ........................................ 8-25
Intelligent Key battery replacement........................... 8-26
Lights........................................................................\
......... 8-28 Headlights................................................................... 8-29
Exterior and interior lights..................................... 8-29

When performing any inspection or main-
tenance work on your vehicle, always take
care to prevent serious accidental injury to
yourself 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 moving. Move the shift
lever to P (Park).
. Be sure the ignition switch is in the
OFF or LOCK position when per-
forming any parts replacement or
repairs.
. Never connect or disconnect the
battery or any transistorized compo-
nent while the ignition switch is in the
ON position.
. Never leave the engine or automatic
transmission related component har-
nesses disconnected while the igni-
tion switch is in the ON position.
. If you must work with the engine
running, 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 remove any
jewelry, such as rings, watches, etc.
before working on your vehicle.
. Always wear eye protection when-
ever you work 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 only by a jack. If it is
necessary to work under the vehicle,
support it with safety stands.
. Keep smoking materials, flame and
sparks away from fuel tank and the
battery.
. Your vehicle is equipped with an
automatic engine cooling fan. It may
come on at any time without warn-
ing, even if the ignition key is in the
OFF position and the engine is not
running. To avoid injury, always dis-
connect the negative battery cable
before working near the fan.
. Because the fuel lines are under high
pressure even when the engine is off,
it is recommended you visit an
INFINITI retailer for service of the fuel filter or fuel lines.
CAUTION
.
Do not work under the hood while the
engine is hot. Turn the engine off and
wait until it cools down.
. Avoid direct contact with used en-
gine oil and coolant. Improperly dis-
posed engine oil, coolant, and/or
other vehicle fluids can damage the
environment. Always conform to lo-
cal regulations for disposal of vehicle
fluid.
This “8. Do-it-yourself” section gives in-
structions regarding only those items which
are relatively easy for an owner to perform.
A genuine INFINITI Service Manual is also
available. (See “Owner’s Manual/Service
Manual order information” (P.10-26).)
You should be aware that incomplete or
improper servicing may result in operating
difficulties or excessive emissions, and could
affect your warranty coverage. If in doubt
about any servicing, it is recommended you
have it done by an INFINITI retailer.
Do-it-yourself8-3
MAINTENANCE PRECAUTIONS