four wheel drive INFINITI Q50 2014 User Guide

6-14In case of emergency
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 mod-
els 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 transmis-
sion. 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.

8-36Maintenance and do-it-yourself
Run-flat tires
Your vehicle is equipped with run-flat tires.
You can continue driving to a safe location
even if they are punctured. Always use run-
flat tires of the specified size on all four
wheels. Mixing tire sizes or construction
may reduce vehicle handling stability. If
necessary, contact an INFINITI retailer for
assistance.
Frequently check the tire pressure and
adjust pressure of each tire properly. The
tire pressure can be also checked in the
vehicle information display.
It can be difficult to tell if a run-flat tire is
under-inflated or flat. Check the tire
pressures as described earlier in this
section. If the tire becomes under-inflated
while driving, the low tire pressure warning
light will illuminate. If the tire becomes flat
while driving, the low tire pressure warning
light and the“Flat Tire - Visit dealer”
warning will appear.
Low tire pressure:
If the vehicle is being driven with low tire
pressure, the low tire pressure warning
light will illuminate. Flat tire:
If the vehicle is being driven with one or
more flat tires, the low tire pressure
warning light will illuminate continuously
and a chime will sound for 10 seconds. A
“ Flat Tire - Visit dealer” warning also
appears in the vehicle information display.
The chime will only sound at the first
indication of a flat tire and the warning
light will illuminate continuously. When the
flat tire warning is activated, have the
system reset and the tire checked and
replaced if necessary by an INFINITI retai-
ler. Even if the tire is inflated to the
specified COLD tire pressure, the warning
light will continue to illuminate until the
system is reset by an INFINITI retailer.
If the low tire pressure warning light
illuminates continuously and the “Flat Tire
- Visit dealer” warning appears in the
vehicle information display:
. Do not exceed 50 MPH (80 km/h).
. Increase your following distance to
allow for increased stopping distances.
. Avoid sudden maneuvers, hard corner-
ing and hard braking.WARNING
. Although you can continue driving with a
punctured run-flat tire, remember that
vehicle handling stability is reduced,
which could lead to an accident and
personal injury. Also, driving a long
distance at high speeds may damage
the tire.
. Do not drive at speeds above 50 MPH
(80 km/h) and do not drive more than
approximately 93 miles (150 km) with a
punctured run-flat tire. The actual dis-
tance the vehicle can be driven on a flat
tire depends on outside temperature,
vehicle load, road conditions and other
factors.
. Drive safely at reduced speeds. Avoid
hard cornering or braking, which may
cause you to lose control of the vehicle.
. If you detect any unusual sounds or
vibrations while driving with a punctured
run-flat tire, pull off the road to a safe
location and stop the vehicle as soon as
possible. The tire may be seriously
damaged and need to be replaced.

8-40Maintenance and do-it-yourself
warning.
. The use of retread tire is not recom-
mended.
. For additional information regarding
tires, refer to “Important Tire Safety
Information” (US) or“Tire Safety Infor-
mation” (Canada) in the Warranty Infor-
mation Booklet.
Intelligent All-Wheel Drive (AWD)
models
CAUTION
. Always use tires of the same type, size,
brand, construction (bias, bias-belted or
radial), and tread pattern on all four
wheels. Failure to do so may result in a
circumference difference between tires
on the front and rear axles which will
cause excessive tire wear and may
damage the transmission, transfer case
and differential gears.
. ONLY use spare tires specified for the
Intelligent AWD model.
If excessive tire wear is found, it is recommended that all four tires be re-
placed with tires of the same size, brand,
construction and tread pattern. The tire
pressure and wheel alignment should also
be checked and corrected as necessary.
Contact an INFINITI retailer.
Wheel balance
Unbalanced wheels may affect vehicle
handling and tire life. Even with regular
use, wheels can get out of balance. There-
fore, they should be balanced as required.
Wheel balance service should be per-
formed with the wheels off the vehicle.
Spin balancing the wheels on the vehicle
could lead to mechanical damage.
For additional information regarding tires,
refer to
“Important Tire Safety Information”
(US) or “Tire Safety Information” (Canada)
in the INFINITI Warranty Information Book-
let.
Care of wheels
See “Cleaning exterior” (P.7-2) for details
about care of the wheels.
Spare tire (TEMPORARY USE ONLY
(T-type) spare tire) (if so equipped)
When a spare tire is mounted (TEMPORARY
USE ONLY), the Tire Pressure Monitoring
System (TPMS) will not function.
Observe the following precautions if the
TEMPORARY USE ONLY spare tire must be
used, otherwise your vehicle could be
damaged or involved in an accident.
WARNING
. The TEMPORARY USE ONLY spare tire
should be used for emergency use. It
should be replaced with the standard
tire at the first opportunity to avoid
possible tire or differential damage.
. Drive carefully while the TEMPORARY
USE ONLY spare tire is installed. Avoid
sharp turns and abrupt braking while
driving.
. Periodically check spare tire inflation
pressure. Always keep the pressure of
the TEMPORARY USE ONLY spare tire at
60 psi (420 kPa, 4.2 bar). Always keep
the pressure of the full size spare tire (if
so equipped) at the recommended pres-
sure for standard tires, as indicated on

5. Insert grommets into the hole on thefascia.
6. Insert a flat-blade screwdriver into the grommet hole to add 908 turn onto the
part
*D.
7. Install the license plate bracket with screws.
STI0623
Left side
This vehicle is equipped with air deflectors
in front of the front wheels. The deflectors
will change the air flow to help improve
aerodynamic performance.
When transporting your vehicle on a trailer,
the air deflectors may interfere with a
steep slope to a trailer bed. In this case,
remove the deflectors from the undercover
of the vehicle.
1. Loosen three screws as shown and
remove the left-side air deflector
*A.
2. Tighten the removed screw
*Bin its
original position. 3. Perform the same procedure to remove
the right-side air deflector.
4. Store the two air deflectors and four screws to reinstall in the reverse order.
5. When reinstalling, make sure all six screws are firmly tightened on both air
deflectors.
Technical and consumer information9-15
REMOVING AIR DEFLECTORS

Do not tow a trailer with your
vehicle.
FLAT TOWING
Towing your vehicle with all four wheels on
the ground is sometimes called flat towing.
This method is sometimes used when
towing a vehicle behind a recreational
vehicle, such as a motor home.
CAUTION
.Failure to follow these guidelines can
result in severe transmission damage.
. Whenever flat towing your vehicle, al-
ways tow forward, never backward.
. DO NOT tow any Automatic Transmission
(AT) vehicle with all four wheels on the
ground (flat towing). Doing so WILL
DAMAGE internal transmission parts
due to lack of transmission lubrication.
. DO NOT tow any All-Wheel Drive (AWD)
vehicle with any of the wheels on the
ground. Doing so may cause serious and
expensive damage to the powertrain.
. For emergency towing procedures refer
to“Towing recommended by INFINITI”
(P.6-14).
Automatic Transmission
All-Wheel Drive (AWD) models:
Do not tow an AWD vehicle with any of the
wheels on the ground.
Two-Wheel Drive (2WD) models:
To tow a vehicle equipped with an auto-
matic transmission, an appropriate vehicle
dolly MUST be placed under the towed
vehicle’s drive wheels. Alwaysfollow the
dolly manufacturer’ s recommendations
when using their product. DOT (Department Of Transportation) Qual-
ity Grades: All passenger car tires must
conform to federal safety requirements in
addition to these grades.
Quality grades can be found where applic-
able on the tire sidewall between tread
shoulder and maximum section width. For
example:
Treadwear 200 Traction AA Temperature A
TREADWEAR
The treadwear grade is a comparative
rating based on the wear rate of the tire
when tested under controlled conditions
on a specified government test course. For
example, a tire graded 150 would wear one
and one-half (1 1/2) times as well on the
government course as a tire graded 100.
The relative performance of tires depends
upon actual conditions of their use, how-
ever, and may depart significantly from the
norm due to variations in driving habits,
service practices and differences in road
characteristics and climate.
Technical and consumer information9-19
TOWING A TRAILER
UNIFORM TIRE QUALITY GRADING