2009 JAGUAR XF tyre pressures

Introduction
10

Warning labels
Labels are attached to your vehicle at several
positions. These are applied to draw your
attention to important subjects, e.g. tyre
pressures, tow bar use, airbags, roll-over risk,
engine compartment hazards, etc.
Additional information labels may also be
found at these locations.
1. Left-hand front suspension tower - Air
conditioning label
2. Top face of battery - Battery warning
symbols
3. End of fascia (passenger side) -
Passenger airbag label
4. Sun visor - Airbag label
5. Base of left-hand C p illar - Tyre pressure
label, Airbag warn ing label, Vehicle
Identification Number label
6. Right-hand B pillar - Vehicle
Identification Number label (China)
7. Inner face of fuel filler flap - Fuel
specification label It is important that you are familiar with these
subjects to ensure that your vehicle and its
features are used safely. Using the index at the
back of this handbook, re
fer to the relevant
topic for more information.
HEALTH AND SAFETY
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WARNINGS
The vehicle should not be parked over
long dry grass or other combustible
material, particul arly during dry
weather. As the heat ge nerated by the exhaust
and emission control systems may be
sufficient to start a fire.
Before exiting the vehicle, ensure that
P park is selected and the park brake
applied. When exiting the vehicle,
ensure that the Jaguar Smart Key is removed
from the vehicle.

155
Driving hints

ECONOMICAL DRIVING
There are two main factors which influence fuel
economy, the way the vehicle is driven and
maintenance.
Driving tips for economy
•Avoid unnecessary jour neys, especially
short stop-start trips.
• Accelerate smoothly and gently from a
stand still.
• Allow time to brake gently and smoothly.
• Be aware of traffic and road conditions
ahead, and take action in time to avoid
hard braking or acceleration.
• When stationary apply the park brake, and
select neutral.
• Turn off the air conditioning when not
needed.
Maintenance and fuel economy
Regular servicing by a Dealer/Authorised
Repairer, along with regular checks by the
driver are essential fo r vehicle longevity and
fuel economy.
The condition of the engine (oils, filters, spark
plugs, settings etc.) tyre pressures, and wheel
alignment, will all have a bearing on fuel
economy. For this reason it is essential that the
vehicle is checked regularly by the driver and
serviced by an approved Dealer/Authorised
Repairer at the correct intervals.
Note: If you are in any doubt about the
maintenance requirement s, intervals, or
checks required, contact your Dealer/
Authorised Repairer for advice.

185
Towing

RECOMMENDED TOWING WEIGHTS
Nose/tongue weight must be the greater of
50 kg (110 lbs) or 7% of the actual trailer
weight, up to the maximum tow hitch load.
Nose/tongue weight can be measured using a
proprietary brand of nose weight indicator.
If it is necessary to increase the nose/tongue
weight up to the maximu m allowed, the vehicle
load should be reduced accordingly. This
ensures that the Gross Vehicle Weight (GVW),
and maximum rear axle load, are not exceeded.
Note: When towing the maximum permissible
gross vehicle weight can be increased by a
maximum of 100 kg (220 lb.) provided that the
road speed is limited to 100 km/h (60 mph).
Note: When calculating rear axle loading,
remember that the trailer nose/tongue weight,
the load in the vehicle's luggage area and the
weight of rear seat pa ssengers must all be
added together.
Towing weights - Australia only
The weight of a traile r must not exceed 1.5
times the towing vehicle’s weight. The
nose/tongue weight must be a minimum of 7%
of gross caravan/trai ler weight, up to a
maximum of 350 kg (722 lbs).
ESSENTIAL TOWING CHECKS
• The trailer should be parallel to the ground
when loaded and connected to the vehicle.
• When calculating the laden weight of the
trailer remember to include the weight of
the trailer, plus the weight of the load.
• If the load can be divided between the
vehicle and trailer, loading more weight
into the vehicle will generally improve
stability. Do not exceed the vehicle's
weight limits. See WEIGHTS (page 259).
• Ensure that all applic able regulations and
legislation are complied with when loading
and towing a trailer.
• Increase rear tyre pressures of the towing
vehicle to those for maximum vehicle
loading conditions.
• Ensure trailer tyre pressures are set to
trailer manufacturer' s recommendations.
• If the vehicle is loaded to maximum Gross
Vehicle Weight (GVW) the nose weight is
limited (see Towi ng weights table).
• Ensure that a suitable breakaway cable or
secondary coupling is used. Refer to the
trailer manufacturer' s instructions for
guidance.
• Ensure that the tow ball is secure.
• Check the operation of all trailer lights.
Maximum permissible
towing weights
Unbraked trailers 750 kg (1653 lb.) Trailers with
overrun brakes 1850 kg (4080 lb.)
Nose/Tongue weight 75 kg (165 lb.)
WARNING
Do not exceed the Gross Vehicle
Weight (GVW), m aximum rear axle
weight, maximum trailer weight, or
nose/tongue weight. Exceeding any of these
limits could cause inst ability and loss of
control. See WEIGHTS (page 259).
WARNING
Do not loop the breakaway cable over
the tow ball as it may slide off.

193
Maintenance

Weekly checks
•Engine oil level (non- electronic dipstick
vehicles). See ENGINE OIL CHECK - V6
Petrol engines (page 197).
• Engine coolant check. See ENGINE
COOLANT CHECK (page 204).
• Brake fluid level. See BRAKE FLUID
CHECK (page 206).
• Power steering fluid level. See POWER
STEERING FLUID CHECK (page 208).
• Screen washer fluid level. See WASHER
FLUID CHECK (page 209).
• Tyre pressures and condition. See TYRE
CARE (page 217).
• Operate air conditioning. See AUTOMATIC
CLIMATE CONTROL (page 116).
Note: The engine oil level on V6 petrol engines,
should be checked more frequently if the
vehicle is driven for prolonged periods at high
speeds. The engine oil level on diesel and V8
petrol engines is checked automatically at all
times by the electronic dipstick.
Severe driving conditions
When a vehicle is operated in severe
conditions, more frequent attention must be
paid to servicing requirements.
Severe driving conditions include:
• Driving in dusty and/or sandy conditions.
• Driving on rough and/or muddy roads
and/or wading. •
Driving in extremely hot or cold
conditions.
• Driving in areas using road salt or other
corrosive materials.
• Towing a trailer or driving in mountainous
conditions.
Contact your Dealer/Authorised Repairer for
advice.
Emission control
Your vehicle is fitted with various items of
emission and evaporati ve control equipment,
designed to meet specific territorial
requirements. You should be aware that
unauthorised replacemen t, modification or
tampering with this equipment by an owner or
repair shop, may be unlawful and subject to
legal penalties.
In addition, engine se ttings must not be
tampered with. These have been established to
ensure that your vehicle complies with
stringent exhaust em ission regulations.
Incorrect engine settings may adversely affect
exhaust emissi ons, engine performance and
fuel consumption. The y may also cause high
temperatures, which will result in damage to
the catalytic converter and the vehicle.
Road testing dynamometers (rolling
roads)
Because your vehicle is equipped with anti-lock
brakes, it is essential that any dynamometer
testing is carried out only by a qualified person,
familiar with the dynamometer testing and
safety procedures practised by
Dealers/Authorised Repairers.
CAUTION
Ensure that you take notice of any
message centre information and
warnings relating to engi ne oil level (V8 petrol
and diesel engines only). Top-up the level
when advised to do so. See ENGINE OIL
CHECK - V8 Petrol engines (page 199).

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Wheels and tyres

11.Wear rate indicator. A tyre rated at 400 for
example, will last twice as long as a tyre
rated at 200.
12. The traction rating grades a tyres
performance when stopping on a wet road
surface. The higher the grade the better the
braking performance. The grades from
highest to lowest are, AA, A, B, and C.
13. The maximum load which can be carried
by the tyre.
14. Heat resistance grading. The tyre's
resistance to heat is grade A, B, or C, with
A indicating the greatest resistance to heat.
This grading is provided for a correctly
inflated tyre, which is being used within its
speed and loading limits.
15. The maximum inflation pressure for the
tyre. This pressure should not be used for
normal driving.
† Speed ratings
TYRE CARE
Tyre pressures
Rating Speed km/h (mph)
Q 160 (99)
R 170 (106)S 180 (112)
T 190 (118)
U 200 (124)
H 210 (130)
V 240 (149)
W 270 (168) Y 300 (186)
WARNINGS
Defective tyres are dangerous. Do not
drive the vehicle if a tyre is damaged,
excessively worn, or incorrectly
inflated. Doing so may lead to premature tyre
failure.
Avoid contaminating the tyres with
vehicle fluids as they may cause
damage to the tyre.
Avoid spinning the wh eels. The forces
released can damage the structure of
the tyre and cause it to fail. Doing so
may lead to premature tyre failure.
If wheel spin is unavoidable due to a
loss of traction (i n deep snow, for
example), do not exceed the 50 km/h
(30 mph) point on the speedometer. Doing so
may lead to premature tyre failure.
Do not exceed the maximum pressure
stated on the sidewall of the tyre.
Over-inflation could cause the tyre to
fail suddenly.
WARNINGS
Never drive your vehicle if the tyre
pressures are incorrect.
Under-inflation causes excessive
flexing and uneven tyre we ar. This can lead to
sudden tyre failure. Ov er-inflation causes a
harsh ride, uneven tyre wear and poor
handling.
Pressure checks should only be
carried out when the tyres are cold,
and the vehicle has been stationary
for more than three hours. A hot tyre at or
below recommended cold inflation pressure is
dangerously under-inflated.

Wheels and tyres
218

All of the vehicle's tyres (including the spare)
should be checked regularly for damage, wear
and distortion. If you are in any doubt about the
condition of a tyre, have it checked immediately
by a tyre repair centre or your
Dealer/Authorised repairer.
Checking the tyre pressures
The recommended tyre pressures are listed on
a placard label fixed to the end of the left-hand
side door. These pressures provide optimum
ride and handling charac teristics for all normal
operating conditions.
If winter tyres are fitted, please refer to the
winter tyre pressure information. SeeUSING
WINTER TYRES (page 223).
In the interest of safe ty, reliability and fuel
efficiency, check the tyres, including the spare,
for condition and pressu re on a weekly basis
and before long journeys.
Do not check tyre pressures immediately after
the vehicle has travelled in excess of 1.6 km
(1.0 mile). Tyre temperatures and pressures
increase when running. Deflating a warm tyre
to the recommended pressure will result in
under-inflation.
If tyre pressures are checked while the vehicle
is inside a protected covered area, e.g. a
garage, and subsequent ly driven in lower
outdoor temperatures, tyre under-inflation
could occur.
A slight pressure loss occurs naturally with
time. If this exceeds 0.14 bar (2 lbf/in², 14 kPa,)
per week, have the cause investigated and
rectified by qualified assistance.
Tyre pressures (including the spare) should be
checked at least once a week with normal
on-road use, but should be checked daily if the
vehicle is used off-road. Always check the tyre
pressures before setti ng off on a long journey.
If it is necessary to check tyre pressures when
the tyres are warm, you should expect the
pressures to have increased by up to
0.3-0.4 bar (4-6 lbf/in², 30-40 kpa). Do not
reduce the tyre pressures to the cold inflation
pressure under these circumstances. Allow the
tyres to cool fully before adjusting the
pressures.
If the vehicle has been parked in
strong sunlight, or used in high
ambient temperatures do not reduce
the tyre pressures. move the vehicle into the
shade and allow the tyres to cool before
re-checking the pressures.
WARNING
Tyre pressures should be checked
regularly using an accurate pressure
gauge, when the tyres are cold.
Failure to properly maintain your tyre
pressures could increase the risk of tyre failure
resulting in loss of vehicle control and
personal injury.
WARNINGS
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219
Wheels and tyres

The following procedure should be used to
check and adjust the tyres pressures.
1.Remove the valve cap.
2. Firmly attach a tyre pressure gauge/inflator
to the valve.
3. Read the tyre pressure from the gauge,
and add air if required.
4. If air is added to the tyre, remove the gauge
and re-attach it be fore reading the
pressure. Failure to do so may result in an
inaccurate reading.
5. If the tyre pressure is too high, remove the
gauge and allow air out of the tyre by
pressing the centre of the valve. Refit the
gauge to the valve and check the pressure.
6. Repeat the process a dding or removing air
as required until the correct tyre pressure
is reached.
7. Refit the valve cap.
Note: It is an offence in certain countries to
drive a vehicle with incorrect tyre pressures.
Note: It is the driver's responsibility to ensure
that the tyre pressures are correct.
Tyre valves
Keep the valve caps screwed down firmly to
prevent water or dirt entering the valve. Check
the valves for leaks when checking the tyre
pressures.
Pressure compensation for ambient
temperature changes
If the intended journey will take the vehicle into
an area where the ambien t local temperature is
known to be lower than the journey start point,
tyre pressure under-i nflation could occur. A colder ambient local temperature will reduce
pressure within the tyre. An effect is to
decrease sidewall height
and to increase tyre
shoulder wear with the potential for tyre failure.
Vehicle dynamics could also be adversely
affected.
In order to minimise this effect, tyre pressures
can be adjusted to compensate before the start
of the journey. Alternatively, tyre pressures can
be adjusted when the area of lower ambient
temperature is reached.
In this situation, the vehicle must be left in the
ambient local temperature for a least one hour
before tyre pressu re is adjusted.
To compensate for colder ambient
temperatures, tyre pressures should be
increased by 0.14 bar (2lbf/in², 14 kPa) for
each 10°C (20°F) decrease.
Note: Ensure that correct tyre pressures are
maintained when moving to areas of differing
ambient temperature.
The Tyre Pressure M onitoring system (TPM
system) may issue a warning if the
under-inflation becomes significant. When
driving through variable climatic conditions the
TPM system warnings may be intermittent.
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Wheels and tyres
220

Tyre pressure compensation chart - high
ambient temperatures
Tyre pressures during long term vehicle
storage
To minimise the possibility and effects of flat
spots during storage, the tyres may be inflated
to the maximum pressure indicated on the tyre
wall.
Note: Before using the st ored vehicle on the
road again, ensure that correct tyre pressures
are restored.
Flat spots
If the vehicle is stati onary for a long period,
when the ambient temperature is high, the
tyres may form flat spots. When the vehicle is
driven, these flat spots will cause a vibration
which will steadily disappear as the tyres warm
up and regain their original shape. In order to minimise flat spotting, the tyre
pressures can be increa
sed. Tyre pressures
should be increased by 0.14 bar/14 kPa (2
lbf/in²) for each 10°C (20°F) temperature
increase above 20°C (68°F)
Long term storage
Flat spotting can be minimised during long
term storage, by increasing the tyre pressures
to the maximum indicated on the tyre sidewall.
Note: The tyre pressures s hould be reduced to
the correct pressure before the vehicle is
driven.
Tyre wear
Good driving practise will improve the mileage
you obtain from your tyres, and avoid
unnecessary damage.
• Always ensure that the tyre pressures are
correctly adjusted.
• Always observe the posted speed limits,
and advisory speeds for bends.
• Avoid pulling away quickly, or hard
acceleration.
• Avoid making fast turns or braking
sharply.
• Wherever possible, avoid potholes, or
obstacles on the road.
• Do not drive up kerbs, or rub the tyres
against them when parking.
Tyre pressure temperature compensation
Ambient
temperature -
°C (°F) Pressure
compensation -
bar (lbf/in², kPa)
20 (68) use placard label
30 (86) + 0.14 (2, 14)
40 (104) + 0.28 (4, 28)
50 (122) + 0.41 (6, 41)
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