2009 JAGUAR XF engine

Fuel and refuelling
176

Methyl Tertiary Butyl Ether (MTBE)
Unleaded fuel containing an oxygenate known
as MTBE can be used provided that the ratio of
MTBE to conventional fuel does not exceed
15%. MTBE is an Ether based compound
derived from Petroleum, which has been
specified by several refiners as the substance
to enhance the Octane rating of fuel.
Reformulated gasoline
Several petroleum comp anies have announced
the availability of reformulated fuels. These
fuels are specially formulated to further reduce
vehicle emissions. Jagua r fully supports all
efforts to protect and maintain ambient air
quality and encourages the use of reformulated
gasoline, where available.
DIESEL ENGINED VEHICLES
Use only high quality diesel fuel according to
EN590 or equivalent.
The quality of diesel fu el is variable, depending
on geographic location . Always use premium
or the highest quality fuel available in your
locality. High quality fuel ensures a longer life
for your engine components. Lower grade fuel
contains higher levels of sulphur, which is
detrimental to engine components. If low
quality fuel is used, light coloured smoke may
be evident at the exhaust.
Note: Jaguar vehicles ar e capable of running
with up to a 5% blend of bio-diesel, in
accordance with European Standard EN590. Prolonged use of additives is not
recommended. Do not add paraffin or petrol to
diesel fuels.
Winter grade diesel fuel
To make sure of relia
ble diesel engine
operation during cold seasonal periods, Winter
grade fuel must be used . This fuel is normally
available from fuel retailers during these
periods and the fuel companies adjust the fuel
quality to suit climatic conditions.
If the vehicle is not filled with Winter grade
diesel fuel, it is recommended that the engine
is idled for a period of over two minutes after
starting, to prevent fuel solidification during
operation.CAUTION
Do not use RME (bio-d iesel) except in
the case of those propr ietary diesel fuels
which contain a mix of up to 5%. Jaguar can
accept no responsibility for damage caused by
using RME in concentrat ions greater than 5%.
CAUTIONS
If you inadvertently fill your vehicle with
petrol instead of di esel, do not attempt
to start the engine. Contact your Dealer/
Authorised Repairer im mediately. Attempting
to start the engine with petrol in the fuel tank,
will cause extensive dama ge to the engine and
fuel system, which will not be covered by your
Jaguar warranty.
Jaguar cars can ac cept no responsibility
for any damage caused by running your
vehicle with petrol or ve getable oil in the fuel
tank.

177
Fuel and refuelling

Sulphur content
In some countries diesel may contain higher
levers of Sulphur, wh ich could cause damage
to the vehicle, if in doubt contact a local
Dealer/Authorised Repairer for advice.
RUNNING OUT OF FUEL
Note: If the vehicle does run out of fuel, a
minimum of 4 litres (0.9 gallons) will be
required to restart the engine. The vehicle will
need to be driven 1.6-5 km (1-3 miles) in order
to reset the engine management and
monitoring systems.
Note: If the vehicle does run out of fuel,
seeking qualified assistance is advisable.
Diesel engines
Vehicles with diesel e ngines are equipped with
a system to prevent the fuel tank from
emptying completely. When the fuel reaches a
minimum level, the system will activate a
reduced power mode (i.e . the engine will not
run properly). This will be followed by the
engine stopping in a pproximately 1.6 km
(1 mile). This feature prevents the fuel system from
running dry, which could cause damage to the
vehicle. If the gauge indicates low fuel or the
warning indicator illumi
nates, the fuel tank
should be refuelled as soon as possible at the
next filling stat ion, with at least 4 litres (0.9
gallons) of fuel.
If the system protection function has activated,
the vehicle must firstly be refuelled, then
restarted using the following procedure:
1. With the brake pedal pressed, press and
hold the engine START/STOP button and
crank the engine for five seconds.
2. Release the START/STOP button.
3. With the brake pedal pressed, press and
release the START/STOP button to crank
the engine. The engine should start within
approximately five seconds.
Note: If the engine does not start, pause for ten
seconds with the ignition in convenience
mode, before re peating the procedure from the
beginning.
FUEL CUT-OFF
The fuel system cut-off forms part of the
Supplementary Restraint System (SRS) fitted
to your vehicle. Following an impact, and
depending on the severity , the fuel pump may
be switched off.
CAUTION
Your vehicle is fitted with a Diesel
Particulate Filter (DPF), the maximum
Sulphur content must not exceed 0.005%.
Using an incorrect fuel will cause serious
damage to the DPF. See DIESEL
PARTICULATE FILTER (DPF) (page 135).
CAUTION
Avoid running out of fuel. Doing so can
cause damage to th e vehicle's engine,
fuel and emission control systems.
CAUTION
Do not crank the engine for longer than
30 seconds, or damage to the fuel pump
may occur.

Fuel and refuelling
178

Resetting the fuel cut-off
1.Switch the ignition off and wait for one
minute.
2. Turn the ignition on for 30 seconds.
3. Check the vehicle thor oughly for fuel leaks.
If a leak is detected switch the ignition off
immediately.
• Do not start the vehicle if a leak is
present. Seek qualified advice and have
the vehicle recovered.
4. If no leaks are detected, start the vehicle.
FUEL FILLER FLAP
Note: The fuel filler flap cannot be opened
when the alarm system is armed.
The fuel filler flap is located on the right-hand
side of the vehicle, at the rear.
1. Ensure that the vehicle is fully unlocked.
Push and release the rear of the flap (in the
area indicated in the illustration) to
unlatch.
2. Pull the fuel filler flap open. The label on
the inside of the flap indicates the correct
fuel for the vehicle. 3.
Twist the cap counte r-clockwise to undo.
4. Stow the cap on the lip provided on the top
of the hinge arm, as shown.
When replacing the cap, turn it clockwise until
the ratchet clicks. Failur e to do so could cause
the Engine malfunction warning indicator to
illuminate.
To close the filler flap, pus h the flap closed until
it latches.
WARNING
The fuel cut-off should never be reset
if you can smell fuel, or a leak can be
seen. Doing so can lead to a fire
which may cause persona l injury or death.
WARNINGS
Open the fuel filler cap slowly and
allow the pressure to release before
fully removing the cap to avoid fuel
spillage due to rapid expansion.
Take note of all warnings and
instructions given on the label affixed
to the inside of the fi ller flap. Failure to
do so may result in injury or death.
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179
Fuel and refuelling

REFUELLING
Fuel filler
Filling station pumps used for diesel
commercial vehicles deliver fuel at a higher
rate than normal. The hi gher fill rate can cause
premature cut-off and ma y cause fuel spillage.
Therefore, it is recommended that only
standard light vehicle pumps are used. If the fuel cuts off as soon as the trigger on the
pump is operated, check that the correct fuel
has been selected. Immediate cut-off may have
been caused by the fuel guard system.
See
DIESEL MISFUELLING PROTECTION
DEVICE (page 180).
Fuel tank capacity
Avoid the risk of running out of fuel and never
intentionally drive the vehicle when the fuel
gauge indicates that the tank is empty. When
refuelling your vehicle after the fuel gauge
reads empty, you may not be able to add the
fuel quantity shown below, as there will be a
small reserve remaining in the tank.
All engines
WARNINGS
When refuelling ensure that all
windows, doors, and sunroof are fully
closed, particularly if young children
or animals are in the vehicle. Fuel vapour
contains harmful chemical compounds, some
of which may cause cancer.
Do not attempt to fill the tank to its
maximum capacity. If the vehicle is to
be parked on a slope, in direct
sunlight or high ambient temperature,
expansion of the fuel could cause spillage.
Filling station pumps are equipped with
automatic cut-off sensing, to avoid fuel
spillage. Fill the tank unt il the filler nozzle
automatically cuts off supply. Do not attempt
to fill the tank beyond this point.
CAUTIONS
Check the fuel pump information
carefully, to ensure that you are putting
the correct fuel into the vehicle. Filling a
vehicle with the incorrect fuel can cause
serious engine and fu el system damage.
It is the driver’s responsibility to fill the
vehicle with the correct fuel. If the
vehicle is filled with the wrong type of fuel, do
not start the engine. Call for Roadside
Assistance.
Fuel specification:
Petrol 95-98 RON
Diesel EN 590
Total tank capacity:
Petrol 69.5 litres
(15.3 gallons)
Diesel 68.1 litres
(15 gallons)
Fill capacity (when fuel gauge
indicates empty) 64 litres
(14.1 gallons)
Reserve capacity (when fuel
gauge indicates empty) 5.5 litres
(1.2 gallons)
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Fuel and refuelling
180

DIESEL MISFUELLING PROTECTION
DEVICE
Diesel engine vehicles in some markets are
equipped with a misfuelling protection device,
incorporated into the fuel filler neck, designed
to alert that the wrong fuel type has been
selected. If the narrow filler nozzle fitted to
pumps delivering unleaded petrol is correctly
inserted (i.e. fully inserted) into the filler neck,
the misfuel protection de vice will activate.
The protection device c ontinually interrupts the
fuel flow from the pump, until the protector
mechanism in the filler neck is reset.
When activated, the yellow protection device
will be visible in the f iller neck. The device will
need to be reset before the tank can be
correctly filled with dies el fuel. This is achieved
using the reset tool, lo cated in the luggage
compartment, clipped onto the battery
restraining bar.
Note: It is the driver’s responsibility to fill the
vehicle with the correct fuel. The diesel
misfuelling protection devi ce only reduces the
risk of filling the vehicle with the incorrect fuel.
Note: When refuelling the vehicle using a
disposable fuel canister, use a canister
designed for diesel fuel where possible. The
spout on petrol canist ers may activate the
protection device. The device may also be
activated by fuel pumps with a smaller nozzle
than those fitted to standard diesel pumps.
Resetting the protection device
To reset the misfuelling protection device:
1. Insert the reset tool (with the teeth
uppermost) into the fi ller neck opening, as
far as it will go. The triangular section on
the reset tool stop s on the protection
device at the requi red insertion depth.
2. Pivot the reset tool handle downwards to
engage the teeth into the protection device.
3. Keeping the reset tool handle held down,
slowly pull the reset tool out of the filler
neck to reset the misfuelling protection
device.
Note: To ensure that the pr otection device is
correctly reset, check that the yellow protector
is no longer visible in the filler neck.
After resetting the misfuelling protection
device, remove the tool fr om the filler neck and
secure it to the battery restraining bar. If
subsequent driveability difficulties are
encountered, seek assistance from your
Dealer/Authorised Repairer.
WARNINGS
When the misfuelling protection
device is activated, it could cause fuel
to be discharged from the filler neck.
CAUTIONS
Using the incorrect fuel can result in
major damage to your vehicle’s engine
and fuel system.
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181
Fuel and refuelling

FUEL CONSUMPTION
The fuel consumption figures shown below have been calculated using a standard testing
procedure (the new EC test proc edure from Directive 99/100/EC), and produced in accordance with
The Passenger Car Fuel Cons umption (Amendment) Order 1996.
Under normal use, a vehicle's actu al fuel consumption figures may differ from those achieved
through the test procedure, de pending on driving technique, ro ad and traffic conditions,
environmental factors, ve hicle load and condition.
Urban cycle
The urban test cycle is carried out from a cold start and cons ists of a series of accelerations,
decelerations and periods of stea dy speed driving and engine idling. The maximum speed attained
during the test is 50 km/h (30 mph) with an average speed of 19 km/h (12 mph).
Extra-urban cycle
The extra-urban test cycle is carried out immediatel y after the urban test. Approximately half of the
test comprises steady-speed driving, while the re mainder consists of a series of accelerations,
decelerations and engine idling . The maximum test speed is 120 km/h (75 mph) and the average
speed 63 km/h (39 mph). The test is carried out over a distance of 7 km (4.3 miles).
Combined
The combined figure is an average of the urban an d extra-urban test cycle results, which has been
weighted to take account of the differ ent distances covered during the two tests.
For additional information on fuel consumption figures and exhaust emissions, visit the Vehicle
Certification Agency (VCA) website at http://www.vcacarfueldata.org.uk/.
Variant
Urban Extra-urban Combined CO² emissions
g/km
3.0 V6 Diesel 9.5 l/100 km (30.0 mpg)5.5 l/100 km
(51.3 mpg) 6.8 l/100 km
(42.0 mpg) 179
3.0 V6 Petrol 15.8 l/100 km (17.8 mpg)7.5 l/100 km
(37.8 mpg) 10.5 l/100 km
(26.8 mpg) 249
5.0 V8 Petrol -
Normally aspirated 17.3 l/100 km
(46.3 mpg) 7.8 l/100 km
(36.4 mpg) 11.1 l/100 km
(25.4 mpg) 264
5.0 V8 Petrol - Supercharged 18.7 l/100 km
(15.1 mpg) 8.7 l/100 km
(32.4 mpg) 12.5 l/100 km
(22.5 mpg) 292

183
Towing

TOWING A TRAILER (V6 petrol and
diesel vehicles only)
Note: It is the driver's responsibility to ensure
that the towing vehicle, and the trailer are being
used correctly, and in accordance with
manufacturers recommendations and any
applicable legislation. Your Dealer/Authorised Repairer and main
motoring and caravanni
ng organisation can
advise you on towing, towing weight capacities
and about regulations that apply in other
countries.
The following are important points of safety,
stability and comfort, upon which further
advice should be sought:
• Maximum braked towing weight is
permissible, provided that long periods of
uphill driving on gradients over 8% are not
undertaken.
• In high altitude mount ainous regions, the
thinner atmosphere can reduce engine
performance. Abov e 1000 metres (3250
feet), the stipulated maximum permitted
gross train weight mu st be reduced by
10% for every 1000 metres (3250 feet) in
altitude.
E95507
WARNINGS
Never exceed the maximum weights
for either the vehicle, or the trailer.
Doing so can cause accelerated wear
and damage to the ve hicle. It can also
adversely affect vehicle stability and braking,
which in turn can lead to loss of control and
increased braking distance resulting in a
rollover or crash.
To preserve handling and stability,
only fit Jaguar approved towing
accessories.
Never use towing eyes or lashing
points to tow a trailer. They have not
been designed for this purpose and
doing so may cause them to fail resulting in
injury or death.
When towing, do not exceed 100
km/h (60 mph) or 80 km/h (50 mph)
if a temporary spare wheel is in use.

Towing
184

Diesel engine vehicles
The diesel engine management system
incorporates sensors to determine optimum
performance. It is also designed to protect the
engine when arduous conditions are
encountered during towing. When ambient
temperature exceeds 40°C (104°F), the engine
coolant temperature may increase above
normal operating level. If this occurs, the
management system will initiate a series of
actions to restore norma l operating conditions.
The actions may include:
• A message centre message.
• Engine performance reduction.
• Air conditioning syst em cycling. The
system temperature output will fluctuate
between hot and cold, in order to dissipate
engine heat. If engine overheat persists,
the air conditioning will move to
continuous heat output.
It is advisable to bring the vehicle and trailer to
a convenient stop and allow the engine to idle
until normal temperature is restored. Do not
turn off the engine.
Trailer electrical connection
Note: The rear parking sensors are
automatically disabled when the trailer
electrical conne ction is made using Jaguar
approved towing equipment.
The vehicle's electrical system has been
designed to support all towing requirements,
and comply with legal requirements for the
specific territory in which the vehicle is first
sold.
LEVELLING
To maintain vehicle stabilit y, it is essential that
the trailer is loaded so that it remains parallel to
the ground. This is particularly important when
towing twin axled trailers.
CAUTION
Only connect appr oved electrical
circuits, which are in good condition to
the trailer socket. Connecting incorrect, or
faulty circuits may seriously damage the
vehicle's electrical circuits.
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