2009 JAGUAR XF Light

165
Adaptive cruise control (ACC)

ADVANCED EMERGENCY BRAKE
ASSIST
On vehicles fitted with Advanced Emergency
Brake Assist, brake response is improved
during emergency braking when a moving
vehicle is detected close ahead.
Advanced Emergency Brake Assist activates If
the risk of collision increases after the
FORWARD ALERT warning is displayed.
See FORWARD ALERT FUNCTION (page 164).
The brakes are automatica lly applied gently in
preparation for rapid braking (which may be
noticeable). If the brake pedal is then pressed
quickly, then braking is implemented fully,
even if the pressure on the pedal is light.
See HINTS ON DRIVING WITH ABS
(page 144).
Advanced Emergency Brake Assist is available
at speeds above approximately 7 km/h (5 mph)
and will function even if Forward Alert and
Adaptive Cruise Control are switched off. A
fault with the system will be indicated by the
warning FORWARD ALER T UNAVAILABLE
appearing in the mess age centre. Advanced
Emergency Brake Assist will not be available
until the fault is rectified.
WARNING
Advanced Emergency Brake Assist, is
an additional safety system and is not
intended to relieve the driver of the
responsibility for exer cising due care and
attention when driving.
CAUTION
The system may not react to slow
moving vehicles and will not react to
stationary vehicles or vehicles not
travelling in the same direction as your vehicle.
Advanced Emergency Brake Assist can
only improve braking performance if the
driver applies the brakes.
Warnings may not appear if the distance
to the vehicle ahead is very small or if
steering wheel and pedal movements
are large (e.g. to avoid a collision).
Advanced Emergency Brake Assist
utilises the same radar sensor as
Adaptive Cruise Control and Forward
Alert - the same limita tions of performance
apply.
See PRINCIPLE OF OPERATION (page 159).
See USING ACC (page 159).
See FORWARD ALERT FUNCTION
(page 164).

167
Automatic speed limiter (ASL)

PRINCIPLE OF OPERATION
ASL can be used in a situation where varying
vehicle speed is likely but a maximum speed
must not be exceeded. For example, where a
local speed limit is 80 km/h (50 mph), the set
speed could be at that limit or just under.
If ASL is not selected, cr uise control is always
available by simply rotating the thumb wheel
on the right-hand side of the steering wheel to
set a cruising speed. The ASL button allows the
driver to select betwee n cruise control and the
automatic speed limiter. The ASL can be set to
any speed between 30 km/h (18 mph) and 240
km/h (150 mph).
Note: Although ASL only operates at speeds
between 30 km/h (18 mph) and 240 km/h (150
mph), the maximum speed can be set when the
vehicle is stationary.
When ASL is selected, the warning indicator in
the instrument panel will illuminate. When the
ASL button is pressed ag ain, the light will
extinguish, ASL will be cancelled and cruise
control will be available again.
USING THE ASL
Setting a speed limit
• Press the ASL button.
• Use the thumb wheel ( 1) to set the
required speed. The message centre
display in the instru ment panel will show
the selected speed.
• The set speed can be adjusted at any time
by rotating the thumb wheel (1).
WARNINGS
Automatic Speed Limiter (ASL) set
speeds must be within local speed
restriction limits. The driver must
always ensure that a safe speed is set, taking
into account the prevailing traffic and road
conditions.
In certain conditions, such as a steep
downhill gradient, the vehicle speed
may exceed the set speed limit. This
is because engine br aking is unable to
maintain or reduce the vehicle speed. Driver
intervention may be required.
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Driving dynamics
172

Note: In rare circumstances, when TracDSC is
selected or DSC is o ff, high acceleration on
rough roads may cause DSC to switch back on.
This prevents high loads on the vehicle
driveline. DSC will su bsequently remain on,
unless TracDSC is selected or DSC is switched
off manually.
Stability control indicator
If there is a fault, the warning
indicator will ill uminate in the
instrument panel and the message
centre will display DSC NOT AVAILABLE with
an amber backlight.
It is safe to drive the vehicle, but the DSC
system will not activa te under wheel spin or
slide conditions. You should seek qualified
assistance as soon as possible.
Adaptive dynamics
(Supercharged vehicles only)
Jaguar Adaptive dy namics continuously
monitors the road a nd driver inputs and
optimises the vehicle suspension settings for
ride comfort and control.
The adaptive dynamics system is linked to
Dynamic mode, modifying the suspension
settings for a more sporting character.
If the message centre displays the message
ADAPTIVE DYNAMICS FAULT , a fault has been
detected in the adaptive dynamics system.
Seek qualified assistan ce as soon as possible.
Active Differential Control (E-diff)
(Supercharged vehicles only)
The E-diff improves trac tion when one driven
wheel has more grip than the other. This
improves progress out of corners and on
patchy or uneven surfaces. The E-diff can also
increase stability in oversteer situations,
depending on road c onditions and driver
inputs. Settings for the E-diff are made automatically,
without the need for driver selection.
If there is a fault with the E-diff system, the
message centre will display
EDIFF SYSTEM
FAULT . If DSC is off, then TracDSC will be
selected automatically. The driver can still
switch between DSC mode s, as normal and the
vehicle is safe to dr ive, but seek qualified
assistance as soon as possible.
Note: If the E-diff is active continuously for an
extended period (e.g. on a patchy surface with
DSC off) then the E-diff may be temporarily
deactivated to prevent ov erheating. If DSC is
off, then TracDSC will be selected
automatically. The mess age centre will display
EDIFF NOT AVAILABLE . The driver can still
switch between DSC modes as normal and the
E-diff will become availa ble again automatically
when it has cool ed sufficiently.

173
Driving dynamics

JaguarDrive Control scenarios
The table below gives examples of the drive control settings suggested for different driving
scenarios.
Scenario Suggested driver selection Tyre fitment JaguarDrive ControlDynamic
Stability Control (DSC) Transmission
Wet grass Standard Winter mode DSC On
(default)Drive (D)
Very wet tarmac
Slippery boat launch
ramp
Hill descents while
towing on slippery
surfaces Sport (S) +
Manual
Ice/light snow Standard or All
Season tyres Drive (D)
Snow ploughed
hard-topped roads
(including black ice) All Season tyres
Packed snow roads Winter tyres
Deep fresh snow Snow chains Sport (S)
Normal driving
conditions (e.g. dry
tarmac, town driving,
motorway cruising
etc. ) Standard
No driver
selection
required.
Special modes off. Drive (D)
Overtaking on a dry
road Drive (D) or
Sport (S)
Pulling out onto a
busy road in dry
conditions
Favourite country
lane (public road) Dynamic mode Sport (S)
or
Sport (S) + Manual
Private track/race
day TracDSC
(where conditions
permit)

175
Fuel and refuelling

Unleaded fuel
Unleaded fuel must be used for the emission
control system to operate properly. Its use will
also reduce spark plug f ouling, exhaust system
corrosion and engine oil deterioration.
Octane rating
The recommended unleade d fuel should have
an octane rating of 95 RON (Research Octane
Number) or higher. Howe ver, you may also use
unleaded fuel with a lower RON, but
performance will be reduced. The minimum
octane rating for fuel to be used is 91 RON.
Note: Using unleaded fuel wi th a lower octane
rating than recommended, can cause
persistent heavy engi ne knock (a metallic
rapping noise). If severe , this can lead to
engine damage.
If a heavy knock is dete cted, even when using
fuel to the recommended octane rating, or if
you hear knock while ho lding a steady speed
on level roads, consult your Dealer/Authorised
Repairer to have the problem corrected. Failure
to do so is misuse of the vehicle, for which
Jaguar Cars is not responsible. However,
occasional, light knock for a short time while
accelerating or driv ing up hill, may occur.
ALTERNATIVE FUELS FOR PETROL
ENGINES
Fuels containing alcohol
Some fuel suppliers sell fuel containing alcohol
without advertising its presence. Where
uncertainty exists, check with the service
centre operator. Note:
Some difficulty in starting may be
encountered when using alcohol blended fuel.
Ethanol
Fuels containing up to 10% Ethanol (grain
alcohol) may be used. Ensure that the fuel has
octane ratings no lower than those
recommended for unleaded fuel. Most drivers
will not notice any opera ting difference with
fuel containing Ethanol. If a difference is
detected, the use of c onventional unleaded fuel
should be resumed.
Methanol
Some fuels contain Meth anol (Methyl or wood
alcohol). If you use fuels containing Methanol
the fuels must also contain co-solvents and
corrosion inhibitors fo r Methanol. Also, do not
use fuels which contain more than 10%
Methanol even if they contain co-solvents and
corrosion inhibitors. Fuel system damage or
vehicle performance pr oblems resulting from
the use of such fuels is not the responsibility of
Jaguar, and may not be covered under the
warranty.
CAUTIONS
Fuel containing alc ohol can cause paint
damage, which may not be covered
under the warranty.
CAUTIONS
This vehicle is not suitable for use with
fuels containing more than 10%
Ethanol.
Do not use E85 fuels (85% Ethanol
content). Equipment necessary for the
use of fuels containing more than 10% Ethanol
is not fitted to this vehicle. If E85 fuels are
used, serious engine a nd fuels system damage
will occur.
CAUTION
Wherever possible avoid using fuel
containing Methanol.

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.

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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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.