fuel consumption JAGUAR XJ 2004 X350 / 3.G Owners Manual

Owner Information 1 - 9
Protect the Environment
We must all play our part in protecting
the environment. Correct vehicle usage
and disposal of waste cleaning and
lubrication materials are significant steps
towards this aim.
Avoid using high engine speeds. You will
then protect your engine, reduce fuel
consumption, lower the engine noise
level and help towards reducing the
environmental burden.
Dispose of batteries, tyres, engine, brake
and coolant fluids at your local
authorised waste disposal facilities.
Window Tinting
!WARNING:
Do not have your vehicle windows
tinted with a metal oxide tinting (for
maximum heat reduction from sun
load).
Metal oxide tinting prevents the
reception of the Global Positioning
Satellite (GPS) signals by the antenna
causing the navigation system to stop
functioning.
Metal oxide tinting also prevents the
reception of the Remote Keyless Entry
(RKE) signals by the antenna, causing
reduced operation of the arming/
disarming/locking/unlocking system of the
vehicle.
A non-metal tinting should be used if you
require window tinting and if in doubt,
contact your Jaguar Retailer for advice.
Window marking
It is a worthwhile precaution to have the
vehicle registration number etched into
each window glass by a Jaguar Retailer.
Mobile/Portable
Telephones
!WARNING:
Using a mobile/portable telephone
without an exterior antenna is not
recommended when driving as the
electro-magnetic fields produced can
cause malfunctions with the vehicle
electronic systems.
Check the laws and regulations on the
use of cellular telephones in the areas
where you drive. Always obey them. Also,
give full attention to driving.
Use hands-free operation (if fitted) and
pull off the road and park before making
or answering a call, if driving conditions
so require.

On the Road 4 - 13
Clearing Messages
Messages can be hidden by pressing
RESET on the trip computer switchpack.
One press will hide one message.
Once all messages have been hidden,
the display will show trip data, a further
press will display the odometer reading.
If RESET is pressed again, all active
messages will be ‘re-displayed’.
Repeatedly pressing the RESET button will
cycle through the trip, odometer and
message modes.
If a fault occurs when in trip computer or
odometer mode, the relevant message
will be displayed immediately.
If a trip computer function is selected by
pressing the TRIP button while messages
are displayed, the trip data will be
displayed for 10 seconds, then the
message will reappear.
Note: Hidden messages reappear after an
ignition OFF/ON cycle, if the fault
remains.
Trip Computer
The computer memory stores data for a
journey or series of journeys until it is
reset to zero.
The displayed information is for guidance
only, as it can be affected by traffic, road
and weather conditions.
Two independent memories are available
(A and B) to allow two separate journeys
to be recorded concurrently,
for example, work usage and evening/
weekend usage.
Trip distance, average fuel economy and
average speed will be prefixed A or B
depending on the current memory
selected.
Press the TRIP button on the end of the
left column stalk switch repeatedly to
display the data in the following order:
• Odometer.
•Trip distance.
•Range.
• Current fuel consumption.
• Average fuel economy.
• Average speed.
• Messages.
Odometer
The odometer shows the total vehicle
distance travelled since the vehicle was
new.
When the ignition is switched ON
(position ‘II’) the display shows the
odometer reading unless another trip
computer function was previously
selected or a warning message is
displayed, for example, ‘DOOR OPEN’.
The odometer reading is displayed in
either miles or kilometres, depending on
the units selected with the trip computer.
Trip Distance (A/B)
Distance travelled since the last memory
reset. The maximum trip reading is
9999.9 miles (16, 090 kilometres).
The computer, either A or B, will
automatically reset to zero if this distance
is exceeded.
Range
Predicted distance, kilometres or miles,
that the vehicle should travel on the
remaining fuel, assuming average fuel
economy and fuel consumption stay
constant.

4-14 On the Road
Current Fuel Consumption
Instantaneous or ‘at the moment’ fuel
consumption, which is continuously
updated.
Average Fuel Economy (A/B)
The average fuel consumption, miles per
gallon (or litres per 100 kilometres),
based on the accumulated distance
travelled and the accumulated fuel used.
Average Speed (A/B)
The average speed since the last press of
the reset button.Trip Computer Switchpack
ML/km
Pressing the ‘ML/km’ button alternately
displays data in metric or imperial units.
A/B
Selects either A or B trip memory.
Select the required data using the column
stalk TRIP button and then pressing A/B
will show the A or B information for that
data. RESET
• One short press clears (hides) the
displayed message. Continue to give
brief presses to clear one message
after another until all messages are
cleared.
• Press and hold for three seconds to reset or clear the selected trip, A or B,
to zero.
Note: If warning messages are hidden,
the warning/fault still exists and requires
investigation.
Warning and Information messages have
priority over trip data and, if active, will
be displayed when the ignition is at
position ‘II’.

On the Road 4 - 65
Fuel capacity
Avoid the risk of running out of fuel and never intentionally
drive the car 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 to the tank as there will be a small reserve remaining in
the tank.Fuel Economy
The following tips not only lead to greater fuel economy but also
reduce air pollution causing less environmental damage:
• Try to avoid using the car for short journeys – this will lead
to greater fuel economy and reduce wear on the engine.
• Plan ahead – choose uncongested routes, combine car trips and share cars where possible.
• Drive off as soon as possible after starting a cold engine – do not leave the engine idling until it has warmed up.
• Drive smoothly and efficiently – harsh acceleration and heavy braking have a significant effect on fuel
consumption – driving more smoothly saves fuel.
• Slow down – driving at high speeds significantly increases fuel consumption.
• Switch off – sitting stationary is zero miles per gallon, switch
off the engine when it is safe to do so.
• Unnecessary weight – do not carry unnecessary weight and remove roof-racks when not in use.
• Regular servicing keeps the engine at best efficiency.
• Ensure that tyres are inflated to the correct pressure for the journey.
• Use air conditioning and all vehicle electrical devices sparingly – all increase fuel consumption.
• Check your fuel consumption – it will help you get the most from your car and any significant change in consumption
may indicate a vehicle fault.
Normally
Aspirated
Supercharged
Tank capacity 22.4 US gallons
85 litres 22.3 US gallons
84.5 litres
Fill capacity (when fuel
gauge indicates empty) 20.9 US gallons
79 litres20.3 US gallons
77 litres
Reserve capacity (when fuel
gauge indicates empty) 1.5 US gallons
5.8 litres2.0 US gallons
7.5 litres

4-68 On the Road
Catalytic Converters
A few precautions on the use of vehicles
fitted with catalytic converters are
necessary. These are:
1. In order to maintain the efficiency of the emission control system it is
essential that unleaded fuel is used.
Use of leaded fuel will seriously
damage the catalytic converters.
2. Heavy impact on the converter casings must be avoided.
3. The engine settings must not be altered; they have been established to
ensure that the vehicle will comply
with stringent exhaust emission
regulations. Incorrect engine settings
could cause unusually high catalytic
converter temperatures and thus
result in damage to the converter and
vehicle. If adjustment to the settings is
considered necessary, this should be
performed by a Jaguar Retailer. 4. A correctly tuned engine optimises
exhaust emissions, performance and
fuel economy and it is recommended
that the vehicle is regularly
maintained.
5. Do not continue to operate the vehicle if any engine malfunction is evident;
malfunctions should be rectified
immediately. For instance, misfire,
loss of engine performance, excessive
oil consumption or engine run-on may
lead to unusually high catalytic
converter temperatures and may
result in damage to the converters and
vehicle.
6. The use of catalytic converters increases exhaust system
temperatures, therefore, do not
operate or park the vehicle in areas
where combustible materials such as
dry grass or leaves may come into
contact with the exhaust system. 7. Do not run the engine with either a
spark plug lead disconnected or a
spark plug removed. Do not use any
device that requires an insert into a
spark plug hole in order to generate air
pressure e.g. tyre pump, paint spray
attachment etc., as this could also
result in catalyti c converter damage.
8. The vehicle is designed for normal road use. Below are examples of abuse
which could damage the catalytic
converters and vehicle. These may
lead to a dangerous condition due to
excessively high catalytic converter
temperatures.
• Competition or off-road use.
• Excessive engine speed.
• Overloading the vehicle.
• Switching off the engine whilst in gear.