Jaguar XJ (2008 year). Manual - part 45

181

Fuel and Refuelling

Fuels containing alcohol

Caution: Take care not to spill fuel
during refuelling. Fuel containing
alcohol can cause paint damage, which
may not be covered under the
warranty.

Some fuel suppliers sell fuel containing
alcohol without advertising its presence.
Where uncertainty exists check with the
service station operator.

Note: Some difficulty in starting may be
encountered when using alcohol blended
fuel.

Ethanol

Caution: This vehicle is not suitable for
use with fuels containing more than 10
per cent ethanol. Do not use E85 fuels
(85 per cent ethanol content).
Equipment necessary for use of fuels
containing more than 10 per cent is not
fitted to this vehicle. If E85 fuels are
used, serious engine and fuel system
damage will occur.

Fuels containing up to 10 per cent ethanol
(grain alcohol) may be used. Ensure the
fuel has octane ratings no lower than
those recommended for unleaded fuel.
Most drivers will not notice any operating
difference with fuel containing ethanol. If
a difference is detected, the use of
conventional unleaded fuel should be
resumed.

Methanol

Some fuels contain methanol (methyl or
wood alcohol). If you use fuels containing
methanol the fuels must also contain
co-solvents and corrosion inhibitors for
methanol. Also, do not use fuels that
contain more than three per cent
methanol even if they contain co-solvents
and corrosion inhibitors. Fuel system
damage or vehicle performance problems
resulting from the use of such fuels is not
the responsibility of Jaguar Cars Limited,
and may not be covered under the
warranty.

Methyl Tertiary Butyl Ether (MTBE)

Unleaded fuel containing an oxygenate
known as MTBE can be used provided
the ratio of MTBE to conventional fuel
does not exceed 15 per cent.

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.

Fuel and Refuelling

182

FUEL FILLER FLAP MANUAL
RELEASE

If the fuel filler flap fails to release it can be
manually unlocked as follows:

In the luggage compartment, remove the
carpet from the right-hand side by turning
the carpet securing screws
counter-clockwise, then gently pull the
carpet down.

Locate the fuel flap release mechanism
and pull the knob rearwards. This will
release the flap to gain access to the filler
cap and enable the vehicle to be refuelled.

Report the fault to a Jaguar Dealer.

JAG0642

JAG0643

183

Fuel and Refuelling

CATALYTIC CONVERTORS

A few precautions on the use of vehicles
fitted with catalytic converters are
necessary. These are:
• 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.

• Heavy impact on the converter

casings must be avoided.

• 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 Dealer.

• A correctly tuned engine optimises

exhaust emissions, performance and
fuel economy and it is recommended
that the vehicle is regularly
maintained.

• 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.

• 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.

• 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. tire pump, paint
spray attachment etc., as this could
also result in catalytic converter
damage.

• The vehicle is designed for normal

road use. Below are examples of
abuse which could damage the
catalytic converters and/or vehicle
and 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.

Climate Control

184

Climate Control

INTRODUCTION

The cabin is supplied with filtered air from
a fully automatic electronic climate
control system with manual overrides.

Two systems are available:
• A two zone system which allows the

front occupants to set individual
temperatures for the left and right
sides of the interior.

• A four zone system which allows front

and rear occupants to set individual
temperatures, i.e. two front zones and
two rear zones.

Occupant controls

Note: If your vehicle is equipped with a
touch-screen, the climate controls are
described in the touch-screen display
handbook.

The main climate control panel is located
in the centre console above the radio and
audio controls.

There are two types of control panel for
either two or four zone systems:
• A dedicated control panel with LCD

(Liquid Crystal Display) screen.

• A multi-function touch-control and

display unit shared with navigation
and other systems. Where this control
unit is fitted, refer to the touch-screen
display handbook for the detailed
operating instructions.

Where the four zone climate control
system is fitted, an additional
control/display panel for rear passenger
use is located at the rear of the centre
console, between the front seats.

Voice control

The climate control system may also be
operated by spoken commands if the
available voice activation system is fitted.
For full information on the use of this
system refer to the touch-screen display
handbook or audio systems handbook.

RECOMMENDED OPERATION

Automatic climate control

Automatic climate control provides
efficient regulation of the vehicle
environment without constant
adjustments from the occupant.

Sensors inside the vehicle monitor
temperature, humidity and direct sunlight.
In response, the electronic control system
automatically adjusts the heat input,
blower speed, air intake and airflow
distribution, so as to maintain the
selected temperature(s) and reduce
misting.

Automatic operation provides optimum
comfort under most driving conditions.

It is recommended that automatic control
(AUTO) is selected as the normal
operating mode.

Use of air conditioning

Air conditioning is an integral part of the
climate control system, providing cooled
and dehumidified air for occupant
comfort; the dry airflow is also effective in
preventing misting of the windows.

While the air conditioner can be manually
switched off, it is recommended that it is
used in all climatic conditions throughout
the year, preferably in AUTO mode.

Close all windows and the sunroof when
the air conditioning is on to ensure
satisfactory operation.

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