2004 JAGUAR XJ air condition

Climate Control 5 - 3
5 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
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
(see page 5 - 6).
• A multi-function touch control and display unit shared with navigation
and other systems. Where this control
unit is fitted, refer to the Jaguar
Touch-screen 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
optional voice activation system is fitted.
For full information on the use of this
system refer to the JaguarVoice
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.
Use of air recirculation
The air conditioner/heater system is
supplied with fresh air via an intake flap.
Closing the flap causes the air inside the
vehicle to be recirculated. This helps to
prevent unpleasant odours from being
drawn into the vehicle and also to
improve the performance of the air
conditioner in very hot conditions.
However, the use of recirculated air will
cause screen misting after a short period
and should only be used as necessary.

5 - 4 Climate Control
In AUTO mode, the air intake flap is
controlled automatically. If required,
air recirculation may be manually
selected for either a short or indefinite
period.
Air Recirculation
Timed air recirculationPress the button briefly to select
timed air recirculation.
The fresh air intake is opened
and the button LED extinguished at the
end of the time out period.
Latched air re circulation
Press and hold the button for a
few seconds to select latched air
recirculation. Selection is
indicated by the scre en symbol and two
beeps.
Selecting latched air recirculation cancels
AUTO operation.
To deselect latched air recirculation,
press the recirculat ion button again,
or select AUTO.
!WARNING:
To prevent humidity build up inside
the vehicle and possible screen
misting, avoid driving with the air
conditioning system off or with
manual air recirculation selected for
prolonged periods.
General Points
To ensure the satisfactory operation of
the climate control system, note the
following points:
• Ensure that the external grille at the base of the windscreen, which
provides fresh air for the climate
control system, is kept clear of leaves,
snow or obstructions.
• A solar sensor is mounted on the centre top of the fascia, as shown
opposite ( A) . E n s u r e t h a t this sensor is
not covered.
• Temperature and humidity sensors are located behind the small grille ( B).
Do not cover or obstruct the opening.
• Air ducts under the front seats supply the rear passenger footwells (see
illustration opposite). Objects or
material placed under the seats may
block or obstruct the open ducts. • The external air intake to the air
conditioner/heater system is fitted
with a filter. Ensure that the filter is
changed at the specified service
intervals to maintain efficient
operation.
• If the air conditioning system is not used frequently, it should be run
briefly at least once each week, with a
cold setting, to prevent the seals from
drying out with subsequent
refrigerant leaks.
• Moisture removed from the air by the air conditioning unit is discharged
onto the road underneath the vehicle.
After stopping, puddles of water may
form underneath the vehicle.
Air Distribution
The illustration opposite shows the
location of the air vents within the
vehicle. The airflow from the fascia face
level vents is regulated using thumbwheel
controls and adjustable direction vanes.
Air distribution between the windscreen,
fascia and floor levels is selected
automatically when operating in AUTO
mode but can be selected manually.

5 - 6 Climate Control
Front Climate Controls
The climate control functions are selected
by push buttons and a rotary control.
When a button is pressed, selection of
the function is confirmed by a beep; most
buttons also have an illuminated LED.
Many system functions also have graphic
symbols displayed on the LCD (liquid
crystal display) screen.
Automatic control (AUTO) may be
overridden at any time. Defrost/demist
operation is available and also manual
selection of blower speed,
air distribution, recirculation,
air conditioning and windscreen heating.
Panel illumination
With the exterior lighting switched on or
Autolamps selected at night, the graphics
on the panel controls are illuminated by
low level backlighting.
In countries with daytime runnin g lamps,
the panel illumination will not be on
during daytime if the headlamp switch is
off or in Autolamp position unless it is
dark and the autolamp selects the
headlamps on.
The illumination level is adjusted by the
common instrument panel dimmer
control (see page 4 - 25). 1.
Blower speed and system on/off.
2. Display panel.
3. Fahrenheit/Celsius selector.
4. Air conditioner on/off.
5. Select automatic operation.
6. Recirculation/fresh air.
7. Increase right zone temperature.
8. Decrease right zone temperature. 9.
Select air distribution.
10. Heated rear screen/door mirrors.
11. Heated front screen (optional).
12. Defrost windows.
13. Select dual/single temperature zone.
14. Increase left zone temperature.
15. Decrease left zone temperature.
16. Option without fron t screen heater.

5 - 8 Climate Control
Windscreen Defrost/Demist
Frost and heavy mistingTo remove frost or heavy
misting from the windscreen,
press the DEF button.
• The blower switches on automatically at a high speed but the speed can be
increased or decrea sed manually if
required.
• Air conditioning switches on automatically and cannot be
deselected.
• Recirculation is ca ncelled and cannot
be selected.
• The front screen heater and the rear screen heater/door mirror heaters
switch on automatically, provided the
engine is running.
To deselect defrost mode, press AUTO
(recommended operating mode).
Light misting To prevent or remove light
windscreen misting, select
manual air distribution to
windscreen and feet
(see page 5 - 9).
Heated Screens and Door
Mirrors
The front ( F) and
rear ( R) screen heaters
may be switched on and
off in any mode, including system off,
but only operate when the engine is
running. The door mirror heaters are also
controlled by the rear screen heater
button.
The front screen heater (if fitted) switches
off automatically after 6½ minutes.
The rear screen and door mirror heaters
switch off automatica lly after 21 minutes.
The windscreen heaters may be manually
deselected during the timed period using
the push buttons.
In cold ambient conditions, at the start of
a journey, the front and rear screen
heaters may switch on automatically for
the timed period.
Where a front screen he ater is not fitted,
the windscreen has a wiper park zone
heater which operates automatically with
no manual control.
Note: The top three lines of the rear
screen pattern are a concealed antenna
system and do not defrost the rear screen.
Air Conditioning
Press to switch the air
conditioning on or off.
The air conditioning system is
controlled automatically in AUTO mode.
Deselecting A/C cancels AUTO mode.
The air conditioning system is also
switched on automatically in defrost
mode (DEF) but cann ot be deselected.
Blower Speed
Set the blower speed as
required with the rotary
control knob. Blower speed is
shown as a series of bars on the
LCD screen.
When operating in AUTO mode, blower
speed is controlled automatically (but not
displayed) and any adjustment of the
knob will cancel AUTO mode.
Note: In AUTO mode, the blower only
operates at low speed, if heating is
required, until the engine is warm.

Climate Control 5 - 9
Manual Air Distribution
Air distribution is automatically
controlled in AUTO and defrost modes.Press MODE to select manual air
distribution.
Four air distribution modes are
available and are selected in succession
by pressing the MODE button. A symbol
is displayed for the selected mode.
To Switch the System Off
Press in the blower rotary
control knob to switch the
climate control system off.
If the blower control knob is
pressed again, the system will switch on
in the previous mode set.
4-zone climate control system
If 4-zone climate control is fitted,
switching off front climate control (above)
will also cause the rear climate control
system to be switched off. Switching the
front system on again will not switch the
rear system on.
Ram Air
With the climate control system switched
off, air recirculation is automatically
selected (intake flap closed). To select
fresh air with the system off, press the
MODE button to select one of the air
distribution modes.
With the blower switched off, the fresh
airflow results from the forward motion
of the vehicle (ram air effect).
Smog sensing
Where fitted, the smog sensor detects
road traffic pollutants and automatically
selects air recirculation when the level of
pollution outside the vehicle reaches a
certain level. The level of pollution at
which the smog sensor will respond can
be adjusted.
Once the level of pollutants decreases,
air recirculation will switch off (subject to
the normal operation of the automatic
climate control system).
To adjust smog sensitivity: Press the
air recirculation and AUTO buttons
simultaneously. The display will show a
number between 0 and 5: 0 indicates
that the smog sensor is switched off, and
5 shows that the sensor is set to its most
sensitive setting. Use the driver’s
temperature control bu ttons to increase
or decrease the smog sensitivity.
Caution: Don’t set the smog sensor to
a needlessly high level in cold and
damp conditions: This could result in
interior condensation.
Airflow distributed to the
windscreen and feet; select to
prevent or remove light misting
and when heating the interior.
Airflow directed to foot level;
select to heat the interior.
Airflow distributed to the face
and feet.
Airflow directed at face level
only; select to cool the interior.

Index
Adaptive cruise control . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 51
Air conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 3
Alarms and audible signals . . . . . . . . . . . . . . . . . . . . . . . 2 - 15
– audible signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 15
– error signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 16
– full alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 15
Alloy wheels – care of . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 24
Anti-freeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 11
Anti-lock braking system (ABS) . . . . . . . . . . . . . . . . . . . . 4 - 47
Audible warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 10
Automatic car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 23
Automatic climate control . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 3
Automatic transmission . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 43
B
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 13
– back-up sounder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 18
– charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 15
– electrolyte level – check/top up . . . . . . . . . . . . . . . . . . 7 - 15
– lead connection/disconnection . . . . . . . . . . . . . . . . . . 7 - 16
– reconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 18
Brake fluid level check . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 9
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 47
Brightwork – polishing . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 24 Bulb renewal
– front direction indicator . . . . . . . . . . . . . . . . . . . . . . . 6 - 15
– front fog light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 17
– front parking (side) light . . . . . . . . . . . . . . . . . . . . . . . . 6 - 16
– headlight – dipped beam . . . . . . . . . . . . . . . . . . . . . . . 6 - 15
– headlight – main beam . . . . . . . . . . . . . . . . . . . . . . . . 6 - 16
– number plate light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 17
– rear light assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 19
– side marker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 18
– side repeater indicator . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 17
– top access cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 14
C
Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 12
Carpets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 22
Catalytic converters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 68
Checks and top up
– brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 9
– engine coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 11
– engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 6
– power steering fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 8
– washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 10
Child restraint tether anchorages . . . . . . . . . . . . . . . . . . 3 - 29
Child safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 23
– door locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 14
Chromework – polishing . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 24
Climate control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 3
Clock adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 32
Coolant level – check/top up . . . . . . . . . . . . . . . . . . . . . . 7 - 11
Cruise (speed) control . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 49