Jaguar XJ (2008 year). Service manual — part 50

201

Touch-screen Climate Control

R

CLIMATE OPTIONS

The Options button is
displayed in place of the °C/°F
button if the optional smog

sensor and/or rear climate control panel
(4-zone system) are fitted.

Touching Options displays the Celsius
(°C) and Fahrenheit (°F) selection buttons.
The display also shows either the rear
control panel buttons or the smog sensor
setting or both.

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 on the Options screen.

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: Touch the
+ button to increase sensitivity to low
smog levels. Touch the – button to
decrease sensitivity.

Caution: Don’t set the smog sensor to
a needlessly high level in cold and
damp conditions: this could result in
interior condensation.

REAR CLIMATE PANEL

Controlling the rear climate panel from
the touch-screen

On the ‘Climate Options’ screen (see
page 201) the ‘Rear Climate Control’
buttons provide control of the rear
system:
• Touch the left-hand button to switch

the rear control panel on or off.

• Touch Lock Panel to lock the rear

climate control panel. This prevents
rear passengers from altering the rear
climate settings, until the next time
the ignition is switched on.

• Touching Match Driver causes the

rear zones to adopt the same settings
as the driver’s zone. Any adjustments
made directly on the rear panel will
override these settings.

• Touch Adjust Settings to alter the

settings of the rear zones. A
simulation of the rear control panel
will be displayed on the touch-screen.

Touch-screen Climate Control

202

L

Simulated rear control panel

The simulation of the rear climate control
panel allows all of the rear climate
functions to be controlled via the
touch-screen.

Operation of these touch-screen buttons
is as described for the rear panel itself in
the owner’s handbook.

Note: It is not possible to make
adjustments on the actual rear panel while
the touch-screen simulation of the panel
is displayed. The touch-screen display will
revert to the main climate screen
30 seconds after the last touch.

203

Inertia Switch

R

Roadside Emergency

INERTIA SWITCH OPERATION

In the event of an accident, the inertia
switch may trip (depending on the
severity and type of impact), isolating
operation of the fuel pump. Once the
switch has tripped it must be reset before
attempting to restart the engine.

The inertia switch is located behind the
trim on the left-hand side of the vehicle,
forward of the front door post, below the
facia. A finger access hole in the trim
allows the driver to reset the switch.

To Reset the Switch

!

WARNING:

To avoid the possibility of fire or
personal injury, do not reset the inertia
switch if you see or smell fuel.

If no fuel leak is apparent, reset the inertia
switch as follows:

1. Turn the ignition switch to position 0.

2. Press down the red reset button on

the top of the inertia switch.

3. Turn the ignition switch to position II,

pause for a few seconds, then return
the key to position 0.

4. Make a further check for fuel leaks.

JAG0647

Emergency Starting

204

L

Emergency Starting

ROLLING START

This vehicle is fitted with automatic
transmission. In the event of a discharged
battery preventing a normal engine start,
the vehicle cannot be started by pushing
or towing. Either use jump leads
connected to a booster battery (e.g. on
another vehicle) or fit a fully charged
battery.

USING JUMP LEADS

Both the booster and discharged battery
should be treated with great care when
using jump leads. Always use high quality
leads capable of carrying the starter
current of the vehicle to be started.

!

WARNING:

To avoid serious injury use extreme
caution when removing the booster
cables as the engine will be running on
the previously disabled vehicle. This
means that you will be working close to
components which are moving at high
speed, carry high voltage, or may be
hot.

Before commencing, the following
precautions must be taken:
• When the battery of another vehicle is

being used, ensure that the vehicles
do not touch. Alternatively, remove
the charged battery and place near to,
not on, the vehicle with the
discharged battery.

• Ensure that both vehicles have all

electrical services OFF, the parking
brakes applied and the transmission
in the P (park) position.

• Where the jump leads are of a

different colour, e.g. red and black,
use red for positive (+). This aids
identification and helps to avoid
crossing positive (+) to negative (–).
Take extra care to avoid crossing the
polarity when using cables of the
same colour.

Caution: If using a jump start vehicle,
under no circumstances should the
vehicles come into contact with each
other. This could establish an earth
connection, which may cause sparks
and damage.

Caution: Do not run the engine of the
jump start vehicle when boost starting
a Jaguar vehicle. If the jump start
vehicle’s engine is running and the
jump leads are disconnected, damage
to the Jaguar vehicle’s electrical
system will result.

Note: The booster battery must be of the
12 volt type.