Jaguar XJ (2008 year). Service manual — part 32

129

Trip Computer

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Trip Computer

COMPUTER DISPLAY

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, forexample,
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. This will be followed
by any warning messages, if there are
any, for example, PASSENGER 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)

This displays the distance travelled since
the last memory reset.

The maximum trip reading is 16,090
kilometres (9999.9 miles). The computer,
either A or B, will automatically reset to
zero if this distance is exceeded.

Range

This shows the predicted distance,
kilometres or miles, that the vehicle
should travel on the remaining fuel,
assuming average fuel economy and fuel
consumption stay constant.

Current Fuel Consumption

Instantaneous or at the moment fuel
consumption, which is continuously
updated.

Average Fuel Consumption (A/B)

The average fuel consumption, litres per
100 kilometres or miles per gallon, 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.

E86333

Trip Computer

130

L

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 or 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.

SETTING THE TRIP COMPUTER

At the start of the journey, or series of
journeys, to be recorded, reset the
computer memory to zero as follows:

1. Press the TRIP button on the end of

the left column stalk switch to select a
trip function. The computer will
display either TRIP A: or TRIP B: data.

2. Press the A/B button to select the trip

(A or B) to be reset.

3. Press the RESET button and hold for

three seconds.

The display will read:
RESETTING
TRIP A (or B).

Then it will reset and display:
A: 0 (or B: 0) or the new value.

Note: All trip functions for A or B,
depending on which was selected, will be
reset.

131

Trip Computer

R

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 ten seconds, then the
message will reappear.

Note: Hidden messages reappear after an
ignition OFF/ON cycle, if the fault remains.

Exterior Lighting

132

L

Exterior Lighting

LAMPS MASTER SWITCH

!

WARNING:

It is an offence in certain countries to
obscure front and rear lamps, direction
indicators and reflectors.

Switch positions

The exterior lamps are controlled by the
left-hand column stalk switch.

The rotary collar on the stalk has positions
for turning the exterior lamps on or off and
positions for autolamps/exit delay. These
are:

OFF

All exterior lamps OFF (except vehicles
provided with daylight running lamps).

Sidelamps

Switches on front side lamps, tail, license
plate and any other marker lamps
required by local legislation.

Headlamps

With the ignition in position II, this
position switches on low beam
headlamps, in addition to the lamps
switched on in sidelamp position.

The left-hand column stalk switch has two
positions for controlling the high beam.

Pulling the switch towards the steering
wheel and releasing causes the high
beam to flash on and off. The high beam
can be flashed at any time when the
switch is pulled and will remain ON for as
long as the switch is held.

The second position is to switch high
beam headlamps ON. With the ignition in
position II, first select low beam lamps,
and then push the column lamp switch
away from the steering wheel.

The blue warning lamp on the instrument
panel and the high beam headlamps will
come ON.

To turn high beam OFF, pull the column
switch towards the steering wheel to
return to low beam.

Note: If low beam is switched OFF with
high beam still activated, both low and
high beam will be extinguished. Both low
and high beam will illuminate if low beam
is turned on again.