2004 JAGUAR XJ check engine light

On the Road 4 - 5
Warning Lights
Warning lights are arranged within the
instrument cluster.
There are two warning lights, one red,
the other amber, located above the
message centre for primary and
secondary status of the warnings
displayed by the message centre.
‘RED’ warning lights are for primary
warnings. A primary warning must be
investigated immediately by the driver or
a Jaguar Retailer.
‘AMBER’ warning lights are for secondary
warnings when the driver must take
action and then report the fault to a
Retailer at the earliest opportunity.
Other lights within the instrument cluster
indicate system status, such as blue for
main beam and green for direction
indicators, when in operation. Lamp check
A lamp check is initiated when the
ignition is switched ON and lasts for
three seconds (excepting the air bag
warning light which will remain on for
6seconds). Ifany wa
rning light remains
on after this period, investigate the cause
before driving.
Note: Not all lamps are included in the
lamp check, for example main beam
headlights or direction indicators.
Low Oil Pressure (RED)
This lights up with the ignition
switched ON and should go
out once the engine is running.
If the light remains ON once the engine
has started or comes ON whilst driving,
loss of oil pressure is indicated.
STOP the engine immediately and
investigate the cause.
Caution: Do not restart the engine
until the cause of loss of oil pressure
has been identified and rectified.
First check the engine oil level,
seepage7-6.

On the Road 4 - 7
Brake (RED)
Lights up when:
• The ignition is ON and the parkbrake is ON.
• There is a fault with the parkbrake.
• The brake fluid is low.
If the light is ON and there are no
associated messages it means that the
parkbrake is applied.
If the light flashes, th ere is a fault with the
parkbrake system and the parkbrake
cannot be applied.
If the light is ON and the message
‘PARKBRAKE ON’ is displayed, it means
that the parkbrake is applied but the
vehicle is moving. Release the parkbrake
or stop the vehicle when it is safe to do
so. If the light is ON and the message ‘LOW
BRAKE FLUID’ message with a RED
priority light is displayed on the message
centre, low brake fluid is indicated.
In this case, loss of braking in one,
or both, brake circuits may be imminent.
!WARNING:
If the message ‘LOW BRAKE FLUID’ is
displayed, DO NOT drive the vehicle
until the fault is rectified. Consult a
Jaguar Retailer immediately.
Anti-lock Braking
System (ABS) (AMBER)
If a fault has been detected in
the anti-lock brake
system (ABS) or the electric
parkbrake system, this light will
illuminate.
A warning message will appear with this
light to indicate either ABS fault or
parkbrake fault.
The brake system will continue to
function normally, but without ABS
braking.
Should the light come on or stay on after
the bulb check cycle, stop the vehicle at
the first opportunity, turn the engine OFF
and then restart.
If the ABS light comes on again,
the vehicle should be driven to a Jaguar
Retailer at the earliest opportunity.
!WARNING:
If the ABS and brake warning lights
are ON at the same time, DO NOT
drive the vehicle until the fault is
rectified. Consult a Jaguar Retailer
immediately.

4-16 On the Road
Messages
The table on this and the following pages lists all messages and warning lights and explains their meaning.
Message Warning
Light Priority
Indicator Meaning
LOW BRAKE FLUID Brake Red Displayed when the brake fluid level is low. Complete loss of braking may occur.
!WARNING:
DO NOT drive the vehicle until the fault is rectified. Consult a Jaguar
Retailer immediately.
ENGINE
COOLANT LOW None Red Displayed when the coolant level in
the reservoir is too low or is empty.
Check temperature gauge often. The coolant reservoir should be topped up at the
earliest opportunity and any leaks repaired.
CATS SYSTEM FAULT None Amber Displayed when a fault is detected in the adaptive damping (CATS) system (only those vehicles fitted with adaptive damping suspension). Report the fault to a
Jaguar Retailer at the earliest opportunity.
RESTRICTED
PERFORMANCE None Red This will be displayed when the vehicl
e has possible loss of power or driveability.
Report the fault to a Jaguar Retailer.
ENGINE SYSTEMS FAULT Malfunction
Indicator lamp Red Displayed when the engine has defaulted to ‘limp-home’ mode.
Report the fault to a Jaguar Retailer at the earliest opportunity.

On the Road 4 - 17
AIR SUSPENSION FAULT None None Drive the vehicle with caution and inform your nearest Jaguar Retailer to have the
fault rectified.
VEHICLE TOO LOW None None The air suspension system is too low. Start the engine and wait for the message to clear before driving the vehicle. If the message is displayed while you are driving,
restrict your speed until the message is cleared. If the message is persistently
shown, inform your Retailer.
DRIVER’S
(or PASSENGER’S) DOOR AJAR None Red The driver’s and/or one or more passenger doors are open. Check that all doors
are closed before driving.
TRUNK OPEN None Red Check that the luggage co mpartment lid is closed before driving.
HOOD OPEN None Red Check that the hood is closed before driving.
ABS FAULT ABS Amber ABS will not be available. The braki ng system will work but care must be used if
braking heavily.
STEERING COLUMN LOCKED None Amber The steering lock system has failed to unlock the steering column. The engine
cannot be started. Remove the key and re-insert it into th e ignition switch, then try
again to unlock the column by turning the steering wheel gently to the left and
right (only small movements will be possible).
TRANSMISSION FAULT None Amber It is likely that the driver will expe
rience a degradation of transmission operation
and possibly reduced ac celeration capability.
Message
Warning
Light Priority
Indicator Meaning

4-42 On the Road
Starting/Stopping the
Vehicle
When the vehicle is stationary the
automatic gear selector may be left in ‘D’,
‘ 2 ’, ‘ 3’, ‘ 4’ or ‘ 5’, unless the vehicle is to
be parked. When stopping for traffic
lights, junctions etc., either select ‘ P’ or
apply the parkbrake and select ‘ N’.
Before Starting
Before starting the engine, new owners/
drivers should familiarize themselves with
the layout and operation of the controls
and instruments.
!WARNING:
Before attempting to start the engine,
check parkbrake is ON and gear
selector lever is in position ‘P’ or ‘N’.
To Start the Engine
The engine cannot be started until the
gear selector is in ‘ N’ or ‘ P’.
Insert the key into the ignition switch and
turn clockwise to position ‘II’ to switch
on the ignition.
When the key is turned to position ‘III’
the starter motor will turn the engine
until:
• The key is released and automatically returns to position ‘II’.
• The ignition switch is turned to ‘0’ or ‘I’.
• The gear selector is moved out of ‘P’ or ‘N’.
• The engine starts.
If the engine fails to start, the key must be
turned to position ‘0’ before attempting
to restart.
Do not use the starter continuously for
longer than six seconds. Continued use of
the starter will disc harge the battery and
may damage the starter mechanism.
Wait until the engine stops turning before
re-using the starter.
When the engine starts, release the key. The red charge light and the oil pressure
light in the instrument cluster should go
out when the engine is running.
If the engine fails to start
If an ignition key is placed in the ignition
switch and turned to position ‘II’ and the
alarm security light is flashing, it is
possible that the engine will not start.
In any event, please contact a Jaguar
Retailer to investigate the cause of the
light flashing.
It is possible that the fuel system inertia
switch may have tripped, see page 6 - 3
for the resetting procedure.
If the engine persistent
ly fails to start and
flooding is suspected, depress the
accelerator pedal fully, hold it in this
position and turn the key to position ‘III’
for six seconds. Release the key, remove
your foot from the accelerator pedal and
then attempt to restart the engine.
Note: The engine cannot start whilst the
pedal is fully depressed, it must be
released to enable the engine to start.
If the engine still fail s to start, switch the
ignition OFF and contact a Jaguar
Retailer.

4-58 On the Road
Vehicle Suspension
This vehicle is fitted with a fully
automatic air suspension system.
It ensures that the vehicle is always at the
correct ride height with varying load
conditions, including luggage
compartment load or when towing.
The system will automatically adjust the
amount of air in the springs to level the
vehicle. Air is supplied either from an air
reservoir or a compressor.
The compressor will run periodically to
refill the reservoir.
Changes in ambient temperature will also
have an effect on vehicle height when the
vehicle is parked.
Caution:
1. Do not overload the vehicle. Vehicle load weights are shown
on page 8 - 4.
2. A slight air loss is expected over time causing the vehicle to lower,
so do not store or place anything
under the vehicle if it is to be left
for an extended period. Speed lowering
When driving at motorway speeds,
the system will lower the vehicle to
improve aerodynamics and vehicle
stability. The suspension will
automatically return the vehicle to the
normal height when the vehicle slows.
Caution: Speed lowering is
undesirable when towing.
Only Jaguar approved towing
equipment will not allow this feature.
Warning messages
If the message ‘VEHICLE TOO LOW’ is
displayed when the ignition is switched
on, start the engine and wait for the
suspension to raise. The vehicle should
not be driven until the message is
cleared.
If the message ‘VEHICLE TOO LOW’ is
displayed when driv
ing, restrict the
vehicle speed and wait for the system to
regain the correct height and the message
will then clear. If the message is displayed
frequently, it is advisable to inform your
Retailer to have the system attended to.
If the message ‘AIR SUSPENSION FAULT’
is displayed at any time, drive with
caution. Have the vehicle checked by a
Retailer at the earliest opportunity.
Note: If your vehicle needs to be
recovered by a roadside emergency
service ensure that the vehicle is securely
lashed by the wheels and NOT the body.

On the Road 4 - 59
General Driving
Information
!WARNING:
Ensure the parkbrake is on and the
automatic gear selector is in
position ‘P’ or ‘N’ before attempting
to start the engine.
Before driving off, check the gauges and
warning lights and messages. Take special
note of any warning light that is on.
Seat belts are provided for your safety
and it is unwise, and in certain countries
illegal, to commence any journey,
however short, without wearing them.
Warming Up
Do not operate the en gine at high speed
when first started but allow time for the
engine to warm up and the oil to
circulate.
Engine Braking On Downhill
Gradients
When driving on mountain roads with
long downhill gradients it is advisable to
select a low gear.
Running-in
Apart from a few precautionary
recommendations, there are no strict
‘running-in’ procedures for this vehicle.
By observing the following advisory notes
you will ensure maximum engine,
transmission and brake life for your
vehicle:
1. Allow the engine to warm up thoroughly before operating at engine
speeds over 3500 rev/min.
2. Vary the speed frequently.
3. From 940 miles (1500 kilometres) onwards, gradually increase
performance of the vehicle up to the
permitted maximum speed, where
road conditions permit. Running-in for brakes
To ensure that the brake pads can
‘bed-in’ evenly and reach their optimum
wear and performance condition, usually
within 300 miles (480 kilometres),
the following points are recommended.
1. Where possible, avoid heavy braking
or rough usage of the brakes as this
can result in damage being caused to
the brake pads and discs.
2. Avoid prolonged use of the brakes, for example, when descending severe
gradients.
3. Frequent light application of the brakes is desirable. This helps to fully
‘bed-in’ the brake pads before the
normal running-in period is
completed and the vehicle is operated
at high speeds, when maximum brake
efficiency will be required.
The above equally applies when new
discs or pads have been fitted.

4-60 On the Road
Use of Headlamps In Daylight
When visibility is poor the headlamps
with dipped beam setting should be
switched on so that the vehicle may be
seen more easily by other road users.
The instrument illumination dimmer
control adjusts the brightness of the panel
lighting.
Engine Oil Consumption
A certain amount of oil consumption is
normal. The rate of consumption will
depend on the following:
• The quality and viscosity of the oil.
• The amount of oxidation and dilution of the oil.
• Climatic conditions.
• The speed at which the engine is being operated.
• Road conditions.
Drivers should expect above normal
consumption when the engine is new,
and after running-in if high speeds are
sustained.
Winter Driving
Freeing a frozen door lock
Caution: Do not ap ply a proprietary
lock de-icer through the keyhole.
Should the lock beco me frozen, warm the
end of the key before use.
Windscreen wiper blades
Before driving away, clear any ice from
the windscreen and check that the wiper
blades are free. Switching on the heated
screen will accelerate this process.
The heated wiper park, if fitted, will come
on automatically.
Frost precautions
The correct concentration of coolant
must be maintained at all times when
‘topping up’ or ‘refilling’ the cooling
system.
Parking the Vehicle
When leaving the vehicle, remember the
following:
• Whenever the vehicle is being parked, apply the parkbrake and move the
gear selector to Park ‘P’.
• Do not leave children or pets in the vehicle unattended.
• Do not leave luggage or valuables on view. Always take your valuables with
you or lock them in the luggage
compartment.
• Remove the ignition key and spare keys, even when the vehicle is in your
garage.
• When the vehicle is unoccupied, close
all windows and lock all doors
securely.
• Park the vehicle where it can be seen. At night, park in a well-lit area.
• Ensure that the keys and the key transmitters are removed from the
vehicle before locking the doors,
and that all doors, the luggage
compartment and the hood are
closed.