cooling JAGUAR XJ 2004 X350 / 3.G Owners Manual

4-4 On the Road
Engine Temperature (E)
Drive at moderate road and engine
speeds until normal operating
temperature is reached. This is indicated
when the pointer is between the
blue (cold) segment and the red (hot)
segment.
The engine operating temperature will
vary with changes in weather and engine
load. The engine temperature may rise in
some circumstances, such as:
• Idling for long periods in slow moving traffic.
• Driving up a long hill in hot weather.
• Driving slowly or stopping after driving at high speed.
• Towing a trailer or caravan.!WARNING:
1. The radiator cooling fans may continue to run after the ignition
has been switched off but will
automatically switch off when the
engine has cooled sufficiently.
2. It is unsafe to run the engine in an overheated condition.
3. Do not remove the coolant reservoir filler cap while the
engine is hot. If it is essential, then
protect your hands against
escaping steam. SLOWLY turn the
cap anti-clockwise to allow the
steam pressure to escape
completely before removing the
cap. Should the pointer move into the red
segment (
H) of the coolant gauge, stop
the vehicle as soon as it is safely possible,
turn off the engine and open the hood to
allow the engine to cool.

On the Road 4 - 21
CRUISE
ENGAGED None None Displayed when cruise control system is operating.
CRUISE
CANCELLED None None Driver has cancelled cruise control or is braking.
CRUISE
OVERRIDE None None Driver is pressing the accelerator pedal.
The following messages only apply to vehi cles fitted with adaptive cruise control.
DRIVER
INTERVENE Red Action by the driver to ap
ply the brakes is required.
SETSPEED
XXX MPH (or km/h) None Speed set for adaptive cruise control.
GAP None Set the distance (time gap).
ACC SENSOR BLOCKED Amber Clean the front of the vehicle in the area of the sensor unit (the sensor is mounted
behind the left-hand cover in the lower cooling air inlet).
Message
Warning
Light Priority
Indicator Meaning

On the Road 4 - 45
Limp-home mode
In the unlikely event of an electrical or
mechanical failure, transmission
operation will be impaired. The vehicle
gear selector ranges P, R, N, D can still be
used to enable the vehicle to be driven to
a safe area. In this event consult a Jaguar
Retailer immediately.
!WARNING:
The driver should be aware that the
vehicle’s performance will be
reduced and must take this into
account when driving.
Sport Mode
The switch marked ‘S ’ on the ‘J’-gate
surround enables the driver to select
either normal or sport (S) modes.
When sport mode is selected the
automatic transmission will operate
normally, but the ge arshift points are
extended to make full use of the engine’s
power reserves.
To select ‘Sport’, press the switch. A red
light within the switch is illuminated to
indicate that sport mode has been
selected.
To cancel ‘Sport’, press the switch again. Note:
Both sides of the ‘J’-gate can be
used irrespective of the transmission
mode, e.g. with ‘S’ selected the
transmission can be operated in full
automatic or by manual selection.
In addition to norm al and sport modes,
the transmission control computer will
select shift patterns to suit specific
conditions.
Cruise Control – When cruise control is
operating at set speed the transmission
selects a shift pattern to suit cruise
control operation.
DSC – When DSC is switched ON and the
system is activated, the transmission
selects a shift pattern to suit traction
control conditions.
Gradients – When the vehicle is being
driven on roads with uphill gradients,
the transmission adapts the shift pattern
to make better use of engine power and
aid engine cooling.
Note: Under the conditions described,
the relevant transmission mode will
override the normal or sport modes
selected by the driver.
When such conditions no longer exist,
the transmission will revert to the shift
pattern previously selected by the driver,
that is, normal or sport.

On the Road 4 - 51
Adaptive Cruise Control (ACC)
(Where fitted)
The adaptive cruise control system is designed to aid the driver
to maintain a gap from the vehicle ahead or a set road speed if
there is no slower vehicle ahead. The system is intended to
provide enhanced operation of th e vehicle when following other
vehicles which are in the same lane and travelling in the same
direction.
!WARNING:
Adaptive cruise control is not a collision warning or
avoidance system. Additionally , adaptive cruise control
will not detect:
1. Stationary or slow moving vehicles below 6 mph (10 km/h).
2. Pedestrians or objects in the roadway.
3. Oncoming vehicles in the same lane. The adaptive cruise control system is based on the use of a radar
sensor which projects a beam directly forward of the vehicle so
as to detect objects ahead. Th e radar sensor is mounted behind
a cover on the left-hand side of the lower cooling aperture,
to provide a clear ‘view’ forward for the radar beam.
• Only use adaptive cruise control when conditions are favourable, that is, straight, dry, open roads with light traffic.
• Do not use in poor visibility, specifically fog, heavy rain,
spray or snow.
• Do not use on icy or slippery roads.

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.

Roadside Emergency 6 - 25
F19 ATO 25A Natural Starter solenoid
F20 ATO 30A Green ABS module (pump)
F21 Not used
F22 ATO 30A Green ABS module
F23 Not used
F24 ATO 20A Yellow Throttle motor
F25 ATO 15A Blue Horns
F26 ATO 40A Orange Wiper system, front electronics module (FEM)
F27 – F29 Not used F30 ATO 10A Red Ignition coils
F31 ATO 15A Blue Intercooler water pump (supercharged engines)
F32 ATO 40A Orange Left-hand front screen heater
F33 ATO 30A Green ‘A’ bank heated oxygen sensors
F34 ATO 30A Green ‘B’ bank heated oxygen sensors
F35 Midi 80A Radiator cooling fan
Fuse No
Fuse
Type Rating
(amps) Colour Circuit

7-10 Maintenance
Check Windscreen/Headlight
Washer Reservoir
Refer to page 7 - 5 for windscreen washer
reservoir location.
The washer reservoir contains the fluid
for the windscreen washers and the
headlight powerwash system (where
fitted).
Fill to just below th e neck with Jaguar
Windscreen Washer Fl uid diluted with
clean, preferably soft water as specified in
the instructions on the bottle.
Do not overfill.
Note: Using a non-approved fluid may
adversely affect the wiper blade rubber,
resulting in ineffectual and noisy wiping. Cold weather precautions
To prevent damage to the pump during
freezing conditions, use Jaguar
Windscreen Washer Fluid at the strength
shown on the bottle, for the anticipated
ambient temperature.
!WARNING:
1. Windscreen washer fluid is toxic and in concentrated form is
flammable. Be sure to observe all
warnings indicated on the washer
solution container.
Under no circumstances must
cooling system anti-freeze be
used, since this will damage the
paintwork.
2. State or local regulations on volatile organic compounds may
restrict the use of methanol,
a common windscreen washer
anti-freeze additive. Washer fluids
containing non-methanol anti-
freeze agents should be used only
if they provide cold weather
protection without damaging the
vehicle’s paint finish, wiper blades
or washer system.

Maintenance 7 - 11
Check Coolant Level
Refer to page 7 - 5 for coolant header tank
location.
The coolant level MAX and MIN
indicators are located inside the reservoir
and are only visible when looking into the
filler neck with the cap removed. Check
the level only when the engine is cold.
The coolant level shou ld be between the
MAX and MIN indicators. If persistent
coolant loss is noticed, have a Jaguar
Retailer investigate the cause
immediately.
!WARNING:
Do not remove the coolant header
tank filler/pressure cap while the
engine is hot. If the cap must be
removed, protect the hands against
escaping steam and slowly turn the
cap anti-clockwise until the steam
starts to escape. Leave the cap in this
position until the pressure is
released, and then remove the cap.
Topping up
!WARNING:
Do not allow anti-freeze to make
contact with skin or eyes. If this
happens, rinse the affected area
immediately with plenty of water.
Caution: Anti-freeze will damage
paintwork. Avoid spillage.
Top up with a mixture of 50% water and
50% anti-freeze until the coolant is
between the MAX and MIN indicators
inside the header tank. Use anti-freeze to
specification WSS M97B44, coloured
orange, Extended Life Coolant.
Refit the filler cap and hand-tighten
securely until the ratchet operates. Engine anti-freeze
When used at the correct concentration,
anti-freeze not only protects the engine
from frost damage in winter, it also
provides all year round protection against
internal corrosion.
The cooling system should always be
topped up or refilled with the specified
anti-freeze at the correct concentration.
This 50/50% mixture gives frost
protection for temperatures down to
–40°F (–40°C).
Do not mix any other anti-freeze with
that specified; inferior quality anti-freeze
may be ineffective in maintaining
adequate frost and corrosion protection
to the cooling system.
The coolant solution
may remain in the
cooling system for five years or
156,000 miles (250,000 km) after which
the system should be drained, flushed
and refilled.
Engine block heater
For further information consult your
Jaguar Retailer.
Caution: The fitting of an engine
block heater does not eliminate the
need for anti-freeze under freezing
conditions.