2004 JAGUAR XJ main battery

7-16 Maintenance
Battery lead disconnection
Caution:
1. Under no circumstances should a battery be discon nected whilst
the ignition circuit is live,
as permanent damage to the
instrument cluster may occur.
2. Disconnect the negative lead (earth terminal) first.
Fold the luggage compartment floor panel
forwards (see page 6 - 4).
Slacken the negative lead pinch bolt and
disconnect the negative (–) battery lead.
Slacken the positive lead pinch bolt and
disconnect the positive (+) battery lead. Battery lead connection
Note:
Upon battery reconnection the
security system will be armed. Opening
any protected entry will sound the alarm.
Make sure that a key or key transmitter is
available.
Caution: Do not overtighten the
pinch bolts.
Clean the battery posts and coat the post
bases with petroleum jelly.
Connect the positive (+) lead, tighten the
pinch bolt and clip the positive terminal
cover on the battery. Connect the
negative (–) lead and tighten the pinch
bolt.
After the battery ha s been reconnected
and the ignition swit ch is turned to
position ‘II’, the message centre display,
if fitted, will initially show an erroneous
reading i.e.––––––. Thiswill remain
until after the bulb check sequence, when
the correct recorded mileage will be
displayed. This is a normal function of the
instrument cluster.
After battery reconnection
After reconnecting the battery:
• Reset the electric parkbrake; refer to Parkbrake on page 4 - 34. • Reset the electrically operated
windows anti-trap function; refer to
Window Anti-trap Protection on
page 4 - 30.
• The trip computer will lose all recorded trip data and all trip
functions will be reset to zero.
The vehicle total odometer reading is
retained.
• If the battery is disconnected for more than 72 hours the radio preset
channels will need to be reset.
• Where fitted, the TV preset channels may need to be reset. Refer to the
Jaguar Touch-screen Handbook.
• Reset the clock to the correct time.
The engine electronic control system
adapts to certain characteristics of the
vehicle. These adaptations are lost if the
battery is disconnected.
On reconnection, therefore, some slightly
abnormal drive symptoms may occur and
the vehicle may need to be driven
10 miles (16 kilometres) or more while
the control system re-adapts.

Maintenance 7 - 25
Electrical Accessories
!WARNING:
Alterations to the electrical system,
including the fitting of accessories not
designed for this Jaguar, will cause
damage to the electrical circuits and
systems. In some circumstances this
could result in a malfunction or fire.
All accessory work should be
entrusted to a Jaguar Retailer.
Caution:
1. Under no circumstances must the power supply be obtained directly
from either battery terminal.
2. The use of non-approved accessories can reduce the battery
capacity and charge period to an
unacceptable level, therefore,
Jaguar cannot acce pt any liability
for the fitment of any such item.
Earth Points
If an accessory needs to be connected to
an earth point, consult a Jaguar Retailer.
Caution: Under no circumstances
must holes be drilled in the
bodywork to accept earth terminals.

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

Index
Jaguar
– diagnostic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 8
– parts and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 4
K
Key transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 4
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 7
– additional keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 7
– black-headed key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 7
– green-headed valet key . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 7
– integrated transmitter key . . . . . . . . . . . . . . . . . . . . . . . 2 - 7
– key number label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 7
L
Leather upholstery – cleaning . . . . . . . . . . . . . . . . . . . . . 7 - 22
Lights
– approach lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 26
– autolamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 23
– battery saver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 28
– bulb failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 26
– daylight running lights . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 24
– door guard/puddle lights . . . . . . . . . . . . . . . . . . . . . . . 4 - 26
– exit delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 24
– exterior lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 23
– front fog lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 25
– glove compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 26
– hazard warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 27
– headlight convenience . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 24
– interior lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 27
– luggage compartment lighting . . . . . . . . . . . . . . . . . . . 4 - 26
– rear fog lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 25Limp-home mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 45
Locking and unlocking
– auto-relocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 11
– central locking switch . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 9
– child safety locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 14
– drive-away door locking . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 8
– global closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 10
– smart locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 9
– two-stage unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 10
– valet key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 14
– vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 8
Luggage compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 33
– ski hatch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 34
– tie-down loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 33
– underfloor access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 4
Luggage compartment emergency release . . . . . . . . . . . . 2 - 19
M
Maintenance
– regular checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 3
Memory setting – driving positions . . . . . . . . . . . . . . . . . 3 - 31
Message centre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 12
– clearing messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 13
– illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 12
– language selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 12
– messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 16