Jaguar XK. Service manual - part 54

219

Vehicle battery

4. Attach one end of the black jump lead

to the negative (-) terminal of the
booster battery and the other end to
the negative (-) terminal of the vehicle
battery remote charge terminal.

5. Start the disabled vehicle. Allow the

engine to idle for five minutes before
disconnecting the cables.

6. Disconnect the black jump lead from

the negative (-) terminal of the vehicle
battery remote charge terminal and
the booster battery negative (-)
terminal.

7. Disconnect the red jump lead from

the positive (+) remote charge
terminal of the vehicle and the
booster battery positive (+) terminal.

8. Refit the terminal covers, trim panel

and luggage compartment floor
panel.

It may be necessary to reset the electric
parking brake. See ELECTRIC
PARKING BRAKE (EPB) (page 169).Also
See CHARGING THE VEHICLE
BATTERY (page 219).

CHARGING THE VEHICLE
BATTERY

Due to the restricted accessibility of the
centrally located battery, charging of the
battery should be assigned to qualified
assistance.

If the message BATTERY NOT
CHARGING is displayed there is either
an alternator or battery fault. Turn off all
electrical accessories, radio, climate
control etc. Try to use minimum electrical
load as possible such as power windows,
convertible top etc. Seek qualified
assistance as soon as possible.

Effects of battery disconnection

After reconnecting the battery:
• Reset the electric parking brake.
• Reset the electrically operated

windows anti-trap function.

• 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.

• Reset the clock to the correct time.
• Recalibrate the seat memory

positions.

WARNINGS

Ensure that the charger used is of
the correct type and rating for the
battery. Using an unsuitable

charger may damage the battery, and
could cause the battery to explode.

Always charge the battery in a
well ventilated area away from any
naked flames, sparks or other

ignition sources. During charging the
battery can produce a highly explosive
and flammable gas.

CAUTIONS

The battery must be disconnected
and removed from the vehicle
before charging. Failure to do so

could result in damage to the vehicle's
electrical system.

Always follow the instructions
supplied with the battery charger.
Failure to do so may result in

damage to the battery.

Vehicle battery

220

The engine electronic control system
automatically adapts to certain
characteristics of the vehicle. When the
battery is disconnected, these
adaptations are lost.

On reconnection, therefore, some slightly
abnormal drive symptoms may occur and
the vehicle may need to be driven 16
kilometres (10 miles) or more while the
control system re-adapts.

When the vehicle main battery is
disconnected and then reconnected, the
security system immediately returns to
the state that it was when the battery was
disconnected.

Note: Ensure that a remote handset is
available to disarm the system when
reconnecting the battery. Either press the
unlock button on the transmitter, or press
the START/STOP button for
convenience mode.

221

Wheels and tires

GENERAL INFORMATION

Tire markings

1. P indicates that the tire is for

passenger vehicle use.

2. This three-digit number gives the

width, in millimetres, of the tire from
sidewall edge to sidewall edge. In
general, the larger the number, the
wider the tire.

3. The aspect ratio, also known as the

profile, gives the sidewall height as a
percentage of the tread width. So, if
the tread width is 205 mm, and the
aspect ratio is 50, the sidewall height
will be 102 mm.

4. R indicates that the tire is of Radial

ply construction.

5. This two-digit number is the diameter

of the wheel rim given in inches. If you
change your wheel size, you will have
to purchase new tires to match the
new wheel diameter.

6. The load index for the tire. It is a

measurement of how much weight
each tire can support.This index is
not always shown.

7. The speed rating denotes the

maximum speed at which the tire
should be used for extended periods.
See † Speed ratings.

7 8

E80640

Wheels and tires

222

8. US DOT Tire Identification Number

(TIN). This begins with the letters DOT
and indicates that the tire meets all
federal standards. The next two
numbers or letters are the plant code
where it was manufactured, the last
four numbers are the date of
manufacture. For example, if the
number was 3106, the tire was made
in the 31st week of 2006. The other
numbers are marketing codes used at
the manufacturer's discretion. This
information can be used to contact
consumers if a tire defect requires a
recall.

9. M+S or M/S indicates that the tire has

been designed with some capability
for mud and snow.

10. The number of plies in both the tread

area, and the sidewall area, indicates
how many layers of rubber coated
material make up the structure of the
tire. Information is also provided on
the type of materials used.

11. Wear rate indicator. A tire rated at 400

for example, will last twice as long as
a tire rated at 200.

12. The traction rating grades a tires

performance when stopping on a wet
road surface. The higher the grade
the better the braking performance.
The grades from highest to lowest
are: AA, A, B and C.

13. The maximum load, in kilograms and

pounds, which can be carried by the
tire.

14. Heat resistance grading. The tires

resistance to heat is grade A, B or C,
with A indicating the greatest
resistance to heat. This grading is
provided for a correctly inflated tire,
which is being used within its speed
and loading limits.

15. The maximum inflation pressure for

the tire. This pressure should not be
used for normal driving. See TIRE
CARE (page 223).

† Speed ratings

Ratin

Speed kmh

(mph)

160 (99)

170 (106)

180 (112)

190 (118)

200 (124)

210 (130)

240 (149)

270 (168)

300 (186)

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