Jaguar XK. Manual — part 59

239

Wheels and tires

R

Your vehicle may be equipped with a
TPMS which monitors pressure in each
tire (temporary use spare tires are not
fitted with sensors and are consequently
not monitored).

Wheels fitted with a TPMS can be easily
visually identified by the external metal
lock nut and valve 1. All Jaguar
non-TPMS wheels have a rubber valve
fitted 2.

TPMS operation

The TPMS monitors the pressure of the
tires via sensors located in each wheel
and a receiver located within the vehicle.
Communication between sensor and
receiver is via Radio Frequency (RF)
signals.

The tire pressure warning
comprises a yellow warning
telltale within the instrument

cluster and an associated message
within the message centre.

Each tire, including the spare (if
provided), should be checked monthly
when cold and inflated to the inflation
pressure recommended by the vehicle
manufacturer on the vehicle placard or
tire inflation pressure label. (If your
vehicle has tires of a different size than
the size indicated on the vehicle placard
or tire inflation pressure label, you should
determine the proper tire inflation
pressure for those tires).

As an added safety feature, your vehicle
has been equipped with a tire pressure
monitoring system (TPMS) that
illuminates a low tire pressure telltale
when one or more of your tires is
significantly under-inflated.

Accordingly, when the low tire pressure
telltale illuminates, you should stop and
check your tires as soon as possible, and
inflate them to the proper pressure.
Driving on a significantly under-inflated
tire causes the tire to overheat and can
lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life,
and may affect the vehicle’s handling and
stopping ability.

1

2

E91713

AVE FUEL

A

MPG

CHECK TIRE PRESSURE

E93456

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240

L

Please note that the TPMS is not a
substitute for proper tire maintenance,
and it is the driver’s responsibility to
maintain correct tire pressure, even if
under-inflation has not reached the level
to trigger illumination of the TPMS low tire
pressure telltale.

The TPMS may issue a warning if the
under inflation becomes significant.
When driving through variable climatic
conditions the TPMS warnings may be
intermittent.

Your vehicle has also been equipped with
a TPMS malfunction indicator to indicate
when the system is not operating
properly.

The TPMS malfunction indicator is
combined with the low tire pressure
telltale. When the system detects a
malfunction, the telltale will flash for
approximately one minute and then
remain continuously illuminated. This
sequence will continue upon subsequent
vehicle start-ups as long as the
malfunction exists

When the malfunction indicator is
illuminated, the system may not be able
to detect or signal low tire pressure as
intended. TPMS malfunctions may occur
for a variety of reasons, including the
installation of replacement or alternate
tires or wheels on the vehicle that prevent
the TPMS from functioning properly.

Always check the TPMS malfunction
telltale after replacing one or more tires or
wheels on your vehicle to ensure that the
replacement or alternate tires and wheels
allow the TPMS to continue to function
properly.

A supplementary text message will
accompany the system indicator and will
display TIRE PRESSURE SYSTEM
FAULT.

Temporary use spare wheel and
tire change

Should it be necessary to change a wheel
and tire with the temporary use spare,
then the system will automatically
recognise the change in wheel positions.
Then after approximately ten minutes of
driving above 25 km/h (18 mph) , a text
message TIRE NOT MONITORED will be
displayed accompanied by illumination of
the warning telltale and the
corresponding block in the vehicle
graphic.

The warning telltale will initially flash and
will subsequently revert to continuous
illumination. Extended use of the
temporary use spare wheel will produce
an additional text message TIRE
PRESSURE SYSTEM FAULT.

The TPMS display sequence will be
activated at every ignition cycle until the
temporary use spare wheel is replaced by
a fully operational full size wheel and tire
assembly.

Always replace the temporary use spare
wheel before having TPMS faults
investigated. The fault may well be
rectified with the fitment of a fully
operational full size running tire in lieu of
the temporary use wheel and tire
assembly.

CAUTION

When inflating tires, care should be
taken to avoid bending or damage
to the TPMS valves. Always ensure

correct alignment of the inflation head to
the valve stem.

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Wheels and tires

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If a tire needs to be changed

It is recommended that you should
always have your tires serviced by a
Jaguar Dealer.

If a TPMS is fitted, each wheel and tire
assembly, with the exception of a
temporary use spare is equipped with a
tire pressure sensor connected to the tire
valve stem.

In order to avoid damage to the sensor
the tires must be removed and refitted to
the road wheel in a specific manner. Care
must be taken to avoid contact between
the bead of the tire and the sensor during
removal and refitting of the tire, otherwise
the sensor may become damaged and or
inoperable.

Sensors can be removed from the wheel
by the unscrewing of the valve retention
nut.

Replacement sensor fitment
procedure

A replacement sensor must be fitted to a
running wheel in order to be recognised
by the system. Recognition only occurs
when the vehicle is driven above 25 km/h
(18 mph) for approximately ten minutes.

Should the TPMS warning for any wheel
not clear, even after ensuring correct
inflation pressures and driving for more
than ten minutes above 25 km/h (18
mph), contact your Jaguar Dealer.

CAUTION

Valve stem seal, washer, nut, valve
core and cap should be replaced at
every tire change. Valve stem seal,

washer and nut must be replaced if valve
retention nut is loosened. Sensor units
and nuts must be refitted using correct
torques and associated torque profile.
Damage to the vehicle may result if these
precautions are not taken.

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242

L

TPMS information messages

Message

Warning

Lamp

Priority

Indicator

Meaning

CHECK TIRE
PRESSURE
(Graphic indication
displays which tire is
under inflated.)

TPMS

Amber

You should as soon as possible stop,
check your tire and inflate them to the
recommended pressure.

CHECK ALL TIRE

PRESSURES

TPMS

Amber

One or more tire is significantly
under-inflated. You stop as soon as
possible, check your tires and inflate
them to the recommended pressure.
This message may be displayed when
the vehicle is learning a new sensor to
vehicle and one or more tires has low
pressure.

TIRE PRESSURE
SYSTEM FAULT

TPMS

Amber

1. You have fitted wheels and tires
which do not have TPMS sensors. You
should as soon as possible have TPMS
sensors fitted to wheels and tires.

2. TPMS sensors have become
defective, an unapproved accessory is
interfering with the TPMS or a general
fault has been detected in the TPMS.
Contact a Jaguar Dealer as soon as
possible.

TIRE NOT

MONITORED

(Graphic indication

displays which tire is

not monitored.)

TPMS

Amber

You have a temporary use spare wheel
fitted at the corresponding position.

You should limit your vehicle speed to
80 km/h (50 mph) and as soon as
possible replace the temporary use
spare wheel with a correctly inflated full
size tire.

The TPMS sensor, at the corresponding
position, has become defective, an
unapproved accessory is interfering
with the TPMS or you have fitted a
wheel and tire which does not have a
sensor. Contact a Jaguar Dealer as
soon as possible.