Jaguar XK. Service 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

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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

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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.