Tire Monitoring System: Description and Operation: Overview

Tire Pressure Monitoring System (TPMS)

TIRES
Care must be taken when removing and refitting tires to ensure that the tire pressure sensor is not damaged.









When removing the tire, the bead breaker must not be used within 90 degrees of the tire valve in each direction.
When using the tire removal machine, the fitting arm start position must be positioned as shown in the tire changing illustration. The wheel can then be rotated through 180 degrees in a counterclockwise direction. This will relieve the high tension from the tire bead allowing the remaining 180 degrees of the tire to be manually pulled from the rim.
When refitting the tire, position the fitting arm as shown. Rotate the tire and take care that the bead on the low tension side of the tire does not damage the sensor.

Run-Flat Tires
Run-flat tires can be handled, fitted and removed using the same principles as used for normal low profile and high-performance tires, with two exceptions:
- They are always fitted with tire pressure sensors.
- They have thicker bead cores and more rigid sidewalls which require special care when being mounted on the rims.
It is recommended that the tire fitting machine is fitted with plastic rollers for the upper and lower bead. This will ensure that the bead is removed gently, protecting the rims and the tire pressure sensors.
Adequate amounts of special fitting lubricant must be used to ensure that the sidewalls move with the minimum exertion and locate on the rim flange correctly.
Run-flat tires can be identified by the marking 'RSC' on the tire sidewall.

NOTE:
Vehicles fitted with run flat tires are supplied with a spare wheel, vehicle jack and wheel brace.

Tread Act - NAS Only
Vehicles supplied to the North American markets must comply with the legislation of the Transport Recall Enhancement, Accountability and Documentation (TREAD) act. Part of the requirement of the TREAD act is for the vehicle to display a label, positioned on the driver's side B-pillar, which defines the recommended tire inflation pressure, load limits and maximum load of passengers and luggage weight the vehicle can safely carry. This label will be specific to each individual vehicle and will be installed on the production line.
This label must not be removed from the vehicle. The label information will only define the specification of the vehicle as it came off the production line. It will not include dealer or owner fitted accessory wheels and tires of differing size from the original fitment.

NOTE:
If tires and wheels of a non-standard size are fitted to the vehicle, the car configuration file must be updated using a Jaguar approved diagnostic system.
If the label is damaged or removed for body repair, it must be replaced with a new label specific to that vehicle. A new label is requested from Jaguar parts and will be printed specifically for the supplied VIN of the vehicle.