This system employs the world's most comprehensive and sophisticated sensing technologies to monitor the position of the front passenger, while other sensors detect the passenger's weight, the position of the driver in relation to the steering wheel and the usage - or not - of safety belts. A.R.T.S. has the capability to sense the severity of a collision and deploy the vehicle's passive safety system.

All XJs are also equipped with an advanced tire pressure monitoring system to enhance vehicle safety, and provide extra peace of mind for driver and passengers. Unlike some other systems, which use a car's anti-lock brake sensors to detect drops in tire pressure, Jaguar's system uses radio frequency transmitters.

This allows each tire - including the spare - to be accurately and precisely monitored. And, unlike the ABS-based systems, it can detect if all four tires lose pressure gradually. If the pressure in any of the five tires drops by 25 percent of the recommended threshold, a warning light on the instrument cluster flashes.

Laminated side glass fitted to all JAGUAR XJs aids in safety as well as reducing interior noise levels. Featuring two layers of laminated glass separated by an ultra-thin acoustic interlayer, the laminated side glass makes 'smash and grab' thefts more difficult. The plastic interlay between the glass also reduces harmful UV rays, which can deteriorate interior trim.

For 2007, Bluetooth wireless technology for mobile phones becomes standard on all JAGUAR XJ models.

With the Bluetooth wireless module installed, an owner's compatible Bluetooth capable cell phone automatically links with the car's system, allowing safe and easy, hands-free cell phone operation.

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