World debut: data transfer via FlexRay

The FlexRay high-speed data transmission system is used for the first time in the industry for fast and reliable coordination of all AdaptiveDrive functions. FlexRay has been enhanced to production standard by a consortium of development companies under the leadership of BMW. This system offers a level of data transfer capacity never seen before. The new BMW X5 is the first vehicle in the world to feature FlexRay technology.



Even more precise: intelligent BMW xDrive all-wheel-drive technology standard in every BMW SAV

The new BMW X5 remains sure-footed and agile in every situation and on every surface thanks largely to BMW's intelligent, full-time xDrive all-wheel-drive system. Under normal driving conditions, drive forces are spread out front-to-rear in a 40 : 60 split. Reacting extremely quickly and precisely, xDrive ensures variable power distribution front-to-rear as soon as a specific driving situation or surface conditions require.

To perform this function, BMW xDrive features a center differential with an electronically controlled multiple-plate clutch which feeds the power of the engine to where it can be used to best effect. Hence, this all-wheel-drive system, which was introduced by BMW, offers a level of security in spirited driving. It works to counteract any over- or understeer in bends immediately by moving power to the front or the rear as required to help stabilize the vehicle.

BMW xDrive supports yet another feature typical of the BMW X5 by ensuring maximum traction on difficult surfaces. Here again, variable control instantaneously shifts drive power to the axle with better grip thereby ensuring maximum stability and traction under all circumstances.

These many qualities of BMW's electronically controlled all-wheel-drive system give not only the BMW X5 and X3 SAVs, but rather all BMWs equipped with xDrive truly outstanding driving qualities at all times. The system is recognized as so beneficial that BMW has now become the world's most successful manufacturer of all-wheel-drive vehicles in the premium segment.



Integrated Chassis Management for optimum control quality

To distribute drive power quickly and with maximum precision, xDrive all-wheel drive, DSC, engine management and Active Steering are all networked with one another via Integrated Chassis Management, which ensures an optimum balance of drive power distribution, individual application of the brakes on each wheel, and engine management.

This symbiosis of fully harmonized suspension and chassis management sets the foundation for driving dynamics and active safety of the highest all-round standard.



DSC with new functions, faster and even more precise hydraulic control

Boasting an even higher standard of performance for optimum comfort, convenience and function, Dynamic Stability Control on the new BMW X5 makes a particularly important contribution to safe and active driving. The basic functions of the overall DSC system include ABS brakes, Automatic Stability Control, Dynamic Stability Control, Hill Descent Control, Dynamic Brake Control which maximizes brake pressure whenever required for particularly powerful deceleration, Cornering Brake Control which helps to prevent the vehicle from "turning into" a bend when applying the brakes lightly and - as the name implies - Trailer Stability Control.

Automatic Differential Brake, another highly sophisticated electronic system, helps keep the driver in control by automatically applying the brakes on a wheel about to lose traction.

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