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Z4の取扱説明書・マニュアル [全254ページ 8.04MB]

Technology for driving comfort and safety78Loud sound sources outside or inside the car can drown out the PDC signal. Therefore, always drive cautiously; otherwise, there is a risk of personal injury or property damage. <Driving stability control systemsYour BMW has a number of systems that help to maintain the vehicle's stability even in adverse driving conditions.Antilock Brake System ABSABS prevents locking of the wheels during braking. Safe steering response is maintained even during full braking. Active safety is thus increased.The ABS is operational every time you start the engine. Braking safely, refer to page 114.Electronic brake-force distributionThe system controls the brake pressure in the rear wheels to ensure st able braking behavior.Dynamic Brake Control DBCWhen you apply the brakes rapidly, this system automatically produces the maximum braking force boost and thus helps to achieve the short-est possible braking distance during full brak-ing. This system exploits all of the benefits pro-vided by ABS.Do not reduce the pressu re on the brake for the duration of the full braking application.Dynamic Stability Control DSCDSC prevents the driving wheels from losing traction when you pull away from rest or accel-erate. The system also recognizes unstable driving conditions, for example if the rear of the car is about to swerve or if momentum is acting at an angle past the front wheels. In these cases, DSC helps the vehicle maintain a safe course within physical lim its by reducing engine output and through braking actions at the indi-vidual wheels.The laws of physics cannot be repealed, even with DSC. An appropriate driving style always remains th e responsibility of the driver. Therefore, do no t reduce the additional safety margin again by taking risks, as this could result in an accident. <Deactivating/activating the DSC OFF programThe program can be de activated via Dynamic Driving Control, refer to DSC OFF.For better controlThe indicator lamp flashes: DSC con-trols the drive forces and brake forces.The indicator lamp lights up: DSC has failed.DTC Dynamic Traction ControlThe conceptThe DTC system and the TRACTION program are a variant of the DSC in which forward momentum is optimized.The system ensures maximum forward momentum on special road conditions, e.g., unplowed snowy roads, bu t driving stability is limited.It is therefore necessary to drive with appropri-ate caution.You may find it useful to briefly activate DTC under the following special circumstances:>When driving in slus h or on uncleared, snow-covered roads.>When rocking the vehicle or driving off in deep snow or on loose surfaces.>When driving with snow chains.Deactivating/activating DTC Dynamic Traction ControlThe system and program can be deactivated/activated via Dynamic Driving Control.

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