VDC / Sport Auto Controls

Discussion in '5 Series' started by Zed, Aug 2, 2015.

  1. Zed
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    Zed

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    Bit of help please as I'm a little unfamiliar with the 5 series wizardry.

    According to the spec list of my car I don't have adaptive drive or vdc but I do have the sports auto box with the switch for normal/sport/sport+ and the idrive allows me to select if this button controls the drivetrain and/or chassis. What exactly does changing this do to the chassis settings if there's no adaptive/vdc?
     
  2. snrbrtsn
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    snrbrtsn WARLORD Site Supporter

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    The modes are all user defined and can be configured via I drive

    Normal mode is normal
    Sport mode (on mine) stiffens the steering
    Sport mode + (on mine) stiffens the steering and gives longer rev range between gear changes

    By flicking gar lever to left, you enter DS sport which also gives longer Rev range between gear changes

    The menus are defined as chassis and drivetrain though is misleading, without VDC no suspension characteristics are changed

    I had it explained to me a while back as I was adamant the suspension changed between modes, though was reliably informed & corrected
     
  3. snrbrtsn
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    snrbrtsn WARLORD Site Supporter

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    Featured as standard: Dynamic Drive Control for individual set-up according to current requirements.
    The BMW 5 Series comes as standard with Dynamic Drive Control ensuring individual set-up of the suspension according to current requirements and preferences. This high-tech system varies the progressive curve of the gas pedal, engine response, the map control line supporting the steering (steering assistance), the shift dynamics of the eight-speed automatic transmission, and the response thresholds of DSC Dynamic Stability Control.
    Dynamic Drive Control is operated by a button on the centre console directly next to the gear selector lever. Pressing this toggle switch, the driver is able to choose among the NORMAL, SPORT and SPORT+ modes, in each case activating a pre-configured and carefully harmonised set-up based on the appropriate settings of the drivetrain and suspension components.
    On the road the differences between the individual modes are clearly noticeable, the SPORT mode, for example, providing far more direct steering behaviour and ensuring an even more spontaneous and direct response to the gas pedal.
    A further significant point is that Dynamic Drive Control allows individual configurations in the SPORT mode. In principle, this mode gives both the drivetrain and suspension functions a sporting set-up. Through the iDrive control system the driver is also able to influence one of these two factors, returning in this way to the usual configuration in the NORMAL mode. This allows the driver to enjoy, say, a more sporting set-up of the drivetrain components while deliberately not choosing a harder set-up of the dampers due to bad road conditions.
    Another button directly in front of the mode toggle switch serves to choose the appropriate DSC settings. Pressing this button, the driver is able to activate a special traction mode facilitating, say, the process of setting off on snow.
    This is done through DTC Dynamic Traction Control as a special mode of DSC, which raises the response thresholds of the driving stability system.
    The DTC function of Driving Stability Control is also activated in the SPORT+ mode, serving in this case to provide slight slip on the drive wheels for taking a bend in a controlled drift or powerslide.
    Keeping his finger on this additional button somewhat longer, the driver is able to deactivate DSC completely. In this DSC-Off mode an electronic locking function acts on the rear axle differential, enhancing a sporting and ambitious style of motoring, for example when accelerating out of a bend or hairpin. To optimise traction under such conditions a drive wheel spinning when accelerating out of a tight bend is slowed down precisely as required by the brakes, allowing the opposite wheel on the same axle to maintain the drive power and traction required.

    Special option for greater dynamics and additional comfort: Adaptive Drive.
    As an option the BMW 5 Series is available with Adaptive Drive combining the electronically controlled dampers and the car’s active anti-roll stability system. The innovative dampers used in this case adjust both to road conditions and the driver’s style of motoring in order to prevent any undesired movement of the vehicle caused by bumps on the road or a high level of lateral acceleration.
    The driver is able to adjust the damper control map via Dynamic Drive Control, choosing from a comfortable, a normal and a sporting set-up. This is also why Dynamic Drive Control interacting with Adaptive Drive also comes with the COMFORT mode.
    BMW is the world’s first car maker to use a damping system with infinite and independent adjustment of the inbound and rebound strokes, with a unique combination of a firm suspension set-up and, at the same time, a comfortable response to bumps and unsmooth surfaces on the road.
    With these dampers, the up-and-down movement of each wheel is determined by sensors and reported to the central control unit, taking these data and signals on the car’s ride height to determine any movement of the body. Making allowance also for road speed and the damper setting chosen by the driver, the system then calculates the damper force required on each wheel in order to set off body movements.
    The data used for this purpose is fed to the dampers in intervals of just 2.5 milliseconds, with actual and target settings being established individually on each wheel by controlling the inbound and rebound stroke valves in the dampers.
    Active anti-roll stabilisation likewise included in the optional Adaptive Drive function reduces body sway in fast bends and under a sudden change of direction. Taking current driving conditions into account, sensors determine the side angle of the body and swivel motors in the anti-roll bars front and rear quickly and precisely counteract the forces recorded, significantly improving the car’s steering and load change behaviour in the process. A further advantage is that side roll is largely eliminated also with bumps on just one side of the road, again significantly increasing the standard of driving comfort.
     
  4. Zed
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    Zed

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    Thanks for that. As you say, having a chassis option on the idrive is misleading. Fortunately I'm quite happy with my standard set up though a low speed ride akin to the E65 would have been nice!
     
  5. Spuffington
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    Spuffington Moderator WARLORD Site Supporter

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    You're not the first one to be confused by this. Can't help being a little cynical of BMW's intentions of setting up their systems in this way. But what it does do is prove the placebo effect since there are plenty of people convinced that their suspension firms up when all that happens is the steering map is tightened!
     
  6. Zed
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    Zed

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    You say placebo effect I think Emperors New Clothes. ;)
     

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