See also:

Starting Roadside Assistance with BMW Assist or TeleService
General information In vehicles equipped with TeleService, support is first offered by TeleService Diagnosis and then, if necessary, by TeleService Help. 1. "BMW Assist" or "Conne ...

BMW X3 iDrive Owners Manual
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The concept
HDC is a downhill driving assistant that automatically controls vehicle speed on steep downhill gradients. The vehicle moves at approximately walking speed without braking intervention by the ...