See also:

The concept
HDC is a downhill driving assistant that automatically controls vehicle speed on steep downhill gradients. Without requiring brake application, the vehicle moves at slightly more than twice wa ...

Increasing or reducing speed
The speed can be changed in the range from approx. 4 mph/6 km/h to approx. 15 mph/25 km/ h by pressing the accelerator or brake pedal lightly. A target speed within the same range can be spec ...

Vehicle battery
Battery careThe battery is 100 % maintenance-free, the electrolyte will last for the life of the battery when the vehicle is operated in a temperate climate. Your BMW center will be glad to advise ...