Malfunction

A message is displayed in the instrument cluster.

HDC is not available, e.g., due to elevated brake temperatures.

    See also:

    Switching off automatically
    The system switches off and the LED goes out: ▷ After approx. 160 ft/50 m when driving forward. ▷ Above approx. 22 mph/36 km/h when driving forward. Switch on the system again if nece ...

    Required fuel
    Super premium gasoline/AKI 91 This gasoline is highly recommended. Gasoline with lower AKI However, you may also use gasoline with less AKI. The minimum AKI Rating is 89. If you use gasoline wi ...

    The concept
    The system does not measure the actual inflation pressure in the tires. It detects a pressure loss in a tire by comparing the rotational speeds of the individual wheels while moving. In the ev ...