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 event of a pressure loss, the diameter and therefore the rotational speed of the corresponding wheel change. This is detected and reported as a flat tire.
See also:
Deactivating HDC
Press the button again; the LED goes out. HDC
is automatically deactivated above approx.
37 mph/60 km/h. ...
Initialization
The initialization process adopts the set inflation
tire pressures as reference values for the detection of a flat tire.
Initialization is started by confirming
the inflation pressures.
Do not ...
Checking the engine oil level
Your car is equipped with an electronic engine
oil level check.
Requirements
▷ The engine must be running and warm after
the vehicle has been driven for at least
6.2 miles/10 km.
▷ ...