Principle
The Steering Assistant helps keep the vehicle in
the lane. For this purpose, the system executes
supporting steering movements, for instance
when driving in a curve.
General information
Depending on the speed, the system orients itself
according to the lane markings or vehicles in
front.
If a fault is diagnosed in the system, such as e.g. failure of the
high-pressure sensor, the fuel-supply control
valve is de-energized; the fuel then flows via a so-called bypass into the rail.
In the event of HPI limp-home mode, turbocharging is deactivated by an opening
of the wastegate valves.