Mercedes-Benz will be the first German manufacturer to offer steer-by-wire steering in a production model. This technology eliminates the mechanical connection between the steering wheel and the front wheels.
How steer-by-wire works: depending on speed and road conditions, an actuator on the steering wheel (Steering Feedback Unit, SFU) sends a signal to the steering rack (Steering Rack Unit, SRU), which turns the wheels. Since there is no mechanical connection between the steering wheel and the wheels, the reverse force is calculated individually for each model for different driving conditions.
Mercedes-Benz claims that the new driving feel provides "an unrivalled user experience with a range of benefits in everyday use". Handling is improved and manoeuvring and parking become easier. The system reduces the force on the steering wheel and there is no longer a need to grab the steering wheel when parking.
In addition, steer-by-wire offers more freedom in interior design. The steering wheel can be flatter, which creates a feeling of spaciousness and improves the view of the dashboard. It also makes it easier to get in and out: the bevelled lower part of the steering wheel provides more space. In future, in conjunction with conditional and highly automated driving systems, the driver will be able to adopt a more relaxed driving position.
Source: Mercedes-Benz