Integral Active Steering
The concept
Integral Active Steering is a combination of Active Steering and rear axle steering.
Active Steering varies the steering angle of the wheels in relation to the steering wheel movement as a function of the speed.
At speeds up to approx. 37 mph/60 km/h, e.g., in curves, the steering angle is increased, i.e., steering becomes more direct.
The rear axle steering acts to increase maneuverability by turning the rear wheels slightly in a direction opposite to the front wheels.
At higher speeds, the steering angle is increasingly reduced.
The rear wheels are turned to the same angle as the front wheels.
In critical situations, Integral Active Steering can specifically steer the front and rear wheels to stabilize the vehicle before the driver intervenes, e.g., when braking where road conditions differ on the left and right sides of the vehicle.
Initializing
In rare cases, it may become necessary to initialize the Integral Active Steering.
The warning lamp lights up. A
Check
Control message is displayed.
1. With the engine running, turn the steering
wheel all the way to the left and right several
times in a uniform manner until the warning
lamp disappears.
2. Have the system checked if the warning
lamp does not go out after moving the steering
wheel approx. 6 times or if the steering
wheel is at an angle.
Using snow chains
Ensure that the rear axle steering is deactivated when using snow chains
Programs
The system offers two different programs.
The programs can be selected via the Driving Experience Switch
SPORT
Consistently sporty tuning of the Integral Active Steering for greater driving agility.
COMFORT
Balanced tuning of the Integral Active Steering for optimal traveling comfort.
Malfunction
In the event of a malfunction, the steering wheel must be turned further, while the vehicle responds more sensitively to steering wheel movements in the higher speed range.
The stability-enhancing intervention may be deactivated.
Proceed cautiously and drive defensively.
Have the system checked.
See also:
Safety
Both the coupe and convertible have front airbags plus side-impact airbags
built into the front seats. As required of all 2012 models sold in the U.S., the
640i has standard antilock brakes and an ...
Route
Different views of the route are available during
destination guidance:
► Arrow view in the instrument cluster and on
the Control Display.
► List of route sections.
► Map view.
...
Head airbags
In a lateral impact, the head airbag supports the
head. ...