Advanced technology -> Safety belt tensioner for your BMW 5 Series 1995-2003

178nDynamic Stability Control (DSC)  
Safety belt tensioner  
Highly sensors monitor the number of  
revolutions of the wheels, the steering  
angle, lateral acceleration, brake pres-  
sure and the movement of the vehicle  
around its vertical axis.  
You may need some time to become  
accustomed to this system intervention.  
However, it provides optimum drive  
force and vehicle stability.  
The braking intervention is accompa-  
nied by sounds specific to the system.  
If differences in the wheel speeds  
occur, the system counteracts the  
danger of wheelspin by reducing engine  
torque. If necessary, the system also  
responds with additional braking inter-  
vention at all four wheels.  
In addition, DSC permanently monitors  
the vehicle's current operating condi-  
tion and compares it with an ideal  
condition that is calculated from the  
sensor's signals. If deviations from this  
occur (understeering or oversteering,  
for instance), DSC can stabilize the  
vehicle in fractions of a second by  
reducing engine output and with the  
assistance of braking intervention at  
individual wheels. As a result,  
The safety belt tensioner responds to  
severe frontal collisions by tightening  
the belts to ensure that occupants  
remain firmly positioned in their seats.  
A gas-pressure system retracts the  
buckle assembly to tension the  
shoulder and lap belts within fractions  
of a second. This reduces the tendency  
to slide under the lap belt.  
dangerous skids can be prevented even  
as they are just beginning.