- Frontal car collision.
- Rear-end collision with a car.
- Side collision.
- Vehicle rollover.
All seat belt retractors have an emergency lock. Under normal conditions, the seat belt retractors are unlocked and do not interfere with the driver and passengers. The pendulum lock locks the retractor coil in the following cases:
- Quick release of the seat belt webbing from the retractor mechanism.
- A sudden change in the speed of the vehicle.
- A sudden change in the direction of the vehicle's movement.
- Driving a vehicle on steep climbs or descents.
The seat belts have an automatic locking function that is activated when the seat belt webbing is completely removed from the retractor mechanism. This function is used, for example, to secure child seats.
Additional passive safety system (SRS or SIR) provides protection for the driver and passengers in addition to seat belts. It consists of a control and diagnostic unit, airbags, seat belt pretensioners (on holders and winding devices) and impact sensors. The control unit determines the severity of the collision based on signals from impact sensors located at strategic points in the vehicle. When the control unit determines a collision, it processes the information and, if the impact is strong enough, sends a signal to activate the appropriate airbags and pretensioners. If the impact is not strong enough, the control unit may activate only the seat belt pretensioners. To analyze the severity of the collision, the passive restraint system control unit converts the change in speed into an electrical signal and compares its value with stored reference values. If the signal value exceeds a set value, the control unit determines the severity of the collision and, based on this, sends a command pulse to the airbags and pretensioners, or activates only the pretensioners. The passive restraint system control unit constantly monitors the system in order to detect any malfunctions. If a malfunction is detected, the control unit sends a malfunction code and provides the corresponding information to the driver via the SRS indicator. The steering column and knee bolsters are designed to absorb impact energy by deforming during a frontal collision to limit the driver's leg movement and reduce the risk of injury to the driver and passengers.
If necessary, for example when placing a child seat in the front seat, the front passenger airbag can be switched off using a special switch.

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