Advanced Head Protection System (AHPS): Notes
New for the E65 is the Advanced HPS, (AHPS) an extended head airbag. The ITS Inflatable Tubular Structure familiar from other BMW models has been extended by a curtain.
There are two versions of the AHPS.
AHPS for front passengers only
The Advanced HPS I is for the head area of the driver and passenger. It runs from the A-pillar to behind the B-pillar, as before. The volume is approx. 12 liters.
Optional AH PS for front and rear seat passengers
When rear airbags are ordered as an option (SA 261), there is the Advanced HPS II for the head area at the front and rear. The AHPS II runs from the A-pillar to the C-pillar and covers the entire side section. The volume is approx. 24 liters.
In conjunction with the side airbags in the front and rear doors, it provides optimum side protection for all passengers. The Advanced HPS prevents the head and other extremities of the occupants from swinging outward. This leads to less severe neck backlash forces and less severe head injuries.
Advantages of the system:
- Extended covered area for side windows front and rear.
- Protection against glass splinters and penetrating objects.
- Improved protection area for any size occupants.