Pre-tensioners and load limiters

Pretensioners and load limiters first rewind the front seatbelts in an accident for faster restraint, and then loosen slowly to keep the force applied by the seatbelt from reaching excessive levels.

SEAT BELT PRETENSIONERS AND LOAD LIMITERS

The front seat belts utilize pretensioners, which tighten the belt when the front air bags deploy. And load limiters — another feature built into the front seat belts — know enough to "give" a little if your body puts too much force on the belt.

Double pretensioners and load limiters work with other components of the restraint system to help protect passengers in certain frontal impacts. Always, always wear your seat belt.