CMBS and E-pretensioner Operation: E-Pretensioner
WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
The mechanical portion of the E-pretensioner consists of the motor and the gear sections. The collision mitigation braking system and the brake assist system sends signals to the motor in the retractor to retract or rewind the belt. If the system judges that the driving situation is safe, the tension on the seat belts is released.
The E-pretensioners used in conjunction with the conventional tensioners.