Seat belt pretensioner bypass If you have an accident a sensor measures very sudden decelerationof the car and activates th eair bags, also it activates the seat belt pre-tensioners. If you have a sedan you can leave the seat belt attached to the seat. The purpose of the pretensioner is to secure the occupant safely to their seat by tightening their seat belt, in order to reduce the risk of an injury. A single chime will sound to signify that your life is in your own hands. The code description you give (and attribute to the brake system) is for the passenger air bag. This can be identified by contacting the original vehicle manufacturer or looking at the retractor where the seat belt winds back onto. The seat belt pretensioner is one of many actuators involved in a pre-crash safety system. Apr 6, 2011 · The airbag code 34 on my 2008 F150 did indeed have to do with the passenger side pretensioner. Order today and save! We rebuild all seat belt types: Buckle Pretensioners; Seat Belt Pretensioners Apr 14, 2008 · Remove the seat headrest, tilt the steering wheel up and push it all the way in. Solution: Check inside the seat belt buckle for foreign objects and remove them. fidxnyqxnjmvglnbhoyefioefgzsfcjvwbaqeuuyqedbstjmvxfhfkhumhzxouhocttsnoehvgslyuwciw