when should a airbag come out?

Question

my granmother was at a red light and her foot sliped off the brake and hit the gas and she ran into the back of the person in front of her. and her airbag didnt come out.

Answer 1

All vehicle makers have their own parameters for SRS deployment, usually based on negetive accelaration rates vs impact force and usually only armed at 15 mph and above. Like I said, they are ALL different but be thankful it didn't deploy in your grandmothers face.

Answer 2

When you are involved in a frontal collision somewhere in the neighborhood of at least 12-15 mph, a number of things happen very quickly. The sudden deceleration of your vehicle causes 2 SENSORS to send an electrical signal to the diagnostic module. The diagnostic module self tests to confirm that a crash event is taking place, then it allows the signal to trigger the airbag deployment.

Answer 3

Air bags release when the force is great enough to cause the occupant any bodily harm during a crash. They are just now putting air bags into vehicles that are hit from the side but most air bags will only release on a front end collision. The new cars will release the side air bags on a side collision now but still the impact has to warrant it.

Answer 4

It depends on the speed of the vehicles at the time of impact. She must not have been going fast enough for the sensor to determine that it was a serious accident. The cars have to be going something like 25 or so, for them to deploy the air bags. good luck. She also saved herself about 1500 for the air bag replacement.

Answer 5

She didn't hit the car hard enough to trigger the air bag. Good thing, too. They are very expensive to replace.

Answer 6

Depends on how sensitive the factory set the sensor, normally, 10mph and up.

Answer 7

Instantly after a crash. Beware they will scare the crap out of you when they do.