2011 ranger crash at 25-30mph no airbag??? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 01-04-2013
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2011 ranger crash at 25-30mph no airbag???

hey guys,
Its been a while, but i was in a accident with my 2011 ford ranger Sport RWD 4.0L.
Im ok but my back is still jacked up, i was wondering "what would cause an airbag to fail" ??
my mechanic says there's about 10k of damage to the front... What should i do? Someone had mentioned to go after Ford but i love there trucks
Chris
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Old 01-04-2013
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Where did you get hit at? Head on?
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Old 01-05-2013
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i hit the back or there Jeep, i only have frontal damage
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Old 01-05-2013
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Have them test out the airbag system. Should be easy to determine if the system was working correctly.

However, from Wikipedia:

Quote:
U.S. regulations require deployment in crashes at least equivalent in deceleration to a 23 km/h (14 mph) barrier collision, or similarly, striking a parked car of similar size across the full front of each vehicle at about twice the speed.

Unlike crash tests into barriers, real-world crashes typically occur at angles other than directly into the front of the vehicle, and the crash forces usually are not evenly distributed across the front of the vehicle. Consequently, the relative speed between a striking and struck vehicle required to deploy the airbag in a real-world crash can be much higher than an equivalent barrier crash. Because airbag sensors measure deceleration, vehicle speed is not a good indicator of whether an airbag should have deployed
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Old 01-05-2013
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That is interesting and I would like to find out as well. I had a bulb go out, the one for the passenger side airbag, and that led to the airbag light on the dash being on all the time. I fixed it with help from this site but was told that if the airbag light is on your airbags will not deploy.
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Old 01-06-2013
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Here is what you need to do:

Find out the plant at which the truck was made.
Get a hold of that plants quality assurance department and/or supplier quality department and tell them whats up.
They will most likely ask for the ACU to be sent back to the supplier to pull crash data from the computer to see if the crash data met/exceeded the threshold for airbag deployment.

Can you take a picture of the ACU label? I can probably tell you who the ACU manufacturer is by looking at it. (I found a picture of one from ebay and it says made in Canada so its probably manufactured by Autoliv).
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Old 01-06-2013
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Quote:
Originally Posted by meistreguy View Post
That is interesting and I would like to find out as well. I had a bulb go out, the one for the passenger side airbag, and that led to the airbag light on the dash being on all the time. I fixed it with help from this site but was told that if the airbag light is on your airbags will not deploy.
If the Airbag light was on at the time of the accident, The bags would not have deployed.
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Old 01-06-2013
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Quote:
Originally Posted by StxDangerRanger View Post
If the Airbag light was on at the time of the accident, The bags would not have deployed.

This. If the airbag light is on it disables the whole airbag system so as to not create an accidental airbag ejection situation. So that would have been the reason that the airbag did not deploy in your crash.
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Old 01-06-2013
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it was the driver side airbag there is no light to my knowledge
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Old 01-08-2013
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Quote:
Originally Posted by Wreckingball View Post
it was the driver side airbag there is no light to my knowledge
The air bag system is all tied together. So if you had an airbag light on (on your dash) and it had to do with the passenger side the WHOLE system is disabled. Not just the passenger side.
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Old 01-08-2013
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If the forces of the crash didnt exceed the point of triggering the SRS than the airbags wont deploy. Before we start screaming failure you need to realize the SRS does not deploy in every collision, even front end collisions. Amount of damage means nothing, its all about g-forces and deceleration rates. I was in an accident in my F150 last year at approx 35 MPH but because I hit a pretty soft target and the forces never reached max my bags never deployed, I was sore, but my seatbelt did its job and the need for airbags wasnt there.
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Old 01-08-2013
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Quote:
Originally Posted by 01_ranger_4x4 View Post
If the forces of the crash didnt exceed the point of triggering the SRS than the airbags wont deploy. Before we start screaming failure you need to realize the SRS does not deploy in every collision, even front end collisions. Amount of damage means nothing, its all about g-forces and deceleration rates. I was in an accident in my F150 last year at approx 35 MPH but because I hit a pretty soft target and the forces never reached max my bags never deployed, I was sore, but my seatbelt did its job and the need for airbags wasnt there.
This is also true.
There are two crash sensors behind the bumper cover and if they don't detect the right G-force in the right direction, they won't set off the bag.
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Old 01-08-2013
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I would be happy if the airbags did not go off I got hit with them I would have been fine with out them had my seat belt hit a car at 10 mph and and blew them up hut still was saw
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