Airbag BLOWN after reset. Is it possible.

[Rtronics]

Hi, last week I did a jeep 2011 Jeep Compass and 6 months ago I did a 2015 Volvo S60.

Bloke rang up today saying he plugged it in and light didn't go off. but when scanned with scanner it showed the same code curtain airbag. after 15 min they went to move the car and bang curtain airbag blew.

Volvo. rang and said plugged in module turned on ignition and curtain blow up. then found out some crash sensor underneath bonnet was faulty.

I'm asking other peoples experiances. I am under the impression that it IS NOT POSSIBLE for airbags to get deployed after clearing right or wrong lines from the eeprom dump. I said that he must have something wrong on the car. I know people who have plugged in water damaged modules that are corroded and shorted and this has still not caused a airbag to deploy.

I had one dickhead mount a module back in the car with a rattle gun. Bang! every airbag and seat belt blew as he activated the crash sensor inside the module with ignition on.

Am I wrong ?

interesting to get peoples feedback on this as I'm sure it will be interesting.

[repairmymodule]

I have NEVER heard of this. This is finger pointing at its finest, most likely from improper handling of powered up module and or install.

I also have had some not so bright guys (3 total so far) bring their vehicles to me to reset module and upon trying to save a few bucks they wanted to remove the module themselves. But of course you cant do that without running the car so you have AC and radio, right? Well to their surprise they blew curtains and belts (they thought because it already had crash, they would deploy) but each caused this to happen by different fuc* ups.

They ALL had their vehicle on to start with, which all airbag systems are only powered with ignition in ON position. The first guy left module plugged in while using an impact driver on bolts, (2010 Nissan Murano, blew both curtains and front belts), the second guy gently removed bolts but then turned module over abruptly to unplug connectors (2012 Nissan Rogue) that also blew curtains and belts. And the last guy that tried to save $50 and R&R his module in his 2013 Mercedes E class bumped his module trying to reach the connector to unplug it (blew both curtains, both front belts and all rear belts).

I have seen guys half-ass install impact sensors and airbag modules (I.E. loosely bolted or even NOT bolted down at all) and cause deployment when hitting potholes and bumps. Or have the car running and make an "adjustment" on the frame machine with a hammer and strike an impact sensor and cause front airbags to deploy. So ive seen my fair share of so called techs accidentally setting off airbags and i can say 99.9% its human error.

There has only been one case of 'spontaneous' airbag deployment ive ever heard of, but this is what I was been told by the guy that did it, so I really do not believe it. He claims he drove the 2009 Nissan Rogue into his shop for an oil change, parked it, took key out, went to the back of the shop and heard a loud bang and to his surprise the curtains and belts had blown. He swears this is true but i highly doubt it.

And I know properly reset modules will work as designed / intended. I have reset the same module more than once on a few occasions from the vehicles being in collision again after the reset. The software inside these modules are self diagnosing, smart systems. If there is an error that will cause malfunction, it will display a corresponding fault code. However it is possible to unknowingly disable this feature by clear wrong data from module and cause airbags to never deploy in any situation. But not the other way around.


So in this case, someone outside of your control f*ucked up somewere and are pointing fingers like humans tend to do

[Rtronics]

the auto electrician just called and I spoke to him. he said that the module was plugged in but not bolted down. so maybe it got a bump when they moved it. FFS some people have no idea and lack common sense...

[keysandmore2228]

umm happened to my twice, one was a Honda crv 2013 and other was a Nissan Rogue 2012 , cann´t explain why, just instaled the modules , and when was moving the cars the laterals curtains blews.

[amlgarA]

The module needs to be screwed in the bbody of the car to make ground contact..this is safety to block all static..moving units is like your car is having a roll over collission, of yoou plug module wrong if a pin with voltage totouch onother pin is like the module is releasing power to fire up airbags.. You ddesolder eeprom or wiring aolder pointsmake sure you did not solder together something else a short. An do not shake module or dropped if this happend wait 3 minutes. Do you see some has a white tube. Thast the trigger oinside is very very sensitive spring . is likhas to be flat position if yku move it 45 degrees bang. A damage impact module also can deployed airbag. And some module you can not see it. Because is a nano trigger....CAREFULL. BUT MOST 99.99% BAD PELROCEDURE..

[mkopytekchi89]

Module was either just plugged in and not bolted down. Or once i had a customer plug module in and bolt down bolts with cordless impact gun and it cause curtains to blow up. As stated by amlgarA improperly mounte dmodules will cause static and they have rollover sensors and can cause custains to blow.

[morfej]

The main reason is for shure that module was not bolted down. Had a guy who plug module (with crash data) to move the car, but did not bold it down. He managed to deploy the airbags in the roof (volvo car).

[autoden]

What about the Fiat. They would show the warning light, then without warning "pop". The AA had advise, if called out with light on they must recover vehicle,,, do not tow, into dealers. If i remember right it was the Brava and Bravo around 2000. One guy picked his car up from service, drove home and parked up. ! hour later, came back to car to find air bag deployed.

[talk2idris]

i would like to share my inputs here

as the problem reported airbag blow after reset,

there mainly 2 chance

1st is the program 25%
2nd is wiring 25%
3rd bad inspection 50%

in every airbag module work we have to do best inspection of wiring and sensor before resetting and re install module,
after that the crash data and clear data verification must be done..
sometimes we read eprom on different selection and write it different selection and bytes change and its blow

hope someone correct me if im wrong ..

[borshch]

I thought only impact sensor can send signal to blow airbags and lock seatbelts. Wow.

So when installing srs Unit definitely have battery disconnected and bolt it down good to ground.

What if before install the module falls or gets hit and than installed ?

[soxten]

I dont think you can blow airbag when modding eeprom memory.
If you adjust somthing in flash file, then it is possible.

If tou do bad solder or bridge 2 pin then it may make som noise...

I think most fult is when installing by privet person or workshop with out any experiens or now how to do it.




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[Rtronics]

ok, I have another interesting question. If the airbag light stays on for what ever reason. example car never been in a crash, system is good, but for arguments sake a person unplugs a seatbelt to activate the airbag light to come on. I have heard some people say that if the airbag light is on showing some fault on the car that it auto disables the airbag system. so if a person did have a car accident while the light was on then the airbags would not deploy. I don't believe that to be true but I'm just asking the question.

[borshch]

.Here in USA, cops or fbi investigated one guy because after his repairs (crash resets ) on srs airbag modules cars got into accident and airbags didn’t deploy.
Don’t know exact story , I tried researching about this incident and didn’t find anything, only found people getting arrested and inprisoned for rolling down mileage odometers

[jp_olli]

Once had an Mercedes Benz airbag module reset. Customer plugged in the module, turned ignition on and all bags blew. Don´t know the circumstances of the happening nothing was wrong with reset though. Maybe a bad crash sensor or module not bolted to the car. Luckily a good insurance covered all the damages.

[vincent1974]

hi
i had seen this hapening with modules not bolted in the chassis.and when you moove the car they deploy.the software simply clear the crash data.
to blow one airbag the unit must receive information from one crash sensor to deploy,or conecting sensors with ignition on
king regards