self activating airbag

nigelb · 8th November 2007, 20:03

hi guys any 1 got ideas as to why this happened the drivers side seat airbag decided to go off on its own accord thus causing a lot of noise and smoke ita also activated the rear seat belt pre-tensioners and locked the rear seat belts has anyone had this problem also any ideas cheers guys

Keith · 8th November 2007, 20:08

Well that is a first! assuming you were not bouncing off something solid at the time

Bound to have happened to someone eventually

Were there any previous warnings on the dash?
I remember reading in some cars (tourers) they had a wiring or earthing fault which had something to do with the rear tensioners causing a fault code or lamp, not sure where I read that though

GreyGhost · 8th November 2007, 20:11

Whatever the cause, I'd be thanking the management that it was not drivers side steering wheel bag. Must have been pretty damn scary.

Phil · 8th November 2007, 20:13

A couple of years ago I had this at work on an Accord, it turned out that the customer had driven into something hard a few weeks earlier and had damaged the impact sensors. IIRC

Rincewind · 8th November 2007, 20:24

What was the car doing when the air bag went off and how old is the car? I ask as there were some similar incidents in the early life of the ZT. The car was, under certain load conditions, seeing a pulse that replicated an impact and the DCU deployed a seat airbag because it thought it was having a side impact.

This was caused by hitting a lateral load at a fairly decent speed. This was first noticed during the launch of the ZT's at Pembry as hitting or going over a kerb on the track as you would when racing was enough to trigger the side impact pulse.

If your car saw a pulse similar to this, it could have triggered it. For example a nasty pothole when cornering etc.

Nic

CDTi · 8th November 2007, 20:31

Welcome back Rincewind - you've been missed

Can you shed any light on a query I posted here http://www.the75andztclub.co.uk/foru...ght=suspension

Thanks Nic

Keith · 8th November 2007, 20:31

Hi Nic nice to see you back for a stroll through the threads
Not still in India are you?

nigelb · 9th November 2007, 06:37

the car is a 99 2.0 cdt no warnign on dash except for the useual airbag light on if the passenger seat is moved that normaly cured though by the wire wiggling trick as per nomal on these cars at the time it decided to go bang the car was turning out of a side road at slow speed no pot holes present or bumps the mrs said there was a bit of a burning smell the day before but i drove it about 120 miles the night before ant i could'nt smell any thing

CFS75 · 9th November 2007, 10:23

Quote:

Were there any previous warnings on the dash?
I remember reading in some cars (tourers) they had a wiring or earthing fault which had something to do with the rear tensioners causing a fault code or lamp, not sure where I read that though

The Airbag Warning Light problem on my 75 (saloon) was cured after a poor earth on the rear right pretensioner was found and repaired.

This was back in August 2006 and reported in another place.

Paranoid Carlos · 9th November 2007, 10:25

Where are the impact sensors on 75's ?

8th November 2007, 20:03	#1
nigelb Newbie 75 saloon Join Date: May 2007 Location: cardiff Posts: 12 Thanks: 0 Thanked 0 Times in 0 Posts	self activating airbag hi guys any 1 got ideas as to why this happened the drivers side seat airbag decided to go off on its own accord thus causing a lot of noise and smoke ita also activated the rear seat belt pre-tensioners and locked the rear seat belts has anyone had this problem also any ideas cheers guys

8th November 2007, 20:13	#4
Phil This is my second home Rover 75 CDT Connoisseur SE Join Date: Nov 2006 Location: Wales Posts: 12,227 Thanks: 469 Thanked 523 Times in 241 Posts	A couple of years ago I had this at work on an Accord, it turned out that the customer had driven into something hard a few weeks earlier and had damaged the impact sensors. IIRC __________________

8th November 2007, 20:24	#5
Rincewind Loves to post MINI Cooper S Works (Superchardged not Turbo!) Join Date: Nov 2006 Location: Ashby-de-la-Zouch Posts: 385 Thanks: 9 Thanked 5 Times in 3 Posts	What was the car doing when the air bag went off and how old is the car? I ask as there were some similar incidents in the early life of the ZT. The car was, under certain load conditions, seeing a pulse that replicated an impact and the DCU deployed a seat airbag because it thought it was having a side impact. This was caused by hitting a lateral load at a fairly decent speed. This was first noticed during the launch of the ZT's at Pembry as hitting or going over a kerb on the track as you would when racing was enough to trigger the side impact pulse. If your car saw a pulse similar to this, it could have triggered it. For example a nasty pothole when cornering etc. Nic __________________ Rincewind had been told that death was just like going into another room. *The difference is, when you shout, "Where's my clean socks?", no-one answers* MGR stories, MGR help and advice all available at no extra cost ! The Two Sixties - it's a V8 thing ... Honorary Member and Puddle of V8/4/6cyl Knowledge et al. [SIGPIC][/SIGPIC] Come see who I work for at www.vca.gov.uk without us, the world would be a right mess!

8th November 2007, 20:31	#6
CDTi This is my second home No longer in the MGR club Join Date: Nov 2006 Location: Tipperary Posts: 3,933 Thanks: 35 Thanked 51 Times in 35 Posts	Welcome back Rincewind - you've been missed Can you shed any light on a query I posted here http://www.the75andztclub.co.uk/foru...ght=suspension Thanks Nic __________________ 'Tis better to be silent and be thought a fool, than to speak and remove all doubt.

9th November 2007, 10:25	#10
Paranoid Carlos Posted a thing or two Starlight CDT Conn SE Join Date: Nov 2006 Location: Erdington, Birmingham Posts: 1,057 Thanks: 0 Thanked 0 Times in 0 Posts	Where are the impact sensors on 75's ? __________________ [SIGPIC][/SIGPIC]

8th November 2007, 20:08	#2
Keith This is my second home ZT400 Join Date: Oct 2006 Location: Ellesmere Posts: 5,948 Thanks: 0 Thanked 43 Times in 29 Posts	Well that is a first! assuming you were not bouncing off something solid at the time Bound to have happened to someone eventually Were there any previous warnings on the dash? I remember reading in some cars (tourers) they had a wiring or earthing fault which had something to do with the rear tensioners causing a fault code or lamp, not sure where I read that though

8th November 2007, 20:11	#3
GreyGhost Banned 180+ Sport Auto Join Date: Oct 2006 Location: Bedford Middle Level Posts: 17,787 Thanks: 0 Thanked 18 Times in 5 Posts	Whatever the cause, I'd be thanking the management that it was not drivers side steering wheel bag. Must have been pretty damn scary.

9th November 2007, 06:37	#8
nigelb Newbie 75 saloon Join Date: May 2007 Location: cardiff Posts: 12 Thanks: 0 Thanked 0 Times in 0 Posts	the car is a 99 2.0 cdt no warnign on dash except for the useual airbag light on if the passenger seat is moved that normaly cured though by the wire wiggling trick as per nomal on these cars at the time it decided to go bang the car was turning out of a side road at slow speed no pot holes present or bumps the mrs said there was a bit of a burning smell the day before but i drove it about 120 miles the night before ant i could'nt smell any thing