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> Airbags: Front Passenger Airbag Removal
GialloEvo94
post 11th April 2010 19:38
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While it's not a particularly difficult job to do, for anyone needing (or wanting) to remove their passenger airbag for any reason, here's a quick guide on how to do it. I wouldn't recommend doing this unless you have a specific need because it obviously has safety implications, however there are actually some occasions when you do need to remove it either permanently or temporarily i.e. if the car is only used on track and you need to save some weight (the passenger airbag unit weighs 2.6kg), or you need to put a rear-facing baby seat in the front of the car like I do which needs the airbag to be disabled (or better still, completely removed to be sure it will never go off by accident).

Tools Required
  • Stubby Cross-Headed Screw Driver
  • 4mm Allen Key
Parts Required
  • Airbag Connector Terminating Resistor (3.3 Ohms)
  • Non-Airbag Dashboard Trim Strip


Step-by-Step Guide (click individual pictures for a full size view)

IMPORTANT: Before you start this job, disconnect BOTH leads from the battery terminals and tie them together for 5 minutes. The leave the leads disconnected from the battery for the entire duration of this job. This will ensure that any power in the system, or stored in capacitors in some of the components is completely drained. This always needs to be done when working around ant of the airbag connectors to avoid the an open-circuit fault being detected and the dreaded airbag light being triggered requiring a 40 reset at the dealers. With no power to the airbag ECU, it will not be able to detect an open circuit on any connectors so will not log a fault that would normally trigger the airbag light.
  1. Locate the airbag unit in front of the passenger seat which is cleverly labelled "SRS Airbag" biggrin.gif

    Attached File  PassengerAirbagRemoval01.jpg ( 132.11k ) Number of downloads: 271


  2. Have the piece of dashboard trim to hand that is needed to go in place of the airbag unit.

    Attached File  PassengerAirbagRemoval02.jpg ( 181.45k ) Number of downloads: 147
    Attached File  PassengerAirbagRemoval03.jpg ( 139.63k ) Number of downloads: 132


  3. Remove the cross-headed screw on the end of the existing trim.

    Attached File  PassengerAirbagRemoval04.jpg ( 113.19k ) Number of downloads: 138


  4. Pull off both pieces of trim to the left and right of the airbag unit (these are just held in with spring clips so pull forward on them hard and they will come away), then disconnect the electrical airbag connector and plug it into the terminating resistor. I'm using an official airbag terminating block which is fitted to pre-facelift cars where the passenger airbag was an optional extra but you can get away with using a standard 3.3 ohm resistor (available from somewhere like Maplins in the UK) as long as you make sure it is connected in such a way that it cannot come loose or disconnected otherwise you will end up with the airbag light coming on and a 40 charge to get it reset by the dealers.

    Attached File  PassengerAirbagRemoval05.jpg ( 130.07k ) Number of downloads: 168


  5. Remove the 4 allen key bolts to the left and right of the airbag unit (4mm hex head).

    Attached File  PassengerAirbagRemoval06.jpg ( 145.47k ) Number of downloads: 150
    Attached File  PassengerAirbagRemoval07.jpg ( 143.93k ) Number of downloads: 143


  6. The airbag unit will now just lift out.

    Attached File  PassengerAirbagRemoval08.jpg ( 120.09k ) Number of downloads: 145


  7. Fit the replacement non-airbag trim by simply pushing it into the dashboard to locate the spring clips and then refit the cross-headed screw on the end of the trim panel.

    Attached File  PassengerAirbagRemoval09.jpg ( 139.14k ) Number of downloads: 127


  8. Reconnect the battery terminals.
Job done biggrin.gif

Oh...and many thanks to Gio (buellboy) for supplying me with the non-airbag dashboard panel thumbsup.gif


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langers
post 11th April 2010 20:01
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Good write up there as always Gary.

How do you just dis-able the passenger side air bag? The bulb on my new red one (same as yours) is lit just for the passenger side. I haven't had a poke around yet.


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GialloEvo94
post 11th April 2010 20:27
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QUOTE(langers @ 11th April 2010 21:01) *
How do you just dis-able the passenger side air bag? The bulb on my new red one (same as yours) is lit just for the passenger side. I haven't had a poke around yet.

What do you mean lit just for the passenger side? There is only one airbag light in the instrument cluster which is the fault light for whole airbag circuit. If it's lit then it's most likely dodgy airbag connectors under the front seats (common problem). You need to reseat the connectors (unplug and replug) and then put cables ties around them longways to stop them moving or coming apart again then nip down to the dealers and have the airbag ECU reset so the light goes out.

If you just want to disable the passenger airbag and not actually remove it then you need to put in a terminating resistor (3.3 ohms) as described in step 4.


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langers
post 11th April 2010 20:32
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b**ger then!

Ok, I will nip down Maplins. Thanks again.


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NaanBread
post 11th April 2010 20:38
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MWT do a diagnostic check for 10 and he might just delete the airbag fault for you when you have reset the connectors etc biggrin.gif


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GialloEvo94
post 11th April 2010 20:38
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QUOTE(langers @ 11th April 2010 21:32) *
Ok, I will nip down Maplins.

The other option is to try and find someone breaking a pre-facelift 145/146 which has no airbag fitted and get the official terminating block from them which is much neater (this is what I did and you can see it clearly in the first picture of step 5 - the yellow block on the left). I'm not sure why but for some reason the terminating block doesn't seem to be available from the dealers as a separate part unsure.gif


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Hybrd
post 12th April 2010 12:52
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Just as a heads up, when i removed the QV interior from the donor car, the air bag unit was held in with 4 M6 bolts as opposed to 4 4mm allen bolts. unsure.gif

Nice right up GE thumbup.gif


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930Tech
post 13th April 2010 20:29
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Nice and clear GE.

Do you have a picture of the air bag itself?

Or more the black plastic cover with 'SRS AIRBAG' on it?

I was wondering if this cover will come off.
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GialloEvo94
post 13th April 2010 20:36
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QUOTE(E500 TAT @ 13th April 2010 21:29) *
Do you have a picture of the air bag itself?

Or more the black plastic cover with 'SRS AIRBAG' on it?

I was wondering if this cover will come off.

It's in the loft right now but I'll get it down and have a look / take some photos.


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GialloEvo94
post 14th April 2010 00:28
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QUOTE(E500 TAT @ 13th April 2010 21:29) *
Do you have a picture of the air bag itself?

Or more the black plastic cover with 'SRS AIRBAG' on it?

I was wondering if this cover will come off.

The cover *should* come off with a bit of work (see pics below - click each one for a larger view). There are 10 anti-tamper nuts holding the airbag gas canister assembly to the plastic covering panel. I'm not sure how tight these are but I'm sure you'll get them off if you use something like mole grips and clamp them onto the side of the nut really tightly. Failing that, a nut splitter will probably work if you can get one on.

Attached File  PassengerAirBagModule01.jpg ( 138.93k ) Number of downloads: 124
Attached File  PassengerAirBagModule02.jpg ( 117.32k ) Number of downloads: 116

Attached File  PassengerAirBagModule03.jpg ( 106.8k ) Number of downloads: 111
Attached File  PassengerAirBagModule04.jpg ( 115.25k ) Number of downloads: 106


Out of interest, what do you need to use the airbag covering panel for? If you'retrying to get rid of the passenger airbag then why don't you just do what I did and replace the complete trim panel which will be much neater? There are plenty of people breaking their cars so someone is bound to have one.


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930Tech
post 14th April 2010 09:56
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I've got a passenger airbag in the yellow car and the space it takes should be enough to mount a 7" tv screen i have.

I use this when i go off to the ring, keeps me entertained when waiting for boat and when track closed.

I'm thinking of mounting it there and refitting the cover so it looks normal.

I just have not got around to taking mine apart yet, the battery has been off this for months so i might have a go at this weekend whilst there is no power in it.

Cheers gary.
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930Tech
post 14th April 2010 09:58
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It looks well bolted on, i suppose it's so the cover does not hit you in the face and the bag bursts through it.
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930Tech
post 15th April 2010 22:57
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Thanks for a good guide gary.

All came off no problem.

Got the cover off the airbag too, but not without a fright, i could not get the nuts off that hold the bag to the cover as they are some special kind to stop people messing with them i'd have thought, with it being an explosive an all.

So i was cutting the cover off with a sharp knife and being carefull when my mate walked in and stood on the planks over the pit, i have a few loose ones and the noise made me jump, oops.gif thought i'd set the bag off.





The bag is massive, might set it off at the weekend. blink.gif
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GialloEvo94
post 15th April 2010 23:52
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Glad you got it sorted thumbsup.gif

I've always wondered how the bag manages to get out from under a thick plastic cover so quickly and fully inflate itself in 1/25 of a second without flipping the cover into your face blink.gif I guess it somehow flips the cover downwards and out of the way rather than push it forwards but I have no idea how it does all that so quickly unsure.gif It would be good to watch it in slow-motion action to see exactly what happens to the cover. Same question goes for the one in the steering wheel too.

I'm not sure how many volts are needed to set off a TRW airbag but I've read articles saying that static electricity can sometimes set them off so be careful and don't go walking across any sh*g pile carpets with it in your hand!! biggrin.gif


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930Tech
post 16th April 2010 00:07
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This is us setting of an alfa steering wheel bag.



I'll film the passenger on at the weekend but won't be able to do slo mo.
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NaanBread
post 8th May 2010 19:47
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this has totally confused me, because I sold you my airbag bits...but the meet wasnt until the end of april?!


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NaanBread
post 8th May 2010 20:14
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this reminds me!! I have a 7" picture viewer slideshow thing that has freeview built in! how awesome is that! I may adapt it and put it in the car somewher hmmmmmmmmmm now you have got me thinking about another project!

another great thing, it was 25 from asda a couple of months ago! thumbup.gif grab a bargin while you can!


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buellboy
post 8th May 2010 20:43
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i have like 10 mini laptops that i bought as a job lot originally NTL...they have touchscreens and running windows XP with 32GB and 256MB on a decentish processor.

One day I will fit them to my car and have a touchscreen console smile.gif


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Hybrd
post 8th May 2010 21:23
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From what i've seen of air bags that have gone off in crashed cars they just lierally rip through the cover, maybe there engineered with weak points in.


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NaanBread
post 8th May 2010 21:31
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Have none of you ever had an airbag go off in your face? basically they is weaker lines in the plastic over the airbag...if you look at your steering wheel in the right light/angle you will see these lines. I believe the 145 has a square opening that splits in the middle so opens like a double door smile.gif


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