Xantia - MOT failure, air bag light

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

Jaf
Posts: 459
Joined: 09 Dec 2010, 20:17
x 16

Re: Xantia - MOT failure, air bag light

Post by Jaf »

Don’t worry, got it off!
AFFDF163-AB1D-4E4D-8E76-97314C6C3B72.jpeg
Jaf
Posts: 459
Joined: 09 Dec 2010, 20:17
x 16

Re: Xantia - MOT failure, air bag light

Post by Jaf »

Annnnd got the secondhand one on! Light went off but it’ll take a few starts and drives before I’m certain it’s good.
User avatar
xantia_v6
Forum Admin Team
Posts: 7905
Joined: 09 Nov 2005, 23:03
x 512

Re: Xantia - MOT failure, air bag light

Post by xantia_v6 »

To avoid another failure, it would be a good idea to check that your steering is correctly centralised.

Assuming that the steering wheel is stright when driving in a straight line, count the umber of turns and part turns from straight ahead to full lock in either direction. They should match.
Jaf
Posts: 459
Joined: 09 Dec 2010, 20:17
x 16

Re: Xantia - MOT failure, air bag light

Post by Jaf »

Thanks. Years ago I used to do wheel alignment as part of my job, it feels good to me. When the new tyres come they will also check alignment, I’ll get them to have a look at the track rods ends to see if they’re equal too. I saw some really bad ones. Hope I didn’t mess up anyone’s airbag!!
User avatar
xantia_v6
Forum Admin Team
Posts: 7905
Joined: 09 Nov 2005, 23:03
x 512

Re: Xantia - MOT failure, air bag light

Post by xantia_v6 »

The important thing is that the steering wheel does not rotate too many degrees from straight ahead in either direction. The designers did not allow for much tolerance on the length of the clock spring, and they fail much faster if they are slightly over-wound in either direction.
Jaf
Posts: 459
Joined: 09 Dec 2010, 20:17
x 16

Re: Xantia - MOT failure, air bag light

Post by Jaf »

Been for retest, all good! Thanks everyone for the help.
User avatar
Stickyfinger
Donor 2016
Posts: 9890
Joined: 28 Mar 2013, 22:05
x 739

Re: Xantia - MOT failure, air bag light

Post by Stickyfinger »

Just for info

How do you check a replacement clock spring is centred ?
Hell Razor5543
Donor 2021
Posts: 11994
Joined: 01 Apr 2012, 09:47
x 1506

Re: Xantia - MOT failure, air bag light

Post by Hell Razor5543 »

I think that (before fitting) there are a couple of arrow head markers that line up when it is centralised. If you rotate it one turn in a direction I think that one arrowhead moves 90 degrees round in the direction it rotated.
User avatar
van ordinaire
Donor 2017
Posts: 2537
Joined: 23 Jun 2015, 14:45
x 240

Re: Xantia - MOT failure, air bag light

Post by van ordinaire »

I had a similar issue with the red Cherokee, which seems to have fixed itself (in itself a little worrying) but while I was trying to work out what caused it to come on - or possibly not go off - it got me thinking about what it actually means. If it's a check light to confirm the system's working, what does it coming on/not going off randomly tell me?
Jaf
Posts: 459
Joined: 09 Dec 2010, 20:17
x 16

Re: Xantia - MOT failure, air bag light

Post by Jaf »

Mine has 4 x 360% turns, you can feel the spring tension increasing at the extreme end of the turns each way. The secondhand one was at 1 turn, so I set it at 2 turns.