Todays Puzzle

[mlkey]

Well, you were saying it was quiet..

 

Have an intermittent issue with a message (Passenger Airbag deactivated) coming up on my 2002 C5 2L HDI.

 

It only does it on really cold mornings, in the summer it was rare, and now we are in winter, it does it most mornings. I noticed, that by starting the car and running it for a minute, and then restarting, the fault would be gone. On a really cold day, this does not work.

 

Done so far:

 

The car had been getting a little slow cranking on the cold mornings, and coupled with the fact I was getting this message, and having read about the spurious messages that can appear if the battery is not too good, I purchased a new one. The cranking is greatly improved, but the airbag issue is exactly the same.

 

I then tried the connector under the passenger seat, on the offchance, but still have the same issue.

 

If I use the car on a cold morning, the fault generally does not reoccur that day, unles it is exceptionally cold.

 

Any other connectors worth checking, or earth points?

 

Thanks.

[techbod]

most batteries seem to look as they cant be filled up because of a silly sticker over the caps and makes you think its a none type normal battery and looks like the new filled for life jobs when its not, check for the obvious and top it up ( low fluid level effects the cranking amps ) and that give lots of false ECU readings, air bag passenger side tend to suffer the lock barrel issue due to lack of use so some wd40 in there might help

[Randombloke]

air bag passenger side tend to suffer the lock barrel issue due to lack of use so some wd40 in there might help

 

Ah, I see, so the problem occurs because unless you use a rear facing child seat you will never turn the lock barrel and it corrodes?

[mlkey]

most batteries seem to look as they cant be filled up because of a silly sticker over the caps and makes you think its a none type normal battery and looks like the new filled for life jobs when its not, check for the obvious and top it up ( low fluid level effects the cranking amps ) and that give lots of false ECU readings, air bag passenger side tend to suffer the lock barrel issue due to lack of use so some wd40 in there might help

 

I have already put a new battery on, but will look at the key switch. I did turn it off and on a few times to see if it help. Incidentally, even with the passenger airbag turned off at the keyswitch the following morning, it still flagged the fault.

[techbod]

mine did the same and found it to be the driver seat connection, when I let the seat go all the way back it set the airbag light on