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Discussion Starter · #1 ·
In an effort to get rid of the annoying 'bong' while driving off road I had a quick fiddle under the seats to find the sensor wire for the occupancy detection. Anyway to cut a long story short I removed the wrong one which caused an SRS alarm which didn't clear when all was put back. Should you find yourself in this position (which I don't recommend) the solution is quite simple:

Turn the ignition on and wait until the SRS (Airbag/pretensioner) light goes off. Within a second turn ignition off. Repeat a further two times. Next time you turn on you'll be in diag mode. When you turn things on again if you get a 2 second pause followed by a 3 second on, 2 second off repeated then all is well and the alarm is cleared. If you get anything else go and see someone qualified. If you then repeat the on/off 3 times you'll go back into user mode without an alarm.

Anyway, going back to my original problem - that ****** bong whenever I don't have a seat belt. As far as I can see there are 3 ways to fix it:

1 - remove the thing that goes bong
2 - Stop the **** detectors detecting when you're sitting on a seat
3 - make the belt clips think something is always there

For option 1 I would be concerned that the alarm is alarming for other things that are pretty useful to know about but I'm not sure. Can anyone else comment?

For option 2 I fear that if the car didn't think there was anyone there it wouldn't deploy the airbag or pretensioner. Anyone know? I'm having a look at the wiring diagram and haven't quite got it all worked out.

For option 3 I assume it is a simple open/closed circuit. As a result shorting a wire should cause the car to think the belt is on. Although this is the most simple and least likely to affect a safety critical system it is also the one that is hardest to undo when coming to sell it as I assume they're push to make rather than push to break type sensors.

Thanks in advance,


18 Posts
Hi there, I'm new here.
Now then this annoying BONG your all on about. :cry:
As far as I can see , anyway, :? when you are OFF ROADING with no seat belt, to stop the bong simply PUT THE SEAT BELT in the holder first.
Then , wait for it.... :eek: .. sit in the seat, NO BONG....TARRRA!!!!
I hope this helps.
Can't be fussed with doing thing the long way round.

1,285 Posts
Richard, where did you get the wiring diagram from? As an electrical engineer I'm very frustrated seeing all the wires and not knowing what they are for. I X trail is the first car that I have own where I have no info - Haynes / workshop manuals / wiring diagrams. I have looked on my usual source (e bay) but they only have info for the T30.
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