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Discussion Starter · #1 ·
Hi guys.. I've been swapping relays about trying to get my central locking to work & now I have an airbag light on.. :crying:crying

Anyone know how to reset it?? I have an obd scan tool but I assume that this is a little different

Thanks in advance

Ash
 

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That is very annoying. It's pre-OBDII era, like my car so it has to go on the Rolls Royce Mastercheck system. Obviously, all the main dealers have this facility, but pretty much all the well known specialists also have it, as far as I am aware.

Your choices are:

1. Mess around with the relays again to see if that puts it right; maybe try disconnecting the battery for a few minutes; or, just use the car in the hope it will go away - which it may well do.

2. Go to somewhere with the proper diagnostic system and pay them to diagnose it.

3. There is a way of re-wiring the diagnostics socket to OBDII which has been described on here, so you could try than and then try and diagnose it yourself.


Personally, I would go for number 2, I just think it's worth it for all the messing around, and it will identify any other faults too at the same time which you may not know about.

When is the MOT due? You probably know, air bag light is a fail and you can't just disconnect the bulb because they look for them to all come on with ignition and then extinguish, so if it doesn't come on at all they know it's not working, so that's a fail too! So it is a real pain of a light to come on.
 

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Discussion Starter · #4 ·
Thanks guys..

I'll have a play about over the weekend
 

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you must slow down
these cars ant on a can so don't reset so when you pull the wrong fuse look out
and the only way at the moment you will have to use Master Check for air bags
 

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That is very annoying. It's pre-OBDII era, like my car so it has to go on the Rolls Royce Mastercheck system. Obviously, all the main dealers have this facility, but pretty much all the well known specialists also have it, as far as I am aware.

Your choices are:

1. Mess around with the relays again to see if that puts it right; maybe try disconnecting the battery for a few minutes; or, just use the car in the hope it will go away - which it may well do.

2. Go to somewhere with the proper diagnostic system and pay them to diagnose it.

3. There is a way of re-wiring the diagnostics socket to OBDII which has been described on here, so you could try than and then try and diagnose it yourself.


Personally, I would go for number 2, I just think it's worth it for all the messing around, and it will identify any other faults too at the same time which you may not know about.

When is the MOT due? You probably know, air bag light is a fail and you can't just disconnect the bulb because they look for them to all come on with ignition and then extinguish, so if it doesn't come on at all they know it's not working, so that's a fail too! So it is a real pain of a light to come on.

Good points. Frankly, I am afraid to disconnect the battery because all the other elec gremlins that might creep out! Maybe I"ll try it. I did take the car to the dealer, for window seals and air-con - but before I realized the warning light had been "taped"! Wish I'd known then! I have tried to wire the air bag diagnostic plus according to tsd5069pt2 but I'm not doing something right cos the light just glares at me......
 

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If you have to remove the battery, simply add another in parallel to the old one with jumpers. The car will not notice and your memories will be saved.
 

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If you have to remove the battery, simply add another in parallel to the old one with jumpers. The car will not notice and your memories will be saved.
Good suggestion, however, I think the idea behind the original suggestion was to de-power (0V) the system to see if the air bag resets.
 
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