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Old 8th July 2021, 09:53   #1
Dona
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Question Air bag light

Hallo,
I can't reset air bag light. There must be a problem with broken circuit in a bunch of cables located underneath the driver seat. My question is: Are these cables replaceable?
Many thanks for some advise.

Last edited by Dona; 8th July 2021 at 10:16..
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Old 8th July 2021, 11:26   #2
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Hi, common problem. One solution is to unplug the connectors a few times to clean the pins, or clean them with IPA or whatever. Do both front seats and see if that helps.
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Old 8th July 2021, 13:20   #3
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There are two connectors under both fronts seats, one for the airbag, the other for the seat belt pre-tensioner, a problem with either can cause the airbag light. In the pic below, the airbag is the thick yellow cable to the left, the seat belt pre-tensioner is the black cable (with two blue wires) in the middle.



As Ronnie suggested, first plan of attack is to separate the connectors, spray with an electrical cleaning fluid then reconnect/separate several times. See how it goes from there.
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Old 8th July 2021, 13:41   #4
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some people disconnect the battery first, i never have, just make sure the ignition is off or as been off for at least 10 minutes.

Twist the connector to remove it from the seat rail.
1

2

Then pinch or press the sides of the connector and pull it apart, or you could lift the seat and tip it back a little.
3

as above clean the pins with contact cleaner join and undo and few times hope fully that will solve the problem, if not then maybe fit new more secure connectors.

4
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Old 8th July 2021, 16:44   #5
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Wot they said......
Do you have electric seats and do you frequently adjust (in particular) the driver side?
The plugs in the images were not the same as the type used in earlier production vehicles (just in case your's look different) but both are subject to 'parting' ever so slightly, sufficient for the low current in the circuit to trigger an alarm (the light comes on). Give all the contacts (ie in the plug and the socket) a gentle clean and then a dab of electrical contact grease before reconnecting. If all is well and the light goes out, before re-fixing the plug back onto the seat chassis secure the two halves of the plug/socket together with a small cable tie so that in future they cannot be put into tension and attempt to pull apart.
If the plugs are in any way damaged you can purchase OE repair kits from Rimmers (bit expensive..) or replace with another type (as suggested) at a fraction of the cost. There is also a Rover Technical Bulletin with a very simple fix for re-routing/fastening the cable so it cannot get tensioned (that's what happens when the seats are frequently moved).
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Old 8th July 2021, 20:55   #6
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Ages ago, someone (Brian?) posted that the foam cushions in the seats starts to decay after some years, producing cyanide gas (not a lot ) which corrodes the connectors... bit of vaseline shoudl insulate them from further attack...
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Old 9th July 2021, 15:06   #7
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Default Air Bag Light

Quote:
Originally Posted by suzublu View Post
Hi, common problem. One solution is to unplug the connectors a few times to clean the pins, or clean them with IPA or whatever. Do both front seats and see if that helps.
Many thanks for the advise. I shall try it.
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Old 9th July 2021, 15:11   #8
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Smile Air Bag Light

Quote:
Originally Posted by Arctic View Post
some people disconnect the battery first, i never have, just make sure the ignition is off or as been off for at least 10 minutes.

Twist the connector to remove it from the seat rail.
1

2

Then pinch or press the sides of the connector and pull it apart, or you could lift the seat and tip it back a little.
3

as above clean the pins with contact cleaner join and undo and few times hope fully that will solve the problem, if not then maybe fit new more secure connectors.

4
Many thanks for the advise with pictures. Great job. I shall try it.
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Old 9th July 2021, 15:12   #9
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Default Air Bag Light

Quote:
Originally Posted by stevestrat View Post
There are two connectors under both fronts seats, one for the airbag, the other for the seat belt pre-tensioner, a problem with either can cause the airbag light. In the pic below, the airbag is the thick yellow cable to the left, the seat belt pre-tensioner is the black cable (with two blue wires) in the middle.



As Ronnie suggested, first plan of attack is to separate the connectors, spray with an electrical cleaning fluid then reconnect/separate several times. See how it goes from there.
Many thanks for your advise. I shall try it.
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Old 9th July 2021, 15:17   #10
Dona
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Default Air Bag Light

Quote:
Originally Posted by rab60bit View Post
Wot they said......
Do you have electric seats and do you frequently adjust (in particular) the driver side?
The plugs in the images were not the same as the type used in earlier production vehicles (just in case your's look different) but both are subject to 'parting' ever so slightly, sufficient for the low current in the circuit to trigger an alarm (the light comes on). Give all the contacts (ie in the plug and the socket) a gentle clean and then a dab of electrical contact grease before reconnecting. If all is well and the light goes out, before re-fixing the plug back onto the seat chassis secure the two halves of the plug/socket together with a small cable tie so that in future they cannot be put into tension and attempt to pull apart.
If the plugs are in any way damaged you can purchase OE repair kits from Rimmers (bit expensive..) or replace with another type (as suggested) at a fraction of the cost. There is also a Rover Technical Bulletin with a very simple fix for re-routing/fastening the cable so it cannot get tensioned (that's what happens when the seats are frequently moved).
I have manually adjusted seats. And very often I adjust the driver seat.
Many thanks for your detailed advise. I shall try it.
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