Air bag warning light, do i need to disconnect the battery

johnnyb44 · 11th July 2021, 14:49

Hi. My air bag light is on, and just wanted some reassurance before messing around with the connectors under the seat's. Crucially do I need to disconnect the battery and leave for 30 minutes before i separate the under seat connectors to clean etc, or is fine to do if the iginition has just been left off for 30 minutes. All the very best for any advice,
Johnny

snowman · 11th July 2021, 16:02

i would disconnect the battery and wait just to be on the safe side you don't want it going off
regards paul

stevestrat · 11th July 2021, 16:18

Some say ignition off for 10 mins, other's say disconnect the battery 30 mins before. Always best going on the side of caution.

johnnyb44 · 11th July 2021, 18:25

Thanks for the replies. In the end i didn't disconnect the battery but left the ignition off before attempting. anything for ½ an hour . I've unplugged the connectors, cleaned and jiggled them around to no success unfortunately. I also took the air bag fuse out and left it out for an hour hoping it might reset everything but again to no joy. I didn't have any cable ties to wrap the under seat connectors as I've noticed the seat tensioner connectors seem very loose even when fully connected up. I'll try this tomorrow hopefully. My ex brother in law also connected his diagnostic reader to the car but we soon discovered it didn't cater for rovers. So failing all this i suppose its going to be a trip to Jules for a T4 to narrow down the issue. There is a small change though now in how the warning light comes on. Before i started messing around with it, it would come on and stay on. Now after a bit of tinkering, it comes on, goes off then comes on again. I don't know what this means, but I've obviously done something to affect it's behaviour.
Away thanks again for the replies, even though i foolishly ingnored them and will keep you updated for my progress (or not)
All the best,
Johnny

stevestrat · 11th July 2021, 20:07

Yeah, the seat belt pre tensioner wiring etc can cause the light just as much as the airbag. Best advice is whatever you do to the airbag wiring/connectors do the same with the seat belt pre tensioner wiring/connectors. I ended up eliminating the connectors altogether instead going for the solder/heat shrink option but added about 6" of wire to the tight wiring.

MissMoppet · 12th July 2021, 07:36

I know this advice comes up regularly - to wait 30 minutes etc - but has anyone actually ever set off the airbag? (I'd better confess that I've never bothered, but maybe I have a guardian angel).

ceedy · 12th July 2021, 08:30

i've just used ignition off and get wiggling straight away,
done this way for 16 years .

might change the plugs one day

C

11th July 2021, 14:49	#1
johnnyb44 I really should get out more....... Rover 75 Join Date: Sep 2013 Location: north wales Posts: 2,698 Thanks: 1,774 Thanked 902 Times in 507 Posts	Air bag warning light, do i need to disconnect the battery Hi. My air bag light is on, and just wanted some reassurance before messing around with the connectors under the seat's. Crucially do I need to disconnect the battery and leave for 30 minutes before i separate the under seat connectors to clean etc, or is fine to do if the iginition has just been left off for 30 minutes. All the very best for any advice, Johnny __________________ Replaced pcv filter, springs, plenum spy hole mod,Bonnet cable divider mod. Wax oiled.Air con recharged. Auto box oil changed , Jules plenum guard fitted .Smoked wind deflectors fitted.S/S Compensator.Club Grill Badge kindly donated by Andyg2011..

11th July 2021, 16:18	#3
stevestrat This is my second home ZT260 #243 (resting) Join Date: May 2010 Location: Prestonpans Posts: 22,459 Thanks: 650 Thanked 4,624 Times in 3,358 Posts	Some say ignition off for 10 mins, other's say disconnect the battery 30 mins before. Always best going on the side of caution. __________________ Steve T4 Location Map

11th July 2021, 18:25	#4
johnnyb44 I really should get out more....... Rover 75 Join Date: Sep 2013 Location: north wales Posts: 2,698 Thanks: 1,774 Thanked 902 Times in 507 Posts	Thanks for the replies. In the end i didn't disconnect the battery but left the ignition off before attempting. anything for ½ an hour . I've unplugged the connectors, cleaned and jiggled them around to no success unfortunately. I also took the air bag fuse out and left it out for an hour hoping it might reset everything but again to no joy. I didn't have any cable ties to wrap the under seat connectors as I've noticed the seat tensioner connectors seem very loose even when fully connected up. I'll try this tomorrow hopefully. My ex brother in law also connected his diagnostic reader to the car but we soon discovered it didn't cater for rovers. So failing all this i suppose its going to be a trip to Jules for a T4 to narrow down the issue. There is a small change though now in how the warning light comes on. Before i started messing around with it, it would come on and stay on. Now after a bit of tinkering, it comes on, goes off then comes on again. I don't know what this means, but I've obviously done something to affect it's behaviour. Away thanks again for the replies, even though i foolishly ingnored them and will keep you updated for my progress (or not) All the best, Johnny __________________ Replaced pcv filter, springs, plenum spy hole mod,Bonnet cable divider mod. Wax oiled.Air con recharged. Auto box oil changed , Jules plenum guard fitted .Smoked wind deflectors fitted.S/S Compensator.Club Grill Badge kindly donated by Andyg2011.. Last edited by johnnyb44; 11th July 2021 at 18:27.. Reason: Typo

11th July 2021, 20:07	#5
stevestrat This is my second home ZT260 #243 (resting) Join Date: May 2010 Location: Prestonpans Posts: 22,459 Thanks: 650 Thanked 4,624 Times in 3,358 Posts	Yeah, the seat belt pre tensioner wiring etc can cause the light just as much as the airbag. Best advice is whatever you do to the airbag wiring/connectors do the same with the seat belt pre tensioner wiring/connectors. I ended up eliminating the connectors altogether instead going for the solder/heat shrink option but added about 6" of wire to the tight wiring. __________________ Steve T4 Location Map

12th July 2021, 07:36	#6
MissMoppet Posted a thing or two R 75 Tourer diesel Conny 2002, V6 Conny saloon petrol 2003 Join Date: Mar 2013 Location: Taunton Posts: 1,125 Thanks: 212 Thanked 406 Times in 223 Posts	I know this advice comes up regularly - to wait 30 minutes etc - but has anyone actually ever set off the airbag? (I'd better confess that I've never bothered, but maybe I have a guardian angel). __________________ Rover 75 Tourer Conny 2002 remapped 160 auto, R75 V6 2.5L auto Connoisseur 2003

11th July 2021, 16:02	#2
snowman Avid contributor rover 75 tourer Join Date: Nov 2010 Location: birmingham Posts: 123 Thanks: 107 Thanked 33 Times in 25 Posts	i would disconnect the battery and wait just to be on the safe side you don't want it going off regards paul

12th July 2021, 08:30	#7
ceedy This is my second home All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set . Join Date: Nov 2006 Location: Nr Sherborne But in Somerset.. Posts: 6,075 Thanks: 916 Thanked 1,214 Times in 768 Posts	i've just used ignition off and get wiggling straight away, done this way for 16 years . might change the plugs one day C __________________ The Three Bloo's Wifey's Zr105, MY CDTI & 260 #50 and Number One sons 1.8T in Firefrost When I were a lad Zero to 142 in 10.25 secs at the Pod on my Blown Norton. 210 Kart Champ in 70's

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