SRS warning light - MG-Rover.org Forums
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post #1 of 29 (permalink) Old 09-10-2016, 12:48 Thread Starter
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SRS warning light

I broke down on A1 northbound (timing belt snapped)car a write off. luckily was able to buy a second user MG ZS+ TD 2002 saloon, been driving ok for about 2 weeks and noticed that the SRS warning light was on. having no owners or Haynes manual for this car

Can someone tell me what this warning me about?
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post #2 of 29 (permalink) Old 09-10-2016, 17:37
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check the connects under the front seats , is the usual problem , may have to take them apart give them a clean out , most people just replace them with push fit connectors .
unless the brake pedal is juddering when u brake hard or at low speeds in which case it is a sensors or reluctor ring gone.
and as gnu says disconnect the battery and leave for 20 or 30 minutes before fiddling as airbags tend not to like shorts .

Last edited by Andy400; 09-10-2016 at 17:51.
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post #3 of 29 (permalink) Old 09-10-2016, 17:48
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Yeah, as Andy says, most likely connections under seats. Strictly speaking you should disconnect the battery before fiddling with them as a short could set off the air bags.

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post #4 of 29 (permalink) Old 10-10-2016, 14:10 Thread Starter
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thanks for the info both of you, but i am reluctant to disconnect the battery as i don't know if this will need me to enter any codes or whatever as i don't know any
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post #5 of 29 (permalink) Old 10-10-2016, 18:10
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Go careful then Bodger2...

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post #6 of 29 (permalink) Old 10-10-2016, 18:22
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if you have the standard radio it will require a code , if you know the model i can help with that if it the standard cd player one .so dont need to worry about it , just need to take it out for the number engraved on the side.
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post #7 of 29 (permalink) Old 10-10-2016, 20:19
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The SRS light indicates a problem with the safety restraint system which covers the steering wheel, passenger airbag, the seat side airbags and the pre-tensioners in the seatbelt reels at the bottom of the B pillars.

The common faults are the connectors under the seats and the rotary coupler behind the steering wheel.

When the light is on the SRS is disabled and is also a MOT fail.


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Originally Posted by Andy400 View Post
check the connects under the front seats , is the usual problem , may have to take them apart give them a clean out ,
Spray them with electrical contact cleaner (available from places such as Maplin and RS components). Unplug and replug a couple of times helps.

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Originally Posted by Andy400 View Post
most people just replace them with push fit connectors .
Speak for yourself Andy, thankfully most people clean them.


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unless the brake pedal is juddering when u brake hard or at low speeds in which case it is a sensors or reluctor ring gone.
um, this is nothing to do with SRS, it's the ABS system.

Quote:
Originally Posted by Andy400 View Post
and as gnu says disconnect the battery and leave for 20 or 30 minutes before fiddling as airbags tend not to like shorts .
The official line from MG Rover was to disconnect the battery for TEN minutes.
Personally I ensure that the ignition has been off for several hours.
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post #8 of 29 (permalink) Old 10-10-2016, 21:42
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yeah was covering both bases , in case it was a mis-read or typo , while he was thinking of something else , how many times have ppl come on and typed srs and meant abs lol
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post #9 of 29 (permalink) Old 15-10-2016, 15:56 Thread Starter
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thanks lads/lasses for the info and advise. it was the contacts under the drivers seats and they had already been changed to bullet connectors, separated and cleaned, working ok now with no light
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post #10 of 29 (permalink) Old 07-01-2017, 13:14 Thread Starter
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Unfortunately the SRS light has come on again and no matter how i fiddle with the wires under the drivers seat (even going as far as removing the seat to get at the wires easier), i cannot get the light to stay off. bullet conectors fitted

1, is there any way of shorting out the wires and disconecting the side airbag to prove if it is this one?
2, what else can it be?
3, if i can find a garage with a diagnostic unit that works with my ZS+ 2.0TD 2002, can it point to the failed item?
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post #11 of 29 (permalink) Old 07-01-2017, 14:18
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TRY the same thing under front passenger seat as can be same problem bad connection
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post #12 of 29 (permalink) Old 07-01-2017, 17:13
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1. Very risky, could set off an airbag
2. Lots, on ours started with underseat connectors. Episode 2 turned out to be a faulty side impact sensor. Despite various auto electricians and their "find all faults" diagnostics all they came up with was possible short circuit. 10 minutes on an authentic Rover T4 correctly diagnosed, so for -
3. Check through Xpart website for an Xpart specialist centre (with a T4 diagnostic machine ) convenient to you and save hours of fiddling about..
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post #13 of 29 (permalink) Old 07-01-2017, 17:46
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yeah have read few in other forums where side impact sensors go faulty , and they also become wet or damp causing faults ( at the lower side next to the drivers seat ,b pillar),

Last edited by Andy400; 07-01-2017 at 18:49.
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post #14 of 29 (permalink) Old 07-01-2017, 21:53
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A pscan.eu will read the SRS ECU.
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post #15 of 29 (permalink) Old 17-01-2017, 08:41
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haha loool i just disconnected each one soaked either end in wd40 srs light been off since man if those air bags went off i would have had brown my pants!!!
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post #16 of 29 (permalink) Old 17-01-2017, 09:35
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Quote:
Originally Posted by Bodger2 View Post
Unfortunately the SRS light has come on again and no matter how i fiddle with the wires under the drivers seat (even going as far as removing the seat to get at the wires easier), i cannot get the light to stay off. bullet conectors fitted
Bullet connectors might be the issue - they are well known for causing contact issues, and most auto electricians will avoid using them - spade connectors form a more reliable contact.

If your ZS has its original Kenwood radio/cassette head unit which was fitted to the lower trim level MGs, you can safely disconnect the battery as these basic units do not have a security code. If it has been fitted with a different head unit, there may be a code, but there are plenty of specialists out there who can provide a code for any given head unit (often from simply being provided with the serial number from the casing).

I would suggest using electrical contact cleaner spray rather than taking the advice to use WD40 - WD40 is a mixture of paraffin and oil, and is more likely to give rise to contact problems in the future due to dirt and grime sticking to it. Proper contact cleaner will leave the contacts dry and dirt free, which is what is required.
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post #17 of 29 (permalink) Old 17-01-2017, 09:47
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Quote:
Originally Posted by deebee View Post
1. Very risky, could set off an airbag
2. Lots, on ours started with underseat connectors. Episode 2 turned out to be a faulty side impact sensor. Despite various auto electricians and their "find all faults" diagnostics all they came up with was possible short circuit. 10 minutes on an authentic Rover T4 correctly diagnosed, so for -
3. Check through Xpart website for an Xpart specialist centre (with a T4 diagnostic machine ) convenient to you and save hours of fiddling about..
Not risky at all,although the rubbish you read on internet forums would have you believe different.

When you turn off the ignition power to airbags is turned off.The most common copy and paste you see on forums is you have to disconnect battery and wait for 30 mins,wait for what lol.No need to do either but we love to be drama queens.

An airbag can be replaced with a 1.5 - 2.0 ohmn resistor but there is few times where that is nessercary. Most of the time with Airbag faults it comes down to bad connection.A good diagnostic machine will often point to where the issue is or it will if the person operating it knows what they are doing.
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post #18 of 29 (permalink) Old 17-01-2017, 10:23
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Quote:
Originally Posted by Man in the Car View Post
Bullet connectors might be the issue - they are well known for causing contact issues, and most auto electricians will avoid using them - spade connectors form a more reliable contact.

If your ZS has its original Kenwood radio/cassette head unit which was fitted to the lower trim level MGs, you can safely disconnect the battery as these basic units do not have a security code. If it has been fitted with a different head unit, there may be a code, but there are plenty of specialists out there who can provide a code for any given head unit (often from simply being provided with the serial number from the casing).

I would suggest using electrical contact cleaner spray rather than taking the advice to use WD40 - WD40 is a mixture of paraffin and oil, and is more likely to give rise to contact problems in the future due to dirt and grime sticking to it. Proper contact cleaner will leave the contacts dry and dirt free, which is what is required.
We always use electrical ecu contact oil as its designed to work on gold plated terminals great stuff
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post #19 of 29 (permalink) Old 17-01-2017, 10:25
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If you have ever seen and heard a airbag go off you'll definitely want to disconnect the battery
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post #20 of 29 (permalink) Old 17-01-2017, 11:28
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Quote:
Originally Posted by JOHNDQ View Post
If you have ever seen and heard a airbag go off you'll definitely want to disconnect the battery
Did you not read my post?
Disconnecting the battery won't make a jot of difference.

Have I seen an airbag go off,no cos ignition is always off and I've never had an accident so why should I have seen one go off,TV aside.
Like I said,drama Queens that can't think the oi ugh obvious facts.
Even if you left ignition on disconnecting one would fire it,it needs triggering.something you would be very hard pushed to do.
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