SRS light driving me mad!

Tudorblah · Post by **Tudorblah** » Sun Oct 25, 2020 6:56 pm

Good evening, I’m new to the forum and looking for some help. I have a 2000 MGF VVC which in general is behaving pretty well. 2 days before the MOT was due the SRS light came in and stayed on. I read the forums and did all the waggling under the seat stuff and even bought the ebay airbag light cheat devices to hopefully find which area was at fault. They didn’t help. So I made the decision it had to be the SRS ECU or the rotary coupler. I bought a used ECU and plugged it in, light went off - success! Didn’t drive the car anywhere, next day started it up and the light came back on. I have waggled again but to no avail. Is it likely to be the rotary coupler or something more sinister that is damaging the ECU? Any help or advise would be hugely appreciated. The car is now out of MOT so stuck in the garage now.

phillh · Post by **phillh** » Sun Oct 25, 2020 11:14 pm

I'm not sure what you waggled but I had similar problem.
try this:-

https://www.mgfregister.org/forum/viewt ... ht#p192725

NigelOBB · Post by **NigelOBB** » Mon Oct 26, 2020 12:09 pm

Does sound. Like the connectors under either the passenger or drivers seat. The connectors in the plug dry out. Pop them apart and put done Vaseline on the pins. The seat belt tensioners can also cause the SRS light

Both my 75 and TF do the same thing, usually in the way to the test station lol

Sent from my iPhone using Tapatalk

talkingcars · Post by **talkingcars** » Mon Oct 26, 2020 8:59 pm

Hi and welcome to the forum.

As with most systems in the modern car the only accurate way to diagnose the cause of the light is to scan the ECU with a reader such as a T4 0r a www.pscan.uk

James

Tudorblah · Post by **Tudorblah** » Wed Oct 28, 2020 9:54 pm

Many thanks for the advice, I will try the contact cleaner truck and see what happens.

Barbour · Post by **Barbour** » Fri Oct 30, 2020 1:19 pm

NigelOBB wrote: ↑
Mon Oct 26, 2020 12:09 pm

Both my 75 and TF do the same thing, usually in the way to the test station lol

Naughty little buggers they are...

paul_mgb · Post by **paul_mgb** » Sun Nov 01, 2020 3:24 pm

I've had that a couple of times with my TF. Don't forget to leave the battery disconnected for half an hour before messing with the SRS. I usually squirt WD 40 and wiggle the wires in the connectors under the seats. Does the trick. I've got a friend with a Chinese TF and he had the same.

Tudorblah · Post by **Tudorblah** » Tue Nov 03, 2020 2:51 am

You were all quite right of course! It was the connection under the passenger seat. I ended up soldering them together and doing away with the connector altogether. All sorted. Cheers for the advice.

AntonyM · Post by **AntonyM** » Wed Nov 04, 2020 10:05 am

I had the SRS issue a while ago (05TF) ....cleaning the connectors with contact cleaner and then using a small cable tie around them to stop them working loose again solved it for me.

talkingcars · Post by **talkingcars** » Wed Nov 04, 2020 10:26 pm

paul_mgb wrote: ↑
Sun Nov 01, 2020 3:24 pm
.....Don't forget to leave the battery disconnected for half an hour before messing with the SRS.....

MGR say 10 minutes.

Tudorblah wrote: ↑
Tue Nov 03, 2020 2:51 am
You were all quite right of course! It was the connection under the passenger seat. I ended up soldering them together and doing away with the connector altogether. All sorted. Cheers for the advice.

Pleased you have cleared the light, hopefully you won't need to get the seat out again.

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