Strange Electrical fault

Hendy · Mar 27th, 2024, 17:37

Hi guys

I hope someone can help

I have a P3 d5.

I was traveling along and lost all power well I mean can just cut out and got all the warning lights on at once. I had to free wheel it to a safe stop.

Showing faults now in immobiliser, air bag, breaks, steering basically everything.

I tried booster pack and didn't do anything just starts with immobiliser fault and then second later airbag, breaks etc again

I have it booked with a local mechanic next week but I seen on YouTube someone had a fault like this and was a ECM or something..

I tried to search on here for ecm tho not enough characters and then scrolled through about 15 days to see if it came up before.

Anyways any advise or help would be greatly appreciated. Was heart breaking seeing it getting it recovered.

ele288 · Mar 27th, 2024, 19:20

Cem could be a suspect. Under glove box. Some cars had leak from windscreen and some from windscreen washer hose that is on top of cem. Check for any leaks on passenger side

Hendy · Mar 27th, 2024, 21:58

Will check again

Had a look yesterday at it seemed dry tho didn't really look to closely

XC70Virgin · Mar 27th, 2024, 22:29

Sounds like an alternator fault. They're the symptoms.

Hendy · Mar 28th, 2024, 06:41

Quote:

Originally Posted by XC70Virgin

Sounds like an alternator fault. They're the symptoms.

The alternator I think might of been on its way out. I seen a flicker on full beams there couple of months back and was thinking it's days were numbered.

I'll maybe get a new one. Any recommendations on which to get?

Found this aswell looks same fault
https://youtu.be/rVJEfD4evzI?si=jFw4YJIj5Hwgk9Z2

Hendy · Mar 28th, 2024, 18:50

So I've ordered a alternator this afternoon be here in the morning I'll fit it over the weekend.

Hopefully it's as simple as that lol

Hendy · Apr 1st, 2024, 16:55

Ok alternator didn't change anything..but thinking as am writing this now.

Id likely need to plug my car into the vida dice to clear all the lights now after the replacement.. even tho I had the battery disconnected etc

That right?

Simmy · Apr 1st, 2024, 17:54

its a myth that disconnecting the battery will clear faults check battery condition cem and all earth points check for any blown fuses especially the one for the ecm. scan with vida to help locate any faults. it definitely sounds like a total electrical failure.

Hendy · Apr 1st, 2024, 19:55

I see what I can find l.

Not used the vids or laptop since 2019 😂 let's hope I remember

Mar 27th, 2024, 17:37	#1
Hendy Junior Member Last Online: Apr 15th, 2024 21:34 Join Date: Nov 2019 Location: Londonderry	Strange Electrical fault Hi guys I hope someone can help I have a P3 d5. I was traveling along and lost all power well I mean can just cut out and got all the warning lights on at once. I had to free wheel it to a safe stop. Showing faults now in immobiliser, air bag, breaks, steering basically everything. I tried booster pack and didn't do anything just starts with immobiliser fault and then second later airbag, breaks etc again I have it booked with a local mechanic next week but I seen on YouTube someone had a fault like this and was a ECM or something.. I tried to search on here for ecm tho not enough characters and then scrolled through about 15 days to see if it came up before. Anyways any advise or help would be greatly appreciated. Was heart breaking seeing it getting it recovered. __________________ 2011 V70 D5 currently on 230k Last edited by Hendy; Mar 27th, 2024 at 18:53. Reason: Correcting

Mar 27th, 2024, 21:58	#3
Hendy Junior Member Last Online: Apr 15th, 2024 21:34 Join Date: Nov 2019 Location: Londonderry	Will check again Had a look yesterday at it seemed dry tho didn't really look to closely __________________ 2011 V70 D5 currently on 230k Last edited by Hendy; Mar 27th, 2024 at 22:09.

Mar 27th, 2024, 22:29	#4
XC70Virgin Member Last Online: Apr 18th, 2024 22:32 Join Date: Apr 2018 Location: Newry	Sounds like an alternator fault. They're the symptoms. __________________ Feb 2010 XC70 SE Lux in White. T6.

Mar 28th, 2024, 18:50	#6
Hendy Junior Member Last Online: Apr 15th, 2024 21:34 Join Date: Nov 2019 Location: Londonderry	So I've ordered a alternator this afternoon be here in the morning I'll fit it over the weekend. Hopefully it's as simple as that lol __________________ 2011 V70 D5 currently on 230k

Apr 1st, 2024, 16:55	#7
Hendy Junior Member Last Online: Apr 15th, 2024 21:34 Join Date: Nov 2019 Location: Londonderry	Ok alternator didn't change anything..but thinking as am writing this now. Id likely need to plug my car into the vida dice to clear all the lights now after the replacement.. even tho I had the battery disconnected etc That right? __________________ 2011 V70 D5 currently on 230k

Mar 27th, 2024, 19:20	#2
ele288 Member Last Online: Yesterday 19:17 Join Date: Jun 2019 Location: Havant	Cem could be a suspect. Under glove box. Some cars had leak from windscreen and some from windscreen washer hose that is on top of cem. Check for any leaks on passenger side

Apr 1st, 2024, 17:54	#8
Simmy Premier Member Last Online: Yesterday 22:23 Join Date: Mar 2017 Location: Manchester	its a myth that disconnecting the battery will clear faults check battery condition cem and all earth points check for any blown fuses especially the one for the ecm. scan with vida to help locate any faults. it definitely sounds like a total electrical failure.

Apr 1st, 2024, 19:55	#9
Hendy Junior Member Last Online: Apr 15th, 2024 21:34 Join Date: Nov 2019 Location: Londonderry	I see what I can find l. Not used the vids or laptop since 2019 😂 let's hope I remember __________________ 2011 V70 D5 currently on 230k

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