So battery has lower but there’s no power at fuse box? If that’s the case you need to check connections on the power distribution that lives on top of battery to make sure everything is clean and tight. Also while at it check the earth connection from battery to body is good

 

Thank you mate for reply

I'm gonna have a good dig on it tomorrow I hope it is as simple as small lead loose or dirty connection somewhere

Just baffled me how it's come out of nowhere best car I've had for reliability apart from this

I'll let you know outcome tomorrow

Cheers

 

Check the battery earth where it connects to the body as well make sure it is clean and tight.

 

if it had of been e series then there was a battery cable recall,i wonder if they fixed this for f series? i assume they would have,altho was there a recall when these cars were built..

 

Hey guys

I've got a 318d f30 2013 with 125k on clock

Had no issues apart from last night

Was driving along busy road no warning my car loses all power.

Cuts out and I can't even put hazards on

Checked battery is correct volts at front but no amps going to fuse box.

Random as f##k it then once on back of recovery truck lights came on and had power again.
Had a 1hr 30 trip so lights had been on for that journey so now I don't have enough juice to start her up and I've got multiple malfunctions on dash I.e brakes rpa failed charge battery .....


Any one got ideas what it could be

Regards

Tom

So battery has lower but there’s no power at fuse box? If that’s the case you need to check connections on the power distribution that lives on top of battery to make sure everything is clean and tight. Also while at it check the earth connection from battery to body is good

So pulled battery out of boot to charge thr positive has a burn mark on it pic to follow

 

Been getting warm for a while by looks of it, also that knurled nut doesn’t look standard to me either.

 

No and it's stuck

The cable that goes in to red box on positive won't come free either

Any ideas

 

https://www.realoem.com/bmw/enUS/showparts?id=3D32-EUR-03-2013-F30-BMW-320d&diagId=61_2891

I would get a new BST cable if it was me number 1 in above link, the BST trigger that’s melted in I would cut one off a car in scrap yard and splice it in to yours. You wouldn’t specifically need f30 one as most Bmw have same plug. Just get enough length to cut away damaged bit on yours.

 

Finally got it off would this have caused it to completely die on electrics

Here's the cable fried

How much my local bmw non dealer specialist will charge to sort this out could do it but can not be arsed tbh

 

Yes it would cause it but you also need to establish what caused the problem, could just be poor connection at battery which caused heat but you want to make sure there’s not an underlying problem.
Absolutely no idea what they would charge, I would be replacing the battery aswell if it was mine.

 

Noted I've ordered new cables and 10mm spares 40 squid gonna try that before I go to specialist and hope for best

Took battery off she charging well

I'll keep post updated

 

Hello! Any updates? My car just did the same thing yesterday, driving, tried to accelerate after a speed bump and the car completely died, no lights, no hazards, no nothing, just died, car stuck in drive, can´t access battery yet, I´ll remove my back seat today to access, but is not doing anything, I had to tow the car to my house.

 

from the easiest ones is loose terminal on the battery to more complicated like rotten wire sunder the body if the battery is in the trunk, there was some technical bulletin issued about 3 series - common fault close to rear nearside wheel arch- they were fitting extra sleeve on the power wire.