2013 battery light won’t go out?!! FIXED

2013 battery light won’t go out?!! FIXED

Postby Buck88 on Wed, 19 Jun 2019 12:24 +0000

Hi im new on here.. I’m hoping someone may be able to help me with a problem I have!
I have a 2013 2.5d4d with a battery light on its had a new battery and alternator which is charging ok but still the light is on..
There’s 4 wires on the plug on the alternator I’m not sure what they all do?
When it’s unplugged the light goes out. I did find a broken wire near the plug when I fitted the alternator which has been repaired but still light on?

Any help would be much appreciated thanks!
Last edited by Buck88 on Wed, 19 Jun 2019 7:49 +0000, edited 1 time in total.
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Re: 2013 battery light won’t go out?!!

Postby martynvella on Wed, 19 Jun 2019 3:51 +0000

Have the new alternator tested. The warning light control part of the reg can fail while it still charges.
What sort of alternator did you put in? The OEX one with a "U"at the end has to be configured properly before fitting.
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Re: 2013 battery light won’t go out?!!

Postby Buck88 on Wed, 19 Jun 2019 5:01 +0000

I’ve tried 2 different aftermarket ones on it as I thought maybe it was a fault with the new alternator..
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Re: 2013 battery light won’t go out?!!

Postby Ozwaz on Wed, 19 Jun 2019 5:39 +0000

Have a new plug professionally put on. Sometimes can bus can sense shit solder jobs, then it will whinge about Ohms variation.
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Re: 2013 battery light won’t go out?!!

Postby Buck88 on Wed, 19 Jun 2019 7:02 +0000

Just found a another broken wire half way down the loom repaired and light went straight out! Thanks for the help
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Re: 2013 battery light won’t go out?!! FIXED

Postby martynvella on Thu, 20 Jun 2019 3:19 +0000

Well done. FYI the alternator is not can bus in that model. If the ecm has any input it will just be an analogue switch to reduce the voltage output at times. It has its own temp compensating circuit.
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Re: 2013 battery light won’t go out?!!

Postby Chancha_Blanca on Fri, 21 Jun 2019 2:21 +0000

Buck88 wrote:Just found a another broken wire half way down the loom repaired and light went straight out! Thanks for the help


Where abouts was the break?
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Re: 2013 battery light won’t go out?!! FIXED

Postby Buck88 on Sat, 22 Jun 2019 5:51 +0000

I’d say the break was about 10 inches into the loom from the alternator
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