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VT Commodore

VT Holden

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Hi I am having a problem with my vt commodore. My battery keeps dying and a mate looked at it and he thinks something is draining the battery. He asked his auto electrician mate and he was told it could be the BCM. He put a test light on the fuses under the dash and with the car off it was showing 14volts on the fuses. Is this normal? He also put the test light on the battery and the alternator with the car off and it was showing the volts and then he took off one of the terminals off the battery and got a different reading. He said it should read the same. When you lock the doors with the button sometimes it wants to work and sometimes it doesn’t and then you have to manually lock it. When you start the car it sometimes doesn’t kick over straight away. My friend took the negative terminal off the battery so there was no power going to it last night and I started it this morning and it didn’t start straight away it took a bit to crank over and start. I also took the car to the battery traders place and they said the battery is fine that there is something staying on and draining it. Has anyone got any ideas at all? Would it be the BCM or maybe something else. It’s really starting to annoy me.
 

lout

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not likely to be bcm
with engine off, voltages should not be higher than around 12.8v, so dont know how he got 14
please tell he he did not remove battery cable with engine running
never ever do this in a car with complex electronics
as you risk spiking your computers
take it to a real auto elec
your mates dont really seem to know what they are doing
where is marsden
 

vc commodore

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Get you or your mate to test for current draw by following the attached youtube link...The way it was tested isn't the correct way

 

vc commodore

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not likely to be bcm
with engine off, voltages should not be higher than around 12.8v, so dont know how he got 14
please tell he he did not remove battery cable with engine running
never ever do this in a car with complex electronics
as you risk spiking your computers
take it to a real auto elec
your mates dont really seem to know what they are doing
where is marsden

Marsden is in QLD...

Just to help in future, if you click on the name Marsden, or what ever place they put, it comes up with a google maps location....
 

lout

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1692184464967.png
 

Lex

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Marsden is in QLD...

Just to help in future, if you click on the name Marsden, or what ever place they put, it comes up with a google maps location....
Here's what l got when doing what you said (typed ;)).
 

VT Holden

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not likely to be bcm
with engine off, voltages should not be higher than around 12.8v, so dont know how he got 14
please tell he he did not remove battery cable with engine running
never ever do this in a car with complex electronics
as you risk spiking your computers
take it to a real auto elec
your mates dont really seem to know what they are doing
where is marsden
The battery was around the 12 something with the engine off and the fuses under the steering wheel were reading 14volts with the car off but I am guessing I think you shouldnt be getting any volts with the fuses with the car off.
 

VT Holden

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Get you or your mate to test for current draw by following the attached youtube link...The way it was tested isn't the correct way

Thank you so much. I will ask my mate if he can try this. Thanks heaps.
 
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