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Power drain

Another mystery power drain, I've had a search and I have a couple of ideas now, mainly rear demister (doesnt work on mine) seem to have caused a couple of issues.

 

Basically, I came to my car last friday to try and use it, it had been stood for 6 days and it wouldnt start due to flat battery. It tried, turned over once and then the solenoid clicked. There was no one else at my parents, I couldnt be bothered so simply went back to my house in my van. I thought it a bit odd as the car had stood for 5 or 6 weeks before this, and then started on the first turn of the key no battery issues etc.

 

Now, I've been back to my parents tonight to jump start it but I got in the car, turned the ignition key and nothing, nada, no dash lights or anything. So busted out the meter and a mere 0.86 volts in the battery! lol No wonder it wasnt going to start.

 

So it was getting late, pulled the battery out and popped it on charge, it took a healthy 13.6v from the charger at 4 amps so thats all OK, the battery is only 6 months old anyway.

 

So there must be a fault on the car, dad and I did a quick check found fairly high resistance through the terminals on the meter, 75ohms or so. To be honest, electricity is not my strong point I dont really know if thats bad good awful or what. Dad didnt seem impressed by it though, and when I pressed a button and it dropped to 37 he was even less impressed.

 

Is there any obvious usual suspects I should be looking for? I'm going to attack it tomorrow in the daylight with the meter and start pulling fuses until something happens. Has anyone any pointers?

Featured Replies

This sounds really odd...I am no expert, but one thing I would check (speaking from experience!) is the light inside the boot. Roll up the boot cover so you can see inside and make sure the light goes off when you close the doors and tailgate. If you have already checked this then something else must me continually powered up or leaking to earth. In car entertainment can sometimes be the cause if it's been wired up incorectly especially if there is a power amp hidden somewhere. Hope you find the cause, all the best.

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