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Old 10-15-2012, 03:02 PM   #1
dtravis
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focus titanium parasytic drain

I have a focus titanium 2.0l tdci 2005. Every morning when go to start car the battery is flat. It had been to two garages but neither can find the problem. It has had a new battery , new alternator but still isn't fixed. All I have noticed is that the green mileage light never goes out. Every morning it is still on. Don't know if this is anything to do with it, but do know I feel like pulling my hair out. Any ideas would be greatly appreciated.


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Old 10-15-2012, 05:46 PM   #2
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ok something is deffinetly draining the battery can you pull the fuse for the mileage light see if that changes the battery going dead
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Old 10-15-2012, 06:09 PM   #3
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Replace the "Power Hold Relay".
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Old 10-15-2012, 06:36 PM   #4
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Yeah something is allowing all systems to remain powered all night.
Some computer add on gizmo caused that if it was installed also.
So I can see if the car never turns off the aux at all...
What he said. the relay.
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Old 10-16-2012, 01:50 PM   #5
Eiron
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I recently went thru something very similar on my daughter's '02 SE wagon. The symptoms were slightly different (she doesn't have a green mileage indicator on this car), but the effects were the same: a brand new battery going flat overnight. A voltmeter reading in the evening showed 12.8-13.0 volts & the next morning it would be 11.6-11.8 volts.

The problem turned out to be a faulty brand new alternator. I had to take the car to a specialty automotive electrical shop (servicing RV/campers & work trucks) in order to track down the issue. They identified the alternator as allowing voltage in the reverse direction (battery to alternator) when the car was off. They measured 4 to 6 amps of draw, & pointed out that the alternator would even 'hum' sometimes when the car was off!

Before having it tested I was disconnecting the negative battery cable at night & reconnecting it in the morning to keep the battery fresh. This was a bit of a hassle, so I installed a battery 'quick disconnect' so that she could disconnect/reconnect with a few quick turns of a knob.

After having it tested I took the independent test report to the parts store & got a free replacement alternator. The first new/remanufactured alternator cost USD $140 & came with a 1 yr warranty. The electrical testing cost another USD $85, but it was worth it to know exactly the source of our problem & to avoid any hassles from the parts store.

After replacing the alternator again (), a voltmeter test showed a solid 12.8 volts after parking overnight.
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Old 10-16-2012, 02:10 PM   #6
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In any regard the one for sure thing is that the battery is leaking voltage somehere, take iminhell's advice then if that doesnt work check the connections particularly those from the hot side of the battery.xD
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