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parasitic drain

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Old 11-08-2016, 03:38 AM
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Does anybody have and tips for finding a parasitic drain of the battery in our cars, with all the lights ( if I have my multimeter attached to the battery, the boot lights will be on, for example ).

Is there anywhere I should look first?

Lastly, where can I get a list of fuses and their locations so I know what I'm pulling?
 
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Old 11-08-2016, 04:24 AM
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Leave the boot open until the lights go out or just remove them.
Check the flap in the ignition barrel is closing when the key is removed.
Make sure all auto functions are switched off.
The first place I would look would be the alarm chirp sounder, under the right wheel arch liner.

Your car should be showing a quiescent draw of 30milliamps after 45 minutes.
 
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Old 11-08-2016, 04:44 AM
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Originally Posted by mrobinson
Does anybody have and tips for finding a parasitic drain of the battery ......
See this thread:

https://www.jaguarforums.com/forum/g...0/#post1565541

Originally Posted by mrobinson
..... Lastly, where can I get a list of fuses and their locations so I know what I'm pulling?
The fuse and relay lists are in the Vehicle Care Manual. You can downoload it from here:

https://www.jaguarforums.com/forum/x...006-faq-67827/

Graham
 
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Old 11-08-2016, 09:25 AM
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Just a thought, but how new is your battery? I thought I had a parasitic drain because my battery was fine for a day or two but would be dead soon after. After testing I determined that wasn't my issue... the battery was just on its way out. I just kept the battery on a tender when I wasn't driving it a lot and it was fine... I just bought a new battery and everything is good.
 
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Old 11-08-2016, 09:31 AM
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It's only a few weeks old.

I took it to the garage because it kept going flat. The old battery was getting toward the end of it's life but still passing the tests - they recommended just changing it rather than paying for an autoelectrician to diagnose ( and potentially find nothing ). Apparently they can be failing without indicating on the test that they're on their way out.

One the plus side, this battery took quite a while to go flat - the old one was going dead in days.
 

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