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26-11-2018
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Full Flexer
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Join Date: Nov 2017
Location: Somerset, QLD
Posts: 590 What Jeep do I drive?: WJ
Likes: 126
Liked 74 Times in 68 Posts
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Something is draining my battery
Hi all,
I am facing the issue that some components in my Jeep is draining the battery. In the beginning I thought it would be the dual battery installation, where the relay just went bad.
However I disconnected the second battery in the back and still, within 3 days my battery is empty. I just wondering what this could be. My radio is off and I cant think of anything else which could drain it so quickly.
At the moment I have to disconnect the battery if I leave the car longer than 1 day in the garage without turning on the engine.
Any idea how I can isolate the issue?
Thanks
Joerg
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26-11-2018
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Full Flexer
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Join Date: Jan 2009
Posts: 1,120 What Jeep do I drive?: XJ
Likes: 41
Liked 184 Times in 117 Posts
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Could it be some lamp that is meant to close when something else is shut?
e.g. glove box lamp, cubby box lamp, bonnet lamp, UHF radio is on etc.
Maybe your alternator is becoming faulty?
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26-11-2018
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AJOR Gold
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Join Date: Jun 2018
Location: Canberra
Posts: 170 What Jeep do I drive?: JK
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Liked 37 Times in 31 Posts
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Did this just start after putting in the dual battery or was it all good for a while first?
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It woulda been cheaper to set a year's salary on fire in the driveway & just left seat with friends
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26-11-2018
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Full Flexer
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Join Date: Nov 2017
Location: Somerset, QLD
Posts: 590 What Jeep do I drive?: WJ
Likes: 126
Liked 74 Times in 68 Posts
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Quote:
Originally Posted by relwell
Did this just start after putting in the dual battery or was it all good for a while first?
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It was already from the beginning. I got this car with the dual battery installation around a year ago. As mentioned I thought it would be the second battery which supposed to get charged when I run the engine, but gets disconnected from the front battery if the engine is off.
I kept the front battery disconnected, which then switched on my Amp and sub woofer, which I thought this would be the root cause. However, I disconnected the battery in the back now and still the front batter got drained.
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Instagram melbourne_wj
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26-11-2018
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Full Flexer
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Join Date: Nov 2017
Location: Somerset, QLD
Posts: 590 What Jeep do I drive?: WJ
Likes: 126
Liked 74 Times in 68 Posts
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Quote:
Originally Posted by eksjay
Could it be some lamp that is meant to close when something else is shut?
e.g. glove box lamp, cubby box lamp, bonnet lamp, UHF radio is on etc.
Maybe your alternator is becoming faulty?
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I checked all lights and all should be off. Also the radio definitely is not running. The Alternator got exchanged 6 months ago, and it was already faulty before. And as long as I drive the car on a regular base (like every day) all is good. So the alternator is charging the battery.
Bonnet light is disconnected for that reason, UHF radio is also switched off. I would need to check the glove box. I have a USB and iPod cable installed which is not really proper installed but just laid in. it might prevent the box to shut completely so that the light keeps burning.
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Instagram melbourne_wj
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26-11-2018
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Full Flexer
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Join Date: Jan 2009
Posts: 1,120 What Jeep do I drive?: XJ
Likes: 41
Liked 184 Times in 117 Posts
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Quote:
Originally Posted by JoergM
I checked all lights and all should be off. Also the radio definitely is not running. The Alternator got exchanged 6 months ago, and it was already faulty before. And as long as I drive the car on a regular base (like every day) all is good. So the alternator is charging the battery.
Bonnet light is disconnected for that reason, UHF radio is also switched off. I would need to check the glove box. I have a USB and iPod cable installed which is not really proper installed but just laid in. it might prevent the box to shut completely so that the light keeps burning.
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My experience was on a brand new battery. The drain came from the glove box switch being kept open by an interfering object. I hope it is that easy. After being baffled for several days, I then started to check the car in darkness and found a very thin line of light coming from the side of my XJ glove box....
The only other similar experience I have had with battery drain is a dodgy alternator.
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26-11-2018
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Senior Newbie
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Join Date: Feb 2015
Posts: 70 What Jeep do I drive?: XJ
Likes: 1
Liked 31 Times in 17 Posts
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If you can still put the power windows up and with the ignition off, you have switched one notch too far on the ignition barrel
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