2007 Jeep Grand Cherokee Battery Killer - JeepForum.com

 
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post #1 of 3 Old 11-21-2015, 08:44 AM Thread Starter
Maxmurof
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2007 Jeep Grand Cherokee Battery Killer

I have a 07 grand cherokee that likes to intermittently kill its own battery. Its always happens over night. I have changed the battery, alternator ,starter and now the dealer changed the ignition under a recall . This morning its dead again.
I'll put the charger on it for a few hours and it will be good for a few weeks . It use to only happen about once a year but now its become more frequent.Not sure what else to do ,The jeep has been a solid runner since new with very few problems and my wife and I don't want to
get rid of it. I have no complaints with this car it has been very reliable other than this one issue. Any advice will be greatly appreciated.

Thanks,
Max

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post #2 of 3 Old 11-24-2015, 09:31 AM
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Quote:
Originally Posted by Maxmurof View Post
I have a 07 grand cherokee that likes to intermittently kill its own battery. Its always happens over night. I have changed the battery, alternator ,starter and now the dealer changed the ignition under a recall . This morning its dead again.
I'll put the charger on it for a few hours and it will be good for a few weeks . It use to only happen about once a year but now its become more frequent.Not sure what else to do ,The jeep has been a solid runner since new with very few problems and my wife and I don't want to
get rid of it. I have no complaints with this car it has been very reliable other than this one issue. Any advice will be greatly appreciated.

Thanks,
Max
Hey Max,

I am sorry to hear about the continued no start condition in your Grand Cherokee. Unfortunately, I could not find a service bulletin related to your vehicle. I would advise you to have the vehicle formally diagnosed at an FCA certified dealership. Please let me know if you have any further questions.
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post #3 of 3 Old 11-24-2015, 10:29 AM
lvum4x4
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somehow this post got duplicated but here is the response I posted in the other one:

Here is where you will want to start:

1. Remove the negative cable from the battery and put a test light between the removed cable and the negative battery terminal. If you do have a draw, the light should illuminate; the brightness will determine whether you have a strong or weak draw. For reference walk over and open the door, the test light should get really bright..

2. Go to the fuse box and start removing individual fuses (be sure the doors are closed so you are not seeing the draw from the dome lights) one at a time and see if test light goes out (you may need to have your wife stay with the light and have her tell you when it goes out). This will help you find the individual circuit that has the draw or short.

3. Start chasing that circuit downstream by disconnecting the major loom junctions until you have found the section that is affected.



It can be a tedious process but should slowly help you identify the problematic area and that may point to a recent repair or change that will explain the draw.

Good luck...

Kevin Bentley

Build:
http://www.jeepforum.com/forum/f197/bentley-project-wj-build-thread-870037
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