Any ideas ?? I have a 95 Jeep Grand Cherokee 4wd. It has an intermittent electrical problem. On occasion it wont start and has to be jumped with another vehicle. Putting a meter on the battery shows it being drained .. Without the ignition key in. If I disconnect the battery it goes back up to 12volts. After it is jumped it will "usually" continue to start up but sometimes just goes dead again. The battery has been checked and holds a charge. When it is running it runs great. I have checked all the fuses and none are blown. Only other elec problems are .. one dead door lock and back hatch light is intermittent. Anyone have any clues ?? I have to find the solution to this. Everytime I think I have it fixed it does it all over again. ????
Make sure to check the battery cables as well, pull them off and clean them if they are corroded. I have a wrangler but had to have my vehicle jumped a few times I thought it was an interior light issue, but turned out to be a poor connection between the terminals and the cable.
It's Homeless Harry. I had the same problem - a few mechanics checked it out, tried to "fix" the problem - no solution. Given I leave my Jeep open, I suspect that Homeless Harry sleeps in my Jeep at night - and given he's afraid of the dark, leaves the door ajar - the interior light serving to keep him safe from the bogeyman.
Anyway, my main mechanic is a no-nonsense kinda guy - so he offered me two solutions - both involving a battery disconnect. You can buy a cheap one that attaches to the battery (the route I took), or they can install it inside the Jeep.
Luckily for me, Homeless Harry is a crackhead and can't figure out how to re-connect the battery, so he's moved on to another Jeep. Possibly yours?
At any rate, it works. No clue what's causing it, and I kinda don't care anymore. But my no-nonsense mechanic did relate that it wasn't fouling anything else up. Best of luck.