I've found my battery dead a couple times. Alternator seems ok putting out around 14.5 volts The dealer just replaced my battery even though I didn't think that was the issue. The drain seems relatively random. It was ok for 5 days at the airport but the last two days I've found it almost completely drained in the morning. I inserted an amp meter in the battery circuit and can see things turning off over a period of about a minute. With the interior lights it's around 5.5 amps. When they turn off it's 1.5 amps. When the audio amplifier shuts down the load drops to .5 amps. The current continues to fall until it reaches about 40 mA (0.040 amps) after a minute. I suppose that won't discharge the battery overnight but I sense something is "sticking" on occasionally. I don't know what the dealer could do different. I bet I'll have a couple no-problem-found wasted days if I drop it off for service. Any thoughts?
I am having the exact same problem with my 2011 Liberty. I have had it in the shop six times in the last nine months, and so far the alternator and the battery have been replaced, and the problem continues. I just got it out of the shop yesterday, and this time they had a Chrysler Field Engineer there to look at it. The result...they disconnected the dealer installed aftermarket backup camera, and I am to drive it for a while and see if the problem has gone away....yeah right.
Here is the real kicker, I puchased this vehicle new in April of 2012, and it is not even a year old, and only has 5300 miles on it. I design electronics, and have told the dealership several times, that there is some sort of parasitic drain that periodically occurs when one or more of their systems does not shut down. They just keep checking the charging system, and the battery. I even connected a battery charger on one of the mornings that it was dead. The battery voltage read around 7V before connecting the charger, and I set the charger for 10 or 20 amps charge rate (can't remember which one), and let it sit for about 4 hours. Guess what, the battery voltage then measured UNDER 7V after charging for 4 hours, so the drain was still there. I have noticed that if the voltage drops in the 6v or lower range, the drain stops (sounds like a low voltage reset).
My Liberty has the following options:
Selec Trac 4x4, Navigation, Auto Climate Control, Remote Start, Backup Sensors, Tow Package, Sky Slider, and Backup Camera (aftermarket dealer installed at time of sale)
Don't know if any of those options are causing the problem, but thought I would list them.
If anyone has any ideas, I would really appreciate your thoughts.
Last edited by ZLIBERTY2011; 01-17-2013 at 09:36 AM..
Is everything working allright? There is definitely a gremlin (s) in there. I wonder if it is not just one thing but multiple just because that is a lot of drain on the battery. Good luck, I wosh I coild help you out more, but if you could keep us posted that would great.
When you get knee-deep in a situation, floor it.
Everything works without issue on my Jeep. The problem is that about every six weeks or so, the battery drains down to under 10v overnight, so that it will not start without a jumpstart in the morning. Notice that it is getting drained over a period of about 12-14 hours. I drive my 2011 Liberty every day, and my round trip to work is about 12-13 miles. I have to be careful what I do to find the problem, or I could invalidate the warranty. It has been towed to the dealership twice because they did not want me to jumpstart it, so that they could see how dead the battery is.
My window sticker shows my radio to be the "Media Center 430N CD/DVD/MP3/HDD/NAV"
I don't know if this helps, but the backup camera that is now currently disconnected, was (according to the Chrysler Field Engineer) spliced into the Navigation screen with some sort of video switch box. This is the backup camera that the dealer installed before I took possession of the vehicle.
I keep the Jeep in my garage at night, and no one else drives it.
I got a Fluke clamp-on DC ammeter so I can now easily read the current in and out of the battery without disturbing anything. I have isolated the problem to fuse M13 which is one of the 3 Ignition Off Draw circuits. According to the manual it feeds: Cabin Compartment Node, Wireless Control Module, Clock and Multifunction Control Switch. I read .8 amp continuous draw after everything else shuts down. At least I narrowed it down. Also, I observed in total darkness you could just see a very very faint red glow from the two blue digital displays. That passes the smell test by being on the M13 circuit. I've made an appointment with the dealer and will let you know what they find. I bet I'll have to take my Fluke meter with me.
Ok, got it figured out. The aftermarket backup camera switchbox that was inserted in-between my NAV system and the display was causing the problem. It would sometimes keep the entire audio/NAV system from shutting off, and would drain the battery. The dealer has since replaced it with a new rear view mirror with integrated LCD for the backup camera, and the switchbox that was inserted between the NAV system and screen has been removed.