Help! New JKU Battery Dies - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 09-03-2014, 05:36 PM
Thread Starter
  #1
Jeeper
 
AMW_Rubicon_2014's Avatar
 
Join Date: May 2014
Location: Las Vegas, NV
Posts: 168
Help! New JKU Battery Dies

I'm keeping my fingers crossed that someone here can help.

I have a 2014 Rubicon JKU with a hard top. The rear window broke, which was just replaced yesterday. Now, the battery dies after the Jeep sits for hours- was dead first thing this morning, took a jump, and then dead again after work. It ran just fine while I ran around without the top on.

Could it be something with the rear defrost connections to the new window? I'm at a loss- doors were closed, no dome lights on- nothing else has changed except the new rear window with defrost, and the top is back on after being removed for the first time.

HELP!

__________________
3.5" Rubicon Express lift, 18x9 Xtreme Alloy Wheels, 315/70R17" Pro Comp Xtreme MT2 Tires, Smittybilt Stinger Front Bumper, WARN Zeon 10-S Winch, Smittybilt XRC Rear Bumper w/ Tire Carrier,Rigid 50" LED Bar,ACE Rock Sliders/Steps (OEM Rubicon Sliders Too), Rubicon Exhaust Spacer, Stubby Antenna
AMW_Rubicon_2014 is offline   Quote
Old 09-03-2014, 05:44 PM   #2
Supporting Member

WF Supporting Member
 
wayne d's Avatar
 
Join Date: Aug 2013
Location: Blairsville, Georgia
Posts: 999
Dead cell. Happened to me one time on a trip. Pulled into a gas station to fill up and nothing.
Warranty time.

__________________
Best regards from Georgia.
Now Pass the Rum!
Wayne,
2014 Anvil JKU
Thanks to all those that have served and are still serving protecting the freedoms we love.
wayne d is offline   Quote
Old 09-03-2014, 05:46 PM   #3
Jeeper
 
Join Date: Feb 2014
Location: Manassas, VA
Posts: 1,482
Did you have the battery tested and charged after have it jumped?
mikeJKUR is offline   Quote
Sponsored Links
Advertisement
 
Old 09-03-2014, 05:49 PM
Thread Starter
  #4
Jeeper
 
AMW_Rubicon_2014's Avatar
 
Join Date: May 2014
Location: Las Vegas, NV
Posts: 168
Thanks for the quick replies. Haven't had it tested yet. I only have 3,000 miles on it- only three months old. Just seemed really odd that everything worked fine until the rear glass was replaced.
__________________
3.5" Rubicon Express lift, 18x9 Xtreme Alloy Wheels, 315/70R17" Pro Comp Xtreme MT2 Tires, Smittybilt Stinger Front Bumper, WARN Zeon 10-S Winch, Smittybilt XRC Rear Bumper w/ Tire Carrier,Rigid 50" LED Bar,ACE Rock Sliders/Steps (OEM Rubicon Sliders Too), Rubicon Exhaust Spacer, Stubby Antenna
AMW_Rubicon_2014 is offline   Quote
Old 09-03-2014, 05:56 PM   #5
Jeeper
 
Join Date: Feb 2014
Location: Manassas, VA
Posts: 1,482
It is possible that something is stalling on causing a draw on the electrical system but with the simple things first.

Nothing fixes itself.
mikeJKUR is offline   Quote
Old 09-03-2014, 06:30 PM   #6
Supporting Member

WF Supporting Member
 
SteedGun's Avatar
 
Join Date: Dec 2013
Location: Utah - Spirit Home of Jeep
Posts: 2,281
Good excuse to buy a Die Hard Platinum.
__________________
Molon Labe - Carry on!
SteedGun is online now   Quote
Old 09-03-2014, 07:16 PM
Thread Starter
  #7
Jeeper
 
AMW_Rubicon_2014's Avatar
 
Join Date: May 2014
Location: Las Vegas, NV
Posts: 168
Ran it for about 1/2 hour, and then turned it off, and it wouldn't turn over. Jeep is telling me they have to run a 2 1/2 hour diagnostic on it, and they were fairly shitty when I called service. Contemplating jumping it again and just going to have the battery tested somewhere else, and just bite the bullet and buy a "better" battery tonight.
__________________
3.5" Rubicon Express lift, 18x9 Xtreme Alloy Wheels, 315/70R17" Pro Comp Xtreme MT2 Tires, Smittybilt Stinger Front Bumper, WARN Zeon 10-S Winch, Smittybilt XRC Rear Bumper w/ Tire Carrier,Rigid 50" LED Bar,ACE Rock Sliders/Steps (OEM Rubicon Sliders Too), Rubicon Exhaust Spacer, Stubby Antenna
AMW_Rubicon_2014 is offline   Quote
Old 09-03-2014, 10:35 PM   #8
Supporting Member

WF Supporting Member
 
SteedGun's Avatar
 
Join Date: Dec 2013
Location: Utah - Spirit Home of Jeep
Posts: 2,281
My local Jeep dealer stinks too so don't feel bad. I would take it to AutoZone, Pep Boys, O'Reily auto. Any of those places test for free in hopes you buy their battery. Don't buy an Optima. If you are going to get a real good one buy the Sears Die Hard Platinum or Interstate. Since I have many autos in my life I own a battery/alternator tester and good charging gear.

While it is unusual to have a battery fail this soon it can happen. The bad cell comment above it spot on. A bad cell does not always show up right away.
__________________
Molon Labe - Carry on!
SteedGun is online now   Quote
Old 09-03-2014, 10:47 PM   #9
Jeeper
 
DF Jeep's Avatar
 
Join Date: Apr 2013
Location: Southern New Hampshire
Posts: 202
Do a draw test first. Disconnect negative cable. Use a digital volt meter between the cable and post set to DC Amps. If you have over a .05 reading then something is killing the battery. Also fully recharge the battery and test. If it fails it is still under warranty.
__________________
Defend New Hampshire
Live Free or Die
DF Jeep is offline   Quote
Old 09-03-2014, 11:33 PM
Thread Starter
  #10
Jeeper
 
AMW_Rubicon_2014's Avatar
 
Join Date: May 2014
Location: Las Vegas, NV
Posts: 168
Thanks so much to everyone for the quick responses. I'm going to jump it again and go to the dealer first thing tomorrow AM. I know things happen, but I've NEVER had a battery go bad that quickly in a new vehicle, and that with the couple of other problems I've had these first couple months aren't making me become the big Jeep fan I'd hoped to be.
__________________
3.5" Rubicon Express lift, 18x9 Xtreme Alloy Wheels, 315/70R17" Pro Comp Xtreme MT2 Tires, Smittybilt Stinger Front Bumper, WARN Zeon 10-S Winch, Smittybilt XRC Rear Bumper w/ Tire Carrier,Rigid 50" LED Bar,ACE Rock Sliders/Steps (OEM Rubicon Sliders Too), Rubicon Exhaust Spacer, Stubby Antenna
AMW_Rubicon_2014 is offline   Quote
Old 09-04-2014, 04:41 PM   #11
Jeeper
 
Freedom JK's Avatar
 
Join Date: Oct 2013
Location: Baton Rouge, LA
Posts: 2,554
I have never hear of having to test the battery for 2-1/2 hours. I have been to Autozone numerous times and within 2 minutes they can tell me if a battery is dead or not. Bring it to the dealer since it is under warranty. A new battery costs a little over $100 so have them replace it free.

Batteries can be defective and just die early. My previous vehicle was a Toyota Tacoma and when I went to test drive it, it would not start. They had to replace the battery before I could even test drive it. Everything was good after they put a new battery in it. The last battery I had in my Tacoma only lasted 18 months. It was a Autozone Duralast Gold.
Freedom JK is offline   Quote
Old 09-04-2014, 05:28 PM   #12
Jeeper
 
Join Date: Feb 2014
Location: Manassas, VA
Posts: 1,482
Quote:
Originally Posted by Freedom JK View Post
I have never hear of having to test the battery for 2-1/2 hours.
To test no, but to charge it is possible specially if they are using one of the newer machine limit voltage or amperage when charging.
mikeJKUR is offline   Quote
Old 09-06-2014, 12:10 AM
Thread Starter
  #13
Jeeper
 
AMW_Rubicon_2014's Avatar
 
Join Date: May 2014
Location: Las Vegas, NV
Posts: 168
The dealer told me Chrysler requires that they take it through some ridiculous diagnostic that literally takes about two hours. Sears tested it in less than a minute.
AMW_Rubicon_2014 is offline   Quote
Old 09-06-2014, 09:30 PM   #14
Jeeper
 
Freedom JK's Avatar
 
Join Date: Oct 2013
Location: Baton Rouge, LA
Posts: 2,554
Quote:
Originally Posted by AMW_Rubicon_2014 View Post
The dealer told me Chrysler requires that they take it through some ridiculous diagnostic that literally takes about two hours. Sears tested it in less than a minute.
So was the battery bad?
Freedom JK is offline   Quote
Old 09-07-2014, 08:45 AM   #15
Jeeper
 
Join Date: Aug 2013
Posts: 18
I had this happened to my 2013. 2500 miles on it and I changed the radio to after market. No wires were cut the next day battery was dead. Charged it got it to full charge and died again. I unplugged new radio, it still did it. They ran a full day of tests said they could find nothing. I said maybe change the battery, they said no we cant its not bad. After a month of dying all the time when we did not drive it for 2-3 days and checking for negitive draw all the time i figured it out. I found there was a modual that had to do with heat and a/c had some issues. I noticed the light on the a/c was on even when the car was off. So they looked into it and sure enought it was it. Then I wanted the battery replaced and that was a fight. They said its fine , I said its been deep cycled dead over a dozen times. If you got a brand new car would you want this battery. They gave me a new one. So in a nut shell something was wrong with that modual but me changeing the radio triggered the problem to pop up due to a tiny difference in the negitive or positive draw on the electrical system. So the defroster could have triggered something in the car. It is a canbus system. I would want a new battery too.

Good Luck
mark620 is offline   Quote
Old 09-07-2014, 11:00 AM   #16
Jeeper
 
Join Date: May 2014
Location: Lone Star State
Posts: 60
Quote:
Originally Posted by DF Jeep View Post
Do a draw test first. Disconnect negative cable. Use a digital volt meter between the cable and post set to DC Amps. If you have over a .05 reading then something is killing the battery. Also fully recharge the battery and test. If it fails it is still under warranty.
This is a good start.
Also,

1] Yes, fully charge the battery and load test with one of these. I prefer the purely resistive type, non electronic ones.
2] If you suspect the rear glass replacement is involved,,, With ignition off and key out, unplug the rear window defroster and wiper plugs. Check the supply side of the plugs for voltage. There should be none.
3] Even if no voltage is found at the plugs, leave them unplugged to see if this corrects the problem.
If the problem still exists after the above, at least you've eliminated the battery and rear window area.
4] Use 2 & 3 for any other suspect areas, if they can be isolated.

You can also do the draw test at any suspected area by disconnecting only 1 wire there, and using the DVM inline, being mindful of polarity to prevent blowing a fuse on the meter.
4art is offline   Quote
Old 09-07-2014, 12:45 PM   #17
Supporting Member

WF Supporting Member
 
SteedGun's Avatar
 
Join Date: Dec 2013
Location: Utah - Spirit Home of Jeep
Posts: 2,281
Quote:
Originally Posted by mark620 View Post
I had this happened to my 2013. 2500 miles on it and I changed the radio to after market. No wires were cut the next day battery was dead. Charged it got it to full charge and died again. I unplugged new radio, it still did it. They ran a full day of tests said they could find nothing. I said maybe change the battery, they said no we cant its not bad. After a month of dying all the time when we did not drive it for 2-3 days and checking for negitive draw all the time i figured it out. I found there was a modual that had to do with heat and a/c had some issues. I noticed the light on the a/c was on even when the car was off. So they looked into it and sure enought it was it. Then I wanted the battery replaced and that was a fight. They said its fine , I said its been deep cycled dead over a dozen times. If you got a brand new car would you want this battery. They gave me a new one. So in a nut shell something was wrong with that modual but me changeing the radio triggered the problem to pop up due to a tiny difference in the negitive or positive draw on the electrical system. So the defroster could have triggered something in the car. It is a canbus system. I would want a new battery too.

Good Luck
Yes, you do. Nice work. Stock batteries are not really deep cycle batteries designed for that many draw downs. Yes, they will draw down a number of times but too many times and you are toast. They are not a true deep cycle battery like Sears Die Hard. I would say based on your story that you were flirting with the boink line.

__________________
Molon Labe - Carry on!
SteedGun is online now   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off






All times are GMT -5. The time now is 01:25 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, Gladiator, Mopar and Grand Cherokee are copyrighted and trademarked to FCA US LLC.
Wranglerforum.com is not in any way associated with FCA US LLC.