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Old 10-16-2015, 01:14 PM   #1
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dead battery in the morning

So I had to get it jumped later that night, then next morning dead again. Got it jumped again and went to Ford. They tested it as working properly and cannot replace it. Well, in my experience with bad batteries, is it true that once the alternator recharges the battery, it seems like the battery has no issues until after several hours later it is drained?

Or is it a parasitic power draw somewhere? I don't think it is the led license bulbs that I put it since I had led's in before those and blew many fuses and simply replaced them therefore I got new led bulb brand. So I went back to stock bulbs for now.

The radio display also just went blank for good all the time now which it never does (but radio works fine well sorta) so I just delt with it. Sometimes it comes on, sometimes not, or it would glitch out with the text. Now it just had enough glitching and its dead. Except if I wanna use usb stick for music I cannot see the display and will try voice command. Sometimes it skips over the usb stick and it skips over FM1 when the display is off. Anyway that radio gotta go and could be the power draw. I will pull that thing out and chuck it down a cliff.

So I pull the radio fuse to see if thats drawing power. Something may be drawing power when the car is off.

Or it is a bad battery.

Thoughts?

PS, I'll be buying a battery jump pack and tire compressor since you know that's the next thing gonna happen.
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Old 10-16-2015, 01:27 PM   #2
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I lean a bit towards parasitic draw. The radio seems like something to point a finger to. How to do so I don't know lol

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Old 10-16-2015, 01:44 PM   #3
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wtty? I'd guess radio. Google how to use a test light to test for current draw. You disconnect the negative of the battery and hook up one end of the tester to the - batt and one by one check all ckts. If it's drawing the tester will complete the ckt and light.
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Old 10-16-2015, 01:55 PM   #4
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I think I'll connect the volt meter to the battery, and pull radio fuse to see if draw is eliminated.
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Old 10-16-2015, 10:08 PM   #5
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If under warrenty just drop off at ford one evening., leave overnight then they can duplicate oroblem. Tell them while they have it to replace the radio too
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Old 10-16-2015, 11:48 PM   #6
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Do a current test. If negative, (less than a few milli amps)
Bad battery. Do as suggested above, drop it off let it sit overnight.
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Old 10-16-2015, 11:59 PM   #7
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grab a multi-meter and check how much draw is on the battery (plenty of videos online). Then once you see that, keep it connected to where you can see the number, then start pulling fuses. If you pull a fuse and the draw goes down, you have your source.
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Old 10-17-2015, 12:14 AM   #8
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Parasitic current draw can also come from bad diodes in your alternator. They can leak current but the alternator still works fine. Check that first by pulling the plug on it.
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Old 10-17-2015, 09:15 AM   #9
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Quote:
Originally Posted by iguanaman3 View Post
Parasitic current draw can also come from bad diodes in your alternator. They can leak current but the alternator still works fine. Check that first by pulling the plug on it.
Didn't know that. good info..
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Old 10-17-2015, 10:16 AM   #10
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Disconnect your terminal at night. Let it sit with the terminals disconnected.


Reconnect them in the morning.
Draw a conclusion based on what you observe.
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Old 10-17-2015, 09:21 PM   #11
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You have warrenty,use it you paid for it in the price of car, DRAW SHOULD BE LESS THAN 100 MMA
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Old 10-17-2015, 09:37 PM   #12
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Ok so I just removed the fuse to the radio and it started in the morning strong as ever. The radio for some reason doesn't want to shut down when the car is off (even though the radio is not on), probably because the radio is defective and has a short in it.

Sure there is a warranty but I also do not want them running a million tests so sometimes I like to do things myself if I can.
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Old 10-18-2015, 02:16 PM   #13
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Based on your original post, it is a good bet that the radio is the culprit.


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Old 10-18-2015, 07:53 PM   #14
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Based on my experience with newer model vehicles, a bad batter will make everything act crazy.

Try what panther140 said.
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Old 10-19-2015, 07:42 AM   #15
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Quote:
Originally Posted by Billgluckman View Post
Based on my experience with newer model vehicles, a bad batter will make everything act crazy.

Try what panther140 said.
Fine, but you should still plan to do a parasitic current draw test.
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Old 10-19-2015, 03:26 PM   #16
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Quote:
Originally Posted by Robostang View Post
Based on your original post, it is a good bet that the radio is the culprit.


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Car still strong as ever with no power to radio.

I didn't suspect the radio right away. Why? Because it's been glitchy for a year. Display turns off/on whenever it wants. Ok so I just dealt with it. So why in the hell would it suddenly short out even further and drain the battery power when the car is off? Very strange. I figured it was radio since I noticed the display never came on which took a week to realize. I didn't perform a current draw test like I said, I just pulled the fuse.
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