- #5 of 14
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Intermittant Battery Drain
by gracie01
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May 21, 2009 (12:21 pm)
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2006 Ford Escape Hybrid - Chronic intermittent battery drain. Sits for 48 hours and battery is dead. Batteries have been replaced; ABS has been replaced. Has been to dealership multiple times in the past 6 months. They say they have to catch the power surge at the time it happens or they cannot see the problem. Has anybody had this problem?
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- #6 of 14
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Re: Intermittant Battery Drain [gracie01]
by dsteak
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Jun 16, 2009 (12:33 pm)
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Replying to: gracie01 (May 21, 2009 12:21 pm)
as of last week, i'm having this problem. i left it at the airport for 4 days and when i came back the battery was dead. i've had it jumped, driven it for days, but it keeps dying. funny thing is, i can always get it started. if i keep turning the key, eventually, the electrics kick in and it starts.
do you know what your problem is? taking it to the dealer tomorrow.
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- #7 of 14
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Re: Intermittant Battery Drain [dsteak]
by odoug
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Jul 25, 2009 (2:16 pm)
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Replying to: dsteak (Jun 16, 2009 12:33 pm)
did you find a solution?
i'm having the same problem
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- #8 of 14
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Re: Intermittant Battery Drain [gracie01]
by gpelletier
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Nov 04, 2009 (1:59 pm)
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Replying to: gracie01 (May 21, 2009 12:21 pm)
My car is in the shop right now for the same exact problem. I'm getting the battery replaced for the first time, but it started losing it's charge a couple of weeks ago. Due to unemployment, I have been staying more local and the car has been idle for periods of time. I have had it jumped, can drive for 2-3 days and then it dies again. Yesterday it was charged, I ran a few errands and it was fine and by the evening it was dead again. Unfortunately, I already have 80,000 miles so it is passed the warranty.
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- #9 of 14
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Re: Intermittant Battery Drain [gracie01]
by carysbluesky
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Nov 04, 2009 (2:25 pm)
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Replying to: gracie01 (May 21, 2009 12:21 pm)
First check your alternator. If its not charging, you now know the problem. If it charges and your battery is more than three years old, you're about due for a new 12 V battery. Remember, battery up front has nothing to do with the one that assists in powering your car. If you have an alarm and you don't drive long enough for the alternator to recharge the 12V batt. your battery will live less than normal; about three years depending on the temps and climate you live in. I.e., short trips in very hot Wx using your AC will shorten your battery's life. Again, the 300v batt. in the back has nothing to do with any of your electrical auto's needs other than to assist the drivetrain.
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- #10 of 14
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Re: Intermittant Battery Drain [carysbluesky]
by gpelletier
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Nov 04, 2009 (3:40 pm)
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Replying to: carysbluesky (Nov 04, 2009 2:25 pm)
Thanks, carybluesky! That was extremely useful information and sounds quite accurate for my situation. My battery was 3 years old so I had it replaced today. Hopefully, that will take care of the problem. I will check with the FORD Service Center and make sure they tested the alternator as you suggested. I will keep you all posted.
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- #11 of 14
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Re: Intermittant Battery Drain [gracie01]
by lindazilla
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Dec 01, 2009 (6:13 pm)
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Replying to: gracie01 (May 21, 2009 12:21 pm)
I have been dealing with this same problem on my 2005 Ford Escape Hybrid for the last few months. 12v battery has been replaced twice, car has been jumped multiple times, have yet to find a mechanic that can figure out where the battery drain is coming from. At the end of my rope with Ford at this point. 
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- #12 of 14
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Re: Intermittant Battery Drain [carysbluesky]
by stevedebi
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Dec 02, 2009 (8:20 am)
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Replying to: carysbluesky (Nov 04, 2009 2:25 pm)
" Again, the 300v batt. in the back has nothing to do with any of your electrical auto's needs other than to assist the drivetrain. "
Not quite. The traction battery also starts the engine by spinning it up via the electric generator.
One interesting thing about the FEH is that the 12v battery is only needed to supply power to the electronics (when starting the vehicle) - it does not actually provide startup power.
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- #13 of 14
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Re: Intermittant Battery Drain [gracie01]
by carysbluesky
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Dec 02, 2009 (8:44 am)
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Replying to: gracie01 (May 21, 2009 12:21 pm)
Did you have an after market car alarm or any electronics installed? If so, you may find the culprit for the drain on your battery. It only takes one small bulb to drain your batt. in two days, especially if it's cold. It took over three months without use to drain my batt. A slow charge over six hrs brought it back to life; and, have no problems since.
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- #14 of 14
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Re: Intermittant Battery Drain [stevedebi]
by carysbluesky
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Dec 02, 2009 (8:47 am)
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Replying to: stevedebi (Dec 02, 2009 8:20 am)
You're really splitting hairs. Without juice to the starter relay, you have no start; and, the relay gets its power directly from the 12v batt.
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