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Old 11-21-2016, 07:56 AM   #1
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Dead battery

I'm sure this had been discussed to death, but since it happened to me, my interest level increased 😊. Pulled into camp site last night to find my toad battery was dead. I had started the vehicle about 3 hours earlier and everything was fine.

Toad is a 2013 Ford Flex AWD. Before leaving, I called Ford, went by the dealership, read the owners manual, and the only instructions were to run 5 minutes, shift from park to drive to reverse, then to neutral. I then to the key to 2nd accessories position, and supposedly the car is ready to go.

Any thoughts about how/what should happen?
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Old 11-21-2016, 08:12 AM   #2
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There is probably a fuse that you can pull to help with the setup. I have had that problem on occasion and now I carry a small battery charger in the toad.
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Old 11-21-2016, 08:46 AM   #3
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Good advice. Plan to do that as well. If it as simple as pulling a fuse, any idea which fuse?
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Old 11-21-2016, 09:10 AM   #4
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I towed a 2010 Taurus for a couple years and never had a battery problem. Similar set up as the Flex. If you are new to this vehicle, here's a couple of suggestions,

Have the battery load tested. It may be a battery issue.

Do you have a charge line from the MH battery to the toad battery? The term is charge line but in reality it's simply a means of maintaining the battery.
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Old 11-21-2016, 09:11 AM   #5
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Your battery could be in the group of low quality batteries car manufacturers sometimes use to save money...like cheap tires they put on new vehicles. So you might want to stop at an auto store and have it load tested.

What I did with my car to avoid the problem you're seeing was to add a wire from the RVs house batteries to an unused pin on the 7-way connector. That put 12V charging voltage back to the car when the engine is running or the RV is plugged into shore power through the electrical cord and usually the 6-way connector on the toad. Then at the car I added a Schottky diode to that line and wired directly to the car's battery (through an inline fuse).

That way, I can drive all day, park all night without unhooking, and do that several days in a row without worrying about my car's battery discharging, or it needing to be started. This also allows switching on the car's side markers while towing for improved visibility by other drivers. They are powered from the car's battery and aren't often wired up when a toad is customized for towing.
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Old 11-21-2016, 12:01 PM   #6
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I also installed a charge line to maintain the battery in my toad. Don't have to pull fuses, don't have to start the engine every stop.
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Old 11-21-2016, 08:21 PM   #7
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Also, planning on buying a new battery for your toad. These days, car batteries don't handle being run down to such a low level of charge.

Walmart has a two year free replacement program for auto batteries.
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Old 11-21-2016, 09:36 PM   #8
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I pull a 2013 Ford Edge and had the same problem. I believe the problem is that the electronic display "times out" after a short period but comes back to life every time the supplemental braking system engaged.

I started carrying a "jump" box. This solved my immediate problem but still was a PITA and eventually destroyed the battery.

I finally ran charge wires from the chassis batteries to the toad battery. Probably over did it by pulling 10Ga wires but it solved all my problems.
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