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Primary and Aux Battery Charging


Recommended Posts

I have lost my "Comfort Setting" and started to look into battery issues. I have the dual battery set up. I first plugged the C-Tek under the hood, battery light indicator was red and after a night charge it was green. Still no comfort settings. This all happened after I got car back from getting tires changed out and my wife used the spare key which resets the comfort setting to factory. When I went in to change back the option was gone! So I am hoping and assuming they left the key in the ignition (even though i said not too) while they changed out the tires.

So today I removed my rear battery....easiest....and it is on my real battery charger. It read at 12.5 or 80% charge. I was still able to start the car, which I thought to be weird because I thought the rear battery was used for only starting the car. I did it just to see if I could.

I connected the C-Tek charger under the hood and the indicator was red. Hoping an overnight charge will resolve the problem. I replaced the battery under the seat 2 summers ago so it is still under warranty thankfully!. But I was wondering if I can connect a battery charger to the posts under the hood while second battery is removed or do I need to full remove the battery from the car? Last thing i want to do is fry the electronics.

Thanks!!

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Sounds like elex modules may have amnesia due to the power loss.

A trip to the dealer for reprogramming may be required.

On Kessy equipped vehicles, the rear battery is used for starting when the metal key used in the ignition.

If the plastic fob is used, the main under seat battery starts the engine.

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