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Wife has a 2013 Accord Coupe EX-L, Navi (every electrical accessory). When new it continuously boiled the water out of the Honda battery. So after about a year, I bought an Optima AGM battery (Yellow). Yesterday, she calls and says that the car wont start (Power on, but no start). Towed to Honda dealership. They tell me, bad battery. Replaced battery, car was checked and scanned. No faults, no codes. This reaffirms my feeling that the battery is being overcharged by the car. I often check battery voltage at home with a multi-meter. This car has always shown at or more than 12.6v at the terminals after having sit overnight (not just after being parked). Do I have to by a new battery every 12-15 months now to make sure that the wife isn’t stranded? 2013 Honda has 85,000 miles. She commutes far.
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Unfortunately, a vast majority of dealerships are not set up to provide customer service. They simply exist to separate you from your money.
Glad you figured it out though, it might be worth writing the owner or GM a formal letter calling out their bullshit. Especially if one dime was spent after the TSB was published. Or go back for something simple like an oil change and give them zeros on the customer service survey, now that would piss them off.
I was super excited when I replaced the battery sensor, but that actually didn’t seem to end up helping. Since the sensor is on the ground side, I checked the grounds only to find that they weren’t so great (i.e., a lot of paint underneath the battery ground to chassis), and that the engine to chassis was loose (and it also had a lot of paint underneath). In fact when I took off the ground from the battery, it didn’t even spark. So, I sanded down the chassis grounds and things have been pretty good. It still charges slightly higher than I want, but I think the grounds and the bigger battery will be it. If I was going to go one more step, I think I’d replace the alternator, but grounds and big battery seem to be the deal. Sorry for the previous post as I was really thinking that was it.
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