2016 C Max Energi, about 38000 miles. Zero problems until this incident. Went out to start car, everything was dead. Called service, they jumped 12v battery. When car started, yellow wrench illuminated. Drove car around neighborhood for about 20 min at 40-50 mph.
I changed the battery and everything came back to normal. It was a harsh winter (like -35°C) and I was doing short distance, so it really didn't help the battery, which was probably already old. I still have a weird electrical problem tho. If I do a long distance, 1h30 or more, and stop the car, and then start it again later during the day
Here's what you need to know about Ford C-Max service keyless reset: If your Ford C-Max keyless entry system is not working, you should first check the battery. The key fob for your C-Max uses a small battery, and if this battery dies, the keyless entry system will not work. You can usually tell if the battery is dead if the critical fob feels
The Leaf and the C-max have in common air cooled batteries (the Focus Hybrid and Volt are water cooled I believe), so it would be good to track our capacity loss over time to see how the C-max does. Time will tell if the heat takes an unreasonable toll on our batteries, but I'm not sure how it would be detected by most people aside from a
"Battery fequently goes dead and I have to charge overnite. Gasa mileage has nevermet close to sticker, s'ticker 47 mpg city and highway. (2013 Ford C-MAX Energi SEL 2.0-L 4 Cyl plug-in hybrid
CMax dead - no lights, no dash, no screen, nothing. Yesterday morning, I went to jump in my cmax and go to work. When I got in, nothing was lit up. No lights, the screen was black, pushing the button made nothing happen. My first thought - must have run down the battery somehow.
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ford c max battery dead
