Yes, this battery problem is a real pain in the ass. The biggest problem is not driving this car everyday. The battery if not fully charged will die in a heartbeat from sitting just two or three days. To counter this problem charge both batteries at the same time. You will need your plug in for your high voltage battery and a small charger for your low voltage start battery. This will give you what you need to counter your battery problem and give your battery a longer life span as well. I hope this helps. God Bless and best of luck. Robert

I am ready to get rid of this car!!! I have had it since May and the front end was loose, causing a clunking sound one week off the lot. Then one week here in Idaho and the 12v battery died. (3 yrs old) and the plug in charger does not work. It has as default cut off and has never worked on this car, it has since been recalled. The navigation is horrible, she does not understand anything I am saying, and gives false directions. I have never had such problems with VOLVO. Yes, you pay more but no picky problems like this. PLUS the attitude of the service departments is just a bit contentious. The good mileage is just not worth the hassle. IF I did not have a loan on this car I would trade it in today. I plan on keeping it through the first quarter of next year then trading it in for a real car which is too bad as it drives well, is very comfortable and is basically a good car but the issues with the electric are not good in the climate of Idaho.

Car is dead for the fourth time. Drove the car two days, third day went to start the vehicle and all electrical systems were dead-no horn no dome light. Called Ford roadside assistance and waited for a tow. C-Max can't be shifted into neutral so the tow truck had to drag the car a bit. Ford dealer/Svc sent a tech to my house to read the "codes" prior to the tow. No abnormal codes read just that the battery was low. Now several days later and still at the service center, the car has started every day, I'm told. Car was purchased in California so Lemon law seems to not apply since the car was just over 18000 miles but under 18 months. (The car was reregistered in NC) The vehicle is completely unreliable. Was so happy to get an American plugin hybrid car but based on all the complaints out on the web there seems to be a big problem with Ford C-Max Hybrids. Very surprised there hasn't been a class action suit yet for inoperable due to electrical failure of the 12v system.

Cant wait for the lease on this lemon to be over! Dealer has been kind but ultimately ineffectual since the problem persists. Ford Customer Service Proved to be ineffectual as well since Lemon Laws vary so much from state to state they just didn't care that the vehicle is dead since they were working on the problem. local service stated they were waiting for information from Ford Engineering. When I mentioned this to the Customer service manager she said "she was unable to communicate with the engineers. See a problem here? Bottom line Ford is selling a vehicle that has a major electrical flaw. Don't buy a Ford C-MAX Energi!