BobJustBob Posted May 4, 2013 Report Share Posted May 4, 2013 I got my C-Max serviced for the 12 volt battery problem today at the dealership at which I bought the vehicle. They performed the service outlined on the following two technical service bulletins (TSB's): 13-4-13 Reprogram the FCDIM and clear codes13-5-1 Reprogram the direct current converter module It took a little over three hours to perform the service. Almost all of this time was spent downloading the software fixes into my car which they plugged directly into the LAN at the dealership. These 21st century cars are as much computers as they are vehicles! I'm keeping my fingers crossed that this fixes the problem. I had the 12 volt battery die twice within the same week during the last week in March. By the way, thanks to everyone in this subforum who made me aware of the 13-4-13 TSB, for I am the one who made the dealership aware of this fix and insisted that they look into it. Jus-A-CMax and rvc 2 Link to comment Share on other sites More sharing options...
Jus-A-CMax Posted May 4, 2013 Report Share Posted May 4, 2013 Good to hear BobjusBob :rockon: Keep us posted on how this patch works and we got all our fingers crossed for u as well :) Link to comment Share on other sites More sharing options...
RachelnLa Posted May 4, 2013 Report Share Posted May 4, 2013 Yeah! Hopefully this is just what you needed. Link to comment Share on other sites More sharing options...
ArizonaEnergi Posted May 4, 2013 Report Share Posted May 4, 2013 I had the DCDC software upgrade yesterday as well. I have not had a dead battery, but do see very low voltages on what should be a fully charged battery (11.9v-12.4v) so I'm hoping this change will improve the charge level. Link to comment Share on other sites More sharing options...
ScubaDadMiami Posted May 4, 2013 Report Share Posted May 4, 2013 These 21st century cars are as much computers as they are vehicles!That's one of the big pluses that got me to place my order. Link to comment Share on other sites More sharing options...
67gtcougar Posted May 7, 2013 Report Share Posted May 7, 2013 Has anyone seen an improvement since the "fix"? My Energi is going to the dealer tomorrow. I saw 12.3 volts yesterday after the car had been out for a quick 3 mile drive and then sat for about 2 hours. (Earlier in the day it was driven about 18 miles total and recharged.) Every night I'm making sure that the voltage is closer to 12.9 volts, or I'm charging it with a 12 volt charger to make sure that my wife can use it the next day without any problems. Link to comment Share on other sites More sharing options...
ArizonaEnergi Posted May 7, 2013 Report Share Posted May 7, 2013 We made one trip yesterday, about 15 minutes going each way, so not much time to charge the battery. I just checked and its at 12.2v which is not great, but better than the 11.9 I saw before the fix. I wonder if I left the car "running" for an hour what the result would be, as I assume the charge rate at "idle" would be that same as that at driving speeds. I might try that today. Link to comment Share on other sites More sharing options...
67gtcougar Posted May 7, 2013 Report Share Posted May 7, 2013 We made one trip yesterday, about 15 minutes going each way, so not much time to charge the battery. I just checked and its at 12.2v which is not great, but better than the 11.9 I saw before the fix. I wonder if I left the car "running" for an hour what the result would be, as I assume the charge rate at "idle" would be that same as that at driving speeds. I might try that today.Thanks for the update. Now I wonder if I'm wasting my time taking it to the dealer. I will also try your test. Could you check the voltage before and after your trip? Also please note if the battery cooling fans are operating. If there is a load on the battery it will definitely dip down a few tenths of a volt. I might try to purchasing a cheap car voltmeter that plugs in to the 12 volt socket to monitor the battery voltage all the time. Link to comment Share on other sites More sharing options...
ArizonaEnergi Posted May 7, 2013 Report Share Posted May 7, 2013 (edited) I use a digital plug in meter, similar to but not as nice as this one: http://www.amazon.com/Equus-3721-Battery-Charging-Monitor/dp/B000EVWDU0/ref=wl_it_dp_o_pd_nS_nC?ie=UTF8&colid=1VYZFBVSO1X0Y&coliid=I27DCAGZYVA68Z I only check the voltage for this purpose (not charging) when the car is off with the front 12v outlet temporarily activated, so no fans running. Edited May 7, 2013 by ArizonaEnergi Link to comment Share on other sites More sharing options...
67gtcougar Posted May 7, 2013 Report Share Posted May 7, 2013 (edited) I use a digital plug in meter, similar to but not as nice as this one: http://www.amazon.com/Equus-3721-Battery-Charging-Monitor/dp/B000EVWDU0/ref=wl_it_dp_o_pd_nS_nC?ie=UTF8&colid=1VYZFBVSO1X0Y&coliid=I27DCAGZYVA68Z I only check the voltage for this purpose (not charging) when the car is off with the front 12v outlet temporarily activated, so no fans running.Thanks. That looks almost perfect. I just ordered a bunch of stuff on Amazon yesterday. Could have got free shipping. My wife had already put the car on the charger before I had a chance to get the initial reading after her last drive. I turned off the charger and it read 11.9 with the door open and 12.2 with it closed. When I plugged it back in it started charging the 12 volt battery. I drove the car 3.5 miles one-way, and the voltage was over 13 every time I checked while it was running. It would be nice to record it real-time to get a trend. Edited May 8, 2013 by 67gtcougar Link to comment Share on other sites More sharing options...
ArizonaEnergi Posted May 8, 2013 Report Share Posted May 8, 2013 Yeah, I always have one more thing from Amazon that I should have included in an order! Did throw in those puddle LED lights today to a portable radio order though. I went out today. On the first segment of the trip the voltage was reading at 14.5v which is an excellent charging volt. Went 5 miles. Two hours later went another 5 miles but this time the voltage was reading 13.8v. So either the batt got a good charge on the first trip segment, or something else is happening. Will measure resting voltage again after the Energi re-charge is done. Link to comment Share on other sites More sharing options...
67gtcougar Posted May 8, 2013 Report Share Posted May 8, 2013 (edited) Yeah, I always have one more thing from Amazon that I should have included in an order! Did throw in those puddle LED lights today to a portable radio order though. I went out today. On the first segment of the trip the voltage was reading at 14.5v which is an excellent charging volt. Went 5 miles. Two hours later went another 5 miles but this time the voltage was reading 13.8v. So either the batt got a good charge on the first trip segment, or something else is happening. Will measure resting voltage again after the Energi re-charge is done. I also saw the voltage start out at over 14 volts and then read somewhere over 13 when I arrived with the car still running. Edited May 8, 2013 by 67gtcougar Link to comment Share on other sites More sharing options...
Adair Posted May 16, 2013 Report Share Posted May 16, 2013 We've been asked to combine the battery threads into 2....Zhackwyatt's poll and the Battery Dead thread. This is my 5th attempt at doing this...........here's hoping it works. http://fordcmaxhybri...dead#entry11225 http://fordcmaxhybri...dead#entry11661 Link to comment Share on other sites More sharing options...
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