2011edgese Posted April 29, 2015 Report Share Posted April 29, 2015 Anyone know anything about this? I replaced my battery last week and just came across how you have to reset the bcm to get the system to charge it properly . I just threw it in and its working fine. I did plug in my actron scan tool. The voltage ranges between 14.3 and 13.0 volts. I read how you have to throw the batter in and not touch it for 8hours to have the bcm learn the charge state so it can work properly. If not done, it will never charge it like a new battery. And read on other sites that driving the car normal with time the bcm will reset itself if there is no problems. Who is correct? Apparently you have to use a ford scan tool to reset it. Now im worried. Lol Quote Link to comment Share on other sites More sharing options...
2011edgese Posted April 30, 2015 Author Report Share Posted April 30, 2015 I think you don't need the ford tool. Found this in the manual. Anyone comfirm this resets the bcm? Quote Link to comment Share on other sites More sharing options...
omar302 Posted April 30, 2015 Report Share Posted April 30, 2015 I think the 8 hour process is to reset the battery saver feature that is in the BCM. What's written in the owners manual is for the PCM (powertrain control module) relearning process. Quote Link to comment Share on other sites More sharing options...
2011edgese Posted April 30, 2015 Author Report Share Posted April 30, 2015 Ahh ok. I went ahead and did the procedure that i posted. It did something though. The voltage is higher now. Before it would get charged between 12.7 and 13.8. Now its charging between 13.9 and 14.6. So i think it did something. I ended up going to the car wash. Unplugged the battery and detailed the car for like a hour. Then pluggedcthe battery and did the steps. Quote Link to comment Share on other sites More sharing options...
2011edgese Posted April 30, 2015 Author Report Share Posted April 30, 2015 Anyone think this is normal charging? I think it is on new charging system. Now that it has settled from programing this is what i got this morning after driving for 1 hour. Averages 13.9v. Yesterday it went asfar as 14.7v amd never dipped past 14v. This morning is a different story. But i recall this voltage being normal on these systems. 1 Quote Link to comment Share on other sites More sharing options...
2011edgese Posted April 30, 2015 Author Report Share Posted April 30, 2015 Btw.. i think the old system was better. On older cars with straight 14.5 constant charging , the batteries used to last a minimum of 6 years and sometimes 8years. These new systems suck in my opinion . But technology must progress. Quote Link to comment Share on other sites More sharing options...
akirby Posted April 30, 2015 Report Share Posted April 30, 2015 Yes the alternator does variable charging but that's not what is killing batteries. It's the added current draw from all the new electronics including when the vehicle is not running. 1 Quote Link to comment Share on other sites More sharing options...
ls973800 Posted April 30, 2015 Report Share Posted April 30, 2015 It is truly amazing what lengths car manufacturers take to try and increase the fuel mileage. On my Chevrolet Traverse the alternator varies from 11 volts to just over 14 volts. It is some type of special programming to prevent the alternator from always being under load. It monitors your present driving and the state of the battery, and determines when to charge it and when not to. Somehow this helps with MPG. How it really helps, I don't understand. Heck, the alternator is spinning anyhow with the serpentine belt all the time. Maybe it's similar to the A/C compressor free spinning when the A/C isn't on? Quote Link to comment Share on other sites More sharing options...
2011edgese Posted April 30, 2015 Author Report Share Posted April 30, 2015 Yes the alternator does variable charging but that's not what is killing batteries. It's the added current draw from all the new electronics including when the vehicle is not running. agreed. Quote Link to comment Share on other sites More sharing options...
akirby Posted April 30, 2015 Report Share Posted April 30, 2015 It is truly amazing what lengths car manufacturers take to try and increase the fuel mileage. On my Chevrolet Traverse the alternator varies from 11 volts to just over 14 volts. It is some type of special programming to prevent the alternator from always being under load. It monitors your present driving and the state of the battery, and determines when to charge it and when not to. Somehow this helps with MPG. How it really helps, I don't understand. Heck, the alternator is spinning anyhow with the serpentine belt all the time. Maybe it's similar to the A/C compressor free spinning when the A/C isn't on? The same way the pulley for the A/C compressor is always spinning but only engages when necessary. It's like the difference between spinning a car wheel with it in neutral versus in gear. In neutral there is virtually no load so it's not robbing any power from the engine. When engaged it's robbing torque. Quote Link to comment Share on other sites More sharing options...
2011edgese Posted April 30, 2015 Author Report Share Posted April 30, 2015 It is truly amazing what lengths car manufacturers take to try and increase the fuel mileage. On my Chevrolet Traverse the alternator varies from 11 volts to just over 14 volts. It is some type of special programming to prevent the alternator from always being under load. It monitors your present driving and the state of the battery, and determines when to charge it and when not to. Somehow this helps with MPG. How it really helps, I don't understand. Heck, the alternator is spinning anyhow with the serpentine belt all the time. Maybe it's similar to the A/C compressor free spinning when the A/C isn't on? i don't think the battery being regulated gives you better mpg. Butb then again. . Regulating it to create a sufficient spark on a old plugs can give u good mpg. But on a healthy engine, i don't see it doing much. I could be wrong. Quote Link to comment Share on other sites More sharing options...
2011edgese Posted April 30, 2015 Author Report Share Posted April 30, 2015 The same way the pulley for the A/C compressor is always spinning but only engages when necessary. It's like the difference between spinning a car wheel with it in neutral versus in gear. In neutral there is virtually no load so it's not robbing any power from the engine. When engaged it's robbing torque. i think the alternator is still old style. Always spins. What regulates the voltage is the pcm with the bcm. Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted April 30, 2015 Report Share Posted April 30, 2015 The battery voltage on my '07 (not on a "smart" system like the 2011+) is reading about 13.9 - 14.4 when the Edge is running, rarely if ever above or below. The battery IS new, put it in a couple of months ago. Quote Link to comment Share on other sites More sharing options...
akirby Posted April 30, 2015 Report Share Posted April 30, 2015 i think the alternator is still old style. Always spins. What regulates the voltage is the pcm with the bcm. The pulley spins but the load on the engine is varied, otherwise there would be no fuel savings possible. Not sure how they accomplish it - gearing? It's definitely mechanical. Quote Link to comment Share on other sites More sharing options...
2011edgese Posted April 30, 2015 Author Report Share Posted April 30, 2015 The battery voltage on my '07 (not on a "smart" system like the 2011+) is reading about 13.9 - 14.4 when the Edge is running, rarely if ever above or below. The battery IS new, put it in a couple of months ago. that's interesting. I used to have a 08 vue, that charged at 3.7 average and fluctuated between 12.5 to 15.5. I thought it was a bad xharging system. Dealer said its normal for this smart charging system. I guess every car manufacturer has its own thing. Quote Link to comment Share on other sites More sharing options...
ronaldo1981 Posted July 13, 2015 Report Share Posted July 13, 2015 Using ford IDS application and VCMII or VCM, a battery monitoring system reset is necessary. "BMS reset procedure" Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted July 13, 2015 Report Share Posted July 13, 2015 Ronaldo! How is your Edge restoration project going? Did you get the axle issue resolved? Quote Link to comment Share on other sites More sharing options...
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