Radio didn't play when vehicle turned off "battery saver"
10-15-2014, 01:23 PM
#991
Member
My Truck is currently a the dealer for this problem, ill ask them when its done what all they did. Hopefully they do something other than replace the battery...
10-15-2014, 02:00 PM
#992
Unless they are current on what this problem is and they have been dealing with it with other customers, then you will probably start repeating what others have done. Your service department is probably going to get to know you on a first name basis. Lol.
10-15-2014, 08:13 PM
#993
Member
BCM Reprogram
Do you know if this reprogram is for 2013-2014 trucks only? I ask because I just returned from my friendly neighbourhood FORD dealership and they checked my 2012 VIN in OASIS and no sign of any BCM updates. They then checked OASIS for any updates for all 2012 F150's but still no luck. They didn't check 2013-2014 as they said FORD wouldn't let them load it into my 2012 because of possible software conflicts.
10-15-2014, 10:38 PM
#994
Junior Member
Do you know if this reprogram is for 2013-2014 trucks only? I ask because I just returned from my friendly neighbourhood FORD dealership and they checked my 2012 VIN in OASIS and no sign of any BCM updates. They then checked OASIS for any updates for all 2012 F150's but still no luck. They didn't check 2013-2014 as they said FORD wouldn't let them load it into my 2012 because of possible software conflicts.
10-16-2014, 08:12 AM
#995
You are right about the problems. There are two things going on with these trucks.
The first is that the BMS is too sensitive and over reacting to real world conditions. So it is reporting a problem when there isn't one.
The 2nd thing going on with many, including mine, is the parasitic current draw. It should be noted the people who have the BMS issue don't all have the parasitic draw issue. However those people who are getting the dead batteries will also see the BMS reporting excess current being drawn from the battery.
So hopefully this fix that is supposed to be coming out soon will address both problems.
People who have been following this will notice some threads reporting instrument lighting and TPMS activating when their truck has been parked with the key out and nothing plugged in. Those are both symptoms of the parasitic current draw that is killing batteries.
What Ford needs to figure out is when someone parks their truck and removes the key from the ignition, why the electronic systems are starting up by themselves.
Bottom line....... Software bug.
The first is that the BMS is too sensitive and over reacting to real world conditions. So it is reporting a problem when there isn't one.
The 2nd thing going on with many, including mine, is the parasitic current draw. It should be noted the people who have the BMS issue don't all have the parasitic draw issue. However those people who are getting the dead batteries will also see the BMS reporting excess current being drawn from the battery.
So hopefully this fix that is supposed to be coming out soon will address both problems.
People who have been following this will notice some threads reporting instrument lighting and TPMS activating when their truck has been parked with the key out and nothing plugged in. Those are both symptoms of the parasitic current draw that is killing batteries.
What Ford needs to figure out is when someone parks their truck and removes the key from the ignition, why the electronic systems are starting up by themselves.
Bottom line....... Software bug.
If this is the case then its one of if not the cause for batteries going bad. Lead Acid batteries don't like being in a constant undercharged state. I suspect that those of us that are just putting up with the message rather than topping off the battery when it comes on are essentially allowing the battery to die.
10-16-2014, 08:45 AM
#996
Correct me if I'm wrong but I seem to remember someone saying that when the battery drains to a certain level then the system won't allow the battery to charge beyond that point of some level less than full charge. If this is the case then its one of if not the cause for batteries going bad. Lead Acid batteries don't like being in a constant undercharged state. I suspect that those of us that are just putting up with the message rather than topping off the battery when it comes on are essentially allowing the battery to die.
10-16-2014, 10:05 AM
#997
Correct me if I'm wrong but I seem to remember someone saying that when the battery drains to a certain level then the system won't allow the battery to charge beyond that point of some level less than full charge.
If this is the case then its one of if not the cause for batteries going bad. Lead Acid batteries don't like being in a constant undercharged state. I suspect that those of us that are just putting up with the message rather than topping off the battery when it comes on are essentially allowing the battery to die.
If this is the case then its one of if not the cause for batteries going bad. Lead Acid batteries don't like being in a constant undercharged state. I suspect that those of us that are just putting up with the message rather than topping off the battery when it comes on are essentially allowing the battery to die.
It stops the unwanted messages by providing a false current load data to the BMS system. I wonder if by removing the sensor off of the battery wire it would also allow the battery to fully charge.
10-16-2014, 11:21 AM
#998
Junior Member
Yes 3kusn, I would agree that some of these battery replacements are likely due to the system not keeping the batteries fully charged, causing the batteries to fail. I also think many of the battery replacements for the cases when the battery is found to be completely drained in the morning is a result of the vehicle draining the battery down to a deep discharge state (thereby damaging the battery) and not due to a bad battery from the start. Lead Acid batteries also do not respond well to excessive/deep discharging (especially batteries not designed for deep cycling).
10-16-2014, 11:33 AM
#999
Yes 3kusn, I would agree that some of these battery replacements are likely due to the system not keeping the batteries fully charged, causing the batteries to fail. I also think many of the battery replacements for the cases when the battery is found to be completely drained in the morning is a result of the vehicle draining the battery down to a deep discharge state (thereby damaging the battery) and not due to a bad battery from the start. Lead Acid batteries also do not respond well to excessive/deep discharging (especially batteries not designed for deep cycling).
10-16-2014, 11:53 AM
#1000
Senior Member
You are right about the problems. There are two things going on with these trucks.
The first is that the BMS is too sensitive and over reacting to real world conditions. So it is reporting a problem when there isn't one.
The 2nd thing going on with many, including mine, is the parasitic current draw. It should be noted the people who have the BMS issue don't all have the parasitic draw issue. However those people who are getting the dead batteries will also see the BMS reporting excess current being drawn from the battery.
So hopefully this fix that is supposed to be coming out soon will address both problems.
People who have been following this will notice some threads reporting instrument lighting and TPMS activating when their truck has been parked with the key out and nothing plugged in. Those are both symptoms of the parasitic current draw that is killing batteries.
What Ford needs to figure out is when someone parks their truck and removes the key from the ignition, why the electronic systems are starting up by themselves.
Bottom line....... Software bug.
The first is that the BMS is too sensitive and over reacting to real world conditions. So it is reporting a problem when there isn't one.
The 2nd thing going on with many, including mine, is the parasitic current draw. It should be noted the people who have the BMS issue don't all have the parasitic draw issue. However those people who are getting the dead batteries will also see the BMS reporting excess current being drawn from the battery.
So hopefully this fix that is supposed to be coming out soon will address both problems.
People who have been following this will notice some threads reporting instrument lighting and TPMS activating when their truck has been parked with the key out and nothing plugged in. Those are both symptoms of the parasitic current draw that is killing batteries.
What Ford needs to figure out is when someone parks their truck and removes the key from the ignition, why the electronic systems are starting up by themselves.
Bottom line....... Software bug.