Vehicle charging
08-15-2017, 06:11 PM
#11
You might not have start/stop, but you would still have battery state-of-charge management (as all F150s have had since 2009). And, if you have a charging system issue, you would likely still be seeing the same issue.
Have you considered that, perhaps, your dealer is incompetent? If the error message is coming up, there's a reason for that (fairly simple algorithm)... they should be able to plug into it with IDS and determine exactly why it's occurring. Could be a battery, alternator, loose cable, sensor, who knows.
Have you considered that, perhaps, your dealer is incompetent? If the error message is coming up, there's a reason for that (fairly simple algorithm)... they should be able to plug into it with IDS and determine exactly why it's occurring. Could be a battery, alternator, loose cable, sensor, who knows.
08-15-2017, 06:14 PM
#12
You might not have start/stop, but you would still have battery state-of-charge management (as all F150s have had since 2009). And, if you have a charging system issue, you would likely still be seeing the same issue.
Have you considered that, perhaps, your dealer is incompetent? If the error message is coming up, there's a reason for that (fairly simple algorithm)... they should be able to plug into it with IDS and determine exactly why it's occurring. Could be a battery, alternator, loose cable, sensor, who knows.
Have you considered that, perhaps, your dealer is incompetent? If the error message is coming up, there's a reason for that (fairly simple algorithm)... they should be able to plug into it with IDS and determine exactly why it's occurring. Could be a battery, alternator, loose cable, sensor, who knows.
08-15-2017, 06:52 PM
#13
Vehicle charging message is only providing information regarding your Stop/Start functionality. There is nothing wrong with the system. No DTC's will be set as it is normally working. The S/S system is designed to operate for the majority of the owners under most circumstances, we cannot expect to operate under all conditions for everybody. It is simply letting you know that the Battery Management System believes your battery is not healthy enough to allow the truck to turn off (at a stop light/sign or whatever) and still support all of the electrical equipment to run. It is there actually to protect from your truck tanking on voltage and causing an issue. There can be a couple reasons and it mainly relates to your battery health. You could have a low key off load draining your battery to a state below the minimum state of charge to support Start/Stop. Your drive cycle could be poor enough to not keep your battery charge, this is more common for folks who mainly do city driving or very short drives continuously.
Resetting the BMS will not 100% correct the problem because it will relearn the battery health during the next 8 hour rest period. Resetting the BMS system will make it believe a new battery has been isntalled. If a unhealthy battery is still installed, the operating characteristics will not match that of a new battery and likely prevent S/S from operating again in near future. If the battery is actually heathy, it will help the system quickly recover and reset to a higher SOC, which will hopefully continue to operate normally.
I can offer a quick suggestion. Re-charge your battery with an external charger overnight. You have an AGM battery so I would recommend a charger that can support that type of battery. Do not hook up directly to the negative battery post so the BMS sensor can measure charge going back into the battery. After charging, dis-connect the battery. This does a soft reset of the BMS (does not reset to a new battery) to a higher SOC value. The S/S will likely still not work until a quiet 8 hour off period is observed. If this does not work, either your battery is becoming defective or have a KOL issue as previously noted. If the KOL is too high, it does not allow the BMS system to check your battery during the 8 hour off period.
Resetting the BMS will not 100% correct the problem because it will relearn the battery health during the next 8 hour rest period. Resetting the BMS system will make it believe a new battery has been isntalled. If a unhealthy battery is still installed, the operating characteristics will not match that of a new battery and likely prevent S/S from operating again in near future. If the battery is actually heathy, it will help the system quickly recover and reset to a higher SOC, which will hopefully continue to operate normally.
I can offer a quick suggestion. Re-charge your battery with an external charger overnight. You have an AGM battery so I would recommend a charger that can support that type of battery. Do not hook up directly to the negative battery post so the BMS sensor can measure charge going back into the battery. After charging, dis-connect the battery. This does a soft reset of the BMS (does not reset to a new battery) to a higher SOC value. The S/S will likely still not work until a quiet 8 hour off period is observed. If this does not work, either your battery is becoming defective or have a KOL issue as previously noted. If the KOL is too high, it does not allow the BMS system to check your battery during the 8 hour off period.
08-15-2017, 06:57 PM
#14
Vehicle charging message is only providing information regarding your Stop/Start functionality. There is nothing wrong with the system. No DTC's will be set as it is normally working. The S/S system is designed to operate for the majority of the owners under most circumstances, we cannot expect to operate under all conditions for everybody. It is simply letting you know that the Battery Management System believes your battery is not healthy enough to allow the truck to turn off (at a stop light/sign or whatever) and still support all of the electrical equipment to run. It is there actually to protect from your truck tanking on voltage and causing an issue. There can be a couple reasons and it mainly relates to your battery health. You could have a low key off load draining your battery to a state below the minimum state of charge to support Start/Stop. Your drive cycle could be poor enough to not keep your battery charge, this is more common for folks who mainly do city driving or very short drives continuously.
Resetting the BMS will not 100% correct the problem because it will relearn the battery health during the next 8 hour rest period. Resetting the BMS system will make it believe a new battery has been isntalled. If a unhealthy battery is still installed, the operating characteristics will not match that of a new battery and likely prevent S/S from operating again in near future. If the battery is actually heathy, it will help the system quickly recover and reset to a higher SOC, which will hopefully continue to operate normally.
I can offer a quick suggestion. Re-charge your battery with an external charger overnight. You have an AGM battery so I would recommend a charger that can support that type of battery. Do not hook up directly to the negative battery post so the BMS sensor can measure charge going back into the battery. After charging, dis-connect the battery. This does a soft reset of the BMS (does not reset to a new battery) to a higher SOC value. The S/S will likely still not work until a quiet 8 hour off period is observed. If this does not work, either your battery is becoming defective or have a KOL issue as previously noted. If the KOL is too high, it does not allow the BMS system to check your battery during the 8 hour off period.
Resetting the BMS will not 100% correct the problem because it will relearn the battery health during the next 8 hour rest period. Resetting the BMS system will make it believe a new battery has been isntalled. If a unhealthy battery is still installed, the operating characteristics will not match that of a new battery and likely prevent S/S from operating again in near future. If the battery is actually heathy, it will help the system quickly recover and reset to a higher SOC, which will hopefully continue to operate normally.
I can offer a quick suggestion. Re-charge your battery with an external charger overnight. You have an AGM battery so I would recommend a charger that can support that type of battery. Do not hook up directly to the negative battery post so the BMS sensor can measure charge going back into the battery. After charging, dis-connect the battery. This does a soft reset of the BMS (does not reset to a new battery) to a higher SOC value. The S/S will likely still not work until a quiet 8 hour off period is observed. If this does not work, either your battery is becoming defective or have a KOL issue as previously noted. If the KOL is too high, it does not allow the BMS system to check your battery during the 8 hour off period.
11-19-2017, 11:57 AM
#15
Sorry to fire up an old thread but I found something very odd...so it seems the hid kit was causing my auto start stop to not work, it was run by a proper relay kit installed and fused to the battery. This weekend I installed heated seats. Wired from the battery, to a relay that is triggered by accessory fuse #37. Now my auto start stop is not working again...it seems this truck does not like anything attached to the battery...oh well, I like my heated seats better than my auto stop.
11-19-2017, 12:09 PM
#16
Sorry to fire up an old thread but I found something very odd...so it seems the hid kit was causing my auto start stop to not work, it was run by a proper relay kit installed and fused to the battery. This weekend I installed heated seats. Wired from the battery, to a relay that is triggered by accessory fuse #37. Now my auto start stop is not working again...it seems this truck does not like anything attached to the battery...oh well, I like my heated seats better than my auto stop.
Last edited by tmcolegr; 11-19-2017 at 12:17 PM.
11-19-2017, 12:23 PM
#17