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GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford SVT Raptor General Discussions [GEN 1]
Battery Light Intermittent On/Off
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<blockquote data-quote="FordTechOne" data-source="post: 1649681" data-attributes="member: 35543"><p>There is a BMS reset procedure available in IDS. Alternatively, allowing the vehicle to sit for 8 hours in disturbed (no doors open or key fob commands) will allow the system to re-learn the battery state of charge on its own. The BMS has nothing to with charging; it’s purpose is to monitor battery state of charge to prevent a discharged battery with the engine off. If the BMS detects slow state of charge, the load shedding strategy will activate and you may see a “system off to save battery” message.</p><p></p><p>The reason there are issues with aftermarket alternators is due to the voltage regulator. The PCM communicates with the regulator over the GENMON and GENCOM circuits. The aftermarket regulators are often not built with the same tolerances as the Ford regulators, which causes the PCM to set a DTC.</p></blockquote><p></p>
[QUOTE="FordTechOne, post: 1649681, member: 35543"] There is a BMS reset procedure available in IDS. Alternatively, allowing the vehicle to sit for 8 hours in disturbed (no doors open or key fob commands) will allow the system to re-learn the battery state of charge on its own. The BMS has nothing to with charging; it’s purpose is to monitor battery state of charge to prevent a discharged battery with the engine off. If the BMS detects slow state of charge, the load shedding strategy will activate and you may see a “system off to save battery” message. The reason there are issues with aftermarket alternators is due to the voltage regulator. The PCM communicates with the regulator over the GENMON and GENCOM circuits. The aftermarket regulators are often not built with the same tolerances as the Ford regulators, which causes the PCM to set a DTC. [/QUOTE]
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GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford SVT Raptor General Discussions [GEN 1]
Battery Light Intermittent On/Off
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