12V battery voltage drops, is it normal???
#46
I have my buddy's house and car keys while he's away for a few months. His 2023 Mercedes GLC 300 sent a notification to his phone that his 12V battery was low. I went over and drove it around to charge it up. So Lexus drivers rejoice that others have this problem too.
I have yet to get the notification on my NX450h+ but it usually gets driven often enough that it's not a problem. At least I don't think it's a problem because I don't monitor by 12V battery.
Question for the people in this thread, with the ability and care to monitor their 12V battery, does using the remote start feature charge the battery? I believe it must because the remote start can turn on the HVAC for heating/cooling and that requires the high voltage battery. There shouldn't be any reason for the DC/DC converter not to also turn on in this case.
I have yet to get the notification on my NX450h+ but it usually gets driven often enough that it's not a problem. At least I don't think it's a problem because I don't monitor by 12V battery.
Question for the people in this thread, with the ability and care to monitor their 12V battery, does using the remote start feature charge the battery? I believe it must because the remote start can turn on the HVAC for heating/cooling and that requires the high voltage battery. There shouldn't be any reason for the DC/DC converter not to also turn on in this case.
#47
I have my buddy's house and car keys while he's away for a few months. His 2023 Mercedes GLC 300 sent a notification to his phone that his 12V battery was low. I went over and drove it around to charge it up. So Lexus drivers rejoice that others have this problem too.
I have yet to get the notification on my NX450h+ but it usually gets driven often enough that it's not a problem. At least I don't think it's a problem because I don't monitor by 12V battery.
Question for the people in this thread, with the ability and care to monitor their 12V battery, does using the remote start feature charge the battery? I believe it must because the remote start can turn on the HVAC for heating/cooling and that requires the high voltage battery. There shouldn't be any reason for the DC/DC converter not to also turn on in this case.
I have yet to get the notification on my NX450h+ but it usually gets driven often enough that it's not a problem. At least I don't think it's a problem because I don't monitor by 12V battery.
Question for the people in this thread, with the ability and care to monitor their 12V battery, does using the remote start feature charge the battery? I believe it must because the remote start can turn on the HVAC for heating/cooling and that requires the high voltage battery. There shouldn't be any reason for the DC/DC converter not to also turn on in this case.
There is a video on post #12 that can give you some insights on the charging pattern.
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