My M3 (rear wheel long range) will be two years old next month (August). When I charge it, exclusively starting at midnight due to rates, and using a Tesla wall connector, I receive a text when charging starts and when it ends along with the mile range when it starts and finishes. The first year or so, I regularly looked at those texts and calculated, based on time and miles of range added, what my range per hour being added was. It has consistently been 44-45 miles of range added per hour. No exceptions.
Haven't been as diligent looking at these texts recently, but last week, I happened to notice one pair of texts that implied it took way longer than normal to charge (picture attached). Doing the math, it was 27 miles of range added per hour. So I watched it closely the next time I charged. Again, it was very low.
So yesterday I plugged it in during the day for about five minutes and observed the display. 44 miles @ 48 amps which is what it should be. Charged it last night starting at midnight. I woke up at 12:20 AM and checked the app. 44 Miles at 48 amps. All is good. Woke up again at 2:18 AM and checked the app again. 22 miles at 24 amps. It cut the amps in half and thus the miles. Went to the car to look at the screen (picture attached) and it showed 24 amps, but the plus sign to increase the amps was greyed out (see red box on picture). This implied to me that it wasn't able to go beyond 24 amps at that time.
To further test, I stopped charging, unplugged the cable, waited about 10 seconds, plugged the cable back in and started charging again. It ramped right back up to 44 miles and 48 amps (see picture). Went back to bed and 20 minutes later I checked the app (picture attached) and it was at 45 miles and 48 amps. All good. But this morning, when I looked at the start and stop texts for this last charging session (picture attached), it works out to 38 miles of range per hour. My guess is it stepped down to 24 amps again sometime during the charging session.
Any clue why this is happening? I don't know if it's the car, Tesla wall connector or electrical feed. Although I don't think this is it, it's worth noting that I got solar for the house back in April. I can't imagine that would have an impact but just throwing it out there anyway. The lights on the Tesla wall connector still do the same thing they always have - green blinking in a downward direction.
Thanks in advance for any advise.
Haven't been as diligent looking at these texts recently, but last week, I happened to notice one pair of texts that implied it took way longer than normal to charge (picture attached). Doing the math, it was 27 miles of range added per hour. So I watched it closely the next time I charged. Again, it was very low.
So yesterday I plugged it in during the day for about five minutes and observed the display. 44 miles @ 48 amps which is what it should be. Charged it last night starting at midnight. I woke up at 12:20 AM and checked the app. 44 Miles at 48 amps. All is good. Woke up again at 2:18 AM and checked the app again. 22 miles at 24 amps. It cut the amps in half and thus the miles. Went to the car to look at the screen (picture attached) and it showed 24 amps, but the plus sign to increase the amps was greyed out (see red box on picture). This implied to me that it wasn't able to go beyond 24 amps at that time.
To further test, I stopped charging, unplugged the cable, waited about 10 seconds, plugged the cable back in and started charging again. It ramped right back up to 44 miles and 48 amps (see picture). Went back to bed and 20 minutes later I checked the app (picture attached) and it was at 45 miles and 48 amps. All good. But this morning, when I looked at the start and stop texts for this last charging session (picture attached), it works out to 38 miles of range per hour. My guess is it stepped down to 24 amps again sometime during the charging session.
Any clue why this is happening? I don't know if it's the car, Tesla wall connector or electrical feed. Although I don't think this is it, it's worth noting that I got solar for the house back in April. I can't imagine that would have an impact but just throwing it out there anyway. The lights on the Tesla wall connector still do the same thing they always have - green blinking in a downward direction.
Thanks in advance for any advise.