So I'm an idiot. I used our 2015 i3 REX with 14k miles to power an air compressor to blow up some pool floats over the weekend. I did not start the car completely, I left it in accessory mode (or whatever). I noticed the "Excessive Battery Discharging While Parked" error close to the end of using the compressor so I did start the car all the way. I then locked the car and went about my business. Monday morning on the way to work I noticed the auto open lock didn't work when I grabbed the handle, the unlock button on the key worked fine. I of course then got the same error when starting the car. I googled the issue and couldn't find much about recharging the battery, lots about replacing it. Oh and I HAD NO IDEA the i3 had a 12volt battery!!! Seems odd to me hat an electric car would need one. I did find a BMW service bulletin that appeared to say the fast charger would recharge the 12volt. So I've been plugging the car in every night when I get home (use about 12-15 miles electric range daily) and am still getting the error. No issues yet with starting or driving the car but I'm concerned about long term problems.
Questions:
Does the 12v battery need replacement? Or Will it eventually recharge?
Is there a way to tell if the 12v is being charged by the main battery (which i understand is the process)?
Is there a way to see the charge level of the 12v?
I used Bimmercode to enable the full gas tank and a few minor tweaks (decrease lock beep volume etc.) a few months ago, so not sure if that's a problem?
Any advice would be much appreciated!
Questions:
Does the 12v battery need replacement? Or Will it eventually recharge?
Is there a way to tell if the 12v is being charged by the main battery (which i understand is the process)?
Is there a way to see the charge level of the 12v?
I used Bimmercode to enable the full gas tank and a few minor tweaks (decrease lock beep volume etc.) a few months ago, so not sure if that's a problem?
Any advice would be much appreciated!