ehcorn
Posts: 3
Joined: Sun Jun 14, 2020 10:02 pm

Troubleshooting "drivetrain issue" error

Sun Jun 14, 2020 10:07 pm

I've got some error codes that keep coming up. I had a "Drivetrain error, okay to keep driving, but book a service appointment" so I fired up bimercode, pulled all my error files, cleared my codes, and these keep coming up (after I replaced the aged 12v battery using the new battery registration procesdure)

Battery Management Electronics
2 errors
21F0E3: INSULATION MONITORING - INSULATION FAULT IN THE ENTIRE SYSTEM
(CLOSED CONTACTORS)
21F0E4: INSULATION MONITORING - INSULATION WARNING IN THE ENTIRE SYSTEM
(CLOSED CONTACTORS)
Electrical Machine Electronics
2 errors
22280F: HV POWER MANAGEMENT: HV BATTERY, INSULATION FAULT
222814: HV POWER MANAGEMENT: HV BATTERY, INSULATION WARNING

Is this a serious problem? I found some previous posts giving more information on it but not really any more than that, how to fix it, or if I should be worried about this. Previous posts seem to indicate either damaged cables, or moisture, eh?

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MKH
Gold Member
Posts: 582
Joined: Fri Nov 02, 2018 5:48 am
Location: Dallas

Re: Troubleshooting "drivetrain issue" error

Mon Jun 15, 2020 8:22 am

Been in really wet areas? I seem to remember a posters that had similar errors after heavy rains, driving through standing water, that went away when the car 'dried-out'. They had a REx, and running the REx engine for 20-30 minutes seemed to help the drying out process.

Failing that, have read that persistent moisture in the cable connections that won't go away requires changing out the HV cables.
Mark H.
2015 i3 Rex, Capparis White, Tera World, Technology & Driving Assistant, Parking Assistant, Harman Kardon Audio System, 19 inch 427 wheels, EVoInnovate EVSE

ehcorn
Posts: 3
Joined: Sun Jun 14, 2020 10:02 pm

Re: Troubleshooting "drivetrain issue" error

Mon Jun 15, 2020 9:34 am

I bought it from a guy who lives in one of the wettest cities in Canada, and we're having an abnormally wet spring, we also park on my lawn since my charge cable doesn't reach far enough, so yes to all I guess. Is it safe to wait and see if it'll dry out? Once our rainy season ends in a few weeks we hardly get any rain and can see temps north of 40 degrees C so drying the car out shouldn't be an issue, but it could be a month or two before that happens.

jadnashuanh
Posts: 4946
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: Troubleshooting "drivetrain issue" error

Mon Jun 15, 2020 12:53 pm

MOisture can promote corrosion. Don't know enough specifics on the i3's systems to say whether this is something that needs to be dealt with or it could wait. I know on servicing some other high voltage devices while I was in the military, they often used some special grease on connectors to help keep things dry. Today's better plastics probably can make suitable seals that may not require that sort of thing.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV

ehcorn
Posts: 3
Joined: Sun Jun 14, 2020 10:02 pm

Re: Troubleshooting "drivetrain issue" error

Mon Jun 15, 2020 3:38 pm

Is there somewhere that would show me where these connectors are so I can try drying them out?

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MKH
Gold Member
Posts: 582
Joined: Fri Nov 02, 2018 5:48 am
Location: Dallas

Re: Troubleshooting "drivetrain issue" error

Tue Jun 16, 2020 6:19 am

I'd be careful trying to manually dry out the cables. The HV battery is 360 volts. Touch the wrong thing, and bye-bye. . The cables are colored 'high-voltage orange' for a reason. There is an HV disconnect switch in the right frunk area.
Wire harnes.jpg
Wire harnes.jpg (60.06 KiB) Viewed 316 times
disconnect3 j.jpg
disconnect3 j.jpg (270.49 KiB) Viewed 311 times
Mark H.
2015 i3 Rex, Capparis White, Tera World, Technology & Driving Assistant, Parking Assistant, Harman Kardon Audio System, 19 inch 427 wheels, EVoInnovate EVSE

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