ameliefeuer1

Seat Mii Electric Brake Light Issue

Alright, so I've got a weird problem with my 2020 Seat Mii electric. I keep getting an error message on the infotainment display and the brake lights sometimes don't work. The error memory has something stored about the brake light switch. Any ideas? I think it might be a bad brake light switch, but I'm not sure how to confirm this. It's a real pain because it's a vehicle safety issue and I don't want to get rear-ended.

4 comment(s)

Intermittent brake light issues on a 2020 Mii EV? Hmmm. First thing's first: did you scan the car for DTCs? Could be a faulty brake light switch, but I'd want to rule out any CAN bus gremlins first. Also, confirm all your tail light bulbs are functioning correctly. A bad bulb can sometimes throw a spurious code.

DTCs? CAN bus? What does all that mean? How do I check those? The tail lights all seem to be working fine.

DTCs are Diagnostic Trouble Codes, and the CAN bus is the Controller Area Network – basically how all the car's computers talk to each other. If you are not familiar with OBD diagnostics, then you should probably get it checked at a certified workshop, but from what you are saying this is probably a user error.

Thanks for the help. Turns out I was resting my foot on the brake pedal a little bit. That was enough to trigger the error. I adjusted my seating position and the problem went away. No repair needed, 0€!

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