How can I fix OBDII and BMS Issues on my 2015 Smart ED?

Sussystorm · Nov 15, 2024

I bought a bricked 2015 Smart ED and got all the cells charged, but my OBDII reader won’t read the engine codes. It recognizes the car, but keeps giving a DTC read error. My other car works fine with the same reader, and I also tried a Scanguage that won’t connect at all. I suspect the BMS needs reprogramming and am looking for recommendations for help, particularly in the US. I have an Arduino with CAN-Bus that reads battery data but shows “MALFUNCTION” when charging, likely due to a fault. Any suggestions for diagnosing the BMS or DTCs?

Wragby · Nov 18, 2024

Have you tried specialized Smart ED tools or consulted a service that can reprogram the BMS? It is looking like a BMS fault might be blocking DTC read

Sussystorm · Nov 18, 2024

That is a smart idea. I haven’t tried specialized Smart ED tools yet, but I’m considering it. I’ll also look into services that can reprogram the BMS to see if that resolves the issue.

Wragby · Dec 11, 2024

Great! Hopefully, the tools or reprogramming will resolve the issue.

4enz.dzn · Jan 1, 2025

Sussystorm said:
That is a smart idea. I haven’t tried specialized Smart ED tools yet, but I’m considering it. I’ll also look into services that can reprogram the BMS to see if that resolves the issue.

Did you solve it?