This error pairing has just appeared on my 2006 400h.
My current code reader isn't giving me any joy on the codes, but will briefly clear the issue. (For about 5secs)
Battery voltage is 13ish when running, mid 11 when off.
I've seen techstream mentioned, can anyone recommend one I can buy?
Any hints or suggestions on where to start with tests/fixes?
Thanks! 🙂