Hi, I have a M3 E46 2005 with two keys. I had just installed inpa the other day on my laptop and plugged in for some diagnostics, at this point both keys would start the car.
Now something has happened during the last few days that has caused one of the keys, (the one I had in the ignition while using the software) to stop the car from starting. The second key still works..
Inpa tells me a stored error code 66 ews-interface error
Under the ews section it tells me that key no 1 is not valid because of incorrect changing code
Very similar to the problem this guy is having E39 Key Activate using SSS progman / INPA or EWS Adjust HELP!
When I try to to do an ews resync in inpa it gives me a script error
Also might have something to do with it, I think the battery got very low the other day while I was plugged in, another forum said that the changing code can unsync if the key is left in and the battery goes flat.
No idea what to do next..