I've trawled through the previous posts but haven't found anyone who has had this problem yet.
I've got a 147 1.6L TS Lusso with the Connect+ Sat Nav / Audio / Phone system. When I turn it on with the engine switched off, everything works fine.
If I then start the engine, the screen goes black and asks me for a Master Code.
Now I've got the Master code in the handbook, but when I enter it, the system rejects it and says "Incorrect code entered".
Here's the infuriating bit: If I take out the phone card (!), switch the system off with the engine running, then switch it back on (holding down the on button for about 5 seconds), then about 50% of the time the whole system will come back on and work fine. I've got to do each one of these steps else it definitely won't work.
Obviously, I've got the right code, else it wouldn't work at all, so why is this happening?
Anyone had anything similar?