Good evening all
I thought I'd contribute to this thread as I too experienced electrical issues which appeared to be due to the battery. I did charge it but replaced it as a precaution but had lost the infotainment, no stereo, nav screen. The only thing that works is the CD eject button.
I've replaced the battery and checked all the fuses, the likely candidates in the passenger footwell and under the bonnet. Used the Carista OBDC connector and there are no faults. I'm wondering whether the infotainment is faulty after the electrics going haywire.
Any ideas if there is a procedure for resetting the system? I've tried the disconnect battery, keep the stereo button pressed for 5 seconds with ignition on (foot off break).
Thanks
Pete