I had this problem on the Instrument Cluster. The screen was all black with this message "Simple mode activated", and the SPEED and DRIVE on the black screen.
The problem is that i did not find the way to restore the 'normal' screen...
After multiple ON/OFF of the J7 HEV, the 'normal' screen reappeared.
Has anyone experimented this ?
Is there a better method to restore the original screen ?
Thanks
Vincent