Electric traction system fault


Today I had warning on my dashboard “Electric traction system fault:repair the vehicle”
It is the second time.First was a couple of weeks ago.
Been advised by RAC mechanic that I need software update.
After turning vehicle off and on again the message dissapeared and the car drives normaly.
Any thoughts?


check on diagbox what errors pops out, some other forums it might be a back up battery problems