My 2011 Auris with 79k miles broke down last week. The AA were very prompt to arrive and diagnosed a failed Inverter/Converter & towed the car to the nearest Toyota dealer.
Fortunately I have an extended warranty so it was repaired at no cost to myself. The labour time was just over 2 hours. I believe I could have faced a bill approaching £2k.
I'm reporting this in case anyone else suffers the same fate to their Mk 1 Auris as the interesting thing is that the dealer put in new unit which is listed as belonging to a Mk2 Auris.
You can pick these up used on ebay for circa £250. The part number on the new Inverter/Converter is G9200-47190 or 22JTE47190A19F030065. The 2 digits after the A in the latter number I believe indicates the year of manufacture (so 2019 in my case).