Hi to everyone please bear with me as this is my first post
The problem I have is after over heating due to split expansion tank I took to the garage they replace the tank refiled the coolant system the car was running fine but in his words 'after 10mins of running the car cut out and will not start even turnover and is now showing the following

HDC inactive
engine fail safe mode
air suspension inactive
also the temp gauge is off the scale well past the red mark even when engine hasn't run for two days
I am on a Greek Island so no RR service on the Island my question is. Is it possible to re-set the ECU without the software from RR and if so How?or any ideas of what the problem might be
Many Thanks
Dave