What happens if the high-voltage battery pack warning lamp flashes while I am driving?

If the power battery warning lamp flashes, it indicates the high voltage battery temperature is too high. You should stop the car as soon as safety permits, power off the vehicle, leave the vehicle immediately, and contact an MG Authorised Repairer at the earliest opportunity. If the lamp illuminates solidly rather than flashing, it indicates a serious malfunction of the battery system and the same urgent actions apply. (Page 46)