A control system for controlling the functionality of an electrically powered vehicle is described. The control system comprises a plurality of control modules in electronic communication with each of the control modules being programmed to implement a specific control function for the vehicle. The control modules comprise a first memory for storing data for implementing the control function, and the system further comprises at least one second memory for storing data for implementing each control function of the separate modules, wherein the data can be recorded to the second memory from the control modules.