Hi I've been advised to get over my immobilised/dead rrs to change ecu, clocks, central fuse box, transponder ring and key in order to enable me to use the vehicle again now can anyone advise me if this will be true or will I be face with incompatibility issues with every other part of this car ? Now to recap this vehicle was locked/alarm on, the battery died I managed to open bonnet to replace battery however car stayed immobilised/alarm will not switch off therefore we cannot start car as alarm thinks we are stealing it on top of this the original keys are not recognised. Please help... one very frustrated RRS owner